A fast construction template device for pouring structural columns and a method of using the same

Abstract

The present invention provides a fast construction template device for pouring a structural column and a method for using the same, wherein the template device comprises a main body prefabricated template, a top prefabricated template, a prefabricated dustpan mouth, a closing plate and a limiting structure, wherein the top prefabricated template can be telescopically installed on the top of the main body prefabricated template, the top of the top prefabricated template is on the lower surface of the roof structure beam, the main body prefabricated template and the top prefabricated template enclose a structural column pouring space, a concrete pouring port is provided on one side of the top prefabricated template, the prefabricated dustpan mouth is installed on the concrete pouring port, the prefabricated dustpan mouth is used to introduce concrete into the structural column pouring space, the closing plate can be telescopically installed at the concrete pouring port, the limiting structure is used to limit the telescopic movement of the closing plate, when the closing plate is in a retracted state, the concrete pouring port is open, and when the closing plate is in an extended state, the closing plate blocks the concrete pouring port. The present invention does not affect the performance of the structural column, and does not need to chisel the concrete at the dustpan mouth in the later stage, saving concrete materials and construction time, and can significantly improve the construction efficiency on the basis of ensuring the construction quality of the structural column.

Description

Technical Field

[0001] The invention belongs to the technical field of structural column casting, and in particular relates to a structural column casting rapid construction template device and a use method thereof. Background Art

[0002] In the field of civil engineering, structural columns can effectively improve the overall rigidity of houses and enhance stability, and are one of the most important structural measures to improve the seismic performance of masonry structures. However, since the construction of structural columns requires independent assembly and disassembly of formwork, it involves cross-operation of different types of work, and the process is complicated, which affects the construction efficiency; on the other hand, before pouring concrete into the structural columns, it is necessary to use the formwork to make a dustpan mouth. After the concrete solidifies, the dustpan mouth formwork needs to be removed, and the excess concrete needs to be chiseled out of the dustpan mouth, resulting in a waste of resources. In addition, the flatness of the wall after chiseling is difficult to control, which seriously affects the construction quality and efficiency. Summary of the invention

[0003] In view of the problems mentioned in the background technology, the present invention proposes a rapid construction template device for pouring structural columns and a use method thereof.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is:

[0005] A fast construction template device for pouring structural columns, which includes a main precast template, a top precast template, a precast dustpan mouth, a closing plate and a limiting structure. The top precast template can be installed on the top of the main precast template in a telescopic manner. The top of the top precast template is against the lower surface of the roof structure beam. The main precast template and the top precast template enclose a structural column pouring space. A concrete pouring port is provided on one side of the top precast template. The precast dustpan mouth is installed on the concrete pouring port. The precast dustpan mouth is used to guide concrete into the structural column pouring space. The closing plate can be installed at the concrete pouring port in a telescopic manner. The limiting structure is used to limit the upward and downward expansion and contraction of the closing plate. When the closing plate is in a retracted state, the concrete pouring port is open. When the closing plate is in an extended state, the closing plate blocks the concrete pouring port.

[0006] To optimize the above technical solutions, the specific measures taken also include:

[0007] The above-mentioned structural column is cast on one side of the block wall, and the block wall is left with a tooth joint on this side. The main prefabricated formwork includes type A prefabricated formwork, type B prefabricated formwork and type C prefabricated formwork. The shape of type A prefabricated formwork is adapted to the shape of the protruding part of the tooth joint, and the shape of type B prefabricated formwork is adapted to the shape of the concave lower part of the tooth joint. Type C prefabricated formwork is a prefabricated formwork provided with a slide groove, and the slide groove is vertically arranged, and the upper end is opened on the upper surface of the C-type prefabricated formwork. Type A prefabricated formwork and type B prefabricated formwork are vertically constructed in sequence according to the shape of the tooth joint against the edge of the tooth joint, and type C prefabricated formwork is installed on the upper part of the uppermost one of the type A prefabricated formwork and the type B prefabricated formwork.

[0008] The concrete pouring port of the above-mentioned top-level precast formwork is an opening that runs through from top to bottom. The top-level precast formwork and the closing plate are both inserted into the slide groove. A first spring is installed at the bottom of the top-level precast formwork, and the upper end of the first spring is connected to the lower end of the top-level precast formwork, and the lower end of the first spring is connected to the bottom of the slide groove. The first spring pushes the upper surface of the top-level precast formwork against the lower surface of the roof structure beam through elastic force. A second spring is installed at the bottom of the closing plate, and the upper end of the second spring is connected to the lower end of the closing plate, and the lower end of the second spring is connected to the bottom of the slide groove. The second spring has the potential energy to push the closing plate up so that the closing plate closes the concrete pouring port.

[0009] The prefabricated dustpan mouth includes prefabricated dustpan mouth fasteners, prefabricated dustpan mouth side panels and prefabricated dustpan mouth baffles. The prefabricated dustpan mouth baffle is tilted on the concrete pouring mouth. There are two prefabricated dustpan mouth side panels, which are fixedly installed on the two sides of the prefabricated dustpan mouth baffle respectively. The prefabricated dustpan mouth side panels are detachably fixedly connected to the top prefabricated template through the prefabricated dustpan mouth fasteners.

[0010] The above-mentioned limiting structure includes a limiting connecting rod, a limiting spring and a ram's horn nut. The limiting connecting rod passes through the prefabricated dustpan mouth baffle and is connected to the closing plate. One end of the limiting spring is connected to the limiting connecting rod, and the other end is connected to the prefabricated dustpan mouth baffle. The ram's horn nut is screwed on the limiting connecting rod, and at the same time, the ram's horn nut is pressed against the lower end surface of the prefabricated dustpan mouth baffle. The ram's horn nut is used to limit the upward movement of the limiting connecting rod.

[0011] The adjacent A-type prefabricated templates, B-type prefabricated templates and C-type prefabricated templates are connected by template connectors.

[0012] The gaps between the above-mentioned template connectors and the A-type prefabricated templates, the B-type prefabricated templates and the C-type prefabricated templates are filled with polyurethane foam glue, and the polyurethane foam glue portion exceeding the outer surface of the corresponding prefabricated template is cut off and removed.

[0013] The above-mentioned A-type prefabricated formwork, B-type prefabricated formwork and C-type prefabricated formwork are provided with grooves on the surfaces of the upper and lower ends, and the ends of the formwork connectors are formed with upward and downward protrusions, which can be inserted into the grooves to position and connect adjacent A-type prefabricated formworks, B-type prefabricated formworks and C-type prefabricated formworks together.

[0014] The above-mentioned main body prefabricated formwork, top layer prefabricated formwork and closing plate are non-dismantling formwork, that is, after the structural column is cast, they are connected to the structural column and will not be dismantled.

[0015] A method for using a structural column casting rapid construction template device, using the structural column casting rapid construction template device, specifically comprising the following steps:

[0016] Step 1: construct the block wall and leave tooth joints;

[0017] Step 2: Test assemble the main prefabricated template, top prefabricated template and closing board, and cut the main prefabricated template, top prefabricated template and closing board that cannot be assembled normally on site to ensure that the size meets the requirements;

[0018] Step 3: Tie the longitudinal reinforcement and stirrups of the structural column at the precast position of the structural column;

[0019] Step 4: Assemble the A-type prefabricated formwork and the B-type prefabricated formwork layer by layer from bottom to top around the longitudinal reinforcement, and connect adjacent formworks through formwork connectors;

[0020] Step 5: Use polyurethane foam glue to fill the gap between the template connector and the template, and cut and remove the polyurethane foam glue that exceeds the outer surface of the corresponding prefabricated template;

[0021] Step 6: After the A-type prefabricated formwork and the B-type prefabricated formwork are assembled to a predetermined height, the C-type prefabricated formwork is assembled, and then the top prefabricated formwork and the closing plate are installed on the C-type prefabricated formwork, the lower end of the top prefabricated formwork and the first spring are located in the slide groove, the closing plate and the second spring are located in the slide groove at the concrete pouring port, and the upper end of the top prefabricated formwork is pressed against the lower surface of the roof structure beam by the elastic force of the first spring;

[0022] Step 7: Install the prefabricated dustpan opening on the concrete pouring opening, fix the prefabricated dustpan opening to the top prefabricated template through the prefabricated dustpan opening fastener, install the limiting structure, and move the limiting connecting rod downward by adjusting the clevis nut to move the closing plate downward to keep the concrete pouring opening open;

[0023] Step 8: Pour concrete from the concrete pouring port to the pouring space of the structural column according to the design requirements, and vibrate in time to ensure the pouring quality of the concrete;

[0024] Step 9: After the vibration is completed, the limiting connecting rod is gradually loosened through the clevis nut to move the closing plate upward to close the concrete pouring port, and the upper end of the closing plate is in close contact with the lower surface of the roof structure beam;

[0025] Step 10: Remove the prefabricated dustpan mouth and complete the casting of the structural column.

[0026] The present invention has the following advantages:

[0027] The present invention adopts a prefabricated formwork component that does not need to be disassembled to replace the traditional formwork as support in the longitudinal direction of the structural column, which greatly facilitates construction and transportation. At the same time, a prefabricated dustpan mouth and a telescopic formwork component combination are used at the top position of the structural column. When the concrete has not yet solidified, the concrete pouring mouth is closed with a closing plate, and the dustpan mouth is removed. At a later stage, the concrete at the dustpan mouth does not need to be chiseled without affecting the performance of the structural column, thereby saving concrete materials and construction time. The above series of components are easy to construct and transport, and can significantly improve the construction efficiency on the basis of ensuring the construction quality of the structural column. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the exterior elevation drawing of the structural column.

[0029] Figure 2 This is the side elevation view of the prefabricated dustpan opening at the top of the structural column.

[0030] Figure 3 This is a schematic diagram of the longitudinal connection of the structural column formwork.

[0031] Figure 4 This is the DD cross-section diagram.

[0032] Names marked in the figure: main precast formwork 1, type A precast formwork 11, type B precast formwork 12, type C precast formwork 13, slide 13a, formwork connector 14, polyurethane foam glue 15, top precast formwork 2, concrete pouring port 21, first spring 22, precast dustpan port 3, precast dustpan port fastener 31, precast dustpan port side panel 32, precast dustpan port baffle 33, closing plate 4, second spring 41, limiting structure 5, limiting connecting rod 51, limiting spring 52, ram's horn nut 53, roof structure beam 6, block wall 7, longitudinal steel bar 8, stirrup 9. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0034] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0035] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0036] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the" and the like involved in this application do not indicate a quantitative limitation, and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or units (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" / "several" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships, for example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0037] Reference Figure 1-Figure 4 As shown, the structure of the structural column casting rapid construction template device of the present invention is as follows:

[0038] (1) The components of the rapid construction formwork device are composed of at least 4 types of prefabricated formwork and prefabricated dustpan openings.

[0039] (2) The A-type prefabricated template 11 is set at the protruding position of the tooth joint, and its size should be 360 ​​mm (length) × 180 mm (height) × 30 mm (thickness);

[0040] (3) The B-type prefabricated template 12 is set at the recessed position of the tooth joint, and its size should be 240 mm (length) × 180 mm (height) × 30 mm (thickness);

[0041] (4) Both the A-type prefabricated formwork 11 and the B-type prefabricated formwork 12 are provided with two rectangular grooves at the top and bottom, preferably with dimensions of 30 mm (length) × 10 mm (width) × 10 mm (depth);

[0042] (5) The A-type prefabricated formwork 11 and the B-type prefabricated formwork 12 are fixed above and below and between each other using H-shaped or U-shaped formwork connectors 14;

[0043] (6) The template connector 14 should be made of aluminum alloy;

[0044] (7) The C-type prefabricated formwork 13 is set close to the structural beam. Its width should be consistent with the reserved position of the structure. Its thickness should be 30 mm and its height should be 220 mm.

[0045] (8) The length of the slide groove 13a of the C-shaped prefabricated formwork 13 should be consistent with that of the C-shaped prefabricated formwork 13, the width should be 20 mm, and the depth should be 200 mm;

[0046] (9) A compression spring is provided in the slide groove 13a of the C-shaped prefabricated template 13. The number of compression springs is preferably 4, with 3 first springs 22 and 1 second spring 41;

[0047] (10) The C-shaped prefabricated formwork 13 is fixed to the lower prefabricated formwork via formwork connectors;

[0048] (11) The top prefabricated formwork 2 is arranged in the slide groove 13a of the C-shaped prefabricated formwork 13;

[0049] (12) The width of the top prefabricated formwork 2 should be consistent with that of the C-type prefabricated formwork 13, the thickness should be 18 mm, and the height should be 180 mm;

[0050] (13) The prefabricated dustpan opening 3 is composed of a prefabricated dustpan opening fastener 31, a prefabricated dustpan opening side plate 32, and a prefabricated dustpan opening baffle 33;

[0051] (14) The prefabricated dustpan opening 3 is connected to the top prefabricated template 2 via the prefabricated dustpan opening fastener 31;

[0052] (15) The limit connecting rod 51 is provided with a thread throughout its length, and the height of the top prefabricated template 2 is controlled by the clevis nut 53 and the limit spring 52;

[0053] (16) There should be two groups of limiting structures 5, which are symmetrically arranged on both sides of the bottom of the prefabricated dustpan baffle.

[0054] The method for using the structural column casting rapid construction template device of the present invention specifically comprises the following steps:

[0055] Step 1: construct the block wall 7 according to the design drawing requirements, leaving tooth joints;

[0056] Step 2: Test assemble the main prefabricated template 1, the top prefabricated template 2 and the closing plate 4, and cut the main prefabricated template 1, the top prefabricated template 2 and the closing plate 4 that cannot be assembled normally on site to ensure that the size meets the requirements;

[0057] Step 3: Tie the longitudinal reinforcement 8 and stirrups 9 of the structural column at the precast position of the structural column;

[0058] Step 4: Assemble the A-type prefabricated formwork 11 and the B-type prefabricated formwork 12 layer by layer from bottom to top around the longitudinal reinforcement 8, and connect the adjacent formworks through formwork connectors 14; wherein, the bottom two side formworks are fixed with U-shaped formwork connectors, and the rest of the upper and lower formworks and the two side formworks are fixed with H-shaped formwork connectors;

[0059] Step 5: fill the gap between the template connector 14 and the template with polyurethane foam glue 15, and cut and remove the polyurethane foam glue part that exceeds the outer surface of the corresponding prefabricated template;

[0060] Step 6: After the A-type precast formwork 11 and the B-type precast formwork 12 are assembled to a predetermined height, the C-type precast formwork 13 is assembled, and then the top precast formwork 2 and the closing plate 4 are installed on the C-type precast formwork 13. The lower end of the top precast formwork 2 and the first spring 22 are located in the chute 13a, and the closing plate 4 and the second spring 41 are located in the chute 13a at the concrete pouring port 21. The upper end of the top precast formwork 2 is pressed against the lower surface of the roof structure beam 6 by the elastic force of the first spring 22.

[0061] Step 7: Install the prefabricated dustpan opening 3 on the concrete pouring opening 21, fix the prefabricated dustpan opening 3 to the top prefabricated template 2 through the prefabricated dustpan opening fastener 31, install the limiting structure 5, and move the limiting connecting rod 51 downward by adjusting the clevis nut 53 to move the closing plate 4 downward to keep the concrete pouring opening 21 open;

[0062] Step 8: pour concrete from the concrete pouring port 21 into the pouring space of the structural column according to the design requirements, and vibrate in time to ensure the pouring quality of the concrete;

[0063] Step 9: After the vibration is completed, the limiting link 51 is gradually loosened through the clevis nut 53 to move the closing plate 4 upward to close the concrete pouring port 21, and the upper end of the closing plate 4 is in close contact with the lower surface of the roof structure beam 6;

[0064] Step 10. Remove the prefabricated dustpan mouth 3, clean the wall, and proceed directly to the next step of wall (painting) work according to the project progress requirements.

[0065] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0066] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A fast construction template device for pouring structural columns, characterized by: The invention comprises a main body prefabricated template (1), a top prefabricated template (2), a prefabricated dustpan opening (3), a closing plate (4) and a limiting structure (5); the top prefabricated template (2) can be installed on the top of the main body prefabricated template in a telescopic manner; the top of the top prefabricated template (2) is pressed against the lower surface of the roof structure beam (6); the main body prefabricated template (1) and the top prefabricated template (2) enclose a structural column casting space; a side surface of the top prefabricated template (2) is provided with a concrete casting opening (21) The prefabricated dustpan opening (3) is installed on the concrete pouring opening (21), and the prefabricated dustpan opening (3) is used to guide concrete into the pouring space of the structural column. The closing plate (4) is installed at the concrete pouring opening (21) in a telescopic manner. The limiting structure (5) is used to limit the telescopic movement of the closing plate (4). When the closing plate (4) is in a retracted state, the concrete pouring opening (21) is open. When the closing plate (4) is in an extended state, the closing plate (4) blocks the concrete pouring opening (21). The structural column is cast on one side of the block wall (7), and the block wall (7) has a tooth joint on the side. The main body prefabricated formwork (1) includes an A-type prefabricated formwork (11), a B-type prefabricated formwork (12) and a C-type prefabricated formwork (13). The shape of the A-type prefabricated formwork (11) is adapted to the shape of the protruding part of the tooth joint, the shape of the B-type prefabricated formwork (12) is adapted to the shape of the concave part of the tooth joint, and the shape of the C-type prefabricated formwork (13) is adapted to the shape of the concave part of the tooth joint. The prefabricated template (13) is a prefabricated template provided with a slide groove (13a), the slide groove (13a) is vertically arranged, and the upper end is opened on the upper surface of the C-type prefabricated template (13), the A-type prefabricated template (11) and the B-type prefabricated template (12) are vertically constructed in sequence on the edge of the tooth joint according to the shape of the tooth joint, and the C-type prefabricated template (13) is installed on the upper part of the uppermost one of the A-type prefabricated template (11) and the B-type prefabricated template (12); The concrete pouring port (21) of the top precast template (2) is an opening that passes through from top to bottom. The top precast template (2) and the closing plate (4) are both inserted into the slide groove (13a). A first spring (22) is installed at the bottom of the top precast template (2). The upper end of the first spring (22) is connected to the lower end of the top precast template (2), and the lower end of the first spring (22) is connected to the bottom of the slide groove (13a). The first spring (22) pushes the upper surface of the top precast template (2) against the lower surface of the roof structure beam (6) through elastic force. A second spring (41) is installed at the bottom of the closing plate (4). The upper end of the second spring (41) is connected to the lower end of the closing plate (4), and the lower end of the second spring (41) is connected to the bottom of the slide groove (13a). The second spring (41) has the potential energy to push the closing plate (4) upward so that the closing plate (4) closes the concrete pouring port (21). The prefabricated dustpan mouth (3) comprises a prefabricated dustpan mouth fastener (31), a prefabricated dustpan mouth side plate (32) and a prefabricated dustpan mouth baffle (33); the prefabricated dustpan mouth baffle (33) is tiltedly arranged on the concrete pouring mouth (21); there are two prefabricated dustpan mouth side plates (32), which are respectively fixedly installed on two side surfaces of the prefabricated dustpan mouth baffle (33); the prefabricated dustpan mouth side plates (32) are detachably fixedly connected to the top prefabricated template (2) through the prefabricated dustpan mouth fastener (31); The limiting structure (5) comprises a limiting connecting rod (51), a limiting spring (52) and a ram's horn nut (53); the limiting connecting rod (51) passes through the prefabricated dustpan mouth baffle (33) and is connected to the closing plate (4); one end of the limiting spring (52) is connected to the limiting connecting rod (51) and the other end is connected to the prefabricated dustpan mouth baffle (33); the ram's horn nut (53) is screwed onto the limiting connecting rod (51), and at the same time, the ram's horn nut (53) is pressed against the lower end surface of the prefabricated dustpan mouth baffle (33); the ram's horn nut (53) is used to limit the upward movement of the limiting connecting rod (51).

2. A structural column casting rapid construction template device according to claim 1, characterized in that: Adjacent A-type prefabricated templates (11), B-type prefabricated templates (12) and C-type prefabricated templates (13) are connected via template connectors (14).

3. A structural column casting rapid construction template device according to claim 2, characterized in that: The gaps between the template connector (14) and the A-type prefabricated template (11), the B-type prefabricated template (12) and the C-type prefabricated template (13) are filled with polyurethane foam glue (15), and the polyurethane foam glue portion that exceeds the outer surface of the corresponding prefabricated template is cut and removed.

4. A structural column casting rapid construction template device according to claim 3, characterized in that: The surfaces of the upper and lower ends of the A-type prefabricated formwork (11), the B-type prefabricated formwork (12) and the C-type prefabricated formwork (13) are all provided with grooves, and the ends of the formwork connector (14) are formed with upward and downward protrusions, and the protrusions can be inserted into the grooves to position and connect the adjacent A-type prefabricated formwork (11), B-type prefabricated formwork (12) and C-type prefabricated formwork (13) together.

5. A structural column casting rapid construction template device according to claim 4, characterized in that: The main body prefabricated formwork (1), the top prefabricated formwork (2) and the closing plate (4) are non-dismantling formworks, that is, they are connected to the structural column as a whole after the structural column is cast and do not need to be dismantled.

6. A method for using a rapid construction template device for pouring a structural column, characterized by: The application of the structural column casting rapid construction template device as claimed in claim 5 specifically includes the following steps: Step 1, constructing a block wall (7) and leaving tooth joints; Step 2: Trial assemble the main prefabricated template (1), the top prefabricated template (2) and the closing plate (4), and perform on-site cutting of the main prefabricated template (1), the top prefabricated template (2) and the closing plate (4) that cannot be assembled normally to ensure that the size meets the requirements; Step 3: tying the longitudinal reinforcement (8) and stirrups (9) of the structural column at the precast position of the structural column; Step 4: Assemble the A-type prefabricated formwork (11) and the B-type prefabricated formwork (12) layer by layer from bottom to top around the longitudinal reinforcement (8), and connect adjacent formworks via formwork connectors (14); Step 5: Fill the gap between the template connector (14) and the template with polyurethane foam glue (15), and cut and remove the polyurethane foam glue portion that exceeds the outer surface of the corresponding prefabricated template; Step 6: After the A-type prefabricated formwork (11) and the B-type prefabricated formwork (12) are assembled to a predetermined height, the C-type prefabricated formwork (13) is assembled, and then the top prefabricated formwork (2) and the closing plate (4) are installed on the C-type prefabricated formwork (13), the lower end of the top prefabricated formwork (2) and the first spring (22) are located in the slide groove (13a), the closing plate (4) and the second spring (41) are located in the slide groove (13a) at the concrete pouring port (21), and the upper end of the top prefabricated formwork (2) is pressed against the lower surface of the roof structure beam (6) by the elastic force of the first spring (22); Step 7: Install the prefabricated dustpan opening (3) on the concrete pouring opening (21), fix the prefabricated dustpan opening (3) to the top prefabricated template (2) through the prefabricated dustpan opening fastener (31), install the limiting structure (5), and move the limiting connecting rod (51) downward by adjusting the clevis nut (53) to move the closing plate (4) downward to keep the concrete pouring opening (21) open; Step 8: pour concrete from the concrete pouring port (21) into the pouring space of the structural column according to the design requirements, and vibrate in time to ensure the pouring quality of the concrete; Step 9: After the vibration is completed, the limiting connecting rod (51) is gradually loosened through the clevis nut (53), so that the closing plate (4) moves upward to close the concrete pouring port (21), and the upper end of the closing plate (4) is in close contact with the lower surface of the roof structure beam (6); Step 10: Remove the prefabricated dustpan opening (3) and complete the casting of the structural column.

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