A method for post-cast floor slab construction at column base

Abstract

This invention discloses a method for constructing a post-cast concrete floor at the column base, comprising the following steps: 1. Fabricating a steel template for post-cast concrete at the column base; 2. Positioning multiple arc-shaped template components; 3. Adjusting the elevation of the multiple arc-shaped template components; 4. Connecting the multiple arc-shaped template components; 5. Constructing the main concrete floor structure; 6. Treating the joint between the main concrete floor structure and the column base; 7. Constructing the post-cast concrete section at the column base. This invention offers a simple construction method. By setting up a ring-shaped steel template for post-cast concrete at the column base around the perimeter of the structural column, a space is formed between the template and the column base. During concrete pouring, the main concrete floor structure around the ring template is poured first, followed by the post-cast concrete section at the column base. Simultaneously, a flexible buffer layer is placed between the main concrete floor structure and the post-cast concrete section at the column base to form a ring-shaped expansion joint. This ensures that the joint at the column base is aesthetically pleasing and straight, and that the ground surface is free of hollow areas and cracks.

Description

Technical Field

[0001] This invention belongs to the field of floor construction technology, specifically relating to a method for post-cast floor construction at the column base. Background Technology

[0002] Currently, during floor construction, there are two main methods for treating joints at the base of structural columns. One method involves using 20mm thick and 50mm wide foam boards as joint formwork around the column base. However, this method is prone to foam board displacement and detachment during concrete pouring, leading to substandard quality control issues such as joint continuity, surface cracks, and hollow areas. The other method uses 20mm thick and 50mm wide wooden formwork as joint formwork around the column base. This method, however, is prone to surface hollow areas, chipping, and cracks when removing the formwork after the surface has reached its curing period; it also presents quality problems such as the inability to remove the wooden formwork.

[0003] When constructing large-area floor slabs such as those for parking garages, the corresponding structural columns have varying dimensions. Traditional formwork construction methods are labor-intensive and resource-intensive when treating joints at the column bases, and the final structural quality cannot be effectively guaranteed. Therefore, a post-cast floor slab construction method for the column base areas is needed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a construction method for post-cast floor slab at the column base, which is simple to construct. A ring-shaped steel template for post-cast floor slab at the column base is erected around the column base of the structural column, so that a space is formed between the steel template and the column base. When pouring the floor slab, the main body of the floor slab around the ring template is poured first, and then the post-cast section of the floor slab at the column base is constructed. At the same time, a flexible buffer layer is set between the main body of the floor slab and the post-cast section of the floor slab at the column base to form a ring expansion joint. This makes the joint at the column base of the floor slab construction aesthetically pleasing and straight, and the ground free from hollowness and cracking.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a method for post-cast floor slab construction at the column base, characterized in that the method includes the following steps:

[0006] Step 1: Fabricate and manufacture the joint steel formwork for post-casting of column bases: Fabricate multiple arc-shaped steel formwork panels and formwork connection components, and weld an arc-shaped rib on the upper and lower sides of the concave arc surface of each arc-shaped steel formwork panel to form an arc-shaped formwork assembly. Set a height adjustment component at each end of the arc-shaped formwork assembly, and connect a support adjustment component to each height adjustment component.

[0007] The height adjustment component includes an adjusting bolt that runs from top to bottom through two arc-shaped ribs and a first nut threaded onto the adjusting bolt. The first nut is located between the two arc-shaped ribs arranged vertically.

[0008] The support adjustment assembly includes a vertical anchor and a telescopic rod connected between the vertical anchor and the first nut;

[0009] Step 2: Positioning multiple curved formwork components: Based on the post-cast design range of the column base, set multiple anchor holes on the ground around the column base for anchoring vertical anchors. Place multiple curved formwork components evenly around the column base of the structural column and adjust the length of multiple expansion rods so that the bottom of multiple vertical anchors is inserted into multiple anchor holes respectively.

[0010] A template connecting component is provided between two adjacent arc-shaped template components;

[0011] Step 3: Adjust the elevation of multiple arc-shaped template components: Install a locator on the upper part of both ends of an arc-shaped rib on the upper part of each arc-shaped template component, and adjust the elevation of the arc-shaped template component by adjusting the length of the adjusting bolt extending to the bottom of the arc-shaped template component until the Z-axis values ​​of the locators installed on multiple arc-shaped template components are consistent. Then, anchor multiple vertical anchors into multiple anchor holes respectively.

[0012] Step 4: Connect multiple arc-shaped template components: Connect and fix two adjacent arc-shaped template components through the template connecting components to form a ring-shaped joint steel template;

[0013] Step 5: Construct the main body of the floor slab: Based on the designed thickness of the floor slab, pour concrete on the outside of the joint steel formwork to construct the main body of the floor slab;

[0014] Step 6: Joint treatment between the main floor structure and column base: After the concrete outside the joint steel formwork for the post-cast column base reaches the design strength, the joint steel formwork for the post-cast column base is removed, and a flexible buffer layer is set on the circular side of the main floor structure at the column base to form an annular expansion joint.

[0015] Step 7: Concrete is poured between the outer side of the column base and the annular expansion joint to form the post-cast section of the floor slab column base.

[0016] The above-mentioned method for constructing a post-cast floor at the column base is characterized in that: in step one, multiple vertical support plates are provided between the two symmetrically arranged arc-shaped ribs, and the arc-shaped steel template panel and the arc-shaped ribs, the arc-shaped steel template panel and the vertical support plates, and the arc-shaped ribs and the vertical support plates are all perpendicular to each other.

[0017] The above-mentioned method for constructing a post-cast floor at the column base is characterized in that: both ends of the arc-shaped rib are provided with bolt holes for the adjusting bolts to pass through, and the bolt holes are connected to the internal threaded holes on the corresponding first nuts.

[0018] The above-mentioned method for constructing a post-cast floor at the column base is characterized in that: the telescopic rod includes an internal threaded sleeve and two threaded rods respectively threaded through both ends of the internal threaded sleeve;

[0019] One end of one of the threaded rods is fixed to the first nut, and one end of the other threaded rod is fixed with a U-shaped positioning block for the vertical anchor to pass through.

[0020] The above-mentioned method for constructing a post-cast floor at the column base is characterized in that: one side of the U-shaped positioning block is provided with a fastening bolt for tightening the vertical anchor.

[0021] The above-mentioned method for constructing a post-cast floor at the column base is characterized in that: the template connection assembly includes a splicing section template connected between two adjacent arc-shaped steel template panels and an arc-shaped connecting rib disposed on the concave arc surface of the splicing section template. One end of the arc-shaped connecting rib extends to the space between two arc-shaped rib plates in an adjacent arc-shaped template assembly, and the other end of the arc-shaped connecting rib extends to the space between two arc-shaped rib plates in another adjacent arc-shaped template assembly.

[0022] The above-mentioned method for post-cast floor slab construction at column base is characterized in that: each end of the two arc-shaped connecting ribs in the arc-shaped template assembly is provided with a hanging ear, and a threaded top rod for pressing the arc-shaped rib plate against the arc-shaped steel template panel is threadedly connected to the hanging ear.

[0023] The above-mentioned method for constructing a post-cast floor at the column base is characterized in that: a second nut that mates with a threaded top rod is fixed on the hanging ear, the hanging ear has a through hole for the threaded top rod to pass through, and the through hole is connected to the threaded hole of the second nut.

[0024] The above-mentioned method for constructing a post-cast floor at the column base is characterized in that: the locator is a GPS locator.

[0025] The above-mentioned method for constructing a post-cast floor at the column base is characterized in that: in step three, when adjusting the elevation of multiple arc-shaped template components, when a gap appears between the bottom of the arc-shaped steel template panel and the ground, mortar is used to seal the gap between the bottom of the arc-shaped steel template panel and the ground.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] 1. This invention connects multiple arc-shaped template components together to form a closed ring template through a template connecting assembly. The ring template is placed around the base of the structural column, creating a space between the ring template and the base of the structural column. When pouring the floor slab, the outer ring of the ring template is poured first, which facilitates the subsequent pouring of the floor slab within a certain range at the base of the structural column. This results in aesthetically pleasing and straight joints at the base of the floor slab, and the absence of hollow areas and cracks in the ground.

[0028] 2. The multiple arc-shaped template components of this invention can be used to achieve post-casting construction of the foundation column base for different structural column sizes by changing the size of the template connection components, which can effectively improve the reusability of the steel template.

[0029] 3. By setting vertical anchors and connecting telescopic rods between the vertical anchors and the first nut, the present invention can effectively fix the steel template by anchoring the vertical anchors to the ground. At the same time, by adjusting the length of the telescopic rods, the connection accuracy at the joints of multiple arc-shaped template components can be ensured.

[0030] 4. By installing a locator on the upper ends of an arc-shaped rib on the upper part of each arc-shaped template assembly, this invention can not only ensure the levelness of the arc-shaped template assembly, but also ensure that the elevation of multiple arc-shaped template assemblies is consistent. This reduces the cumulative effect of human measurement errors, greatly increases construction accuracy, ensures construction quality, and shortens the construction cycle.

[0031] 5. This invention forms an annular expansion joint by setting a flexible buffer layer between the main body of the floor and the post-cast section at the base of the floor column, so that there is a certain gap for expansion and contraction between the main body of the floor and the post-cast section at the base of the floor column, thereby further preventing the ground from becoming hollow and cracked.

[0032] In summary, the construction method of this invention is simple. By setting up a ring-shaped steel formwork for post-casting of the column base around the column base, a space is formed between the steel formwork and the column base. When pouring the floor slab, the main body of the floor slab around the ring-shaped formwork is poured first, and then the post-cast section of the floor slab at the column base is constructed. At the same time, a flexible buffer layer is set between the main body of the floor slab and the post-cast section of the floor slab at the column base to form a ring-shaped expansion joint. This makes the joint at the column base of the floor slab construction aesthetically pleasing and straight, and the ground free from hollowness and cracking.

[0033] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0034] Figure 1 This is a flowchart of the method of the present invention.

[0035] Figure 2This is a schematic diagram of the jointed steel formwork for post-casting of column bases according to the present invention.

[0036] Figure 3 This is a schematic diagram of the template connection component of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1—Arc-shaped steel formwork panel; 2—Arc-shaped rib plate; 3—Vertical support plate;

[0039] 4—Adjusting bolt; 5—First nut; 6—Telescopic rod;

[0040] 6-1—Internal threaded sleeve; 6-2—Threaded rod; 7—U-shaped locating block;

[0041] 8—Vertical anchors; 9—Fastening bolts; 10—Splicing section template;

[0042] 11—Arc-shaped connecting rib; 12—Hanging lug; 13—Threaded push rod;

[0043] 14—Second nut; 15—Positioner. Detailed Implementation

[0044] like Figure 1 The method shown is a post-cast floor slab construction method at the column base, which includes the following steps:

[0045] Step 1: Fabricate and install the joint steel formwork for post-casting at the column base: (e.g.) Figure 2 As shown, multiple arc-shaped steel template panels 1 and template connecting components are processed, and an arc-shaped rib plate 2 is welded to the upper and lower sides of the concave arc surface of each arc-shaped steel template panel 1 to form an arc-shaped template assembly. An adjustment component is set at each end of the arc-shaped template assembly, and a support adjustment component is connected to each adjustment component.

[0046] The height adjustment component includes an adjusting bolt 4 that runs from top to bottom through two arc-shaped ribs 2 and a first nut 5 threaded onto the adjusting bolt 4. The first nut 5 is located between the two arc-shaped ribs 2 arranged vertically.

[0047] The support adjustment assembly includes a vertical anchor 8 and a telescopic rod 6 connected between the vertical anchor 8 and the first nut 5.

[0048] Step 2: Positioning multiple curved template components: According to the post-cast design range of the column base, set multiple anchor holes on the ground around the column base for anchoring vertical anchors 8. Place multiple curved template components evenly around the column base of the structural column and adjust the length of multiple telescopic rods 6 so that the bottom of multiple vertical anchors 8 are inserted into multiple anchor holes respectively.

[0049] A template connecting component is provided between two adjacent arc-shaped template components;

[0050] Step 3: Adjust the elevation of multiple arc-shaped template components: Install a locator 15 on the upper part of both ends of an arc-shaped rib 2 on the upper part of each arc-shaped template component, and adjust the elevation of the arc-shaped template component by adjusting the length of the adjusting bolt 4 extending to the bottom of the arc-shaped template component until the Z-axis values ​​of the locators 15 installed on multiple arc-shaped template components are consistent. Then, anchor multiple vertical anchors 8 into multiple anchor holes respectively.

[0051] Step 4: Connect multiple arc-shaped template components: Connect and fix two adjacent arc-shaped template components through the template connecting components to form a ring-shaped joint steel template;

[0052] Step 5: Construct the main body of the floor slab: Based on the designed thickness of the floor slab, pour concrete on the outside of the joint steel formwork to construct the main body of the floor slab;

[0053] Step 6: Joint treatment between the main floor structure and column base: After the concrete outside the joint steel formwork for the post-cast column base reaches the design strength, the joint steel formwork for the post-cast column base is removed, and a flexible buffer layer is set on the circular side of the main floor structure at the column base to form an annular expansion joint.

[0054] Step 7: Concrete is poured between the outer side of the column base and the annular expansion joint to form the post-cast section of the floor slab column base.

[0055] In practical use, multiple arc-shaped template components are connected together to form a closed ring template. This ring template is then placed around the base of the structural column, creating a space between the ring template and the base of the column. When pouring the floor slab, the outer ring of the ring template is poured first, which facilitates the subsequent pouring of the floor slab within a certain range at the base of the structural column. This results in aesthetically pleasing and straight joints at the base of the column, and the absence of hollow areas or cracks in the floor slab.

[0056] It should be noted that the use of multiple curved formwork components allows for the construction of post-cast concrete foundations for different structural column sizes by changing the dimensions of the formwork connection components, effectively improving the reusability of the steel formwork.

[0057] In practice, by setting the first nut 5 and adjusting bolt 4 on the arc-shaped rib plate 2 of the arc-shaped template assembly as height adjustment components, the levelness of the arc-shaped template assembly can be adjusted, thereby improving the quality of the floor construction.

[0058] In practice, by setting vertical anchors 8 and connecting telescopic rods 6 between the vertical anchors 8 and the first nut 5, the steel template can be effectively fixed by anchoring the vertical anchors 8 to the ground. At the same time, by adjusting the length of the telescopic rods 6, the connection accuracy at the joints of multiple arc-shaped template components can be ensured.

[0059] In practice, by installing a locator 15 on each end of an arc-shaped rib 2 on the upper part of each arc-shaped template assembly, not only can the levelness of the arc-shaped template assembly be guaranteed, but also the elevation of multiple arc-shaped template assemblies can be kept consistent. This reduces the cumulative effect of human measurement errors, greatly increases construction accuracy, ensures construction quality, and shortens the construction cycle.

[0060] It should be noted that by setting a flexible buffer layer between the main body of the floor and the post-cast section at the base of the floor column to form an annular expansion joint, a certain gap for expansion and contraction can be created between the main body of the floor and the post-cast section at the base of the floor column, thereby effectively preventing the ground from becoming hollow and cracking.

[0061] In practice, the post-cast section at the base of the foundation column is a ring structure with a ring width of about 350mm.

[0062] In practice, the concave arc surface of the arc-shaped steel formwork panel 1 is the inner side of the arc-shaped steel formwork panel 1.

[0063] In practice, a template connecting component can be set between each pair of adjacent arc-shaped template components, or multiple arc-shaped template components can be connected end to end in sequence, and then a template connecting component can be connected between the first arc-shaped template component and the last arc-shaped template component.

[0064] In this embodiment, in step one, multiple vertical support plates 3 are provided between the two symmetrically arranged arc-shaped ribs 2. The arc-shaped steel template panel 1 and the arc-shaped ribs 2, the arc-shaped steel template panel 1 and the vertical support plates 3, and the arc-shaped ribs 2 and the vertical support plates 3 are all perpendicular to each other.

[0065] In actual use, both ends of the arc-shaped rib plate 2 are provided with a slope. When the two arc-shaped template components are connected in sequence, a V-shaped opening is formed between the two adjacent arc-shaped rib plates 2 in the circumferential direction, with the larger end of the opening being located away from the arc-shaped steel template panel 1.

[0066] It should be noted that the two ends of the convex arc side of the arc-shaped rib plate 2 are flush with the two ends of the arc-shaped steel template panel 1.

[0067] In this embodiment, both ends of the arc-shaped rib plate 2 are provided with bolt holes for the adjusting bolt 4 to pass through, and the bolt holes are connected to the internal threaded holes on the corresponding first nut 5.

[0068] In actual use, the adjusting bolt 4 is perpendicular to the arc-shaped rib plate 2. The first nut 5 is welded and fixed to both arc-shaped rib plates 2. The adjusting bolt 4 passes through the upper arc-shaped rib plate 2, the first nut 5 and the lower arc-shaped rib plate 2 from top to bottom. The height of the arc-shaped template assembly is adjusted by adjusting the length of the adjusting bolt 4 extending to the bottom of the lower arc-shaped rib plate 2 and tightening the lower end of the adjusting bolt 4 against the ground.

[0069] In this embodiment, the telescopic rod 6 includes an internal threaded sleeve 6-1 and two threaded rods 6-2 respectively threaded through both ends of the internal threaded sleeve 6-1;

[0070] One end of one of the threaded rods 6-2 is fixed to the first nut 5, and one end of the other threaded rod 6-2 is fixed with a U-shaped positioning block 7 for the vertical anchor 8 to pass through.

[0071] In actual use, by rotating the internal threaded sleeve 6-1, the two threaded rods 6-2 can be moved away from or closer to each other, thereby extending or shortening the telescopic rod 6.

[0072] In actual use, the threaded rod 6-2 and the arc-shaped steel template panel 1 connected to it are perpendicular.

[0073] It should be noted that the U-shaped positioning block 7 is placed horizontally, so that the vertical anchor 8 passes vertically through the U-shaped groove of the U-shaped positioning block 7.

[0074] In this embodiment, a fastening bolt 9 for fastening the vertical anchor 8 is provided on one side of the U-shaped positioning block 7.

[0075] In actual use, an internal threaded through hole is provided on one side wall of the U-shaped positioning block 7 to cooperate with the fastening bolt 9. The fastening bolt 9 is threadedly installed in the internal threaded through hole, and by tightening the fastening bolt 9, the end of the fastening bolt 9 will press against the vertical anchor 8.

[0076] In practice, the fastening bolt 9 and the vertical anchor 8 are perpendicular to each other, and the vertical anchor 8 is the anchor bolt.

[0077] like Figure 3 As shown, in this embodiment, the template connecting assembly includes a splicing section template 10 connected between two adjacent arc-shaped steel template panels 1 and an arc-shaped connecting rib 11 disposed on the concave arc surface of the splicing section template 10. One end of the arc-shaped connecting rib 11 extends to the space between two arc-shaped rib plates 2 in an adjacent arc-shaped template assembly, and the other end of the arc-shaped connecting rib 11 extends to the space between two arc-shaped rib plates 2 in another adjacent arc-shaped template assembly.

[0078] In actual use, the upper part of the splicing section template 10 is flush with the upper part of the arc-shaped steel template panel 1, the lower part of the splicing section template 10 is flush with the lower part of the arc-shaped steel template panel 1, and the two ends of the splicing section template 10 are respectively in close contact with the ends of the two adjacent arc-shaped steel template panels 1.

[0079] It should be noted that the splicing section template 10 is an arc-shaped steel template. The splicing section template 10 is welded to the arc-shaped connecting rib 11, and the two ends of the arc-shaped connecting rib 11 are respectively in close contact with the concave arc surfaces of the two arc-shaped steel template panels 1.

[0080] In this embodiment, each end of the two arc-shaped connecting ribs 11 in the arc-shaped template assembly is provided with a hanging ear 12, and a threaded top rod 13 for pressing the arc-shaped rib plate 2 against the arc-shaped steel template panel 1 is threadedly connected to the hanging ear 12.

[0081] In actual use, the threaded top rod 13 and the arc-shaped steel template panel 1 connected to it are perpendicular to each other, and the hanging ear 12 is welded between the concave arc sides of the two opposite arc-shaped connecting ribs 11.

[0082] In this embodiment, a second nut 14 that cooperates with the threaded push rod 13 is fixed on the lug 12. The lug 12 has a through hole for the threaded push rod 13 to pass through, and the through hole is connected to the threaded hole of the second nut 14.

[0083] In actual use, in step four, when connecting two adjacent arc-shaped template components, first place the splicing section template 10 between the arc-shaped steel template panels 1 of the two arc-shaped template components, and make the top of the splicing section template 10 flush with the top of the arc-shaped steel template panel 1. Then, turn the threaded top rod 13 on the hanging lug 12 at the ends of the arc-shaped template components on both sides, so that the threaded top rod 13 presses against the arc-shaped connecting rib 11, thereby making the two ends of the template connecting component securely connected to the arc-shaped template components on both sides.

[0084] In this embodiment, the locator 15 is a GPS locator, and the locator 15 communicates with a computer.

[0085] In practical use, the use of GPS positioning reduces the cumulative effect of human measurement errors, greatly increases construction accuracy, ensures construction quality, and shortens the construction cycle.

[0086] In this embodiment, in step three, when adjusting the elevation of the multiple arc-shaped template components, when a gap appears between the bottom of the arc-shaped steel template panel 1 and the ground, mortar is used to seal the gap between the bottom of the arc-shaped steel template panel 1 and the ground.

[0087] In actual use, when adjusting the elevation of multiple curved template components, try to make the bottom of more curved template components fit in close contact with the ground, and try to avoid gaps between the bottom of the curved steel template panel 1 and the ground.

[0088] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A method for constructing a post-cast floor slab at the column base, characterized in that, The method includes the following steps: Step 1: Processing and manufacturing the joint steel formwork for post-casting of column base: Process multiple arc-shaped steel formwork panels (1) and formwork connection components, and weld an arc-shaped rib (2) on the upper and lower sides of the concave arc surface of each arc-shaped steel formwork panel (1) to form an arc-shaped formwork assembly, and set a height adjustment component at each end of the arc-shaped formwork assembly, and connect a support adjustment component to each height adjustment component; The height adjustment component includes an adjusting bolt (4) that runs from top to bottom through two arc-shaped ribs (2) and a first nut (5) threaded onto the adjusting bolt (4). The first nut (5) is located between the two arc-shaped ribs (2) arranged vertically. The support adjustment assembly includes a vertical anchor (8) and a telescopic rod (6) connected between the vertical anchor (8) and the first nut (5); Step 2: Positioning multiple arc-shaped template components: According to the post-cast design range of the column root, set multiple anchor holes on the ground around the column root for anchoring vertical anchors (8), place multiple arc-shaped template components evenly around the column root of the structural column, and adjust the length of multiple telescopic rods (6) so that the bottom of multiple vertical anchors (8) are inserted into multiple anchor holes respectively. A template connecting component is provided between two adjacent arc-shaped template components; Step 3: Adjust the elevation of multiple arc-shaped template components: Install a locator (15) on the upper ends of an arc-shaped rib (2) on the upper part of each arc-shaped template component, and adjust the elevation of the arc-shaped template component by adjusting the length of the adjusting bolt (4) extending to the bottom of the arc-shaped template component until the Z-axis values ​​of the locators (15) installed on multiple arc-shaped template components are consistent. Then, anchor multiple vertical anchors (8) into multiple anchor holes respectively. Step 4: Connect multiple arc-shaped template components: Connect and fix two adjacent arc-shaped template components through the template connecting components to form a ring-shaped joint steel template; Step 5: Construct the main body of the floor slab: Based on the designed thickness of the floor slab, pour concrete on the outside of the joint steel formwork to construct the main body of the floor slab; Step 6: Joint treatment between the main floor structure and column base: After the concrete outside the joint steel formwork for the post-cast column base reaches the design strength, the joint steel formwork for the post-cast column base is removed, and a flexible buffer layer is set on the circular side of the main floor structure at the column base to form an annular expansion joint. Step 7: Concrete is poured between the outer side of the column base and the annular expansion joint to form the post-cast section of the floor slab column base.

2. The method for constructing a post-cast floor slab at the column base as described in claim 1, characterized in that: In step one, multiple vertical support plates (3) are provided between the two symmetrically arranged arc-shaped ribs (2). The arc-shaped steel template panel (1) and the arc-shaped ribs (2), the arc-shaped steel template panel (1) and the vertical support plates (3), and the arc-shaped ribs (2) and the vertical support plates (3) are all perpendicular to each other.

3. The method for constructing a post-cast floor slab at the column base as described in claim 1, characterized in that: Both ends of the arc-shaped rib (2) are provided with bolt holes for the adjusting bolt (4) to pass through, and the bolt holes are connected to the internal threaded holes on the corresponding first nut (5).

4. A method for constructing a post-cast floor slab at the column base as described in claim 1, characterized in that: The telescopic rod (6) includes an internally threaded sleeve (6-1) and two threaded rods (6-2) that are threaded through both ends of the internally threaded sleeve (6-1); One end of one of the threaded rods (6-2) is fixed to the first nut (5), and one end of the other threaded rod (6-2) is fixed with a U-shaped positioning block (7) for the vertical anchor (8) to pass through.

5. A method for constructing a post-cast floor slab at the column base as described in claim 4, characterized in that: One side of the U-shaped positioning block (7) is provided with a fastening bolt (9) for fastening the vertical anchor (8).

6. A method for constructing a post-cast floor slab at the column base as described in claim 1, characterized in that: The template connection assembly includes a splicing section template (10) connected between two adjacent arc-shaped steel template panels (1) and an arc-shaped connecting rib (11) disposed on the concave arc surface of the splicing section template (10). One end of the arc-shaped connecting rib (11) extends to the space between two arc-shaped ribs (2) in an adjacent arc-shaped template assembly, and the other end of the arc-shaped connecting rib (11) extends to the space between two arc-shaped ribs (2) in another adjacent arc-shaped template assembly.

7. A method for constructing a post-cast floor slab at the column base as described in claim 6, characterized in that: The two ends of the two arc-shaped connecting ribs (11) in the arc-shaped template assembly are respectively provided with a hanging ear (12), and a threaded top rod (13) for pressing the arc-shaped rib plate (2) against the arc-shaped steel template panel (1) is threadedly connected to the hanging ear (12).

8. A method for constructing a post-cast floor slab at the column base as described in claim 7, characterized in that: A second nut (14) that cooperates with a threaded push rod (13) is fixed on the lug (12). The lug (12) has a through hole for the threaded push rod (13) to pass through, and the through hole is connected to the threaded hole of the second nut (14).

9. A method for constructing a post-cast floor slab at the column base as described in claim 1, characterized in that: The locator (15) is a GPS locator.

10. A method for constructing a post-cast floor slab at the column base as described in claim 1, characterized in that: In step three, when adjusting the elevation of multiple arc-shaped template components, when a gap appears between the bottom of the arc-shaped steel template panel (1) and the ground, mortar is used to seal the gap between the bottom of the arc-shaped steel template panel (1) and the ground.

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