Supporting and bracing system and method for concrete column pouring

Abstract

The application discloses a supporting and bracing system and method for concrete column pouring, which comprises a column formwork, a plurality of unit plates which are sequentially spliced and arranged in a circumferential direction, a plurality of annular back braces which are arranged in a circumferential direction and radially support the column formwork, vertical back braces which are vertically connected to the annular back braces and are arranged in a circumferential direction, and diagonal braces which are connected between the vertical back braces and a supporting surface. The supporting and bracing system for concrete column pouring can be spliced according to the shape and size of the column to be poured, and the annular back braces, the vertical back braces and the diagonal braces can provide support for the column formwork from the radial direction, the axial direction and the circumferential direction, so that the structure of the column formwork formed by splicing is stable under the gravity and load.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a support system and method for concrete column casting. Background Technology

[0002] Construction formwork is a temporary support structure, manufactured according to design requirements, to shape concrete structures and components into specified positions and geometric dimensions, maintain their correct position, and bear the self-weight of the formwork and external loads acting on it. When pouring columns, different column formwork is required for columns of different shapes and sizes. Some column formwork cannot be adjusted according to design needs, has a limited application scenario, and the shape and size of the poured columns are restricted by the formwork. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this application discloses a support system for concrete column casting, which can use multiple unit plates to splice into column formwork according to the shape and size of the column to be cast.

[0004] A support system for cast concrete columns, comprising:

[0005] The column formwork is a vertical cylindrical shape with a casting space inside. The column formwork includes multiple unit plates that are spliced ​​together in sequence along the circumference. The unit plates include one or more groups along the height direction. Each group is arranged in a ring. The groups are stacked in sequence along the height direction. Adjacent unit plates in the same group are hinged to each other. The hinge axis is arranged along the height direction. The unit plates between adjacent groups are stacked and abut against each other by end plates set on their respective end faces.

[0006] An annular back rib surrounds the outer periphery of the column template and has radial spacing. For each group of unit plates, at least one annular back rib is configured, and the annular back rib is connected to each of the unit plates.

[0007] Vertical back ribs are upright and connected to each annular back rib. Multiple vertical back ribs are arranged at intervals along the circumference.

[0008] The diagonal brace connects the vertical back rib and the support surface.

[0009] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0010] Optionally, the support system for concrete column casting also includes: a positioning component, disposed at the bottom of the casting space, for positioning the column formwork;

[0011] The positioning component includes at least a plurality of positioning rods with adjustable relative positions. The end of each positioning rod positions the boundary position of the casting space and cooperates with the inner side of the unit plate corresponding to the position to indicate the positioning.

[0012] Optionally, each group of unit boards has the following two states:

[0013] In the pre-assembled state, the unit panels in the same group are hinged in sequence, and the first and last unit panels are in a separate state. All unit panels are curtain-like structures and can be flattened and stacked between multiple groups.

[0014] In the working state, the unit plates of the same group are sequentially hinged to form a cylindrical shape and arranged around the casting space.

[0015] Optionally, the annular back rib includes multiple unit segments spliced ​​sequentially along the circumferential direction. Each unit segment includes multiple reinforcing bars extending side by side along the circumferential direction. The circumferential ends of the multiple reinforcing bars are provided with reinforcing plates connected to each other. The reinforcing plates between adjacent unit segments are abutted and connected to each other.

[0016] Optionally, each unit segment includes four reinforcing bars, which are arranged at the four corners of the rectangular area on the cross-section of the unit segment; the reinforcing plate includes four pieces, which are located between two radially adjacent reinforcing bars and between two vertically adjacent reinforcing bars respectively; each reinforcing plate is provided with connecting holes for connecting to adjacent unit segments through connectors.

[0017] Optionally, the back side of the unit plate has end plates at both ends in the height direction and a rib plate in the middle, and the end plates and / or the rib plate are connected to the corresponding annular back ribs by radial struts.

[0018] The radial distance between the unit plate and the annular back rib is bidirectionally adjustable via the radial strut.

[0019] Optionally, the annular back rib is generally circular, and the cross-sectional shape of the casting space is similar to or different from the overall shape of the annular back rib.

[0020] Optionally, the annular back rib has a first slide rail, which extends circumferentially and is located at the middle of the height direction of the annular back rib.

[0021] The first slide rail passes through the inner and outer sides of the annular back rib in the radial direction. One end of the radial support rod is connected to the unit plate, and the other end extends through the first slide rail and is fixed to the outer side of the annular back rib.

[0022] Optionally, the annular back rib also has a second slide rail, which extends circumferentially and is located at the center of the annular back rib in the radial direction.

[0023] The second slide rail extends through the annular back rib along the height direction and is connected to the first slide rail. The annular back rib and the vertical back rib are connected to each other by a back rib connector that passes through the second slide rail.

[0024] This application also discloses a support method for cast concrete columns, including:

[0025] Pre-install column formwork outside the pouring construction area. Specifically, for the perimeter of the concrete column, a corresponding number of unit panels are grouped together and hinged in sequence, with the first and last unit panels in a separate state. The unit panels in the same group have a curtain-like structure and can be flattened and stacked between multiple groups.

[0026] In the pouring construction area, the curtain-like structure is rolled up so that the unit panels of the same group are sequentially hinged to form a cylinder, and the column formwork is built on the outer periphery of the pouring space.

[0027] Install the annular back rib, the vertical back rib, and the diagonal brace;

[0028] Each unit plate is connected to the annular back rib using radial struts. The unit plates are pulled outwards by the radial struts until the position of the column template and the shape of the surrounding area are consistent with the pouring space.

[0029] The support system for concrete column casting in this application consists of multiple unit plates spliced ​​together to form a column formwork. The splicing can be carried out according to the shape and size of the column to be cast. Annular back ribs, vertical back ribs and diagonal braces are set to provide support for the column formwork from the radial, axial and outer periphery, ensuring the structural stability of the spliced ​​column formwork under its own weight and load. Attached Figure Description

[0030] Figure 1 This is a structural schematic diagram of a support system for concrete column casting according to an embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the connection between the column template, the annular back rib, and the vertical back rib in one embodiment of this application;

[0032] Figure 3a This is a schematic diagram of the positioning component in one embodiment of this application;

[0033] Figure 3b This is a schematic diagram of the positioning component from another angle in one embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the positioning component from another angle in one embodiment of this application;

[0035] Figure 5a This is a schematic diagram of the degree structure of the positioning component in another embodiment of this application;

[0036] Figure 5b This is a schematic diagram of the positioning component from another angle in another embodiment of this application;

[0037] Figure 6 This is a schematic diagram of the back structure of a unit plate in one embodiment of this application;

[0038] Figure 7 This is a schematic diagram of the end plate structure in one embodiment of this application;

[0039] Figure 8 This is a perspective view of the annular back rib in one embodiment of this application;

[0040] Figure 9 This is a schematic diagram of the structure of a unit segment of an annular back rib in one embodiment of this application;

[0041] Figure 10 This is a schematic diagram of the radial strut structure in one embodiment of this application;

[0042] Figure 11 This is a schematic diagram of the structure of a radial strut connected to a unit plate (partially omitted) in one embodiment of this application;

[0043] Figure 12 This is a schematic cross-sectional view of the vertical back rib in one embodiment of this application;

[0044] Figure 13 This is a structural diagram illustrating the connection of the column template, the annular back rib, and the vertical back rib in another embodiment of this application.

[0045] Figure 14 This is a schematic diagram of the structure of the back rib connector in one embodiment of this application;

[0046] Figure 15 This is a schematic diagram of the structure of the back rib connector connecting the annular back rib in one embodiment of this application.

[0047] The annotations in the figure are explained as follows:

[0048] 10. Column formwork; 11. Casting space; 12. Unit panel; 13. U-shaped embedded reinforcement; 14. First nut; 14a. First nut; 14b. First nut; 15. Positioning rod; 15a. Positioning rod; 15b. Positioning rod; 16. Second nut; 16a. Second nut; 16b. Second nut; 17. Hinge shaft; 18. End plate; 19. Splicing hole;

[0049] 20. Annular back rib; 21. Unit segment; 22. Rib; 22a. Rib; 22b. Rib; 22c. Rib; 22d. Rib; 23. Reinforcing plate; 24. Connecting hole; 25. Connector; 26. Rib plate; 27. Radial strut; 28. Rib; 29. ​​Locking nut;

[0050] 30. Vertical back brace; 31. Adjustment hole; 32. Positioning seat; 33. Support surface; 34. Circular steel bar; 35. Through hole; 36. Pin; 37. Support column; 38. Short steel pipe; 39. First slide rail;

[0051] 40. Diagonal brace; 41. Second slide rail; 42. Back rib connector; 43. Side plate; 44. Connecting plate; 45. Through hole; 46a. Bolt; 46b. Bolt; 47. Fixing nut.

[0052] 50. Positioning components. Detailed Implementation

[0053] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0054] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0056] like Figure 1-2 As shown, a support system for concrete column casting includes a column formwork 10, annular back braces 20, vertical back braces 30, and diagonal braces 40. The column formwork 10 is generally a vertically placed cylindrical shape with a casting space 11 inside. The column formwork 10 includes multiple unit plates 12 that are sequentially spliced ​​along its circumference. The unit plates 12 can be flexibly spliced ​​to cast the concrete column of the required shape and size.

[0057] Multiple annular back ribs 20 are fitted around the outer periphery of the column formwork 10 and arranged circumferentially, each annular back rib 20 radially supporting the column formwork 10. The annular back ribs 20 provide radial support to the column formwork 10, and multiple sets can be installed according to the required column height. Vertical back ribs 30 are erected and connect to the annular back ribs 20, with multiple vertical back ribs 30 spaced circumferentially. The vertical back ribs 30 connect to the annular back ribs 20, providing axial support. Diagonal braces 40 connect the vertical back ribs 30 and the support surface 33, preventing the column formwork 10 from tilting due to its own weight and post-pouring load, ensuring the poured concrete column is perpendicular to the horizontal plane.

[0058] In some embodiments, as shown in Figures 3-4, to improve the installation accuracy of the column formwork 10 during the construction process, a positioning component 50 is provided. The positioning component 50 is located at the bottom of the pouring space 11 and is used to position the column formwork 10. For example, if the cross-section of the pouring space 11 is circular, the positioning component 50 positions the center of the circle and at least two points on the circumference, with the straight line connecting the two points passing through the center. When splicing the column formwork 10, the cross-section of the spliced ​​column formwork 10 is kept circular according to the diameter positioned by the positioning component 50.

[0059] The positioning component 50 includes a support and a rod. The support is fixed to the support surface, and the rod can move along its own length relative to the support.

[0060] The length direction of the rod is consistent with the diameter direction of the circle mentioned above. The support can be provided with a threaded hole, and the middle part of the rod is set in the threaded hole and threaded.

[0061] The support can be, for example, a U-shaped embedded bar 13, with a first nut 14 fixed on it to provide a threaded hole. The rod can be a positioning rod 15. The two ends of the U-shape of the embedded bar 13 are fixedly set in the ground. The first nut 14 is fixed on the inner side of the U-shaped bend. The positioning rod 15 is threadedly engaged with the first nut 14, and the two ends of the positioning rod 15 abut against the inner side of the corresponding column template 10 for positioning. The positioning assembly 50 also includes a second nut 16, which is threadedly installed on the positioning rod 15 and abuts against the first nut 14.

[0062] During construction, the positioning component 50 is placed first. The length of the positioning rod 15 can be adjusted by the first nut 14. Then, the first nut 14 is locked by the second nut 16 to prevent the positioning component 50 from moving during construction and causing the column formwork 10 to be inaccurately positioned.

[0063] In another embodiment, such as Figure 5aAs shown in Figure 5b, the positioning rod 15 can also be configured as two rods, such as positioning rod 15a and positioning rod 15b, which are arranged in a cross shape and staggered in the height direction. The U-shaped embedded rib 13 has a first nut 14a and a second nut 14b respectively connecting the positioning rods 15a and 15b, and a second nut 16a and a second nut 16b lock the positions of the positioning rods 15a and 15b. The two positioning rods 15 provide four positioning points for the perimeter wall of the column formwork 10, which further helps in the accurate positioning of the column formwork 10. In some embodiments, such as... Figure 1-2 As shown in Figures 6-7, the unit plate 12 comprises multiple groups along the height direction, each group arranged in a ring. The groups are stacked sequentially along the height direction, and the number of unit plates 12 can be adjusted according to the required column height. Adjacent unit plates 12 in the same group are hinged to each other, with the hinge shaft 17 arranged along the height direction. The unit plates 12 in adjacent groups abut against each other by end plates 18 set on their respective end faces.

[0064] Each set of unit panels 12 has two states: pre-assembled and operational. In the pre-assembled state, the unit panels 12 in the same group are hinged sequentially, with the first and last unit panels 12 separated. All unit panels 12 form a curtain-like structure that can be flattened and stacked between multiple sets. In the operational state, the unit panels 12 in the same group are hinged sequentially to form a cylindrical shape and arranged around the casting space 11. This arrangement facilitates storage of unit panels 12 when not in operation and makes assembly easier during operation. The back of each unit panel 12 has end plates 18 at both ends in the height direction. Each end plate 18 has a pair of splicing holes 19. Two or more sets of unit panels 12 are connected to the splicing holes 19 by circular steel bars 34 to achieve vertical stacking of the unit panels 12. The left and right edges of the unit panels 12 are hinged in a staggered hinge shape. Pins pass through the edges of two adjacent unit panels 12 to form a hinge axis 17, connecting the left and right sides of the unit panels 12. Multiple unit panels 12 are hinged into a ring to form a set. The annular interior is the casting space 11. The number of hinged unit plates 12 can be selected according to the diameter of the cylinder to be cast, and the number of spliced ​​unit plates 12 can be selected according to the height of the cylinder to be cast.

[0065] For each group of unit panels 12, at least one set of annular back ribs 20 is configured. The annular back ribs 20 are fitted around the outer periphery of each group of unit panels 12, providing radial support for each group of unit panels 12. The annular back ribs 20 include multiple unit segments 21 spliced ​​sequentially along the circumference. Each unit segment 21 includes multiple ribs 22 extending side by side along the circumference. The circumferential ends of the multiple ribs 22 are provided with reinforcing plates 23 connecting them to each other. The reinforcing plates 23 between adjacent unit segments 21 are abutted and connected to each other. The annular back ribs 20 are assembled from multiple unit segments 21, making transportation and assembly more convenient.

[0066] In some embodiments, such as Figure 8-9As shown, each unit segment 21 includes four reinforcing bars 22, which are arranged at the four corners of the rectangular area on the cross-section of the unit segment 21. Each reinforcing bar 22 is formed by bending a square tube. The reinforcing plate 23 is square and comprises four pieces, located between two radially adjacent reinforcing bars 22 and between two vertically adjacent reinforcing bars 22, respectively. Each reinforcing plate 23 has connecting holes 24 for connecting to adjacent unit segments 21 via connectors 25. The unit segments 21 are interconnected to form a ring.

[0067] In some embodiments, such as Figure 6-10 As shown, the back side of the unit plate 12 also has a rib plate 26 located at the middle of the height direction and a V-shaped rib 28 extending along the height. The rib plate 26 and rib 28 further improve the stress stability of the unit plate 12. The end plate 18 or rib plate 26 of the unit plate 12 is connected to the corresponding annular back rib 20 through radial struts 27. The radial distance between the unit plate 12 and the annular back rib 20 is adjustable in both directions radially inward and outward by the radial struts 27. The annular back rib 20 is generally circular. The cross-sectional shape of the casting space 11 can be similar to (e.g., circles with different diameters) or different from the overall shape of the annular back rib 20. The annular back rib 20 has a first slide rail 39, which extends circumferentially and is located at the middle of the height direction of the annular back rib 20. The first slide rail 39 passes through the radial inner and outer sides of the annular back rib 20. One end of the radial strut 27 is connected to the unit plate, and the other end extends through the first slide rail 39 and is fixed to the outer side of the annular back rib 20.

[0068] like Figure 8 As shown, structural gaps exist between ribs 22a and 22d, and between ribs 22b and 22c, serving as the first slide rail 39. One end of the radial strut 27 is connected to the unit plate 12, and the other end passes through the first slide rail 39 and is fixed to the outside of the annular back rib 20. The first slide rail 39 is located in the middle of the height direction, ensuring that the connection strength at each connection point on the first slide rail 39 is the same, and the connection strength is evenly distributed, facilitating adjustment according to the number and position of the splicing unit plates 12.

[0069] like Figure 10-11As shown, one end of the radial strut 27 is a threaded rod, which passes through the first slide rail 39. The radial strut 27 is fixed to the annular back rib 20 by locking nuts 29 abutting against both sides of the annular back rib 10. Adjustment holes 31 are also provided on the end plate 19 and the rib plate 26. The end of the radial strut 27 connected to the unit plate 12 is U-shaped, and the side plates 43 on both sides of the U-shape are provided with through holes 35. Pins 36 are inserted into the through holes 35 and the adjustment holes 31 to rotatably connect the unit plate 12 to the end of the radial strut 27. The distance between each unit plate 12 and the annular back rib 10 can be adjusted by the threaded rod at the end of the radial strut 27, thereby adjusting the cross-sectional shape of the casting space 11. The radial strut 27 connects the column formwork 10 and the annular back rib 20, providing radial support to the column formwork 10 and allowing adjustment of its cross-sectional shape. The annular back rib 20 also has a second slide rail 41, which extends circumferentially and is located in the middle of the radial direction of the annular back rib 20. The second slide rail 41 penetrates the annular back rib 20 in the height direction. The first slide rail 39 is connected to the second slide rail 41, and its cross-section is cross-shaped. Figure 8 As shown, the structural gaps between stiffeners 22a and 22b, and between stiffeners 22d and 22c, form the second slide rail 41. Figure 2 As shown, bolt 46a passes through the structural gap between the first slide rail 39 of the annular back rib 20 and the vertical back rib 30, connecting the annular back rib 20 and the vertical back rib 30. All annular back ribs 20 are connected along the height direction by the same vertical back rib 30, providing axial support for the column formwork 10 and ensuring that the column formwork 10 is perpendicular to the horizontal plane. Each vertical back rib 30 consists of four square support columns 37, with the ends welded together by short steel pipes or steel plates, and short steel pipes 38 welded at regular intervals in the middle to ensure the structural stability of the vertical back rib 30. Diagonal braces 40 connect the vertical back rib 30 and the support surface 33. Multiple diagonal braces 40 can be set as needed. The diagonal braces 40 can abut against the ground through positioning seats 32, thereby providing support for the column formwork 10 and preventing the column formwork 10 from tilting after pouring.

[0070] like Figure 13-15 As shown, in some embodiments, the second slide rail 41 extends through the annular back rib 20 along the height direction and is connected to the first slide rail 39. The annular back rib 20 and the vertical back rib are connected to each other by a back rib connector 42 that passes through the second slide rail 41.

[0071] The back rib connector 42 is rod-shaped, with its two ends connected to an annular back rib 20 and a vertical back rib 30, respectively. One end connecting to the annular back rib 20 has two opposing connecting plates 44, each with a corresponding through hole 45. The annular back rib 20 is installed between the two connecting plates 44. Bolts 46b pass through the second slide rail 41 and then emerge from the through holes 45 in the connecting plates 44. A fixing nut 47 secures the bolts 46b, allowing for a rotatable connection between the annular back rib 20 and the back rib connector 42. The end of the back rib connector 42 connecting to the vertical back rib 30 is a threaded rod. This threaded rod passes through the structural gap between the support columns 37 of the vertical back rib 30 and is then connected to the vertical back rib 30 via a nut. The support system for concrete column casting disclosed in this application can be assembled into a column formwork 10 by splicing multiple unit plates 12 according to the diameter of the column to be cast. It is provided with annular back ribs 20, vertical back ribs 30 and diagonal braces 40 to provide support for the column formwork 10, ensuring that the column formwork 10 formed by splicing can maintain structural stability under stress after casting.

[0072] This application also discloses a support method for cast concrete columns, including:

[0073] Pre-install column formwork 10 outside the pouring construction area. Specifically, for the perimeter of the concrete column, a corresponding number of unit plates 12 are grouped together and hinged in sequence, with the first and last unit plates in a separate state. The unit plates in the same group have a curtain-like structure and can be flattened and stacked between multiple groups.

[0074] In the pouring construction area, the curtain-like structure is rolled up so that the unit panels 12 of the same group are sequentially hinged to form a cylindrical shape, and column formwork 10 is built around the perimeter of the pouring space, without splicing each unit panel 12.

[0075] Install the annular back rib 20, the vertical back rib 30, and the diagonal brace 40 to provide support for the column formwork 10.

[0076] Radial struts 27 connect each unit plate 12 to the annular back rib 20. The radial struts 27 pull each unit plate 12 outwards until the position of the column template 10 and the shape of the surrounding area align with the casting space 11. Connecting the column template 10 and the annular back rib 20 with radial struts 27 not only provides support for the column template 10 but also allows adjustment of the cross-sectional shape of the casting space 11. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. When technical features from different embodiments are embodied in the same drawing, it can be considered that the drawing also simultaneously discloses combinations of the various embodiments involved.

[0077] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A support system for cast concrete columns, characterized in that, include: The column formwork is a vertical cylindrical shape with a casting space inside. The column formwork includes multiple unit plates that are spliced ​​together in sequence along the circumference. The unit plates include one or more groups along the height direction. Each group is arranged in a ring. The groups are stacked in sequence along the height direction. Adjacent unit plates in the same group are hinged to each other. The hinge axis is arranged along the height direction. The unit plates between adjacent groups are stacked and abut against each other by end plates set on their respective end faces. An annular back rib surrounds the outer periphery of the column template and has radial spacing. For each group of unit plates, at least one annular back rib is configured, and the annular back rib is connected to each of the unit plates. Vertical back ribs are upright and connected to each annular back rib. Multiple vertical back ribs are arranged at intervals along the circumference. Diagonal brace, connecting the vertical back rib and the support surface; Each set of unit boards has the following two states: In the pre-assembled state, the unit panels in the same group are hinged in sequence, and the first and last unit panels are in a separate state. All unit panels are curtain-like structures and can be flattened and stacked between multiple groups. In the working state, the unit plates of the same group are sequentially hinged to form a cylindrical shape and arranged around the casting space; The back side of the unit plate has end plates at both ends in the height direction and a rib plate in the middle. The end plates and / or the rib plates are connected to the corresponding annular back ribs by radial struts. The radial distance between the unit plate and the annular back rib is bidirectionally adjustable via the radial strut.

2. The support system for concrete column casting according to claim 1, characterized in that, Also includes: A positioning component is disposed at the bottom of the pouring space for positioning the column formwork; The positioning component includes at least a plurality of positioning rods with adjustable relative positions. The end of each positioning rod positions the boundary position of the casting space and cooperates with the inner side of the unit plate corresponding to the position to indicate the positioning.

3. The support system for concrete column casting according to claim 1, characterized in that, The annular back rib comprises multiple unit segments spliced ​​sequentially along the circumferential direction. Each unit segment includes multiple reinforcing bars extending side by side along the circumferential direction. The circumferential ends of the multiple reinforcing bars are provided with reinforcing plates connected to each other. The reinforcing plates between adjacent unit segments are abutted and connected to each other.

4. The support system for concrete column casting according to claim 3, characterized in that, Each unit segment includes four reinforcing bars, which are arranged at the four corners of the rectangular area on the cross-section of the unit segment; the reinforcing plate includes four pieces, which are located between two radially adjacent reinforcing bars and between two vertically adjacent reinforcing bars; each reinforcing plate is provided with connecting holes for connecting to adjacent unit segments through connectors.

5. The support system for concrete column casting according to claim 4, characterized in that, The annular back rib is generally circular, and the cross-sectional shape of the casting space is similar to or different from the overall shape of the annular back rib.

6. The support system for concrete column casting according to claim 5, characterized in that, The annular back rib has a first slide rail, which extends circumferentially and is located at the middle of the height direction of the annular back rib. The first slide rail passes through the inner and outer sides of the annular back rib in the radial direction. One end of the radial support rod is connected to the unit plate, and the other end extends through the first slide rail and is fixed to the outer side of the annular back rib.

7. The support system for concrete column casting according to claim 6, characterized in that, The annular back rib also has a second slide rail, which extends circumferentially and is located at the center of the annular back rib in the radial direction. The second slide rail extends through the annular back rib along the height direction and communicates with the first slide rail. The annular back rib and the vertical back rib are connected to each other by a back rib connector that passes through the second slide rail.

8. A method for supporting and protecting cast concrete columns, characterized in that, Based on the support system for concrete column casting according to any one of claims 1 to 7, the support method includes: Pre-install column formwork outside the pouring construction area. Specifically, for the perimeter of the concrete column, a corresponding number of unit panels are grouped together and hinged in sequence, with the first and last unit panels in a separate state. The unit panels in the same group have a curtain-like structure and can be flattened and stacked between multiple groups. In the pouring construction area, the curtain-like structure is rolled up so that the unit panels of the same group are sequentially hinged to form a cylinder, and the column formwork is built on the outer periphery of the pouring space. Install the annular back rib, the vertical back rib, and the diagonal brace; Each unit plate is connected to the annular back rib using radial struts. The unit plates are pulled outwards by the radial struts until the position of the column template and the shape of the surrounding area are consistent with the pouring space.

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