A formwork system and construction method for plugging and pouring temporary construction openings

Abstract

The present application provides a formwork system and a construction method for plugging and pouring temporary construction openings, which relates to the technical field of opening plugging construction. A formwork system for plugging and pouring temporary construction openings includes embedded screw rods, a steel bottom formwork, connecting nuts, and sealing plates. The embedded screw rods are used for being embedded in the floor slab. The embedded screw rods pass through the steel bottom formwork, and the steel bottom formwork abuts against the bottom side of the floor slab. The steel bottom formwork is used for plugging the reserved opening of the floor slab. The connecting nuts are threadedly connected with the embedded screw rods, and the connecting nuts abut tightly against the steel bottom formwork. The sealing plates are connected with the steel bottom formwork. There are multiple sealing plates, and the sealing plates abut against the inner wall of the reserved opening. The present application can facilitate the plugging construction of the reserved opening and reduce the occurrence of slurry leakage when pouring concrete into the reserved opening.

Description

Technical Field

[0001] The present application relates to the technical field of opening plugging construction, and in particular to a formwork system and construction method for plugging and pouring temporary construction openings. Background Art

[0002] During the building construction process, it is often necessary to reserve openings in the floor slabs of some areas on each floor for lead wire positioning, material transfer, and placing tower cranes. As temporary construction openings, these reserved openings need to be separately plugged after the structural construction stage. However, at this time, the original formwork system during the overall structure construction has already been removed, and it is necessary to re-erect the formwork bent to assist in pouring the concrete for the reserved openings.

[0003] The current general traditional method is to re-erect a steel pipe support formwork bent system at the reserved opening. At this time, the general building project has entered the decoration stage, so such a formwork system has disadvantages such as complex erection and installation steps, large occupied space, and obstruction of other construction processes. Moreover, the formwork system in the related art has poor sealing performance after plugging the reserved opening, and it is easy to have slurry leakage when pouring concrete into the reserved opening. Therefore, the formwork system in the related art needs to be improved. Summary of the Invention

[0004] In order to facilitate the plugging construction of the reserved opening and reduce the occurrence of slurry leakage when pouring concrete into the reserved opening, the present application provides a formwork system and construction method for plugging and pouring temporary construction openings.

[0005] In a first aspect, the present application provides a formwork system for plugging and pouring temporary construction openings, adopting the following technical solution:

[0006] A formwork system for plugging and pouring temporary construction openings, comprising:

[0007] Embedded screw rods, which are used for being embedded in the floor slab;

[0008] Steel bottom formwork, the embedded screw rods pass through the steel bottom formwork, the steel bottom formwork abuts against the bottom side of the floor slab, and the steel bottom formwork is used for plugging the reserved opening of the floor slab;

[0009] Connecting nuts, which are threadedly connected with the embedded screw rods, and the connecting nuts abut tightly against the steel bottom formwork;

[0010] Sealing plates, which are connected with the steel bottom formwork, there are multiple sealing plates, and the sealing plates abut against the inner wall of the reserved opening.

[0011] By adopting the above technical solution, the cooperation between the embedded screw and the connection nut can firmly fix the steel bottom form on the bottom side of the floor slab, thereby providing a stable support structure for plugging the reserved hole. Multiple sealing plates are in contact with the inner wall of the reserved hole, thereby extending the penetration path, effectively improving the sealing performance between the inner wall of the reserved hole and the steel bottom form, and reducing the occurrence of slurry leakage during concrete pouring.

[0012] Optionally, a tensioning assembly is provided on the steel bottom form, and the sealing plate is slidably connected to the steel bottom form; the tensioning assembly is used to tension the sealing plate so that the sealing plate abuts against the inner wall of the reserved hole.

[0013] By adopting the above technical solution, the sealing plate slides on the steel bottom form, which can adapt to reserved holes of different sizes and improve the applicability of the formwork system. The tensioning assembly makes the sealing plate abut against the inner wall of the reserved hole, improving the sealing performance between the sealing plate and the inner wall of the reserved hole and reducing the occurrence of slurry leakage.

[0014] Optionally, the sealing plate includes a support plate, a sliding block and a top-side sealing strip; the sliding block is connected to the support plate, the steel bottom form is provided with a sliding groove, and the sliding block is slidably connected to the sliding groove; the top-side sealing strip is connected to the support plate, the top-side sealing strip abuts against the top side of the steel bottom form, and the top-side sealing strip seals the sliding groove.

[0015] By adopting the above technical solution, the support plate is connected to the sliding block, and the sliding block is slidably connected to the sliding groove, enabling the sealing plate to slide relative to the steel bottom form, thereby adapting to reserved holes of different sizes and improving the applicability of the formwork system. The top-side sealing plate seals the sliding groove, reducing the situation of slurry entering the sliding groove during concrete pouring and improving the sealing performance of the formwork system.

[0016] Optionally, the tensioning assembly includes a tensioning screw and a tensioning nut, the tensioning screw is connected to the sliding block, and the tensioning screw passes through the steel bottom form; the tensioning nut is threadedly connected to the tensioning screw, and the tensioning nut abuts against the side wall of the steel bottom form.

[0017] By adopting the above technical solution, the tensioning screw is connected to the sliding block. By rotating the tensioning nut, the tensioning screw generates a pulling force, thereby driving the sliding block to move, and finally achieving the close fit of the sealing plate to the inner wall of the reserved hole. This design is not only simple to operate but also can adapt to reserved holes of different sizes, improving the applicability and construction efficiency of the formwork system.

[0018] Optionally, the sealing plate further includes a sealing cushion plate, the sealing cushion plate is connected to the support plate, the sealing cushion plate abuts against the top side of the steel bottom form, and the sealing cushion plate is used to abut against the inner wall of the reserved hole.

[0019] By adopting the above technical solution, the sealing cushion plate is connected to the support plate and abuts against the inner wall of the reserved hole. The sealing cushion plate can deform to a certain extent, so as to better fit the inner wall of the reserved hole, enhance the sealing performance between the sealing plate and the inner wall of the reserved hole, and further reduce the occurrence of slurry leakage. And the sealing cushion plate abuts against the top side of the steel bottom formwork, which can reduce the penetration of slurry between the sealing cushion plate and the top side of the steel bottom formwork during concrete pouring.

[0020] Optionally, a corner sealing mechanism is provided on the steel bottom formwork. The corner sealing mechanism includes a corner plate and a locking assembly; the corner plate is slidably connected to the steel bottom formwork, the corner plate is located inside the corner of two adjacent sealing plates, and the corner plate is used to abut against two adjacent sealing plates; a glue injection groove is formed between the corner plate and the inner wall of the reserved hole, and a sealing block is formed by injecting glue into the glue injection groove; the locking assembly is used to lock the position of the corner plate.

[0021] By adopting the above technical solution, the corner plate abuts against two adjacent sealing plates, so that a glue injection groove is formed between the corner plate and the inner wall of the reserved hole. By injecting sealant into the glue injection groove, the slurry leakage at the corner of the reserved hole can be reduced, and the sealing performance of the overall formwork system can be improved. And the volume of the glue injection groove is not large, and the sealant can solidify quickly after being injected, so as to reduce the impact on the construction efficiency. The use of the locking assembly ensures the fixed position of the corner plate and reduces the displacement during pouring, thus further ensuring the reliability of the sealing effect.

[0022] Optionally, the corner plate includes a corner abutting plate, a corner sealing strip and a corner sliding block; the corner sliding block is connected to the corner abutting plate, a moving groove is formed in the steel bottom formwork, the corner sliding block is slidably connected to the moving groove, and the corner abutting plate abuts against two adjacent sealing plates; the corner sealing strip is connected to the corner abutting plate, the corner sealing strip abuts against the top side of the steel bottom formwork, and the corner sealing strip seals the moving groove.

[0023] By adopting the above technical solution, the corner sliding block slides in the moving groove, so that the corner plate can slide relative to the steel bottom formwork, and the corner plate can adapt to the positions of two adjacent sealing plates. The corner sealing strip seals the moving groove, which can reduce the entry of slurry and sealant into the moving groove.

[0024] Optionally, the locking assembly includes a corner tensioning screw and a corner tensioning nut. The corner tensioning screw is connected to the corner sliding block, the corner tensioning screw penetrates through the steel bottom formwork, and the corner tensioning screw slides along the moving groove; the corner tensioning nut is threadedly connected to the corner tensioning screw, and the corner tensioning nut abuts against the steel bottom formwork.

[0025] By adopting the above technical solution, the corner tensioning screw is connected to the corner sliding block, and the corner tensioning screw passes through the steel bottom formwork and is threadedly connected to the corner tensioning nut. The position of the corner abutting plate can be fixed by adjusting the corner tensioning nut, so that the corner abutting plate abuts against two adjacent sealing plates respectively, which is beneficial to form a glue injection groove and facilitate sealing the corner of the reserved hole.

[0026] Optionally, a chamfer is provided at the corner of the steel bottom formwork, and the corner tensioning nut abuts against the chamfer.

[0027] By adopting the above technical solution, the chamfer can provide support for the corner tensioning nut, thus facilitating the locking assembly to lock the position of the corner plate.

[0028] In a second aspect, the present application also provides a construction method for a formwork system for plugging and pouring temporary construction holes, using the above formwork system for plugging and pouring temporary construction holes, including the following steps:

[0029] S1: First, the steel bars in the floor slab are woven into a steel bar mesh in the reserved hole by means of implanting steel bars or splicing.

[0030] S2: The steel bottom formwork is used to plug the reserved hole, so that the embedded screw passes through the steel bottom formwork, and the connecting nut is tightened to make the steel bottom formwork closely adhere to the bottom side of the floor slab.

[0031] S3: Turn the tensioning nut so that the tensioning nut abuts against the side wall of the steel bottom formwork. The tensioning nut drives the sliding block to slide through the tensioning screw, so that the sealing plate abuts against the inner wall of the reserved hole.

[0032] S4: Turn the corner tensioning nut so that the corner tensioning nut abuts against the chamfer of the steel bottom formwork. The corner tensioning nut drives the corner sliding block to slide through the corner tensioning screw, so that the corner plate abuts against two adjacent sealing plates respectively.

[0033] S5: Apply a release agent to the top side of the steel bottom formwork, the inner side of the sealing plate, and the inner and outer sides of the corner plate.

[0034] S6: Inject sealant between the corner plate and the inner wall of the reserved hole, and wait for the sealant to solidify to form a sealing block.

[0035] S7: Pour concrete into the reserved hole, and then complete the curing work.

[0036] In summary, the present application has at least one of the following beneficial effects:

[0037] 1. The embedded screw passes through the steel bottom formwork and is fastened using connecting nuts, enabling the steel bottom formwork to be quickly installed and firmly fixed to the bottom side of the floor slab. Moreover, it can seal the reserved opening, thereby simplifying the construction process, reducing construction time, and simultaneously minimizing spatial obstruction to other processes.

[0038] 2. The sealing plate can slide relative to the steel bottom formwork. The tensioning assembly ensures that the sealing plate closely adheres to the inner wall of the reserved opening, capable of adapting to reserved openings of different sizes, effectively enhancing the overall sealing performance, and reducing the possibility of slurry leakage between the inner wall of the reserved opening and the steel bottom formwork during concrete pouring.

[0039] 3. The corner abutting plate abuts against the adjacent sealing plate, forming a sealant injection groove at the corner. By injecting sealant into the sealant injection groove, the sealing performance at the corner of the reserved opening can be further enhanced, reducing the risk of slurry leakage at the corner of the reserved opening and ensuring the pouring quality. Description of the Drawings

[0040] Figure 1 is the overall structural schematic diagram of the formwork system of Embodiment 1 of the present application;

[0041] Figure 2 is the sectional structural schematic diagram of the formwork system of Embodiment 1 of the present application for sealing the reserved opening;

[0042] Figure 3 is the bottom view structural schematic diagram of the formwork system of Embodiment 1 of the present application for sealing the reserved opening;

[0043] Figure 4 is the overall structural schematic diagram of the formwork system of Embodiment 2 of the present application;

[0044] Figure 5 is the sectional structural schematic diagram of the formwork system of Embodiment 2 of the present application for sealing the reserved opening;

[0045] Figure 6 is the overall structural schematic diagram of the formwork system of Embodiment 3 of the present application;

[0046] Figure 7 is the partial sectional structural schematic diagram of the tensioning assembly, sealing plate, and steel bottom formwork of Embodiment 3 of the present application;

[0047] Figure 8 is the overall structural schematic diagram of the formwork system of Embodiment 4 of the present application;

[0048] Figure 9 is the partial sectional structural schematic diagram of the corner sealing mechanism and steel bottom formwork of Embodiment 4 of the present application.

[0049] Description of reference numerals: 1, steel bottom formwork; 11, sliding groove; 12, moving groove; 13, chamfer; 2, embedded screw; 3, connecting nut; 4, sealing plate; 41, support plate; 42, sealing gasket; 43, top side sealing strip; 44, sliding block; 5, tensioning assembly; 51, tensioning screw; 52, tensioning nut; 6, corner sealing mechanism; 61, corner plate; 611, corner abutting plate; 612, corner sealing strip; 613, corner sliding block; 62, locking assembly; 621, corner tensioning screw; 622, corner tensioning nut; 100, floor slab; 101, reserved hole. Detailed implementation manners

[0050] The following Figures 1 to 9 further elaborates on this application.

[0051] Example 1:

[0052] Embodiment 1 of this application provides a formwork system for plugging and pouring temporary construction openings.

[0053] Referring to Figure 1 and Figure 2 , the formwork system for plugging and pouring temporary construction openings includes a steel bottom formwork 1, an embedded screw 2, and a connecting nut 3. One end of the embedded screw 2 is pre-embedded in the floor slab 100, and the other end of the embedded screw 2 extends from the bottom side of the floor slab 100. There are multiple embedded screws 2, and the multiple embedded screws 2 are arranged around the circumference of the reserved hole 101. The steel bottom formwork 1 is a rectangular plate, and the steel bottom formwork 1 is provided with multiple holes, and the multiple holes of the steel bottom formwork 1 correspond to the multiple embedded screws 2 one by one.

[0054] Referring to Figure 2 and Figure 3 , insert the embedded screw 2 into the hole of the steel bottom formwork 1, and then make the steel bottom formwork 1 abut against the bottom side of the floor slab 100. Subsequently, thread the connecting nut 3 onto the embedded screw 2 and tighten the connecting nut 3 so that the connecting nut 3 abuts tightly against the steel bottom formwork 1, thereby making the steel bottom formwork 1 abut tightly against the bottom side of the floor slab 100 and making the steel bottom formwork 1 plug the reserved hole 101.

[0055] The implementation principle of the formwork system for plugging and pouring temporary construction openings in Embodiment 1 of this application is as follows: The embedded screw 2 is pre-embedded in the floor slab 100 on the circumference of the reserved hole 101. When it is necessary to plug the reserved hole 101, first form a steel bar mesh in the reserved hole 101 by implanting or extending the steel bars in the floor slab 100 around the reserved hole 101. Subsequently, insert the steel bottom formwork 1 into the embedded screw 2 and tighten the connecting nut 3 so that the steel bottom formwork 1 abuts against the bottom side of the floor slab 100 and the steel bottom formwork 1 plugs the reserved hole 101.

[0056] Example 2:

[0057] Embodiment 2 of the present application provides a formwork system for plugging and pouring temporary construction openings. The difference between Embodiment 2 and Embodiment 1 of the present application lies in:

[0058] Refer to Figure 4 and Figure 5 , the sealing plate 4 is fixedly connected to the top side of the steel bottom formwork 1. The sealing plate 4 is located within the reserved opening 101. There are four sealing plates 4, and adjacent sealing plates 4 are fixedly connected to each other. The four sealing plates 4 are respectively in contact with the four inner walls of the reserved opening 101, extending the penetration path and improving the sealing performance between the sealing plate 4 and the inner wall of the reserved opening 101, thereby reducing the occurrence of slurry leakage between the steel bottom formwork 1 and the floor slab 100 during concrete pouring.

[0059] Embodiment 3:

[0060] Embodiment 3 of the present application provides a formwork system for plugging and pouring temporary construction openings. The difference between Embodiment 3 and Embodiment 2 of the present application lies in:

[0061] Refer to Figure 6 and Figure 7 , the sealing plate 4 includes a support plate 41, a sealing pad 42, a top-side plugging strip 43, and a sliding block 44. The steel bottom formwork 1 is provided with a sliding groove 11. The sliding block 44 is slidably connected to the sliding groove 11. The sliding block 44 can slide along the sliding groove 11. The sliding block 44 is located within the sliding groove 11 and is fixedly connected to the support plate 41, so that the sealing plate 4 can slide relative to the steel bottom formwork 1, and the sliding direction of the sealing plate 4 is the direction of approaching or departing from the inner wall of the reserved opening 101, thus being able to adapt to reserved openings 101 of different sizes.

[0062] Refer to Figure 6 and Figure 7 , the top-side plugging strip 43 is fixedly connected to the support plate 41. The top-side plugging strip 43 is in contact with the top side of the steel bottom formwork 1. The top-side plugging strip 43 plugs the top side of the sliding groove 11, which can reduce the situation of slurry entering the sliding groove 11 during concrete pouring.

[0063] Refer to Figure 6 and Figure 7 , the sealing pad 42 is fixedly connected to the support plate 41. The sealing pad 42 is in contact with the top side of the steel bottom formwork 1. The sealing pad 42 is located on the side of the support plate 41 close to the inner wall of the reserved opening 101. When the sealing plate 4 approaches the inner wall of the reserved opening 101, the sealing pad 42 can be in contact with the inner wall of the reserved opening 101. The sealing pad 42 has a certain elasticity, enabling the sealing pad 42 to better fit the inner wall of the reserved opening 101, thereby enhancing the sealing performance between the sealing plate 4 and the inner wall of the reserved opening 101.

[0064] Refer to Figure 6 and Figure 7, the tensioning assembly 5 includes a tensioning screw 51 and a tensioning nut 52. The tensioning screw 51 passes through the steel bottom formwork 1, and the tensioning screw 51 can slide relative to the steel bottom formwork 1. One end of the tensioning screw 51 is fixedly connected to the sliding block 44, and the other end of the tensioning screw 51 passes through the side wall of the steel bottom formwork 1. The tensioning nut 52 is threadedly connected to the tensioning screw 51. By tightening the tensioning nut 52, the tensioning nut 52 abuts against the side wall of the steel bottom formwork 1, so as to pull the support plate 41 to move towards the inner wall of the reserved hole 101 through the sliding block 44, making the sealing gasket 42 fit more closely with the inner wall of the reserved hole 101 and further improving the sealing performance.

[0065] Reference Figure 6 and Figure 7 , in this embodiment, a plurality of tensioning assemblies 5 are provided. Two tensioning assemblies 5 correspond to one sealing plate 4, so that the four sealing plates 4 can be closely attached to the four inner walls of the reserved hole 101 respectively. On the one hand, it can adapt to reserved holes 101 of different sizes, and on the other hand, it improves the sealing performance between the sealing plate 4 and the inner wall of the reserved hole 101, reducing the occurrence of mortar leakage between the steel bottom formwork 1 and the floor slab 100.

[0066] Embodiment 4:

[0067] The fourth embodiment of the present application provides a formwork system for plugging and pouring temporary construction holes. The difference between the fourth embodiment of the present application and the third embodiment lies in:

[0068] Reference Figure 8 and Figure 9 , a corner sealing mechanism 6 is provided on the steel bottom formwork 1. Four corner sealing mechanisms 6 are provided, and the four corner sealing mechanisms 6 respectively correspond to the four corners of the reserved hole 101 one by one.

[0069] Reference Figure 8 and Figure 9 , the corner sealing mechanism 6 includes a corner plate 61 and a locking assembly 62. The corner plate 61 includes a corner abutting plate 611, a corner sealing strip 612 and a corner sliding block 613. The locking assembly 62 includes a corner tensioning screw 621 and a corner tensioning nut 622. The steel bottom formwork 1 is provided with a moving groove 12, and one moving groove 12 is parallel to one of the diagonals of the steel bottom formwork 1. The corner sliding block 613 is located in the moving groove 12, and the corner sliding block 613 is slidably connected to the moving groove 12. The corner abutting plate 611 is fixedly connected to the corner sliding block 613, so that the corner plate 61 can slide relative to the steel bottom formwork 1. The corner tensioning screw 621 passes through the steel bottom formwork 1, and the corner tensioning screw 621 can slide relative to the steel bottom formwork 1. One end of the corner tensioning screw 621 is fixedly connected to the corner sliding block 613, and the other end of the corner tensioning screw 621 passes through the steel bottom formwork 1.

[0070] Reference Figure 8 and Figure 9, chamfers 13 are provided at the four corners of the steel bottom formwork 1. The corner tightening nut 622 is threadedly connected to the corner tightening screw 621, and the corner tightening nut 622 abuts against the chamfer 13. One corner abutting plate 611 corresponds to two corner sealing strips 612 respectively. The two corner sealing strips 612 are fixedly connected to both sides of the corner abutting plate 611 respectively. The corner sealing strip 612 abuts against the top side of the steel bottom formwork 1, and the corner sealing strip 612 seals the top side of the moving groove 12.

[0071] Reference Figure 8 and Figure 9 , turn the corner tightening nut 622, so that the corner tightening screw 621 slides along the moving groove 12, so that the corner abutting plate 611 moves and abuts against two adjacent sealing plates 4 respectively. Then tighten the corner tightening nut 622, so that the corner tightening nut 622 abuts tightly against the chamfer 13 of the steel bottom formwork 1, thereby locking the position of the corner plate 61.

[0072] Reference Figure 8 and Figure 9 , after the corner abutting plate 611 abuts against two adjacent sealing plates 4 respectively, a glue injection groove is formed between the corner abutting plate 611 and the inner wall of the reserved hole 101. Sealant is injected into the glue injection groove, and after the sealant solidifies, a sealing block is formed, so as to improve the sealing performance between the four corners of the reserved hole 101 and the steel bottom formwork 1. The corner sealing strip 612 outside the corner abutting plate 611 can prevent the sealant from entering the moving groove 12, and the corner sealing strip 612 inside the corner abutting plate 611 can prevent concrete and slurry from entering the moving groove 12.

[0073] Embodiment 4 of the present application further provides a construction method for a formwork system for plugging and pouring temporary construction openings. Using the formwork system for plugging and pouring temporary construction openings of this embodiment, the following steps are included:

[0074] S1: First, the steel bars in the floor slab 100 are woven into a steel bar mesh in the reserved hole 101 by means of implanting steel bars or splicing.

[0075] S2: Plug the reserved hole 101 with the steel bottom formwork 1, so that the embedded screw 2 passes through the steel bottom formwork 1, and tighten the connecting nut 3 so that the steel bottom formwork 1 closely adheres to the bottom side of the floor slab 100.

[0076] S3: Turn the tightening nut 52, so that the tightening nut 52 abuts tightly against the side wall of the steel bottom formwork 1. The tightening nut 52 drives the sliding block 44 to slide through the tightening screw 51, so that the sealing plate 4 abuts tightly against the inner wall of the reserved hole 101.

[0077] S4: Turn the corner tightening nut 622 so that the corner tightening nut 622 abuts against the chamfer 13 of the steel bottom form 1. The corner tightening nut 622 drives the corner sliding block 613 to slide through the corner tightening screw 621, so that the corner plates 61 are respectively abutted against two adjacent sealing plates 4;

[0078] S5: Apply release agent on the top side of the steel bottom form 1, the inner side of the sealing plate 4, and the inner and outer sides of the corner plate 61 to facilitate form removal in the later stage;

[0079] S6: Inject sealant between the corner plate 61 and the inner wall of the reserved hole 101, and wait for the sealant to solidify to form a sealing block;

[0080] S7: Pour concrete into the reserved hole 101, and then complete the curing work;

[0081] S8: Remove the steel bottom form 1 and cut off the embedded screw 2 exposed on the bottom side of the floor slab 100. Due to the existence of the sealing plate 4 and the corner abutting plate 611, corresponding grooves are formed on the bottom side of the solidified concrete in the reserved hole 101, and the grooves are filled with concrete, so that the bottom side of the floor slab 100 is flatter.

[0082] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A formwork system for plugging and pouring temporary construction openings, characterized in that Comprising: Embedded screw (2), which is used to be embedded in the floor slab (100); Steel bottom formwork (1), the embedded screw (2) passes through the steel bottom formwork (1), the steel bottom formwork (1) abuts against the bottom side of the floor slab (100), and the steel bottom formwork (1) is used to seal the reserved hole (101) of the floor slab (100); Connecting nut (3), the connecting nut (3) is threadedly connected with the embedded screw (2), and the connecting nut (3) abuts tightly against the steel bottom formwork (1); Sealing plate (4), the sealing plate (4) is connected with the steel bottom formwork (1), there are a plurality of the sealing plates (4), and the sealing plate (4) abuts against the inner wall of the reserved hole (101); A corner sealing mechanism (6) is arranged on the steel bottom formwork (1), and the corner sealing mechanism (6) includes a corner plate (61) and a locking component (62); the corner plate (61) is slidably connected with the steel bottom formwork (1), the corner plate (61) is located inside the corner of two adjacent sealing plates (4), and the corner plate (61) is used to abut against two adjacent sealing plates (4); a glue injection groove is formed between the corner plate (61) and the inner wall of the reserved hole (101), and a sealing block is formed by injecting glue into the glue injection groove; the locking component (62) is used to lock the position of the corner plate (61); The corner plate (61) includes a corner abutting plate (611), a corner sealing strip (612) and a corner sliding block (613); the corner sliding block (613) is connected with the corner abutting plate (611), a moving groove (12) is formed on the steel bottom formwork (1), the corner sliding block (613) is slidably connected with the moving groove (12), and the corner abutting plate (611) abuts against two adjacent sealing plates (4); the corner sealing strip (612) is connected with the corner abutting plate (611), the corner sealing strip (612) abuts against the top side of the steel bottom formwork (1), and the corner sealing strip (612) seals the moving groove (12); The locking component (62) includes a corner tensioning screw (621) and a corner tensioning nut (622), the corner tensioning screw (621) is connected with the corner sliding block (613), the corner tensioning screw (621) passes through the steel bottom formwork (1), and the corner tensioning screw (621) slides along the moving groove (12); the corner tensioning nut (622) is threadedly connected with the corner tensioning screw (621), and the corner tensioning nut (622) abuts against the steel bottom formwork (1).

2. The formwork system for plugging and pouring of temporary construction openings according to claim 1, characterized in that, A tensioning component (5) is arranged on the steel bottom formwork (1), and the sealing plate (4) is slidably connected with the steel bottom formwork (1); the tensioning component (5) is used to tension the sealing plate (4) so that the sealing plate (4) abuts tightly against the inner wall of the reserved hole (101).

3. A formwork system for plugging and pouring temporary construction openings according to claim 2, characterized in that, The sealing plate (4) includes a support plate (41), a sliding block (44) and a top-side sealing strip (43); the sliding block (44) is connected to the support plate (41), the steel bottom mold (1) is provided with a sliding groove (11), and the sliding block (44) is slidably connected to the sliding groove (11); the top-side sealing strip (43) is connected to the support plate (41), the top-side sealing strip (43) abuts against the top side of the steel bottom mold (1), and the top-side sealing strip (43) seals the sliding groove (11).

4. A formwork system for plugging and pouring temporary construction openings according to claim 3, characterized in that, The tensioning assembly (5) includes a tensioning screw (51) and a tensioning nut (52), the tensioning screw (51) is connected to the sliding block (44), and the tensioning screw (51) passes through the steel bottom mold (1); the tensioning nut (52) is threadedly connected to the tensioning screw (51), and the tensioning nut (52) abuts against the side wall of the steel bottom mold (1).

5. A formwork system for plugging and pouring temporary construction openings according to claim 4, characterized in that, The sealing plate (4) further includes a sealing cushion plate (42), the sealing cushion plate (42) is connected to the support plate (41), the sealing cushion plate (42) abuts against the top side of the steel bottom mold (1), and the sealing cushion plate (42) is used to abut against the inner wall of the reserved hole (101).

6. The formwork system for plugging and pouring of temporary construction openings according to claim 5, characterized in that, A chamfer (13) is provided at the corner of the steel bottom mold (1), and the corner tensioning nut (622) abuts against the chamfer (13).

7. A construction method for a formwork system used for plugging and pouring temporary construction openings, characterized in that, Using the formwork system for plugging and casting of temporary construction openings as described in claim 6, comprising the following steps: S1: First, the steel bars in the floor slab (100) are woven into a steel bar mesh in the reserved hole (101) by means of implanting steel bars or splicing. S2: The steel bottom mold (1) is used to plug the reserved hole (101) so that the embedded screw (2) passes through the steel bottom mold (1), and the connecting nut (3) is tightened so that the steel bottom mold (1) closely abuts against the bottom side of the floor slab (100). S3: The tensioning nut (52) is turned so that the tensioning nut (52) abuts against the side wall of the steel bottom mold (1), and the tensioning nut (52) drives the sliding block (44) to slide through the tensioning screw (51), so that the sealing plate (4) abuts against the inner wall of the reserved hole (101). S4: The corner tensioning nut (622) is turned so that the corner tensioning nut (622) abuts against the chamfer (13) of the steel bottom mold (1), and the corner tensioning nut (622) drives the corner sliding block (613) to slide through the corner tensioning screw (621), so that the corner plate (61) abuts against two adjacent sealing plates (4) respectively. S5: A release agent is applied to the top side of the steel bottom mold (1), the inner side of the sealing plate (4) and the inner and outer sides of the corner plate (61). S6: Sealant is injected between the corner plate (61) and the inner wall of the reserved hole (101), and the sealant is allowed to solidify to form a sealing block. S7: Concrete is poured into the reserved hole (101), and then the curing work is completed. S8: Demold the steel bottom formwork (1) and cut off the embedded screw rods (2) exposed on the bottom side of the floor slab (100); due to the presence of the sealing plate (4) and the corner abutting plate (611), corresponding grooves are formed on the bottom side of the solidified concrete in the reserved hole (101), and fill the grooves with concrete.

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