A waterproof sleeve

Abstract

This utility model relates to the field of waterproof sleeve technology, and discloses a waterproof sleeve and its installation method. The sleeve includes a sleeve body for through-installation on a structural slab. A first partition and a second partition are sequentially spaced along the sleeve's axial direction to divide the sleeve body into a first cavity, a second cavity, and a third cavity. The first cavity is filled with a first rigid sealing material, the second cavity with a flexible sealing material, and the third cavity with a second rigid sealing material. A pipeline is installed within the sleeve body, passing sequentially through the first, second, and third cavities. The sleeve body is made of UHPC, and its outer wall, after wear, forms a rough surface with uneven texture. The sleeve body is fixed to the structural slab by concrete pouring. This waterproof sleeve and its installation method significantly improve the long-term waterproof performance and service life of the waterproof sleeve.

Description

Technical Field

[0001] This utility model relates to the field of waterproof sleeve technology, and in particular to a waterproof sleeve and its installation method. Background Technology

[0002] In building construction, when various pipelines such as water, electricity, and HVAC lines pass through walls, floors, or water tanks, waterproof sleeves are generally embedded in the structural slabs to accommodate and fix the pipelines while ensuring the waterproof sealing performance of the building structure. Currently, the commonly used waterproof sleeves in engineering mainly include two categories: steel sleeves and plastic sleeves. Due to the existence of a certain gap between the waterproof sleeve and the concrete, and the significant difference in material properties between the waterproof sleeve and the concrete, it is difficult to achieve a complete seal. The waterproofing mechanism mainly relies on the wing ring set on the outside of the waterproof sleeve, and the sealing materials such as asphalt hemp fibers and sealant filled between the waterproof sleeve and the pipeline.

[0003] However, during long-term use, existing waterproof sleeves may experience several issues. First, gaps may appear at the interface between the flange and the concrete due to differences in material shrinkage, vibration, or minor displacement, leading to water seepage along these gaps. Furthermore, the sleeve itself is susceptible to corrosion from environmental media or may become a seepage channel due to material aging. Second, the sealing material between the waterproof sleeve and the pipeline has limited density and strength. Under prolonged immersion in water, asphalt hemp fibers or grease can easily be washed away, causing water to seep into the inside of the sleeve. Utility Model Content

[0004] The purpose of this utility model is to provide a waterproof sleeve and its installation method to solve the problem that the waterproof effect of the existing waterproof sleeve will decrease or even fail after long-term use.

[0005] To achieve the above objectives, this utility model provides a waterproof sleeve, including a sleeve body, which is used for through-mounting on a structural plate. The casing is provided with a first partition and a second partition at intervals along its own axial direction to divide the casing into a first cavity, a second cavity and a third cavity. The first cavity is filled with a first rigid sealing material, the second cavity is filled with a flexible sealing material, and the third cavity is filled with a second rigid sealing material. The casing is used to install pipelines, which pass through the first cavity, the second cavity, and the third cavity in sequence. The casing is made of UHPC, and its outer wall is worn to form a rough surface with uneven texture; the casing is fixed to the structural plate by concrete pouring.

[0006] In some embodiments of this application, the casing includes a buried pipe section, a water-facing pipe section, and a water-returning pipe section. The buried pipe section is used to be buried in the structural plate. One end of the buried pipe section is the water-facing end, and the other end of the buried pipe section is the water-returning end. The outer wall of the buried pipe section forms a rough surface with uneven texture after being worn. The water-facing pipe section is connected to the water-facing end of the buried pipe section, and the water-facing pipe section is used to protrude from the water-facing surface of the structural plate. The backwater pipe section is connected to the backwater end of the buried pipe section, and the backwater pipe section is used to protrude from the backwater surface of the structural plate.

[0007] In some embodiments of this application, the outer wall of the buried pipe section is provided with at least one wing ring, each wing ring is made of UHPC material, and the outer surface of each wing ring is worn to form a rough surface with uneven texture.

[0008] In some embodiments of this application, the outer wall of the sleeve body has a number of first fibers after wear.

[0009] In some embodiments of this application, the first partition is fixedly connected to the inner wall of the sleeve body, and the first partition is provided with a plurality of first reserved holes.

[0010] In some embodiments of this application, the second partition is detachably connected to the inner wall of the sleeve body, and the second partition is provided with a plurality of second reserved holes, which are configured one-to-one with a plurality of first reserved holes.

[0011] In some embodiments of this application, a bottom cover is detachably installed at one end of the sleeve body near the first cavity, and a plurality of third reserved holes are provided on the bottom cover, with the plurality of third reserved holes corresponding one-to-one with the plurality of first reserved holes; A top cover is detachably installed at one end of the sleeve body near the third cavity. The top cover has multiple fourth reserved holes, which correspond one-to-one with the multiple first reserved holes.

[0012] This utility model also provides a method for installing a waterproof sleeve, including the following steps: S1, Arrange the casing on the structural steel reinforcement of the structural slab, so that part of the casing protrudes from the water-facing side of the structural slab, and fix the casing to the structural steel reinforcement. S2, Install concrete formwork, pour concrete, and remove formwork after concrete curing to form the structural slab; S3, A waterproof layer is installed on the water-facing side of the structural slab, and a waterproof layer is installed on the outer wall of the sleeve protruding from the water-facing side of the structural slab. S4, insert the pipeline into the casing, fill the first cavity with the first rigid sealing material, fill the second cavity with the flexible sealing material, and fill the third cavity with the second rigid sealing material.

[0013] In some embodiments of this application, in step S1, the sleeve body is arranged laterally on the structural steel bars of the structural slab, so that part of the sleeve body protrudes from the water-facing side of the structural slab, the structural steel bars support the sleeve body, and the sleeve body is tied and fixed to the structural steel bars using binding steel bars.

[0014] In some embodiments of this application, in step S1, the casing is arranged longitudinally on the structural steel bars of the structural slab, so that part of the casing protrudes from the water-facing side of the structural slab. At least two lapped steel bars are provided below the wing ring on the outer wall of the casing. The lapped steel bars support the casing and are tied to the structural steel bars with binding steel bars.

[0015] Compared with existing technologies, the waterproof sleeve and its installation method of this utility model have the following advantages: Firstly, the waterproof sleeve and the main structure are tightly integrated through pouring to form a whole. The hydration reaction of cement in the concrete ensures a tight connection, turning the original weak points in waterproofing into reinforced points. Simultaneously, the ultra-high strength, excellent durability, and corrosion resistance of UHPC prevent the sleeve's own material properties from deteriorating and becoming a seepage channel, ensuring that the waterproof sleeve and the main structure have the same lifespan, allowing the waterproof sleeve to stably perform its waterproofing function throughout its entire life cycle. Secondly, by setting a rigid-flexible-rigid three-layer waterproof structure inside the waterproof sleeve, multiple waterproof barriers are formed. This combination of rigidity and flexibility overcomes the shortcomings of poor internal waterproofing durability in traditional waterproof sleeves. While improving waterproofing performance, the protection of the flexible sealing material further enhances waterproofing durability. Thus, the waterproof sleeve of this utility model embodiment has been comprehensively optimized in terms of structure and materials through the use of UHPC material, the combination of rough outer wall and structural plate, and the combination of multi-cavity structure and rigid-flexible sealing material. It effectively solves the problem of the waterproof effect of existing waterproof sleeves declining or even failing after long-term use, and significantly improves the long-term waterproof performance and service life of the waterproof sleeve. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the waterproof sleeve according to an embodiment of this utility model.

[0017] Figure 2 This is a schematic diagram of the waterproof sleeve in the pre-installed configuration of this utility model embodiment.

[0018] Figure 3 This is a schematic diagram of the waterproof sleeve in the sealing process according to an embodiment of this utility model.

[0019] Figure 4 This is a structural schematic diagram of the waterproof sleeve in an embodiment of the present invention during sealing, from another perspective.

[0020] Figure 5 This is a schematic diagram of the structure after the waterproof sleeve is sealed according to an embodiment of this utility model.

[0021] In the diagram, 1. Sleeve body; 11. Backwater pipe section; 12. Buried pipe section; 13. Frontwater pipe section; 14. Wing ring; 15. First fiber; 21. First cavity; 22. Second cavity; 23. Third cavity; 31. Bottom cover; 311. First injection hole; 32. First partition; 33. Second partition; 34. Top cover; 341. Second injection hole; 4. Structural slab; 41. Structural reinforcement; 42. Lap reinforcement; 5. Waterproof layer; 6. Pipeline. Detailed Implementation

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms; these terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0024] like Figures 1-5 As shown, a waterproof sleeve according to an embodiment of the present invention includes a sleeve body 1, which is used to be installed through the structural plate 4.

[0025] The casing 1 is provided with a first partition 32 and a second partition 33 arranged sequentially along its own axial direction to divide the casing 1 into a first cavity 21, a second cavity 22 and a third cavity 23. The first cavity 21 is filled with a first rigid sealing material, the second cavity 22 is filled with a flexible sealing material, and the third cavity 23 is filled with a second rigid sealing material.

[0026] The casing 1 is used to install the pipeline 6, which passes through the first cavity 21, the second cavity 22 and the third cavity 23 in sequence.

[0027] Preferably, the first rigid sealing material and the second rigid sealing material are the same, and both the first rigid sealing material and the second rigid sealing material are mortar; the flexible sealing material is a non-curing rubber asphalt waterproof coating, which has long-term adhesion and self-sealing properties.

[0028] Specifically, the inner wall of the sleeve body 1 facing the first cavity 21 is roughened to form a textured surface for bonding with the first rigid sealing material; the inner wall of the sleeve body 1 facing the third cavity 23 is also roughened to form a textured surface for bonding with the second rigid sealing material. The roughened surface enhances the adhesion to the rigid sealing material, and the rigid sealing material itself has high strength, good density, and strong erosion resistance, effectively resisting the erosion caused by long-term immersion in water, preventing the loss of flexible sealing material, and avoiding aging caused by contact with air, thus extending the service life of the sealing material.

[0029] The second cavity 22 in the middle is filled with flexible sealing material. The flexible sealing material can bond and fully seal the gaps between the pipelines 6, while adapting to the slight displacement of the pipelines 6 and the waterproof sleeve caused by thermal expansion and contraction, vibration, etc., so as to maintain a good sealing effect under dynamic conditions.

[0030] Thus, the waterproof sleeve of this utility model forms multiple waterproof barriers by setting a rigid-flexible-rigid three-layer waterproof structure inside the waterproof sleeve. This waterproof measure, which combines rigidity and flexibility, overcomes the defect of poor waterproof durability inside traditional waterproof sleeves. While improving waterproof performance, it also improves waterproof durability by protecting the flexible sealing material.

[0031] The casing body 1 is made of UHPC, which creates a rough surface with uneven texture on the outer wall of the casing body 1 after wear; the casing body 1 is fixed to the structural plate 4 by concrete pouring.

[0032] It should be noted that ultra-high performance concrete (UHPC), as a new type of building material, is widely used in structural components under special working conditions due to its ultra-high strength, excellent durability, and corrosion resistance. Currently, structural shells made of UHPC mainly utilize their structural properties to provide structural support and durable corrosion protection; there is no technology yet to apply UHPC to pre-embedded waterproof sleeves.

[0033] The outer wall of the casing 1 is roughened to form a textured surface, which can significantly increase the contact area and friction between the casing and the post-poured concrete, improve the bonding strength between the casing and the post-poured concrete, and ensure a tighter and more uniform bond between the casing and the post-poured concrete. This avoids gaps caused by insufficient bonding between the two, thereby blocking the path of water leakage between the waterproof casing and the concrete. It replaces the single sealing function of the traditional wing ring and has stronger sealing reliability.

[0034] In existing technologies, steel sleeves are susceptible to corrosion from environmental media, leading to rust and damage, which in turn compromises their sealing performance with surrounding structures. Plastic sleeves, on the other hand, shrink and crack due to temperature changes and aging, similarly causing a gradual decline in waterproofing effectiveness and making it difficult to meet the long-term waterproofing requirements of projects. Therefore, the lifespan of existing waterproof sleeves is generally 20 years, while the lifespan of the main structure is generally 50 years. This mismatch between the lifespan of the waterproof sleeve and the main structure necessitates the replacement of the waterproof sleeve or reinforcement of the waterproofing during its entire lifespan to ensure normal use throughout its entire lifespan.

[0035] In addition, although there are pipes made of ordinary concrete in the existing technology, ordinary concrete has low strength and insufficient density, so it is mainly used for pipe corridors and culverts in municipal and site engineering projects and cannot be used in pre-buried pipe projects.

[0036] The waterproof sleeve in this embodiment of the utility model not only tightly integrates the waterproof sleeve with the main structure through casting to form an integral whole, but also utilizes the hydration reaction of cement in concrete to ensure a tight connection, turning the original weak points in waterproofing into reinforced points; at the same time, it utilizes the ultra-high strength, excellent durability and corrosion resistance of UHPC to prevent the material properties of the sleeve itself from deteriorating and becoming a seepage channel, ensuring that the lifespan of the waterproof sleeve is consistent with that of the main structure, so that the waterproof sleeve can stably perform its waterproofing function throughout its entire life cycle.

[0037] Furthermore, with existing waterproof sleeves, the sealing material gradually peels away from the sleeve over time when not in use, leading to seepage and leakage problems. However, with the waterproof sleeve of this invention, when it is no longer in use and needs sealing, the inner wall of the sleeve body 1 only needs to be roughened to create a textured surface before concrete is poured in to seal it. The poured concrete and the sleeve body 1 will form a unified whole, and over time, due to the hydration reaction of the cement in the concrete, the connection will become increasingly tight, preventing seepage and leakage problems.

[0038] In some embodiments of this application, such as Figures 1-5As shown, the casing 1 includes a buried pipe section 12, a water-facing pipe section 13, and a water-returning pipe section 11. The buried pipe section 12 is used to be buried in the structural slab 4. One end of the buried pipe section 12 is the water-facing end, and the other end of the buried pipe section 12 is the water-returning end. The outer wall of the buried pipe section 12 is worn to form a rough surface with uneven texture, which is used to combine with the post-poured concrete to achieve integration.

[0039] The water-facing pipe section 13 is connected to the water-facing end of the buried pipe section 12. The water-facing pipe section 13 is used to protrude from the water-facing surface of the structural slab 4. The outer wall of the water-facing pipe section 13 is flat, which facilitates the application of waterproof materials and the pasting of waterproof membranes. The flat surface can ensure that the waterproof layer 5 is tightly attached to the water-facing pipe section 13, and avoid the waterproof layer 5 from having weak points due to the roughness of the outer wall of the water-facing pipe section 13.

[0040] The backwater pipe section 11 is connected to the backwater end of the buried pipe section 12, and the backwater pipe section 11 is used to protrude from the backwater surface of the structural plate 4.

[0041] Specifically, the inner wall of the buried pipe section 12 forms a second cavity 22, the inner wall of the water-facing pipe section 13 forms a third cavity 23, and the inner wall of the back-water pipe section 11 forms a first cavity 21.

[0042] In some embodiments of this application, such as Figure 1 As shown, at least one wing ring 14 is provided on the outer wall of the buried pipe section 12. The material of each wing ring 14 is UHPC, and the outer surface of each wing ring 14 is worn to form a rough surface with concave and convex textures.

[0043] The existing waterproof sleeve's flange 14 is mainly for waterproofing, while also serving a fixing function. The waterproof sleeve of this application can be integrated with the post-poured concrete through pouring, blocking the path of water leakage between the waterproof sleeve and the concrete, eliminating the need for the flange 14 for waterproofing; the flange 14 is mainly for fixing.

[0044] Specifically, when the sleeve body 1 is arranged laterally on the structural steel bars 41 of the structural slab 4, if the structural slab 4 is a side wall, the structural steel bars 41 can directly support the sleeve body 1. In this case, there is no need to set the wing ring 14. The sleeve body 1 can be directly tied and fixed to the structural steel bars 41 with the binding steel bars, which simplifies the structure and installation steps of the waterproof sleeve.

[0045] When the sleeve body 1 is arranged longitudinally on the structural steel reinforcement 41 of the structural slab 4, if the structural slab 4 is a floor slab, the structural steel reinforcement 41 cannot directly support the sleeve body 1. In this case, a wing ring 14 needs to be set, and at least two lapped steel reinforcements 42 are set below the wing ring 14. The lapped steel reinforcements 42 support the sleeve body 1, and the lapped steel reinforcements 42 are tied and fixed to the structural steel reinforcement 41 using binding steel reinforcements.

[0046] In some embodiments of this application, such as Figure 1As shown, the outer wall of the casing 1, after being worn, has several first fibers 15. The first fibers 15 are steel fibers or other high-strength fibers. After being roughened, the first fibers 15 are exposed on the outer wall of the buried pipe section 12. When the concrete is poured, it will wrap around these fibers, further enhancing the friction and bonding strength between the buried pipe section 12 and the concrete.

[0047] It should be noted that UHPC itself includes steel fibers or other high-strength fibers. When the fiber content of UHPC is low or the waterproofing requirements are low, the first fiber 15 may not be exposed.

[0048] In some embodiments of this application, such as Figures 1-5 As shown, the first partition 32 is fixedly connected to the inner wall of the sleeve body 1. The first partition 32 has multiple first reserved holes for the pipeline 6 to pass through, ensuring that the pipeline 6 can pass smoothly through the first partition 32. The first partition 32 is used to separate the first cavity 21 and the second cavity 22, and at the same time provides support and fixation for the pipeline 6.

[0049] It should be noted that the first partition 32 is located on the side with the lower pipe penetration. When the structural slab 4 is a floor slab, the first cavity 21, the second cavity 22 and the third cavity 23 are arranged sequentially from bottom to top, with the first partition 32 located on the lower side; when the structural slab 4 is a side wall, the first cavity 21, the second cavity 22 and the third cavity 23 are arranged sequentially from the outside to the inside, with the first partition 32 located on the outside side.

[0050] In some embodiments of this application, such as Figures 3-5 As shown, the second partition 33 is detachably connected to the inner wall of the sleeve body 1. The second partition 33 has multiple second reserved holes, which correspond one-to-one with the multiple first reserved holes. The second partition 33 is made of plastic or metal. The second partition 33 is used to assist in filling the flexible sealing material in the second cavity 22, so as to compact the flexible sealing material and reduce air bubbles and voids.

[0051] In some embodiments of this application, such as Figures 3-5 As shown, a bottom cover 31 is detachably installed at one end of the sleeve body 1 near the first cavity 21. The bottom cover 31 has multiple third reserved holes, which correspond one-to-one with the multiple first reserved holes. The bottom cover 31 is made of plastic or metal and is used to temporarily fix the open end of the first cavity 21.

[0052] Specifically, the bottom cover 31 is provided with a first injection hole 311 for injecting rigid sealing material into the first cavity 21; after the rigid sealing material in the first cavity 21 solidifies, the bottom cover 31 can be removed or retained.

[0053] A top cover 34 is detachably installed on one end of the sleeve body 1 near the third cavity 23. The top cover 34 has multiple fourth reserved holes, which correspond one-to-one with multiple first reserved holes. The top cover 34 is made of plastic or metal and is used to temporarily fix the open end of the third cavity 23.

[0054] Specifically, the top cover 34 is provided with a second injection hole 341 for injecting rigid sealing material into the third cavity 23; after the rigid sealing material in the third cavity 23 solidifies, the top cover 34 can be removed or retained.

[0055] This utility model embodiment also provides a method for installing a waterproof sleeve, including the following steps: S1, the sleeve body 1 is arranged on the structural steel reinforcement 41 of the structural slab 4, so that part of the sleeve body 1 protrudes from the water-facing side of the structural slab 4, and the sleeve body 1 and the structural steel reinforcement 41 are fixed.

[0056] S2, Install concrete formwork, pour concrete, and remove formwork after concrete curing to form structural slab 4.

[0057] S3, a waterproof layer 5 is provided on the water-facing side of the structural slab 4, and a waterproof layer 5 is provided on the outer wall of the sleeve 1 protruding from the water-facing side of the structural slab 4.

[0058] S4, insert the pipeline 6 into the casing 1, fill the first cavity 21 with the first rigid sealing material, fill the second cavity 22 with the flexible sealing material, and fill the third cavity 23 with the second rigid sealing material.

[0059] In some embodiments of this application, in step S1, the sleeve body 1 is arranged laterally on the structural steel bars 41 of the structural plate 4, so that the sleeve body 1 protrudes partially from the water-facing side of the structural plate 4, the structural steel bars 41 support the sleeve body 1, and the sleeve body 1 is tied and fixed to the structural steel bars 41 using binding steel bars.

[0060] In some embodiments of this application, in step S1, the sleeve body 1 is arranged longitudinally on the structural steel bars 41 of the structural plate 4, so that the sleeve body 1 protrudes from the water-facing side of the structural plate 4. At least two lapped steel bars 42 are provided below the wing ring 14 provided on the outer wall of the sleeve body 1. The lapped steel bars 42 support the sleeve body 1. The lapped steel bars 42 are tied and fixed to the structural steel bars 41 using binding steel bars.

[0061] In summary, this utility model provides a waterproof sleeve and its installation method. On the one hand, the waterproof sleeve and the main structure are tightly integrated through casting to form a whole. The hydration reaction of cement in the concrete ensures a tight connection, turning the original weak point in waterproofing into a reinforced point. At the same time, the ultra-high strength, excellent durability, and corrosion resistance of UHPC prevent the material properties of the sleeve itself from deteriorating and becoming a seepage channel, ensuring that the lifespan of the waterproof sleeve and the main structure are consistent, allowing the waterproof sleeve to stably perform its waterproofing function throughout its entire life cycle. On the other hand, by setting a rigid-flexible-rigid three-layer waterproof structure inside the waterproof sleeve, multiple waterproof barriers are formed. This combination of rigidity and flexibility overcomes the defect of poor waterproof durability inside traditional waterproof sleeves. While improving waterproof performance, the protection of the flexible sealing material further enhances waterproof durability. Thus, the waterproof sleeve of this utility model embodiment has been comprehensively optimized in terms of structure and materials through the use of UHPC material, the combination of rough outer wall and structural plate 4, and the combination of multi-cavity structure and rigid-flexible sealing material. It effectively solves the problem of the waterproof effect of existing waterproof sleeves decreasing or even failing after long-term use, and significantly improves the long-term waterproof performance and service life of the waterproof sleeve.

[0062] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A waterproof sleeve, characterized by Includes a sleeve body (1), which is used for through installation on the structural plate (4); The sleeve body (1) is provided with a first partition (32) and a second partition (33) arranged sequentially along its own axial direction to divide the sleeve body (1) into a first cavity (21), a second cavity (22) and a third cavity (23). The first cavity (21) is filled with a first rigid sealing material, the second cavity (22) is filled with a flexible sealing material, and the third cavity (23) is filled with a second rigid sealing material. The casing (1) is used to install pipelines (6), which pass through the first cavity (21), the second cavity (22) and the third cavity (23) in sequence. The casing (1) is made of UHPC, so that the outer wall of the casing (1) is worn to form a rough surface with uneven texture; the casing (1) and the structural plate (4) are fixed by concrete pouring.

2. The waterproofing sleeve of claim 1, wherein, The casing (1) includes a buried pipe section (12), a water-facing pipe section (13), and a water-returning pipe section (11). The buried pipe section (12) is used to be buried in the structural plate (4). One end of the buried pipe section (12) is the water-facing end, and the other end of the buried pipe section (12) is the water-returning end. The outer wall of the buried pipe section (12) is worn to form a rough surface with uneven texture. The water-facing pipe section (13) is connected to the water-facing end of the buried pipe section (12), and the water-facing pipe section (13) is used to protrude from the water-facing surface of the structural plate (4); The backwater pipe section (11) is connected to the backwater end of the buried pipe section (12), and the backwater pipe section (11) is used to protrude from the backwater surface of the structural plate (4).

3. The waterproofing sleeve of claim 2, wherein, The outer wall of the buried pipe section (12) is provided with at least one wing ring (14), and each wing ring (14) is made of UHPC. The outer surface of each wing ring (14) is worn to form a rough surface with concave and convex textures.

4. The waterproofing sleeve of claim 1, wherein, The outer wall of the casing (1) has several first fibers (15) after being worn.

5. The waterproofing sleeve of claim 1, wherein, The first partition (32) is fixedly connected to the inner wall of the sleeve body (1), and the first partition (32) is provided with a plurality of first reserved holes.

6. The waterproofing sleeve of claim 5, wherein, The second partition (33) is detachably connected to the inner wall of the sleeve body (1). The second partition (33) has a plurality of second reserved holes, and the plurality of second reserved holes are configured in a one-to-one correspondence with the plurality of first reserved holes.

7. The waterproofing sleeve of claim 6, wherein, The end of the sleeve body (1) near the first cavity (21) is detachably fitted with a bottom cover (31). The bottom cover (31) is provided with a plurality of third reserved holes, and the plurality of third reserved holes are provided in a one-to-one correspondence with the plurality of first reserved holes. The sleeve body (1) is detachably fitted with a top cover (34) at one end near the third cavity (23). The top cover (34) has multiple fourth reserved holes, which are configured one-to-one with the multiple first reserved holes.

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