Waterproof structure for cable penetrating concrete wall
By adopting multiple waterproof sealing and isolation methods in the waterproof structure where the cable passes through the wall, the water seepage problem caused by separation after the fire sludge is softened, and efficient waterproof sealing between the cable and the waterproof casing and the concrete wall is achieved, meeting the requirements of water leakage.
Patent Information
- Application Number
- CN202421163034.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-05-27
AI Technical Summary
In the existing waterproof structure where cables pass through the wall, the fire-proof mud softens when exposed to water, resulting in gaps between the cable and the embedded waterproof casing, or gaps between the embedded waterproof casing and the concrete wall, resulting in water seepage.
A structure of waterproof sealing and isolation is adopted, including setting up a water-expanded rubber water stop strip on the water-to-water side of the water-stop ring of the rigid waterproof casing, applying waterproof sealant at the junction of the casing and the concrete wall, and setting a waterproof protective layer on the outside, filling asphalt hemp silk between the cable and the casing, and sealing fire-proof blocking materials at both ends of the casing.
The waterproof seal between the cable, waterproof casing and concrete wall is enhanced, which avoids water seepage and meets the requirement of water leakage after the wall passes through the cable. At the same time, the structure is simple, the cost is low, and the waterproof effect is significant.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building engineering, in particular to a waterproof structure for cables to pass through concrete walls, which is used for waterproofing flexible structures such as cables passing through rigid concrete walls. Background Art
[0002] Most traditional cable penetration methods use waterproof concrete walls in combination with pre-buried waterproof casings. The cables pass through rigid structures such as concrete walls through pre-buried waterproof casings. To meet the waterproof requirements of the walls, fire-retardant putty is filled between the pre-buried waterproof casings and the cables.
[0003] In the existing waterproof structure of cables passing through walls, gaps often appear between the cable and the pre-buried waterproof casing due to the separation of fireproof mortar after softening in water, or gaps appear between the semi-rigid or rigid pre-buried waterproof casing and the concrete wall, causing water to slowly penetrate. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a waterproof structure for a cable passing through a concrete wall, which adopts multiple waterproof seals and isolations to enhance waterproof nodes, thereby strengthening the waterproof seal between the cable and the rigid wall sleeve and between the rigid wall sleeve and the concrete wall, and can meet the requirement of no water seepage after the cable passes through the wall.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0006] A waterproof structure for a cable passing through a concrete wall, comprising a rigid waterproof casing pre-buried in the concrete wall, a circle of water-swellable rubber waterstop strip being arranged on the water-facing side of the waterstop ring of the rigid waterproof casing; the rigid waterproof casing extends out of the water-facing side of the concrete wall for a certain length, and a circle of waterproof sealant is applied at the junction of the rigid waterproof casing and the concrete wall; a waterproof protective layer is arranged on the outside of the waterproof sealant; after the cable is laid through the rigid waterproof casing, asphalt hemp is filled between the cable and the rigid waterproof casing and at the center of the concrete wall, and fireproof plugging materials are sealed at both ends of the rigid waterproof casing; and both parts between the fireproof plugging material and the asphalt hemp are filled with plugging materials.
[0007] A further improvement of the technical solution of the utility model is that: the waterproof protective layer is respectively laid with a waterproof layer, a first protective layer and a second protective layer from the inside to the outside.
[0008] A further improvement of the technical solution of the utility model is that: the waterproof layer is set as two layers of modified asphalt waterproof membrane; the first protective layer is set as a polystyrene foam plastic board; the second protective layer is set as waterproof mortar.
[0009] The further improvement of the technical solution of the utility model is that: the thickness of each layer of the modified asphalt waterproofing coiled material is set to 3-5mm; the thickness of the polystyrene foam plastic board is set to 50-55mm; the thickness of the waterproof mortar is set to 20-25mm.
[0010] A further improvement of the technical solution of the utility model is that the waterproof protective layer is arranged on the water-facing side of the wall and on the outer periphery of the rigid waterproof sleeve.
[0011] A further improvement of the technical solution of the utility model is that the length of the waterproof protective layer on the water-facing side of the wall and the outer periphery of the rigid waterproof casing is set to be no less than 0.5m.
[0012] A further improvement of the technical solution of the utility model is that the blocking depth of the fireproof blocking material is set to 30 mm.
[0013] A further improvement of the technical solution of the utility model is that after the cable is laid through the rigid waterproof casing, fire retardant paint is applied to the cables on both sides of the rigid waterproof casing.
[0014] A further improvement of the technical solution of the utility model is that the thickness of the fire retardant coating is ≥1.0 mm, and the length of the fire retardant coating is ≥1.5 m.
[0015] Due to the adoption of the above technical solution, the technical progress achieved by the utility model is:
[0016] 1. The utility model arranges a circle of water-swelling rubber waterstop strip on the water-facing side of the rigid waterproof casing waterstop ring, applies a circle of waterproof sealant at the junction of the rigid waterproof casing and the concrete wall, arranges a waterproof protective layer on the outside of the waterproof sealant, fills the center of the concrete wall between the cable and the rigid waterproof casing with asphalt hemp, seals both ends of the rigid waterproof casing with fireproof plugging materials, and fills the two parts between the fireproof plugging materials and the asphalt hemp with sealing materials, thereby achieving multiple waterproof sealing and isolation, strengthening the waterproof nodes, and can strengthen the waterproof sealing between the cable and the rigid wall casing and the rigid wall casing and the concrete wall. It is suitable for waterproof isolation sealing at the intersection of a flexible body and a rigid body, and can meet the requirement of no water seepage after the cable is passed through the wall.
[0017] 2. The waterproof structure for cables passing through concrete walls provided by the utility model has a simple structure, low cost and significant waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor;
[0019] Figure 1 It is a schematic diagram of a waterproof structure of a cable passing through a concrete wall provided in an embodiment of the utility model;
[0020] Among them, 1. Concrete wall; 1-1. Water-facing side of the wall; 2. Rigid waterproof casing; 3. Cable; 4. Waterproof sealant; 5. Water-swelling rubber waterstop; 6. Asphalt hemp; 7. Sealing materials; 8. Waterproof layer; 9. First protective layer; 10. Second protective layer; 11. Fireproof plugging materials. DETAILED DESCRIPTION
[0021] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0024] The present invention is further described in detail below with reference to the accompanying drawings and embodiments:
[0025] like Figure 1 As shown, a waterproof structure for a cable passing through a concrete wall comprises a rigid waterproof casing 2 pre-buried in the concrete wall 1, a circle of water-swellable rubber waterstop strip 5 is arranged on the water-facing side of the waterstop ring of the rigid waterproof casing 2; the rigid waterproof casing 2 extends out of the water-facing side 1-1 of the concrete wall 1 for a certain length, and a circle of waterproof sealant 4 is applied at the junction of the rigid waterproof casing 2 and the concrete wall 1; a waterproof protective layer is arranged on the outside of the waterproof sealant 4; after the cable 3 is laid through the rigid waterproof casing 2, asphalt hemp 6 is filled between the cable 3 and the rigid waterproof casing 2 and at the center of the concrete wall 1, and fireproof plugging materials 11 are sealed at both ends of the rigid waterproof casing 2; and the two parts between the fireproof plugging material 11 and the asphalt hemp 6 are filled with sealing materials 7.
[0026] Furthermore, the waterproof protective layer 8, the first protective layer 9 and the second protective layer 10 are sequentially laid from the inside to the outside.
[0027] Furthermore, the waterproof layer 8 is configured as two layers of modified asphalt waterproof membrane; the first protective layer 9 is configured as a polystyrene foam board; and the second protective layer 10 is configured as waterproof mortar.
[0028] Furthermore, the thickness of each layer of the modified asphalt waterproofing membrane is set to 3-5 mm; the thickness of the polystyrene foam board is set to 50-55 mm; and the thickness of the waterproof mortar is set to 20-25 mm.
[0029] Furthermore, a waterproof protective layer is arranged on the water-facing side 1 - 1 of the wall and on the outer periphery of the rigid waterproof sleeve 2 .
[0030] Furthermore, the length of the waterproof protective layer on the water-facing side 1-1 of the wall and the outer periphery of the rigid waterproof sleeve 2 is set to be no less than 0.5m.
[0031] Furthermore, the sealing depth of the fireproof blocking material 11 is set to 30 mm.
[0032] Furthermore, after the cable 3 is laid through the rigid waterproof casing 2 , fire retardant paint is applied on the cable 3 on both sides of the rigid waterproof casing 2 .
[0033] Furthermore, the thickness of the fire retardant coating is ≥1.0mm, and the length of the fire retardant coating is ≥1.5m.
[0034] A waterproof structure for cables passing through concrete walls, the specific implementation process is as follows:
[0035] (1) A rigid waterproof casing 2 is embedded in the concrete wall 1, and a circle of water-swellable rubber water-stop strip 5 (or water-swellable rubber water-stop glue) is attached to the water-facing side of the water-stop ring of the rigid waterproof casing 2;
[0036] (2) The rigid waterproof casing 2 extends a certain length from the water-facing side 1-1 of the concrete wall 1, a circle of waterproof sealant 4 is applied at the junction of the two, and two layers of 3-5 mm thick modified asphalt waterproof membrane (waterproof layer 8, the second layer is the waterproof reinforcement layer), 50-55 mm thick polystyrene foam board (first protective layer 9) and 20-25 mm thick waterproof mortar (second protective layer 10) are laid from the inside to the outside. The above waterproof layer 8, the first protective layer 9 and the second protective layer 10 extend for a certain distance (not less than 0.5 m) to increase the water seepage path;
[0037] (3) After the cable 3 is laid through the pre-buried rigid waterproof casing 2, asphalt hemp 6 is filled between the cable 3 and the rigid waterproof casing 2 at the center of the concrete wall 1 to play a waterproof isolation role. The two ends of the rigid waterproof casing 2 are respectively sealed with fireproof plugging materials 11 (such as fireproof putty, etc.). The two parts between the fireproof plugging material 11 and the asphalt hemp 6 (the left and right parts of the asphalt hemp 6) need to be filled with sealing materials 7 (asbestos cement or soft putty) according to the requirements of waterproofing and fire prevention.
[0038] (4) Use fire-retardant plugging material 11 to seal the gap between the cables 3 at both ends and the rigid waterproof casing 2, with a sealing depth of 30 mm; apply fire-retardant paint on the cables 3 on both sides of the rigid waterproof casing 2, with the thickness of the fire-retardant paint ≥1.0 mm and the length of the fire-retardant paint section ≥1.5 m.
[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A waterproof structure for a cable passing through a concrete wall, comprising a rigid waterproof casing (2) pre-buried through the concrete wall (1), characterized in that: A circle of water-swellable rubber water-stop strip (5) is arranged on the water-facing side of the water-stop ring of the rigid waterproof casing (2); the rigid waterproof casing (2) extends out of the water-facing side (1-1) of the concrete wall (1) for a certain length, and a circle of waterproof sealant (4) is applied at the junction between the rigid waterproof casing (2) and the concrete wall (1); a waterproof protective layer is arranged on the outside of the waterproof sealant (4); after the cable (3) is laid through the rigid waterproof casing (2), asphalt hemp (6) is filled between the cable (3) and the rigid waterproof casing (2) and at the center of the concrete wall (1), and fireproof plugging material (11) is sealed at both ends of the rigid waterproof casing (2); and both parts between the fireproof plugging material (11) and the asphalt hemp (6) are filled with plugging material (7).
2. A waterproof structure for cables passing through concrete walls according to claim 1, characterized in that: The waterproof protective layer is respectively provided with a waterproof layer (8), a first protective layer (9) and a second protective layer (10) from the inside to the outside.
3. A waterproof structure for cables passing through concrete walls according to claim 2, characterized in that: The waterproof layer (8) is configured as two layers of modified asphalt waterproofing coiled material; the first protective layer (9) is configured as a polystyrene foam plastic board; and the second protective layer (10) is configured as waterproof mortar.
4. A waterproof structure for cables passing through concrete walls according to claim 3, characterized in that: The thickness of each layer of the modified asphalt waterproofing coiled material is set to 3-5 mm; the thickness of the polystyrene foam plastic board is set to 50-55 mm; and the thickness of the waterproof mortar is set to 20-25 mm.
5. The waterproof structure for cables passing through concrete walls according to claim 1 is characterized in that: The waterproof protective layer is arranged on the water-facing side (1-1) of the wall and on the outer periphery of the rigid waterproof sleeve (2).
6. A waterproof structure for cables passing through concrete walls according to claim 5, characterized in that: The length of the waterproof protective layer on the water-facing side (1-1) of the wall and the outer circumference of the rigid waterproof sleeve (2) is set to be no less than 0.5 m.
7. A waterproof structure for cables passing through concrete walls according to claim 1, characterized in that: The sealing depth of the fireproof blocking material (11) is set to 30 mm.
8. The waterproof structure for cables passing through concrete walls according to claim 1 is characterized in that: After the cable (3) is laid through the rigid waterproof casing (2), fire retardant paint is applied to the cable (3) on both sides of the rigid waterproof casing (2).
9. A waterproof structure for cables passing through concrete walls according to claim 8, characterized in that: The thickness of the fire retardant coating is ≥1.0mm, and the length of the fire retardant coating is ≥1.5m.