Formwork and construction methods for torsion concrete columns that can be rotated at any angle in large venues

Abstract

This invention belongs to the field of building construction technology, and particularly relates to a formwork and construction method for torsion concrete columns that can rotate at any angle in large venues. It includes: a central shaft for support; multiple frame components arranged vertically, each frame component comprising four telescopic mechanisms; the central shaft being located inside the frame components; and the four telescopic mechanisms connected end-to-end to form a quadrilateral structure; a linkage shaft connecting the telescopic mechanisms and the central shaft, one end of which is rotatably connected to a telescopic mechanism; and a protrusion ring corresponding to the frame component fitted onto the surface of the central shaft. This invention uses multiple telescopic mechanisms, the lengths of which combine to form the shape of the quadrilateral frame component. The shape of the frame component can be adjusted by adjusting the lengths of the telescopic mechanisms as needed. The telescopic structure can adapt to irregularly shaped torsion concrete components at any angle, thus eliminating the need for custom-made formwork of fixed sizes.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and in particular relates to a torsion concrete column formwork that can be rotated at any angle for large venues and its construction method. Background Technology

[0002] Irregularly shaped torsional concrete columns are columns whose cross-sectional geometry differs from the commonly used rectangular cross-section. While meeting structural stiffness and load-bearing capacity requirements, columns with different geometric cross-sections, such as T, L, and cross shapes, are adopted according to architectural design requirements. The ratio of the height to the thickness of each leg of the cross-section is no greater than 4. These irregularly shaped columns replace ordinary frame columns and are rigidly connected to beams to form a structure that bears vertical and horizontal loads.

[0003] The publicly disclosed document (publication number CN110847497A) discloses a steel-concrete composite irregular column, including an irregular concrete main column, with irregular concrete side columns provided on all four outer surfaces of the main column. A connecting and mounting block structure is provided on one outer surface of the irregular concrete side column, and a wooden board limiting connecting strip is provided on the other outer surface of the irregular concrete side column. A wooden board limiting structure is provided on the other side of the lower end of the irregular concrete side column.

[0004] As is known from existing technology, in engineering projects, due to architectural design requirements, we often encounter twisted concrete columns with very complex shapes. The construction of such irregular concrete columns is very difficult. It usually requires the erection of scaffolding and the use of customized steel formwork, which is extremely costly. Using customized formwork can only produce one specific shape and cannot be reused, resulting in great waste. Summary of the Invention

[0005] Based on the technical problems existing in the background technology, the present invention proposes a torsion concrete column formwork that can be rotated at any angle for large venues.

[0006] The present invention proposes a torsion concrete column formwork for large venues that can rotate at any angle, comprising:

[0007] The central axis used for support;

[0008] Multiple frame components are arranged vertically, each frame component includes four telescopic mechanisms, and the central axis is located inside the frame component. The four telescopic mechanisms are connected end to end in sequence to form a quadrilateral structure.

[0009] A linkage shaft is used to connect the telescopic mechanism and the central shaft. One end of the linkage shaft is rotatably connected to the telescopic mechanism. A protruding ring corresponding to the frame assembly is sleeved on the surface of the central shaft.

[0010] A triangular block is used to connect two linkage shafts, and the triangular block is slidably connected to the surface of the protruding ring;

[0011] Support shafts are used to connect the upper and lower frame components, and the two support shafts are arranged to intersect each other.

[0012] Preferably, the telescopic mechanism includes two first connecting shafts and a second connecting shaft for connecting the two first connecting shafts. Both ends of the second connecting shaft are fixedly connected to a locking block. An opening is provided on the first connecting shaft, through which the locking block passes and slides. First bolts are also inserted at both ends of the second connecting shaft. A locking shaft is fixedly connected to one end of the first bolt near the opening. The inner wall of the locking shaft engages with the surface of the locking block. A threaded sleeve is threaded onto the other end of the first bolt.

[0013] Preferably, the two telescopic mechanisms are movably connected together by a rotating shaft, the two ends of the rotating shaft are rotatably connected to the ends of two first connecting shafts respectively, and connecting blocks are provided on the upper and lower surfaces of the rotating shaft. A first rotating component is rotatably connected to the end of the support shaft. The first rotating component is rotatably connected to the surface of the connecting block through the telescopic shaft, and the two ends of the telescopic shaft are rotatably connected to the connecting block and the first rotating component respectively.

[0014] Preferably, the support shaft has a slot, and a locking mechanism is provided between two intersecting support shafts. The locking mechanism includes a first locking frame and a second locking frame, which are staggered and intersect. The two ends of the second locking frame are respectively locked onto the upper and lower surfaces of the intersection of the two support shafts. A third bolt is inserted at the intersection of the first and second locking frames. The two ends of the third bolt are respectively locked onto the left and right surfaces of the intersection of the two support shafts. The third bolt passes through the two slots and is rotatably connected to one side of the first and second locking frames. The other end of the third bolt passes through the other side of the first and second locking frames, and a nut is fitted on its surface.

[0015] Preferably, two adjacent linkage shafts are arranged to cross each other, and a connection point is formed at the intersection. The triangular block is installed at the connection point, and triangular blocks are provided above and below the connection point. The upper and lower triangular blocks are connected together by three fixed shafts, and the fixed shafts are arranged between the two linkage shafts.

[0016] Preferably, a second rotating member is installed on the upper surface of the two telescopic mechanisms facing each other, and a second rotating member is installed on the lower surface of the two telescopic mechanisms facing each other. One end of the four linkage shafts is rotatably connected to the four second rotating members respectively, and two adjacent linkage shafts are arranged in an alternating vertical position.

[0017] Preferably, a connecting block is fixedly installed at both the upper and lower ends of the protruding ring. A sliding groove is provided on the connecting block. Four triangular blocks are respectively arranged on both sides of the central axis. A limiting groove is fixedly installed on the surface of the triangular block. An insert shaft is inserted into the limiting groove. A limiting block is provided at one end of the insert shaft. The limiting block is slidably inserted into the sliding groove.

[0018] Preferably, a groove is formed on the surface of the insert shaft, a second bolt is inserted into the limiting groove, the lower end of the second bolt abuts against the surface of the groove, and a nut is threaded onto the second bolt.

[0019] Preferably, a fourth bolt is inserted into the surface of the protruding ring, the fourth bolt passes through both the protruding ring and the central shaft, and both ends of the fourth bolt are fitted with nuts.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. This invention uses multiple telescopic mechanisms, and the lengths of each telescopic mechanism are combined to form the shape of a quadrilateral frame component. The shape of the frame component can be adjusted by adjusting the length of the telescopic mechanism as needed. The telescopic structure can adapt to irregularly shaped torsional concrete components at any angle, thus eliminating the need for custom-made templates of fixed sizes.

[0022] 2. The length of each side of the template can be adjusted, and adjacent sides can be folded at any angle, so that the template of each segment can be transformed into any shape. Finally, concrete is poured, and after the concrete has solidified, the template is removed. Then, plaster is applied to the surface of the concrete column to form a smooth plane. The template will not bulge when connected in the middle. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the torsion concrete column formwork proposed in this invention;

[0024] Figure 2 This is a side three-dimensional structural diagram of the torsion concrete column formwork proposed in this invention;

[0025] Figure 3 This is a top view schematic diagram of the torsion concrete column formwork proposed in this invention;

[0026] Figure 4 This is a schematic diagram of the structure at the connection between the first and second connecting shafts.

[0027] Figure 5 This is a schematic diagram of the structure at the intersection of the linkage shafts;

[0028] Figure 6 This is a structural diagram of the connection between the support shaft and the telescopic mechanism;

[0029] Figure 7This is a diagram showing the connection structure between the first card frame and the second card frame.

[0030] In the diagram: 1. Central shaft, 2. First connecting shaft, 3. Second connecting shaft, 4. Connecting block, 5. Linkage shaft, 6. Locking shaft, 7. Locking block, 8. First bolt, 9. Threaded sleeve, 10. Triangular block, 11. Protruding ring, 12. First rotating component, 13. Insert shaft, 14. Second bolt, 15. Limiting groove, 16. Opening, 17. Second rotating component, 18. First locking frame, 19. Second locking frame, 20. Third bolt, 21. Support shaft, 22. Slot, 23. Rotating shaft, 24. Fixed shaft, 25. Fourth bolt, 26. Sliding groove, 27. Limiting block, 28. Telescopic shaft. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] Reference Figures 1-7 Formwork for torsion concrete columns that can be rotated at any angle in large venues, including:

[0033] Central shaft 1 used for support;

[0034] Multiple frame components are set up vertically. Each frame component includes four telescopic mechanisms. The central axis 1 is set inside the frame component. The four telescopic mechanisms are connected end to end to form a quadrilateral structure.

[0035] The telescopic mechanism includes two first connecting shafts 2 and a second connecting shaft 3 for connecting the two first connecting shafts 2. Both ends of the second connecting shaft 3 are fixedly connected to locking blocks 7. The first connecting shaft 2 has an opening 16, through which the locking blocks 7 pass and slide within the opening 16. The two ends of the second connecting shaft 3 are also inserted with first bolts 8. The end of the first bolt 8 near the opening 16 is fixedly connected to a locking shaft 6, and the inner wall of the locking shaft 6 engages with the surface of the locking block 7. The other end of the first bolt 8 is threaded with a threaded sleeve 9. By adjusting the relative position between the first connecting shaft 2 and the second connecting shaft 3, the length of the telescopic mechanism can be changed to adapt to the rotation angle requirements. By rotating the nut to adjust the relative position of the first bolt 8, as the first bolt 8 is continuously tightened, the locking shaft 6 at one end engages tightly with the locking block 7, and the locking block 7 comes into close contact with the outer surface of the first connecting shaft 2, thereby achieving the fixing effect between the first connecting shaft 2 and the second connecting shaft 3.

[0036] Two telescopic mechanisms are movably connected together via a rotating shaft 23. The two ends of the rotating shaft 23 are rotatably connected to the ends of two first connecting shafts 2, respectively. Connecting blocks 4 are provided on both the upper and lower surfaces of the rotating shaft 23. A first rotating component 12 is rotatably connected to the end of the support shaft 21. The first rotating component 12 is rotatably connected to the surface of the connecting block 4 via a telescopic shaft 28. The two ends of the telescopic shaft 28 are rotatably connected to the connecting block 4 and the first rotating component 12, respectively. The rotating shaft 23 realizes the connection between the two first connecting shafts 2, and then connects the telescopic mechanisms. The plane in which the first rotating component 12 rotates relative to the support shaft 21 is perpendicular to the plane in which the first rotating component 12 rotates relative to the telescopic shaft 28, realizing a structure that can rotate freely at any angle. The telescopic shaft 28 is telescopic, which can adapt to different situations during rotation.

[0037] A linkage shaft 5 is used to connect the telescopic mechanism and the central shaft 1. One end of the linkage shaft 5 is rotatably connected to the telescopic mechanism. A protruding ring 11 corresponding to the frame assembly is sleeved on the surface of the central shaft 1.

[0038] Triangular block 10 is used to connect two linkage shafts 5, and triangular block 10 is slidably connected to the surface of protruding ring 11;

[0039] Two adjacent linkage shafts 5 are arranged to cross each other, and a connection point is formed at the intersection. Triangular blocks 10 are installed at the connection point, and triangular blocks 10 are set above and below the connection point. The upper and lower triangular blocks 10 are connected together by three fixed shafts 24. The fixed shafts 24 are set between the two linkage shafts 5. The two linkage shafts 5 cross each other, and the connection point of their intersection is wrapped by the two triangular blocks 10. The linkage shafts 5 are connected to the telescopic mechanism. Fixing the linkage shafts 5 can stabilize the telescopic mechanism.

[0040] The upper surfaces of the two telescopic mechanisms facing each other are equipped with second rotating parts 17, and the lower surfaces of the two telescopic mechanisms facing each other are also equipped with second rotating parts 17. One end of each of the four linkage shafts 5 is rotatably connected to the four second rotating parts 17. The two adjacent linkage shafts 5 are arranged in an alternating vertical position. The four linkage shafts 5 are arranged in an alternating vertical position so that the two adjacent linkage shafts 5 can cross each other, and the connection point is fixed by the triangular block 10.

[0041] Connecting blocks are fixedly installed at both the upper and lower ends of the protruding ring 11. A sliding groove 26 is provided on the connecting block 1. Four triangular blocks 10 are respectively set on both sides of the central shaft 1. A limiting groove 15 is fixedly installed on the surface of the triangular block 10. A plug shaft 13 is inserted into the limiting groove 15. A limiting block 27 is provided at one end of the plug shaft 13. The limiting block 27 is slidably inserted into the sliding groove 26. The position of the triangular block 10 relative to the central shaft 1 is fixedly connected by the plug shaft 13. One end of the plug shaft 13 passes through the limiting groove 15, and the other end passes through the sliding groove 26. When the linkage shaft 5 and the telescopic mechanism are fixed, the plug shaft 13 can slide relative to the sliding groove 26 and relative to the limiting groove 15 to adapt to the angle requirements.

[0042] Support shafts 21 are used to connect the upper and lower frame components, and the two support shafts 21 are arranged to intersect each other.

[0043] A slot 22 is provided inside the support shaft 21. A locking mechanism is provided between two intersecting support shafts 21. The locking mechanism includes a first locking frame 18 and a second locking frame 19. The first locking frame 18 and the second locking frame 19 are staggered and form an intersection point. The two ends of the second locking frame 19 are respectively locked onto the upper and lower surfaces of the intersection point of the two support shafts 21. The two ends of the third bolt 20 are respectively locked onto the left and right surfaces of the intersection point of the two support shafts 21. The third bolt 20 is inserted at the intersection point of the first locking frame 18 and the second locking frame 19. The bolt 20 passes through two slots 22 and is rotatably connected to one side of the first frame 18 and the second frame 19. The other end of the third bolt 20 passes through the other side of the first frame 18 and the second frame 19, and a nut is fitted on its surface. After the distance between the upper and lower frame components is determined, the intersection position between the two support shafts 21 is changed accordingly. The support shafts 21 are used to support and connect the upper and lower frame components. By rotating the nut, the intersection angle of the first frame 18 and the second frame 19 is fixed, thereby determining the intersection angle of the two support shafts 21.

[0044] A groove is formed on the surface of the insert shaft 13. A second bolt 14 is inserted into the limiting groove 15. The lower end of the second bolt 14 abuts against the surface of the groove. A nut is threaded onto the second bolt 14. By rotating the second bolt 14, its lower end abuts against the groove and is fixed by the nut, thereby fixing the position of the insert shaft 13 relative to the limiting groove 15. A fourth bolt 25 is inserted into the surface of the protruding ring 11. The fourth bolt 25 passes through both the protruding ring 11 and the central shaft 1. Nuts are fitted on both ends of the fourth bolt 25.

[0045] The construction method is as follows: Before shaping the building, the concrete column is vertically divided into many very small segments. The shape of the template is adjusted according to the needs of the concrete column shape. The central shaft 1 is installed in the center position. The length of each telescopic mechanism is adjusted according to the irregular structure. The positions of the two ends of the second connecting shaft 3 relative to the central shaft 1 are changed. After the first connecting shaft 2 and the second connecting shaft 3 are adjusted to the appropriate positions, the first bolt 8 is pulled so that the locking shaft 6 at one end of the first bolt 8 is tightly fitted with the surface of the locking block 7. The other end of the first bolt 8 is fixed by the threaded sleeve 9, thereby fixing the relative position between the first connecting shaft 2 and the second connecting shaft 3.

[0046] Each second connecting shaft 3 is rotatably connected to a linkage shaft 5. During the shape adjustment process, the angular position of the linkage shaft 5 will change. After the position of the linkage shaft 5 is determined, the second bolt 14 is pressed against the groove in the insert shaft 13, and the position of the second bolt 14 is fixed by the nut. The two linkage shafts 5 are arranged crosswise together and limited by the triangular block 10. The triangular block 10 is limited by the insert shaft 13, thereby limiting the position of the telescopic mechanism.

[0047] After the single-layer structure is installed, the upper and lower frame components are supported by the support shaft 21. The spacing between the upper and lower frame components determines the position of the intersection point of the two support shafts 21. This intersection point is fixed by a snap-fit ​​mechanism. The first snap-fit ​​frame 18 and the second snap-fit ​​frame 19 are also staggered and are snap-fitted to the support shaft 21. The first snap-fit ​​frame 18 and the second snap-fit ​​frame 19 are tightened by the third bolt 20 to fix the angle of the two support shafts 21.

[0048] The lengths of each telescopic mechanism combine to form the shape of a quadrilateral frame component. The shape of the frame component can be adjusted by adjusting the length of the telescopic mechanism as needed. The telescopic structure can adapt to irregularly shaped twisted concrete components at any angle, thus eliminating the need for custom-made templates of fixed sizes. Each segment uses this template, and the length of each side of the template can be adjusted, and adjacent sides can be folded at any angle. In this way, the template of each segment can be transformed into any shape. Finally, concrete is poured, and after the concrete has solidified, the formwork is removed. Then, plaster is applied to the surface of the concrete column to form a smooth plane. The connection in the middle will not cause the formwork to bulge.

[0049] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A torsion concrete column formwork for large venues that can rotate at any angle, characterized in that, include: The central axis (1) is used for support; Multiple frame components are arranged vertically, each frame component includes four telescopic mechanisms, and the central shaft (1) is located inside the frame component. The four telescopic mechanisms are connected end to end in sequence to form a quadrilateral structure. A linkage shaft (5) is used to connect the telescopic mechanism and the central shaft (1). One end of the linkage shaft (5) is rotatably connected to the telescopic mechanism. A protruding ring (11) corresponding to the frame assembly is sleeved on the surface of the central shaft (1). A triangular block (10) is used to connect two linkage shafts (5), and the triangular block (10) is slidably connected to the surface of the protruding ring (11); Support shafts (21) for connecting the upper and lower frame components, the two support shafts (21) are arranged to intersect each other; The telescopic mechanism includes two first connecting shafts (2) and a second connecting shaft (3) for connecting the two first connecting shafts (2). Both ends of the second connecting shaft (3) are fixedly connected with a locking block (7). An opening (16) is provided on the first connecting shaft (2). The locking block (7) passes through the opening (16) and slides in the opening (16). First bolts (8) are also inserted at both ends of the second connecting shaft (3). A locking shaft (6) is fixedly connected to one end of the first bolt (8) near the opening (16). The inner wall of the locking shaft (6) is engaged with the surface of the locking block (7). A threaded sleeve (9) is threaded onto the other end of the first bolt (8). The two telescopic mechanisms are movably connected together by a rotating shaft (23). The two ends of the rotating shaft (23) are rotatably connected to the ends of the two first connecting shafts (2). The upper and lower surfaces of the rotating shaft (23) are provided with connecting blocks (4). The end of the support shaft (21) is rotatably connected to a first rotating component (12). The first rotating component (12) is rotatably connected to the surface of the connecting block (4) through a telescopic shaft (28). The two ends of the telescopic shaft (28) are rotatably connected to the connecting block (4) and the first rotating component (12) respectively.

2. The torsion concrete column formwork for large venues that can rotate at any angle according to claim 1, characterized in that, The support shaft (21) has a slot (22) inside. A snap-fit ​​mechanism is provided between the two intersecting support shafts (21). The snap-fit ​​mechanism includes a first snap-fit ​​frame (18) and a second snap-fit ​​frame (19). The first snap-fit ​​frame (18) and the second snap-fit ​​frame (19) are staggered and intersected. The two ends of the second snap-fit ​​frame (19) are snapped into the upper and lower surfaces of the intersection of the two support shafts (21). A third bolt (20) is inserted at the intersection of the first snap-fit ​​frame (18) and the second snap-fit ​​frame (19). The two ends of the third bolt (20) are snapped into the left and right surfaces of the intersection of the two support shafts (21). The third bolt (20) passes through the two slots (22) and is rotatably connected to one side of the first snap-fit ​​frame (18) and the second snap-fit ​​frame (19). The other end of the third bolt (20) passes through the other side of the first snap-fit ​​frame (18) and the second snap-fit ​​frame (19), and a nut is fitted on its surface.

3. The torsion concrete column formwork for large venues that can rotate at any angle according to claim 1, characterized in that, The two adjacent linkage shafts (5) are arranged to cross each other, and a connection point is formed at the intersection. The triangular block (10) is installed at the connection point, and triangular blocks (10) are arranged above and below the connection point. The upper and lower triangular blocks (10) are connected together by three fixed shafts (24), and the fixed shafts (24) are arranged between the two linkage shafts (5).

4. The torsion concrete column formwork for large venues that can rotate at any angle according to claim 3, characterized in that, The upper surfaces of the two telescopic mechanisms facing each other are equipped with second rotating parts (17), and the lower surfaces of the two telescopic mechanisms facing each other are equipped with second rotating parts (17). One end of each of the four linkage shafts (5) is rotatably connected to the four second rotating parts (17), and the two adjacent linkage shafts (5) are arranged in an alternating vertical position.

5. The torsion concrete column formwork for large venues that can rotate at any angle according to claim 4, characterized in that, The upper and lower ends of the protruding ring (11) are fixedly installed with connecting blocks. The connecting blocks are provided with sliding grooves (26). The four triangular blocks (10) are respectively set on both sides of the central shaft (1). Limiting grooves (15) are fixedly installed on the surface of the triangular blocks (10). Insertion shafts (13) are inserted into the limiting grooves (15). One end of the insertion shafts (13) is provided with limiting blocks (27). The limiting blocks (27) are slidably inserted into the sliding grooves (26).

6. The torsion concrete column formwork for large venues that can rotate at any angle according to claim 5, characterized in that, The insert shaft (13) has a groove on its surface, and a second bolt (14) is inserted into the limiting groove (15). The lower end of the second bolt (14) abuts against the surface of the groove, and a nut is threaded onto the second bolt (14).

7. The torsion concrete column formwork for large venues that can rotate at any angle according to claim 6, characterized in that, A fourth bolt (25) is inserted into the surface of the protruding ring (11). The fourth bolt (25) passes through both the protruding ring (11) and the central shaft (1). Nuts are fitted at both ends of the fourth bolt (25).

8. The construction method for a torsion concrete column formwork that can be rotated at any angle in a large venue according to claim 7, characterized in that, The steps are as follows: Before the building is shaped, the concrete column is divided into many very small segments along the vertical direction. The shape of the template is adjusted according to the needs of the concrete column shape. The central shaft (1) is installed in the center position. The length of each telescopic mechanism is adjusted according to the irregular structure. The position of the two ends of the second connecting shaft (3) relative to the central shaft (1) is changed. When the first connecting shaft (2) and the second connecting shaft (3) are adjusted to the appropriate position, the first bolt (8) is pulled so that the locking shaft (6) at one end of the first bolt (8) is tightly fitted with the surface of the locking block (7). The other end of the first bolt (8) is fixed by the threaded sleeve (9), thereby fixing the relative position between the first connecting shaft (2) and the second connecting shaft (3). Each second connecting shaft (3) is rotatably connected to a linkage shaft (5). During the shape adjustment process, the angle position of the linkage shaft (5) will change. After the position of the linkage shaft (5) is determined, the second bolt (14) is pressed against the groove in the insert shaft (13), and the position of the second bolt (14) is fixed by the nut. The two linkage shafts (5) are arranged crosswise together and limited by the triangular block (10). The triangular block (10) is limited by the insert shaft (13), thereby limiting the position of the telescopic mechanism. After the single-layer structure is installed, the upper and lower frame components are supported by the support shaft (21). The distance between the upper and lower frame components determines the position of the intersection point of the two support shafts (21). The intersection point is fixed by the snap-fit ​​mechanism. The first snap-fit ​​frame (18) and the second snap-fit ​​frame (19) are also intersecting each other and are snap-fitted to the support shaft (21). The first snap-fit ​​frame (18) and the second snap-fit ​​frame (19) are tightened by the third bolt (20) to fix the angle of the two support shafts (21). The lengths of each telescopic mechanism combine to form the shape of a quadrilateral frame component. The shape of the frame component can be adjusted by adjusting the length of the telescopic mechanism as needed. The telescopic structure can adapt to irregularly shaped twisted concrete components at any angle, thus eliminating the need for custom-made templates of fixed sizes. Each segment uses this template, and the length of each side of the template can be adjusted, and adjacent sides can be folded at any angle. In this way, the template of each segment can be transformed into any shape. Finally, concrete is poured, and after the concrete has solidified, the formwork is removed. Then, plaster is applied to the surface of the concrete column to form a smooth plane. The connection in the middle will not cause the formwork to bulge.

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