A kind of flat roof laminated board anti-leakage structure

Abstract

The utility model is suitable for the technical field of the anti-seepage of laminated slab, provides a kind of flat roof laminated slab anti-seepage structure, including connecting piece, connecting piece and laminated slab body are sealed and prevented seepage by multiple sealed anti-seepage pieces, and sealed anti-seepage piece includes convex structure, recess, two side grooves and two reinforcing sealing structures;Convex structure includes convex body and two ladder sealing grooves opened in the both sides of convex body;Ladder sealing groove includes multiple sealing grooves;Two side grooves are opened on the connecting piece of the both sides of recess;Two reinforcing sealing structures are distributed in two side grooves respectively;Realize that sealed anti-seepage piece is from whole to local and from single level to multiple levels the efficient accurate sealing of staggered layer anti-seepage, fundamentally block seepage passage, avoid the moisture in concrete from seepage and pollute wall;This method can realize the real anti-seepage, also can avoid the problem that concrete local excessive water loss leads to, influence the hydration reaction and final strength of concrete.

Description

Technical Field

[0001] This utility model relates to the field of composite slab waterproofing technology, and more specifically, to a waterproofing structure for composite slabs on flat roofs. Background Technology

[0002] A flat roof composite slab is an assembled monolithic floor structure composed of a precast base slab and a cast-in-place reinforced concrete layer. This structure divides the floor slab into two parts along its thickness: a precast base slab at the bottom and a cast-in-place reinforced concrete composite layer on top. During construction, the precast base slab serves as a permanent formwork for the cast-in-place concrete composite layer, bearing both construction loads and forming an integral composite concrete component with the cast-in-place concrete layer, sharing the service load. Composite slabs can be classified according to their stress state into unidirectional and bidirectional composite slabs; and according to the type of precast base slab, they can be classified into truss reinforced concrete base slabs, prestressed concrete flat slabs, prestressed concrete ribbed slabs, and prestressed concrete hollow slabs, etc.

[0003] The waterproofing performance of composite slabs on flat roofs directly affects the building's functionality and lifespan. The key to waterproofing composite slabs lies in ensuring that the concrete on both sides of the composite surface bears the load and coordinates stress, as well as properly handling the joints between slabs and between slabs and walls. Currently, two main methods are used for waterproofing composite slab joints: separate joints (closely fitted) and integral joints (post-cast concrete strips). For two-way composite slabs, integral joints on the sides should preferably be located in the secondary stress direction of the composite slab and should avoid the section with the maximum bending moment; the width of the post-cast strip should not be less than 200mm.

[0004] Existing waterproofing technologies for composite slab roofs still have several problems, especially the risk of leakage at the joints between the walls and the composite slabs. Many existing solutions focus on collecting and draining moisture from the concrete to prevent wall contamination, rather than fundamentally blocking the leakage channels. For example, patent application number 202422347715.6 describes a prefabricated composite slab roof waterproofing structure. While this method avoids wall contamination by draining water through drainage channels, it fails to achieve true waterproofing and may lead to excessive localized water loss in the concrete, affecting its hydration reaction and final strength. This type of passive drainage rather than active waterproofing approach has inherent drawbacks: excessive water loss from the concrete can lead to localized water-cement ratio imbalances, reducing the concrete's density and durability.

[0005] Therefore, there is an urgent need to develop a waterproofing structure for flat roof composite panels that can fundamentally block the path of water penetration, avoid the concrete quality problems caused by over-reliance on drainage methods in current technologies, and improve the reliability and durability of the waterproofing system. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies: current waterproofing technologies for composite slabs on flat roofs still have several problems, especially the risk of leakage at the joints between the walls and the composite slabs. Many existing solutions focus on collecting and draining moisture from the concrete to prevent wall contamination, rather than fundamentally blocking the leakage channels; this method fails to achieve true waterproofing and may lead to excessive local water loss in the concrete, affecting the hydration reaction and final strength of the concrete; therefore, this invention proposes a waterproofing structure for composite slabs on flat roofs.

[0007] The specific technical solution is as follows: a waterproof structure for a flat roof composite slab, comprising a connector installed between the composite slab body and the wall, wherein the composite slab body and the wall are positioned by multiple positioning rods; the connector and the composite slab body are sealed and waterproofed by multiple sealing and waterproofing components, the sealing and waterproofing components including:

[0008] A convex structure is integrally fixed to the composite plate body; the convex structure includes a convex body and two stepped sealing grooves opened on both sides of the convex body; the stepped sealing grooves include multi-level sealing grooves.

[0009] A groove is formed on the connector, and the size of the groove matches the size of the protrusion structure.

[0010] Two side grooves are formed on the connectors on both sides of the groove;

[0011] Two reinforced sealing structures are respectively distributed in two side grooves, and the dimensions of the reinforced sealing structures are matched with those of the stepped sealing grooves;

[0012] In the technical solution of this utility model, a liquid collection tank is provided at the bottom of the groove, and the liquid collection tank is connected to the bottom of the groove. The liquid collection tank is used to prevent leakage caused by partial failure of the sealing and anti-leakage component.

[0013] In the technical solution of this utility model, the connecting member includes:

[0014] L-shaped plate;

[0015] Multiple reinforcing ribs are distributed in an array on the L-shaped plate, and the reinforcing ribs are used to enhance the supporting force of the L-shaped plate.

[0016] Multiple mounting bolts are used to assemble the L-shaped plate onto the wall.

[0017] In the technical solution of this utility model, the reinforced sealing structure includes:

[0018] A telescopic sealing body is slidably assembled inside the side groove. A rubber gasket is sleeved on the outside of the telescopic sealing body and elastically connected to the inside of the side groove by the rubber gasket. The rubber gasket is used to seal the telescopic sealing body and the side groove through a movable connection.

[0019] The abutment body is movably inserted into the side wall of the side groove, and the degree of insertion into the side wall of the side groove is controlled by bolts.

[0020] Furthermore, the telescopic seal includes:

[0021] Sealing block;

[0022] A sealing frame A is movably fitted outside the sealing block;

[0023] Sealing frame B is movably fitted outside sealing frame A.

[0024] Furthermore, the sealing block and sealing frame A, as well as the sealing frame A and sealing frame B, are connected by rubber rings; the rubber rings are used to seal and move through the sealing block and sealing frame A, as well as the sealing frame A and sealing frame B.

[0025] Furthermore, the sealing block is provided with an anti-detachment protrusion A on its exterior, which is used to prevent the sealing frame A from falling off the sealing block; the sealing frame A is provided with an anti-detachment protrusion B on its exterior, which is used to prevent the sealing frame B from falling off the sealing frame A.

[0026] Furthermore, the abutment includes:

[0027] Abutting plate, one end of which is movably inserted into the bottom of the side groove, and the other end abutting against the sealing block;

[0028] A wedge-shaped surface, wherein the wedge-shaped surface is formed on the abutment plate;

[0029] Multiple push plates are movably inserted into the side wall of the side groove; the multiple push plates are distributed along the abutment plate array;

[0030] Multiple wedge blocks, each wedge block corresponding to a multiple push plate; the wedge blocks are integrally fixed to the ends of the push plates; the side of the wedge block away from the push plate abuts against the wedge surface.

[0031] Multiple bolts are provided, all threaded through the connector; the ends of the bolts abut against the push plate, and through the rotation of the bolt threads, they enter the side groove and push the push plate and wedge block upward, thus controlling the degree to which the abutment plate abuts against and pushes the sealing block.

[0032] In summary, rotating the bolt causes its thread to penetrate into the side groove, pushing the push plate and wedge block upwards. The wedge block and wedge surface engage to push the abutment plate, causing the abutment plate to abut against the sealing block. This completes the process of the sealing block being pushed out from inside sealing frame A, and sealing frame A being pushed out from inside sealing frame B, achieving a further multi-level sealing of the enhanced sealing structure in the multi-level sealing groove.

[0033] This utility model of a waterproof structure for composite slab roofing has the following advantages compared to existing technologies:

[0034] 1. During the assembly process between the composite slab body and the wall using connectors, the convex structure intersects into the groove. Two reinforced sealing structures inside the two side grooves are staggered from both sides of the convex structure, sequentially matching the dimensions of the multi-level sealing grooves, and then fitted and sealed onto the convex structure. This achieves a multi-level sealing effect in localized areas by utilizing the two side grooves and two reinforced sealing structures, based on the overall sealing of the convex structure and groove. This completes the efficient and precise sealing and seepage prevention from overall to localized and from single-level to multi-level staggered layers, fundamentally blocking the leakage channel and preventing water from seeping out of the concrete and contaminating the wall. This method achieves true seepage prevention while also avoiding excessive localized water loss in the concrete, which could affect the hydration reaction and final strength of the concrete.

[0035] Based on the overall seal, the convex structure and groove are interspersed, and two side grooves and two reinforced sealing structures are used to further achieve multi-level sealing in local areas. Then, the liquid collection tank is used to prevent leakage caused by partial failure of the sealing and anti-leakage parts.

[0036] 2. Traditional pre-compression sealing strips may be at risk of stress relaxation after long-term use. However, this invention dynamically applies sealing pressure through a bolt-driven wedge mechanism, which not only achieves initial precision sealing, but more importantly, it allows for pressure compensation during construction, commissioning, or future maintenance. This design enables the sealing system to adapt to minor deformations and settlements of the joint to a certain extent, and even compensate for slight wear of the sealing material itself, achieving "adaptive sealing," a long-term reliable performance that is difficult to achieve with static sealing structures.

[0037] 3. Combining the collection tank with multi-stage active seals creates a synergistic effect of multiple layers of protection. Conventional designs either only block or only drain; in this structure, the multi-stage seals act as the main force, undertaking the vast majority of the seepage prevention task and fundamentally blocking water leakage; while the collection tank serves as the final, preventative barrier. This division of labor means that even if the multi-stage seals at the front end experience extremely minor failures (not complete failures) under extreme conditions, the entire system can still guarantee no leakage. This design philosophy upgrades from "preventing leakage" to "tolerating minor failures without affecting overall functionality," greatly improving the reliability and durability of the system.

[0038] 4. Existing technologies drain water from concrete through drainage channels, which essentially pits seepage prevention against the normal hydration and curing of concrete. This invention achieves seepage prevention through near-absolute physical blocking, completely eliminating the need to drain water from the concrete. It perfectly solves a long-standing contradiction in engineering: ensuring that the structure does not leak while also ensuring that the concrete maintains suitable humidity inside to complete a full hydration reaction. This avoids quality problems such as decreased strength and accelerated carbonation caused by excessive local water loss, achieving a balance between seepage prevention and optimal concrete curing performance.

[0039] 5. The adjustable bolt drive mechanism makes the sealing operation no longer a one-time process; construction personnel can intuitively control the sealing pressure by controlling the amount of bolt screwing in according to the actual site conditions, ensuring that every joint can achieve the sealing state required by the design. This visualized and quantifiable construction process greatly reduces the quality fluctuations caused by differences in worker operation, and achieves higher and more stable overall construction quality. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the anti-leakage structure of the composite slab for flat roofs of this utility model;

[0041] Figure 2 for Figure 1 Schematic diagram of the structure of the central sealing leak-proof component;

[0042] Figure 3 for Figure 2 Schematic diagram of the convex structure;

[0043] Figure 4 for Figure 2 Schematic diagram of the central groove;

[0044] Figure 5 for Figure 2 Schematic diagram of the reinforced sealing structure;

[0045] Figure 6 for Figure 5 A schematic diagram of the reinforced sealing structure after it has been flipped over;

[0046] Figure 7 for Figure 6 A schematic diagram of the structure of the central abutment.

[0047] In the attached diagram:

[0048] Composite plate body 100, positioning rod 110, connector 200, wall 300, sealing and leak-proof component 400, protruding structure 410, stepped sealing groove 411, reinforced sealing structure 420, telescopic sealing body 421, abutment body 422, groove 430, liquid collection groove 440, side groove 450, sealing block 4211, sealing frame A 4212, sealing frame B 4213, abutment plate 4221, wedge surface 4222, push plate 4223, wedge block 4224. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the protection scope of this utility model.

[0050] In this embodiment of the utility model, please refer to Figure 1 A waterproof structure for a flat roof composite slab includes a connector 200 installed between the composite slab body 100 and the wall 300, wherein the composite slab body 100 and the wall 300 are positioned by a plurality of positioning rods 110.

[0051] The detailed structure of the composite plate body 100 is not the subject of this application and belongs to the prior art. It can be purchased directly on the market or assembled by purchasing parts, etc., and will not be described in detail here.

[0052] In order to overcome the problem that existing technical solutions focus on collecting and draining moisture from concrete to prevent wall contamination, rather than fundamentally blocking the leakage channels; this method fails to achieve true seepage prevention and may also lead to excessive local water loss in the concrete, affecting the hydration reaction and final strength of the concrete, the following solution is proposed:

[0053] Please continue reading. Figures 1-4 The connector 200 and the composite plate body 100 are sealed and leak-proof by a plurality of sealing and leak-proof components 400, the sealing and leak-proof components 400 including:

[0054] A convex structure 410 is integrally fixed on the composite plate body 100; the convex structure 410 includes a convex body and two stepped sealing grooves 411 opened on both sides of the convex body; the stepped sealing grooves 411 include multi-level sealing grooves.

[0055] A groove 430 is formed on the connector 200, and the size of the groove 430 matches the size of the protrusion structure 410.

[0056] Two side grooves 450 are formed on the connectors 200 on both sides of the groove 430;

[0057] Two reinforcing sealing structures 420 are respectively distributed in two side grooves 450, and the dimensions of the reinforcing sealing structures 420 and the stepped sealing grooves 411 are matched.

[0058] In summary, during the assembly process between the composite slab body 100 and the wall 300 via the connector 200, the convex structure 410 inserts into the groove 430. The two reinforcing sealing structures 420 inside the two side grooves 450 are staggered from both sides of the convex structure 410, sequentially matching the dimensions of the multi-level sealing grooves, and then fitting and sealing onto the convex structure 410. This achieves a multi-level sealing effect in localized areas by utilizing the two side grooves 450 and the two reinforcing sealing structures 420, based on the overall sealing of the convex structure 410 and the groove 430. This completes the efficient and precise sealing and seepage prevention of the sealing and seepage prevention component 400 from overall to localized and from single-level to multi-level staggered layers, fundamentally blocking the leakage channel and preventing water from seeping out of the concrete and contaminating the wall. This method achieves true seepage prevention while also avoiding excessive localized water loss in the concrete, which could affect the hydration reaction and final strength of the concrete.

[0059] In this embodiment of the utility model, please refer to Figure 4 A liquid collection tank 440 is provided at the bottom of the groove 430. The liquid collection tank 440 is connected to the bottom of the groove 430 and is used to prevent leakage caused by partial failure of the sealing and anti-leakage component 400.

[0060] Therefore, based on the overall seal, the convex structure 410 and the groove 430 are interspersed, and two side grooves 450 and two reinforced sealing structures 420 are used to further achieve multi-level sealing in local areas. Then, the liquid collection tank 440 is used to prevent leakage caused by partial failure of the sealing and anti-leakage component 400.

[0061] In this embodiment of the utility model, please refer to Figure 1 The connector 200 includes:

[0062] L-shaped plate;

[0063] Multiple reinforcing ribs are distributed in an array on the L-shaped plate, and the reinforcing ribs are used to enhance the supporting force of the L-shaped plate.

[0064] Multiple mounting bolts are used to assemble the L-shaped plate onto the wall 300.

[0065] In this embodiment of the utility model, please refer to Figures 4-6The reinforced sealing structure 420 includes:

[0066] The telescopic sealing body 421 is slidably assembled inside the side groove 450. A rubber gasket is sleeved on the outside of the telescopic sealing body 421 and elastically connected inside the side groove 450 by the rubber gasket. The rubber gasket is used to seal and move the telescopic sealing body 421 and the side groove 450 through and through.

[0067] The abutment 422 is movably inserted into the side wall of the side groove 450, and the degree of insertion into the side wall of the side groove 450 is controlled by bolts.

[0068] For further details, please refer to Figure 5 The telescopic sealing body 421 includes:

[0069] Sealing block 4211;

[0070] A sealing frame A4212 is movably fitted outside the sealing block 4211;

[0071] Sealing frame B4213 is movably sleeved outside sealing frame A4212.

[0072] Please see Figure 5 The sealing block 4211 and the sealing frame A4212, as well as the sealing frame A4212 and the sealing frame B4213, are connected by rubber rings; the rubber rings are used to seal and move through the sealing block 4211 and the sealing frame A4212, as well as the sealing frame A4212 and the sealing frame B4213.

[0073] Please see Figure 5 The sealing block 4211 is provided with an anti-detachment protrusion A on the outside, which is used to prevent the sealing frame A4212 from falling off the sealing block 4211; the sealing frame A4212 is provided with an anti-detachment protrusion B on the outside, which is used to prevent the sealing frame B4213 from falling off the sealing frame A4212.

[0074] Please see Figures 5-7 The abutment 422 includes:

[0075] Abutting plate 4221, one end of which is movably inserted into the bottom of the side groove 450, and the other end abutting against the sealing block 4211;

[0076] A wedge-shaped surface 4222 is formed on the abutment plate 4221;

[0077] Multiple push plates 4223 are movably inserted into the side wall of the side groove 450; the multiple push plates 4223 are distributed in an array along the abutment plate 4221;

[0078] Multiple wedge blocks 4224 are provided, and the multiple wedge blocks 4224 correspond one-to-one with multiple push plates 4223; the wedge blocks 4224 are integrally fixed to the end of the push plates 4223; the side of the wedge blocks 4224 away from the push plates 4223 abuts against the wedge surface 4222.

[0079] Multiple bolts are provided, all threaded through the connector 200; the ends of the bolts abut against the push plate 4223, and through the rotation of the bolt threads, they enter the side groove 450 and push the push plate 4223 and the wedge block 4224 upward, thus completing the degree to which the abutment plate 4221 abuts against and pushes the sealing block 4211 by controlling the bolts.

[0080] In summary, rotating the bolt causes its thread to penetrate into the side groove 450, pushing the push plate 4223 and wedge block 4224 upward. The wedge block 4224 and wedge surface 4222 cooperate to push the abutment plate 4221, causing the abutment plate 4221 to abut against the sealing block 4211. This completes the ejection of the sealing block 4211 from the sealing frame A4212 and the ejection of the sealing frame A4212 from the sealing frame B4213, achieving further multi-level sealing of the enhanced sealing structure 420 in localized areas on the multi-level sealing groove.

[0081] In this embodiment of the present invention, based on the overall sealing achieved by the convex structure 410 and the groove 430, two side grooves 450 on both sides of its interior and two built-in reinforcing sealing structures 420 are further used to perform staggered and progressive sealing from both sides of the convex structure; these reinforcing sealing structures 420 can accurately match and fit onto the multi-level sealing grooves preset on the side of the convex structure 410; this sealing method of "from whole to part" and "from single level to multi-level" achieves efficient and precise sealing of potential leakage paths, especially capillary permeation paths.

[0082] The reinforced sealing structure 420 is not static but can be dynamically activated during construction. Specifically, by tightening a specific bolt, the bolt is threaded into the side groove 450, driving the push plate 4223 and wedge block 4224 inside to move upward. Utilizing the principle of inclined planes, the wedge block 4224 interacts with the fixed wedge surface 4222, generating a lateral expansion force that continuously pushes the abutment plate 4221. The abutment plate 4221 then pushes the sealing block 4211 out of the sealing frame A4212, while simultaneously pushing the sealing frame A4212 out of the sealing frame B4213. This ingenious mechanical linkage enables the sealing element to expand and compress in a step-by-step and controllable manner, ensuring a tight multi-level seal even at complex local joints.

[0083] To address extreme conditions or potential partial failure of seals over time, a collection tank 440 is integrated. This collection tank 440 acts as a preventative "safety valve," collecting minute amounts of water that may penetrate due to extreme pressure or minor seal failure and directing it to a pre-designed drainage system, thereby completely preventing its infiltration into the wall or concrete.

[0084] Traditional pre-compression sealing strips may be at risk of stress relaxation after long-term use. However, this invention dynamically applies sealing pressure through a bolt-driven wedge mechanism, which not only achieves initial precision sealing, but more importantly, it allows for pressure compensation during construction, commissioning, or future maintenance. This design enables the sealing system to adapt to minor deformations and settlements of the joint to a certain extent, and even compensate for slight wear of the sealing material itself, achieving "adaptive sealing," a long-term reliable performance that is difficult to achieve with static sealing structures.

[0085] By combining the liquid collection tank 440 with the multi-stage active seal, a synergistic effect of multiple safeguards is created. Conventional designs either only block or only drain; in this structure, the multi-stage seal acts as the main force, undertaking the vast majority of the seepage prevention task and fundamentally blocking water leakage; while the liquid collection tank serves as the final, preventative barrier. This division of labor means that even if the multi-stage seal at the front end experiences extremely minor failure (not complete failure) under extreme conditions, the system as a whole can still guarantee no leakage. This design concept upgrades from "preventing leakage" to "tolerating minor failures without affecting overall functionality," greatly improving the reliability and durability of the system.

[0086] Existing technologies drain water from concrete through drainage channels, essentially creating a conflict between seepage prevention and the normal hydration and curing of concrete. This invention achieves seepage prevention through near-absolute physical blocking, completely eliminating the need to drain water from the concrete. It perfectly resolves a long-standing contradiction in engineering: ensuring that the structure is leak-proof while also guaranteeing that the concrete maintains suitable humidity within it to complete a full hydration reaction. This avoids quality problems such as decreased strength and accelerated carbonation caused by excessive local water loss, achieving a balance between seepage prevention and optimal concrete curing performance.

[0087] The adjustable bolt drive mechanism makes the sealing operation no longer a one-time process; construction workers can intuitively control the sealing pressure by controlling the amount of bolt screwing in according to the actual site conditions, ensuring that every joint can achieve the sealing state required by the design. This visualized and quantifiable construction process greatly reduces the quality fluctuations caused by differences in worker operation, resulting in higher and more stable overall construction quality.

[0088] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waterproof structure for a flat roof composite slab, comprising a connector (200) installed between the composite slab body (100) and the wall (300), wherein the composite slab body (100) and the wall (300) are positioned by a plurality of positioning rods (110); characterized in that, The connector (200) and the composite plate body (100) are sealed and leak-proof by a plurality of sealing and leak-proof components (400), the sealing and leak-proof components (400) including: A convex structure (410) is integrally fixed on the composite plate body (100); the convex structure (410) includes a convex body and two stepped sealing grooves (411) opened on both sides of the convex body; the stepped sealing grooves (411) include multi-level sealing grooves. A groove (430) is formed on the connector (200), and the size of the groove (430) matches the size of the protrusion structure (410); Two side grooves (450) are formed on the connectors (200) on both sides of the groove (430); Two reinforced sealing structures (420) are distributed in two side grooves (450), and the dimensions of the reinforced sealing structures (420) are matched with those of the stepped sealing grooves (411).

2. The anti-leakage structure for composite slab roofing according to claim 1, characterized in that, A liquid collection tank (440) is provided at the bottom of the groove (430). The liquid collection tank (440) is connected to the bottom of the groove (430). The liquid collection tank (440) is used to prevent leakage caused by partial failure of the sealing and anti-leakage component (400).

3. The anti-leakage structure for composite slab roofing according to claim 1, characterized in that, The connector (200) includes: L-shaped plate; Multiple reinforcing ribs are distributed in an array on the L-shaped plate, and the reinforcing ribs are used to enhance the supporting force of the L-shaped plate. Multiple mounting bolts are used to assemble the L-shaped plate onto the wall (300).

4. The anti-leakage structure for composite slab roofing according to claim 1, characterized in that, The reinforced sealing structure (420) includes: The telescopic sealing body (421) is slidably assembled inside the side groove (450). A rubber pad is sleeved on the outside of the telescopic sealing body (421) and elastically connected inside the side groove (450) by the rubber pad. The rubber pad is used to seal and move the telescopic sealing body (421) and the side groove (450) in a movable and interlocking manner. Abutting body (422) is movably inserted into the side wall of the side groove (450), and the degree of insertion into the side wall of the side groove (450) is controlled by bolts.

5. The anti-leakage structure for composite slab roofing according to claim 4, characterized in that, The telescopic seal (421) includes: Sealing block (4211); A sealing frame A (4212) is movably fitted outside the sealing block (4211); Sealing frame B (4213) is movably fitted outside sealing frame A (4212).

6. The anti-leakage structure for composite slab roofing according to claim 5, characterized in that, The sealing block (4211) and sealing frame A (4212), as well as the sealing frame A (4212) and sealing frame B (4213) are connected by rubber rings; the rubber rings are used to seal and move through the sealing block (4211) and sealing frame A (4212), as well as the sealing frame A (4212) and sealing frame B (4213).

7. The anti-leakage structure for composite slab roofing according to claim 6, characterized in that, The sealing block (4211) is provided with an anti-detachment protrusion A on the outside, which is used to prevent the sealing frame A (4212) from falling off the sealing block (4211); the sealing frame A (4212) is provided with an anti-detachment protrusion B on the outside, which is used to prevent the sealing frame B (4213) from falling off the sealing frame A (4212).

8. The anti-leakage structure for composite slab roofing according to claim 5, characterized in that, The abutment (422) includes: Abutting plate (4221), one end of which is movably inserted into the bottom of the side groove (450), and the other end abutting against the sealing block (4211); A wedge-shaped surface (4222) is formed on the abutment plate (4221); Multiple push plates (4223) are movably inserted into the side wall of the side groove (450); the multiple push plates (4223) are distributed in an array along the abutment plate (4221); Multiple wedge blocks (4224) are provided, and the multiple wedge blocks (4224) correspond one-to-one with multiple push plates (4223); the wedge blocks (4224) are integrally fixed to the end of the push plates (4223); the side of the wedge blocks (4224) away from the push plates (4223) abuts against the wedge surface (4222).

9. A waterproof structure for composite slab roofing according to claim 8, characterized in that, Multiple bolts are provided, all threaded through the connector (200); the ends of the bolts abut against the push plate (4223), and through the rotation of the bolt threads, they enter the side groove (450) and push the push plate (4223) and the wedge block (4224) upward, thus completing the degree to which the abutment plate (4221) abuts against and pushes the sealing block (4211) by controlling the bolts.

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