Mortar leakage prevention structure of cavity floor slab formwork and construction method of mortar leakage prevention structure

Abstract

The invention relates to the technical field of cavity floor cover plate construction, and particularly discloses a cavity floor cover plate formwork mortar leakage prevention structure and a construction method thereof.The cavity floor cover plate formwork mortar leakage prevention structure is arranged between a bottom formwork and a prefabricated box body and comprises a leakage prevention formwork, a sponge strip and a fixing assembly, and the leakage prevention formwork is arranged on the top face of the bottom formwork; the leakage-proof formworks are located between every two adjacent prefabricated box bodies, the sponge strips are fixedly attached to the two sides of the leakage-proof formworks, the sides, away from the leakage-proof formworks, of the sponge strips abut against gaps between the top wall of the bottom formwork and the bottom walls of the prefabricated box bodies, and the fixing assemblies are arranged on the bottom formwork. The fixing device is used for fixing the leakage-proof template on a bottom template. According to the invention, the possibility of slurry leakage can be reduced, and the subsequent workload can be reduced; due to the fact that the sponge strip is arranged on the edge of the bottom of the prefabricated box body, concrete cannot flow into the space between the prefabricated box body and the bottom formwork, only the strip-shaped groove formed in the position of the leakage-proof formwork at the bottom of the cavity floor cover plate needs to be plastered, and the plastering area can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of cavity floor slab construction, and in particular to a cavity floor slab template anti-leakage slurry structure and a construction method thereof. Background Art

[0002] Cast-in-place reinforced concrete has its own defects such as heavy weight and easy shrinkage cracks, which relatively restrict the change and flexibility of building space. Prefabricated dense-ribbed box cavity floor refers to the prefabricated box cavity components embedded between cast-in-place dense-ribbed beams, thus forming an integral floor with bidirectional force transmission by dense-ribbed beams. Its characteristics are that a large amount of floor concrete can be evacuated, reducing the weight of the floor and reducing the amount of steel bars used.

[0003] When the floor slab is constructed using a cavity floor slab, it is necessary to first lay out the box placement position on the bottom formwork; after tying the beam rib reinforcement, affix a sponge sealing strip to the inner side of the positioning, and the sponge sealing strip is affixed into a rectangular circle; then the prefabricated box is placed on the bottom formwork, and the bottom wall of the prefabricated box and the circular sponge sealing strip on the bottom formwork are abutted against each other, thereby avoiding leakage in the gap between the bottom wall of the prefabricated box and the bottom formwork.

[0004] Usually, the prefabricated box includes a top cover plate and a bottom concrete prefabricated plate. Due to the insufficient flatness of the concrete prefabricated plate and the bottom template, the sand and other debris on the surface of the bottom template have not been cleaned, and the thickness and pasting position of the sponge sealing strip are not standardized, which makes it ineffective. As a result, this construction method is prone to leakage between the bottom wall of the prefabricated box and the top wall of the bottom template. Leakage will cause the concrete to solidify and the bottom template to be removed. Workers need to shovel the leaked slurry at the bottom of the prefabricated box, shake the slurry to roughen it, and then paint it after it is dried and firmly connected. The handling workload is large and the construction is relatively troublesome. Summary of the invention

[0005] In order to reduce the possibility of leakage, the present application provides a cavity floor slab formwork leakage prevention structure and a construction method thereof.

[0006] In a first aspect, the present application provides a cavity floor slab formwork anti-leakage slurry structure, which adopts the following technical solution: A cavity floor slab formwork leak-proof slurry structure is arranged between a bottom formwork and a prefabricated box, the prefabricated box is arranged on the top surface of the bottom formwork, a plurality of prefabricated boxes are arranged evenly at intervals, and the leak-proof formwork includes a sponge strip and a fixing assembly, the leak-proof formwork is arranged on the top surface of the bottom formwork, the leak-proof formwork is located between two adjacent prefabricated boxes, the sponge strip is fixedly attached to both sides of the leak-proof formwork, the side of the sponge strip away from the leak-proof formwork is pressed against the gap between the top wall of the bottom formwork and the bottom wall of the prefabricated box, and the fixing assembly is arranged on the bottom formwork for fixing the leak-proof formwork on the bottom formwork.

[0007] By adopting the above technical solution, the sponge strips are bonded to both sides of the leakproof template, and then the leakproof template is placed on the top wall of the bottom template, and the sponge strip is pressed against the gap between the bottom edge of the prefabricated box and the bottom template, so as to seal the gap, thereby helping to enhance the sealing and reduce the possibility of leakage in the gap between the prefabricated box and the bottom template; the leakproof template is used to support the sponge strip, which can reduce the possibility of the position of the sponge strip being offset during the subsequent concrete pouring process, thereby ensuring the leakproof effect. In addition, the sponge strip and the leakproof template form a whole, which can be directly used after being transported to the construction site, thereby helping to reduce the construction workload on site; Since the sponge strip is attached to the leak-proof template in a straight line, the bonding process of the sponge strip is simpler. Compared with the traditional method of attaching a rectangular ring-shaped sponge strip, the sponge strip has no corners, so the sealing effect is better. In the traditional sealing method, a sponge strip needs to be pasted on the bottom template. The sponge strip has a rectangular ring structure, and the top of the sponge strip is against the bottom wall of the prefabricated box. Therefore, after pouring concrete on the top of the bottom template, the concrete will penetrate to the bottom of the prefabricated box and stay at the sponge strip. After the bottom template is removed later, it is necessary to plaster the rectangular area surrounded by the inner side of the sponge strip for leveling, and the plastering area is large. In this solution, the sponge strip is arranged on the outside of the prefabricated box, so the sponge strip can block the concrete, so that the concrete cannot enter the gap between the prefabricated box and the bottom template. After the bottom template is removed later, a strip groove will be formed at the leak-proof template. Therefore, it is only necessary to plaster the strip groove for leveling. While ensuring the leak-proof effect, the subsequent plastering area can be reduced, which helps to reduce the workload and save plastering materials.

[0008] Optionally, the fixing assembly includes wooden planks and steel nails, the wooden planks are arranged on a side of the bottom template away from the anti-leakage template, and the steel nails are inserted between the anti-leakage template, the bottom template and the wooden planks.

[0009] By adopting the above technical solution, the nailed steel nails can fix the leak-proof template on the bottom template, thereby improving the stability of the sponge strip pasted on the bottom template, thereby reducing the possibility of the sponge strip running off during the subsequent concrete pouring process, thereby ensuring the leak-proof effect.

[0010] Optionally, the leak-proof template includes a first template and a second template, the first template and the second template are both in the shape of long strips, the sponge strips are fixedly arranged on both sides of the first template and the second template, the length directions of the first template and the second template are vertically staggered, the first template is provided with an installation groove, and the second template is inserted into the installation groove.

[0011] By adopting the above technical solution, the setting of the installation groove provides an avoidance space for the insertion of the second template, so that the second template can be set to a long strip shape, which can make the subsequent installation and removal process of the second template easier and help reduce the workload.

[0012] Optionally, the mounting groove is arranged on a side of the first template close to the bottom template, so that the bottom wall of the second template passing through the mounting groove abuts against the top wall of the bottom template.

[0013] By adopting the above technical solution, since the bottom wall of the second template is against the top wall of the bottom template, the sponge strip on the side wall of the second template can fit more closely in the gap between the bottom wall of the prefabricated box and the top wall of the bottom template, thereby ensuring the leak-proof effect of the sponge strip.

[0014] Optionally, the first formwork includes a support plate and a connecting plate, wherein two support plates are provided and are arranged in parallel at intervals, the mounting groove is provided on the support plate, the sponge strip is fixedly provided on the side of the two support plates away from each other, the connecting plate is fixedly connected between the two support plates, the connecting plate is located on the side of the support plate close to the bottom formwork, and the bottom wall of the connecting plate is abutted against the top wall of the bottom formwork, so that the area between the two support plates above the connecting plate can be filled with concrete.

[0015] By adopting the above technical solution, the volume of the first template is reduced, thereby reducing the space occupied by the first template. The thickness of the strip groove that needs to be plastered after the first template is subsequently removed is smaller, which helps to further reduce the amount of plastering and save more materials.

[0016] Optionally, a plurality of connecting plates are provided and are arranged at intervals along the length direction of the supporting plate.

[0017] By adopting the above technical solution, the strength of the first template can be improved, which makes it easier to reuse after recycling and improves the utilization rate of materials.

[0018] Optionally, the second template includes a side panel and a bottom panel, wherein two side panels are provided and arranged in parallel at intervals, the sponge strip is fixedly provided on the side of the two side panels away from each other, the bottom panel is fixedly connected between the two side panels, and the bottom panel is located on the side of the side panel close to the bottom template.

[0019] By adopting the above technical solution, the volume of the second template can be reduced, thereby reducing the space occupied by the second template. The thickness of the strip groove that needs to be plastered after the second template is subsequently removed is smaller, which helps to further reduce the amount of plastering and save more materials.

[0020] Optionally, a sealing strip is further provided on the side of the support plate away from the sponge strip and between the sponge strips on the side plate.

[0021] By adopting the above technical solution, the sealing strip can seal the gap at the corner between the first template and the second template, thereby reducing the possibility of leakage caused by poor sealing at the corner.

[0022] Optionally, the leak-proof template is a wooden template.

[0023] By adopting the above technical solution, the leak-proof template is easy to manufacture and has low cost.

[0024] In a second aspect, the present application provides a construction method, which adopts the following technical solution: A construction method, using any of the above-mentioned cavity floor slab formwork anti-leakage slurry structures, comprises the following steps: a. Paste the sponge strips on both sides of the leak-proof template along the length direction of the leak-proof template; b. Fix the wood on the bottom wall of the bottom template, and place the leakproof template on the top surface of the bottom template, so that the leakproof template is located between two adjacent prefabricated boxes, and the sponge strip on the outside of the leakproof template is against the gap between the prefabricated box and the bottom template; c. Fix the leak-proof template on the bottom template through the fixing assembly; d. Pour concrete on the prefabricated box and the leak-proof formwork; e. After the concrete solidifies, it forms a floor slab together with the prefabricated box, and the bottom formwork and leakproof formwork are removed; f. On the bottom wall of the formed floor slab, plaster the gaps at the leak-proof formwork.

[0025] By adopting the above technical solution, the leak-proof template with the sponge strip is placed on the top wall of the bottom template, and the sponge strip is attached to the gap between the bottom edge of the prefabricated box and the bottom template, thereby reducing the possibility of leakage.

[0026] In summary, this application includes the following beneficial technical effects: 1. The sponge strip is arranged in the gap between the bottom edge of the prefabricated box and the bottom template, so that it can be better sealed, thereby reducing the possibility of leakage.

[0027] 2. The sponge strip is set at the bottom edge of the prefabricated box, so the subsequent poured concrete will form a strip groove at the leak-proof template after solidification. The strip groove only needs to be plastered and leveled. Compared with the traditional method of plastering and leveling the large area enclosed by the sponge strip, the plastering area is smaller, which helps to reduce the workload of subsequent plastering and save more materials.

[0028] 3. Setting the first formwork as a combination of a support plate and a connecting plate helps to reduce the volume of the first formwork, thereby reducing the space occupied by the first formwork, and helps to reduce the thickness of the strip groove formed by the cavity floor slab at the first formwork, thereby further reducing the amount of plastering. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a cross-sectional view of Example 1 of the present application; Figure 2 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 3 is a cross-sectional view of Example 1 of the present application for illustrating a fixing component; Figure 4 This is a schematic diagram of the structure of Example 1 of the present application after the concrete pouring layer is hidden; Figure 5 This is a structural schematic diagram of Example 1 of the present application for showing the installation positions of the long template and the short template; Figure 6 is a cross-sectional view of Example 2 of the present application; Figure 7 This is a structural schematic diagram of Example 2 of the present application for showing the installation positions of the first template and the second template; Figure 8 It is a schematic diagram of the structure of the first template in Example 2 of the present application; Fig. 9 It is a schematic diagram of the structure of the second template in Example 2 of the present application.

[0030] Figure numerals: 1. bottom formwork; 2. prefabricated box; 21. cover plate; 22. prefabricated concrete plate; 3. leak-proof formwork; 31. long formwork; 32. short formwork; 33. first formwork; 331. support plate; 3311. mounting groove; 332. connecting plate; 34. second formwork; 341. side plate; 342. bottom plate; 4. sponge strip; 5. fixing assembly; 51. wooden square; 52. steel nail; 6. sealing strip; 7. beam rib reinforcement. DETAILED DESCRIPTION

[0031] The following combination Figure 1-Figure 9 This application is described in further detail.

[0032] Example 1 The present application embodiment discloses a cavity floor slab formwork anti-leakage slurry structure. Figure 1 and Figure 2The cavity floor slab formwork anti-leakage slurry structure is arranged between the bottom formwork 1 and the prefabricated box 2. The prefabricated box 2 is arranged on the top of the bottom formwork 1, and a plurality of prefabricated boxes 2 are arranged in an array. The prefabricated box 2 includes a top cover plate 21 and a concrete prefabricated plate 22 fixedly connected to the bottom of the cover plate 21. A cavity is formed between the cover plate 21 and the concrete prefabricated plate 22. Therefore, the arrangement of the prefabricated box 2 can reduce the amount of concrete in the floor slab, thereby reducing the deadweight of the floor slab.

[0033] Reference Figure 3 , Figure 4 and Figure 5 The anti-leakage slurry structure of the cavity floor slab formwork includes an anti-leakage formwork 3, a sponge strip 4 and a fixing component 5. The anti-leakage formwork 3 includes a long formwork 31 and a short formwork 32, and both the long formwork 31 and the short formwork 32 are wooden formworks. Sponge strips 4 are bonded to both sides of the long formwork 31 and the short formwork 32 along their own length directions. The long formwork 31 and the short formwork 32 are both arranged on the top wall of the bottom formwork 1, and the long formwork 31 is arranged along the width direction of the bottom formwork 1; a plurality of long formworks 31 are arranged and arranged in parallel and spaced apart, and each long formwork 31 is located between two adjacent prefabricated boxes 2. A plurality of short formworks 32 are arranged and arranged in an array; the short formwork 32 is located between two adjacent long formworks 31, and the short formwork 32 is also located between two adjacent prefabricated boxes 2. The sponge strips 4 on the side walls of the long formwork 31 abut against the gap between the bottom wall at the left and right edges of the concrete precast panel 22 and the top wall of the bottom formwork 1, and the sponge strips 4 on the side walls of the short formwork 32 abut against the gap between the bottom wall at the front and rear edges of the concrete precast panel 22 and the top wall of the bottom formwork 1, thereby reducing the possibility of leakage at the gap between the bottom edge of the precast box 2 and the top wall of the bottom formwork 1. The fixing assembly 5 is arranged on the bottom formwork 1, and the fixing assembly 5 is used to fix the long formwork 31 and the short formwork 32 to the bottom formwork 1.

[0034] Reference Figure 3 The number of the fixing components 5 is the same as the sum of the number of the long templates 31 and the short templates 32, and each fixing component 5 corresponds to a long template 31 or a short template 32. The fixing components 5 include wooden squares 51 and steel nails 52. The wooden squares 51 are fixedly connected to the bottom wall of the bottom template 1; steel nails 52 are inserted between the long template 31, the bottom template 1 and the wooden squares 51, and between the short template 32, the bottom template 1 and the wooden squares 51, so as to fix the long template 31 and the bottom template 1 on the bottom template 1.

[0035] The implementation principle of Example 1 is: after the erection of the bottom template 1, the binding of the beam rib reinforcement bars 7 and the installation of the prefabricated box 2 are completed, the anti-leakage slurry structure is constructed. During construction, the long template 31 and the short template 32 with sponge strips 4 pasted on the side walls are placed on the top wall of the bottom template 1, and the long template 31 and the short template 32 are arranged neatly, and the sponge strips 4 on the long template 31 and the short template 32 are respectively pressed against the bottom wall edges around the prefabricated box 2. Then, the steel nails 52 are nailed in to fix the long template 31 and the short template 32, thereby improving the stability of the sponge strips 4 on the long template 31 and the short template 32 and ensuring the anti-leakage effect.

[0036] Then, concrete can be poured on the bottom formwork 1 and the prefabricated box 2. After the concrete solidifies, the solidified concrete layer and the prefabricated box 2 inside the concrete layer can form a cavity floor slab together. Then, the bottom formwork 1 and the leakproof formwork 3 below the cavity floor slab are removed. Since the leakproof formwork 3 occupies a certain space, the concrete cannot flow into the leakproof formwork 3 during the pouring process, which will form a strip groove on the bottom wall of the cavity floor slab between the bottom walls of the two adjacent prefabricated boxes 2. Then, the strip groove is plastered for leveling.

[0037] This embodiment also discloses a construction method, comprising the following steps: Step a. Paste the sponge strip 4 on both sides of the long template 31 along the length direction of the long template 31 , and paste the sponge strip 4 on both sides of the short template 32 along the length direction of the short template 32 .

[0038] Step b. Place the long template 31 and the short template 32 on the top wall of the bottom template 1, and arrange the long template 31 and the short template 32 neatly, and the sponge strips 4 at the edges of the long template 31 and the short template 32 are respectively pressed against the bottom wall edges around the prefabricated box 2.

[0039] Step c. Driving the steel nails 52 , fix the long template 31 and the short template 32 on the bottom template 1 .

[0040] Step d. pouring concrete onto the prefabricated box 2 , the long formwork 31 and the short formwork 32 .

[0041] Step e. After the concrete solidifies, a cavity floor slab can be formed, and the bottom formwork 1, the long formwork 31 and the short formwork 32 at the bottom of the cavity floor slab are removed.

[0042] Step f. Plaster the strip grooves at the long formwork 31 and the short formwork 32 on the bottom wall of the cavity floor slab for leveling.

[0043] Example 2 Reference Figure 6 and Figure 7The difference between this embodiment and the embodiment 1 is that the leak-proof template 3 in this embodiment includes a first template 33 and a second template 34. The first template 33 and the second template 34 are both arranged in a long strip shape, the first template 33 is arranged along the width direction of the bottom template 1, and the second template 34 is arranged along the length direction of the bottom template 1, so the first template 33 and the second template 34 are arranged vertically and staggered. The sponge strip 4 is attached to both sides of the first template 33 and the second template 34.

[0044] Reference Figure 7 and Figure 8 , the first formwork 33 includes a support plate 331 and a connecting plate 332. Two support plates 331 are provided and arranged in parallel at intervals, and the sponge strip 4 is pasted on the side of the two support plates 331 away from each other; the connecting plate 332 is vertically fixedly connected between the two support plates 331, so that the two support plates 331 can be fixed together through the connecting plate 332. There are multiple connecting plates 332 and they are evenly spaced along the length direction of the support plates 331, so that the overall strength of the first formwork 33 can be improved. The connecting plate 332 is fixedly connected to the bottom wall of the support plate 331, and the bottom wall of the connecting plate 332 can be against the top wall of the bottom formwork 1, so that the area between the two support plates 331 above the connecting plate 332 can be filled with concrete during the pouring process, thereby reducing the thickness of the subsequent plastering required and saving more materials.

[0045] A mounting groove 3311 is provided on one side of the support plate 331 close to the bottom template 1, and a plurality of mounting grooves 3311 are provided and are evenly spaced along the length direction of the support plate 331. The second template 34 is inserted into the mounting groove 3311, and the bottom wall of the second template 34 abuts against the top wall of the bottom template 1, and the sponge strips 4 on both sides of the second template 34 abut against the bottom wall edges of the two adjacent prefabricated boxes 2, so that the second template 34 and the sponge strips 4 inserted into the mounting groove 3311 can better prevent leakage.

[0046] Reference Fig. 9 The second formwork 34 includes a side plate 341 and a bottom plate 342. The side plates 341 are provided with two and are arranged in parallel at intervals. The bottom plate 342 is fixedly connected between the two side plates 341. The bottom plate 342 is provided at the bottom of the side plates 341. The bottom plates 342 are provided with multiple and are evenly arranged along the length direction of the side plates 341. The bottom wall of the bottom plate 342 can abut against the top wall of the bottom formwork 1. The sponge strip 4 is attached to the side of the two side plates 341 that are away from each other, so that the thickness of the strip groove generated at the second formwork 34 on the cavity floor can be reduced, thereby reducing the thickness of the subsequent plastering, and saving more materials.

[0047] In this embodiment, the steel nails 52 are inserted into the connecting plate 332 and the bottom plate 342 , so that the first template 33 and the second template 34 can be fixed on the bottom template 1 , thereby improving the stability of the sponge strips 4 at the edges of the first template 33 and the second template 34 after installation.

[0048] In order to further reduce the possibility of leakage, a sealing strip 6 is bonded between the side of the support plate 331 away from the sponge strip 4 and the sponge strip 4 on the side plate 341. The sealing strip 6 and the sponge strip 4 are made of the same material, both of which are sponge sealing strips. Therefore, the sealing strip 6 can seal the corners at the bottom of the prefabricated box 2, thereby enhancing the sealing performance.

[0049] The implementation principle of Example 2 is as follows: the sponge strips 4 are respectively bonded to the two sides of the first template 33 and the second template 34, and then the first template 33 is placed on the top wall of the bottom template 1, and the sponge strips 4 on both sides of the first template 33 are respectively pressed against the left and right sides of the bottom of the prefabricated box 2; then the second template 34 is inserted through the mounting groove 3311 on the first template 33, and the second template 34 is placed on the bottom wall of the bottom template 1, and the sponge strips 4 on both sides of the second template 34 are respectively pressed against the front and back sides of the bottom of the prefabricated box 2. Then, the steel nails 52 are nailed in to fix the first template 33 and the second template 34 on the bottom template 1, thereby improving the stability of the sponge strips 4. Then the sealing strip 6 is bonded to the corner between the first template 33 and the second template 34 to further enhance the sealing and reduce the possibility of leakage.

[0050] Then, concrete is poured on the top of the bottom formwork 1, and a cavity floor slab is formed after the concrete layer solidifies. Then, the bottom formwork 1, the first formwork 33 and the second formwork 34 under the cavity floor slab are removed; since the first formwork 33 and the second formwork 34 occupy a small volume, only a small amount of plastering is required for leveling.

[0051] The above are optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cavity floor slab formwork anti-leakage slurry structure, arranged between a bottom formwork (1) and a prefabricated box (2), the prefabricated box (2) being arranged on the top surface of the bottom formwork (1), a plurality of prefabricated boxes (2) being arranged evenly spaced, characterized in that: The invention comprises a leakproof template (3), a sponge strip (4) and a fixing assembly (5), wherein the leakproof template (3) is arranged on the top surface of the bottom template (1), the leakproof template (3) is located between two adjacent prefabricated boxes (2), the sponge strip (4) is fixedly attached to both sides of the leakproof template (3), the side of the sponge strip (4) away from the leakproof template (3) is pressed against the gap between the top wall of the bottom template (1) and the bottom wall of the prefabricated box (2), and the fixing assembly (5) is arranged on the bottom template (1) and is used to fix the leakproof template (3) on the bottom template (1).

2. The cavity floor slab formwork anti-leakage structure according to claim 1, characterized in that: The fixing assembly (5) comprises a wooden square (51) and a steel nail (52); the wooden square (51) is arranged on a side of the bottom template (1) away from the anti-leakage template (3); and the steel nail (52) is inserted between the anti-leakage template (3), the bottom template (1) and the wooden square (51).

3. The cavity floor slab formwork anti-leakage structure according to claim 1, characterized in that: The leak-proof template (3) comprises a first template (33) and a second template (34); the first template (33) and the second template (34) are both arranged in a long strip shape; the sponge strip (4) is fixedly arranged on both sides of the first template (33) and the second template (34); the length direction of the first template (33) and the second template (34) are arranged vertically and staggered; the first template (33) is provided with a mounting groove (3311) along its width direction; and the second template (34) is inserted into the mounting groove (3311).

4. The anti-leakage slurry structure of the cavity floor slab formwork according to claim 3 is characterized by: The installation groove (3311) is arranged on a side of the first template (33) close to the bottom template (1), so that the bottom wall of the second template (34) passing through the installation groove (3311) abuts against the top wall of the bottom template (1).

5. The cavity floor slab formwork anti-leakage structure according to claim 3, characterized in that: The first template (33) comprises a support plate (331) and a connecting plate (332), two support plates (331) are provided and are arranged in parallel at intervals, the mounting groove (3311) is provided on the support plate (331), the sponge strip (4) is fixedly provided on a side of the two support plates (331) that are away from each other, the connecting plate (332) is fixedly connected between the two support plates (331), the connecting plate (332) is located on a side of the support plate (331) close to the bottom template (1), and the bottom wall of the connecting plate (332) abuts against the top wall of the bottom template (1), so that the area between the two support plates (331) above the connecting plate (332) can be filled with concrete.

6. The cavity floor slab formwork anti-leakage structure according to claim 5, characterized in that: A plurality of the connecting plates (332) are provided and are arranged at intervals along the length direction of the supporting plate (331).

7. The anti-leakage slurry structure of the cavity floor slab formwork according to claim 6 is characterized by: The second template (34) comprises a side plate (341) and a bottom plate (342), wherein two side plates (341) are provided and are arranged in parallel at an interval, the sponge strip (4) is fixedly provided on a side of the two side plates (341) that are away from each other, the bottom plate (342) is fixedly connected between the two side plates (341), and the bottom plate (342) is located on a side of the side plate (341) that is close to the bottom template (1).

8. The cavity floor slab formwork anti-leakage structure according to claim 7, characterized in that: A sealing strip (6) is also provided between the side of the support plate (331) away from the sponge strip (4) and the sponge strip (4) on the side plate (341).

9. The cavity floor slab formwork anti-leakage structure according to claim 1, characterized in that: The leak-proof template (3) is a wooden template.

10. A construction method using the cavity floor slab formwork anti-leakage slurry structure according to any one of claims 1 to 9, characterized in that: The construction method comprises the following steps: a. Paste the sponge strips (4) on both sides of the leak-proof template (3) along the length direction of the leak-proof template (3); b. Fixing the wooden planks (51) on the bottom wall of the bottom template (1), placing the leakproof template (3) on the top surface of the bottom template (1), so that the leakproof template (3) is located between two adjacent prefabricated boxes (2), and the sponge strips (4) on the outside of the leakproof template (3) are against the gap between the prefabricated boxes (2) and the bottom template (1); c. fixing the leak-proof template (3) on the bottom template (1) by means of a fixing assembly (5); d. pouring concrete onto the prefabricated box (2) and the leakproof formwork (3); e. After the concrete solidifies, it forms a floor slab (21) together with the prefabricated box body (2), and the bottom formwork (1) and the leakproof formwork (3) are removed; f. On the bottom wall of the formed floor slab (21), the gap at the leakproof formwork (3) is plastered.

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