A pre-embedded sleeve plugging structure

Abstract

The utility model discloses a kind of embedded sleeve plugging structures, it is related to embedded sleeve plugging structure field.The utility model includes building main body, abandoned sleeve is embedded in building main body, vertical reinforcing steel is arranged in the inner cavity of abandoned sleeve, the bottom end opening of abandoned sleeve is plugged with plug, and the inner cavity of abandoned sleeve is filled with the sealing slurry that the reinforcing steel is wrapped, by setting cushion layer is waterproof mortar layer and inside embedded with structural steel, coverage exceeds abandoned sleeve edge, and at the joint junction of cushion layer and building main body, expansion waterstop of butyl rubber material is arranged, wherein cushion layer and expansion waterstop form first anti-permeation defense line, solve the problem that abandoned embedded sleeve and structure joint are easily caused by waterlogging to cause water leakage under the humid environment of basement, effectively prevent water vapor from joint place infiltration.

Description

Technical Field

[0001] This utility model relates to the field of pre-embedded sleeve sealing structure, specifically a pre-embedded sleeve sealing structure. Background Technology

[0002] Pre-embedded sleeves are a key type of embedded component in building construction. They are mainly used in construction scenarios where mechanical and electrical installations, fire protection systems, or other pipelines pass through walls / slabs. Their core function is to provide a pre-set channel for later pipelines such as water pipes, cables, or ventilation ducts, ensuring the convenience of equipment installation and structural integrity. During construction, mechanical and electrical or fire protection units will pre-embed these sleeves before concrete pouring. They are usually made of metal or engineering plastics, making them integrated with the main building structure, such as the basement roof slab or walls. The design of pre-embedded sleeves must consider positional accuracy and load-bearing capacity to avoid affecting structural stability.

[0003] However, changes in building requirements during later construction phases have resulted in pre-embedded sleeves failing to meet detailed design requirements. Currently, abandoned pre-embedded sleeves are generally cut off and discarded, or sealed with end plates or plugs. However, in the humid environment of the basement, water will continuously accumulate in the cavity of the abandoned pre-embedded sleeves. Over time, the corrosion or aging of the pre-embedded sleeve profiles will cause water leakage between the abandoned pre-embedded sleeves and the structural joints. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a pre-embedded sleeve sealing structure to solve the technical problem of water accumulation in the cavity and leakage at the structural joint caused by incomplete sealing of existing abandoned pre-embedded sleeves.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pre-embedded sleeve sealing structure, comprising a building body, wherein a discarded sleeve is pre-embedded in the building body, a reinforcing steel bar is vertically arranged in the inner cavity of the discarded sleeve, a plug is sealed at the bottom opening of the discarded sleeve, and the inner cavity of the discarded sleeve is filled with a sealing slurry that wraps the reinforcing steel bar, a pad layer is covered at the top of the discarded sleeve and the adjacent surface of the building body, a structural steel bar is embedded in the pad layer, and an expansion sealing strip is provided at the joint between the pad layer and the building body.

[0006] By adopting the above technical solutions, waste sleeves are pre-embedded in the main building structure, and reinforced steel bars, plugs, and sealing grout are installed to form multiple waterproof defenses, effectively preventing groundwater infiltration, ensuring the safety and stability of the building structure, and extending its service life.

[0007] Furthermore, the reinforcing steel bar is a U-shaped steel bar, with its bent portion arranged towards the axis of the discarded sleeve.

[0008] By adopting the above technical solution, the reinforcing steel bars are constructed in a U-shape with the bent part facing the axis of the discarded casing. This effectively disperses stress, enhances the overall structural strength of the casing, prevents deformation or cracking caused by external forces or internal pressure, and improves structural stability.

[0009] Furthermore, the structural steel bars are radially distributed and embedded inside the cushion layer.

[0010] By adopting the above technical solution, the steel bars are arranged radially within the cushion layer, which can comprehensively enhance the crack resistance of the cushion layer, effectively disperse and resist the stress caused by temperature changes, foundation settlement, etc., prevent the cushion layer from cracking, and ensure the waterproof effect.

[0011] Furthermore, the plug is a metal welded sealing plate sealing plug.

[0012] By adopting the above technical solution, the plug is made of metal welded sealing plate, which has excellent sealing performance and can effectively prevent groundwater or water from entering from the bottom of the abandoned casing, providing reliable sealing protection for the inside of the casing and preventing the internal structure from being damp and corroded.

[0013] Furthermore, the sealing grout is a cement-based grouting material, which is densely filled without cavities.

[0014] By adopting the above technical solution, the sealing grout is made of cement-based grouting material, which is densely filled without cavities and can be tightly bonded to the reinforcing steel bars and the inner wall of the sleeve to form a solid waterproof layer, effectively blocking water penetration and ensuring the dryness of the structure's interior.

[0015] Furthermore, the padding layer is a waterproof mortar layer, and its coverage extends beyond the edge of the discarded sleeve.

[0016] By adopting the above technical solution, the cushion layer is a waterproof mortar layer, and the coverage extends beyond the edge of the discarded sleeve, which can fully protect the top of the sleeve and the surrounding area, prevent water from seeping in from the edge, enhance the overall waterproof effect, and ensure the safety of the building structure.

[0017] Furthermore, the expansion sealing strip is made of butyl rubber and is linearly embedded in the joint.

[0018] By adopting the above technical solution, the expansion sealing strip is made of butyl rubber and is linearly embedded in the joint. When it comes into contact with water, it expands to form a tight seal, effectively preventing water from penetrating through the joint, improving the waterproof performance of the structure, and ensuring that the interior of the building is dry.

[0019] Furthermore, the expansion sealing strip is spatially isolated from the structural steel reinforcement.

[0020] By adopting the above technical solution, the expansion waterstop strip is spatially isolated from the structural steel reinforcement, avoiding direct damage to the waterstop strip by the steel reinforcement, ensuring that the waterstop strip can effectively play its water-stopping role for a long time, improving the waterproof reliability of the structure, and extending the service life of the structure.

[0021] Furthermore, the padding layer and the sealing slurry are arranged at intervals along the vertical direction to form a layered seepage-proof structure.

[0022] By adopting the above technical solution, the bedding layer and the sealing slurry are arranged at intervals along the vertical direction to form a layered seepage prevention structure. The multiple lines of defense work together to effectively block water penetration, improve the overall waterproof performance of the structure, and ensure that the interior environment of the building is dry.

[0023] In summary, the present invention has the following main advantages:

[0024] 1. This utility model sets a waterproof mortar layer with embedded structural steel bars in the cushion layer, covering an area beyond the edge of the abandoned sleeve. An expansion waterstop strip made of butyl rubber is set at the junction of the cushion layer and the main building. The cushion layer and the expansion waterstop strip together form the first line of defense against seepage, which solves the problem of water leakage caused by water accumulation between the abandoned pre-embedded sleeve and the structural joint in the humid environment of the basement, and effectively prevents water vapor from seeping in from the joint.

[0025] 2. This utility model sets up a U-shaped structural steel bar vertically arranged inside the cavity of the abandoned sleeve and fills it with cement-based grout as a sealing slurry, ensuring a dense and cavity-free grouting. At the same time, a metal welded sealing plate is used to seal the opening at the bottom of the abandoned sleeve. The U-shaped structural steel bar enhances the integrity of the grouting material, and the sealing slurry and the sealing plate form a second dense and seepage-proof structure. This solves the problem of water accumulation in the cavity of the abandoned pre-embedded sleeve seeping downwards, causing the profile to rust or age, and thus leading to structural leakage. It ensures the tightness and durability of the seal. Attached Figure Description

[0026] Figure 1 This is a side sectional view of the present invention.

[0027] Figure 2 This is a top view of the structure of this utility model;

[0028] Figure 3 This is a partial structural diagram of the reinforcing steel bar of this utility model;

[0029] Figure 4 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0030] In the diagram: 1. Main building structure; 2. Abandoned sleeve; 3. Reinforcing steel bars; 4. Structural steel bars; 5. Plug; 6. Sealing grout; 7. Subbase; 8. Expansion stop strip. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] A pre-embedded sleeve sealing structure, such as Figure 1-4 As shown, the structure includes a main building 1, within which a discarded sleeve 2 is embedded. Reinforcing steel bars 3 are vertically installed within the inner cavity of the discarded sleeve 2. A plug 5 seals the bottom opening of the discarded sleeve 2, and the inner cavity of the discarded sleeve 2 is filled with sealing slurry 6 encasing the reinforcing steel bars 3. A cushion layer 7 covers the top of the discarded sleeve 2 and the adjacent surface of the main building 1. Structural steel bars 4 are embedded within the cushion layer 7, and an expansion waterstop strip 8 is installed at the joint between the cushion layer 7 and the main building 1. The vertically installed reinforcing steel bars 3 enhance the structural strength, the plug 5 seals the bottom to prevent groundwater ingress, and the sealing slurry 6 fills the inner cavity to form a dense waterproof layer. The cushion layer 7 further protects the top of the sleeve and the adjacent surface of the main building 1. The embedded structural steel bars 4 improve crack resistance, and the expansion waterstop strip 8 at the joint enhances the waterproofing effect. Overall, multiple waterproof lines are formed, effectively preventing groundwater infiltration, ensuring the safety and stability of the building structure, and extending the building's service life.

[0033] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The reinforcing steel bar 3 is a U-shaped structural steel bar with its bent part facing the axis of the abandoned sleeve 2. The design of the reinforcing steel bar 3 as a U-shaped structural steel bar with its bent part facing the axis of the abandoned sleeve 2 can effectively disperse the stress generated by the sleeve when it is subjected to external force or internal pressure, and avoid structural damage caused by stress concentration. The U-shaped structural steel bar is closely attached to the inner wall of the sleeve to form a stable support system, which significantly enhances the overall structural strength of the sleeve and prevents the sleeve from deforming or breaking due to external impact or internal pressure changes, thereby improving the stability and reliability of the entire pre-embedded sleeve sealing structure.

[0034] See Figure 1 , Figure 2 , Figure 3 , Figure 4The structural steel bars 4 are radially distributed and embedded inside the cushion layer 7. This unique layout allows the structural steel bars 4 to comprehensively enhance the crack resistance of the cushion layer 7. The radially distributed structural steel bars 4 can effectively disperse and resist the stress generated in the cushion layer 7 due to factors such as temperature changes and foundation settlement, avoiding cracking of the cushion layer caused by stress concentration. At the same time, the structural steel bars 4 are closely integrated with the cushion layer 7 to form a stable whole, further improving the load-bearing capacity and durability of the cushion layer 7, thereby ensuring the waterproof effect of the cushion layer 7 and extending the service life of the structure.

[0035] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The plug 5 is a metal welded sealing plate. The metal material has excellent sealing performance and durability. It is firmly connected to the bottom end of the waste casing 2 through welding process to form a tight sealing structure. It can effectively prevent groundwater or water from entering from the bottom end of the casing, providing a reliable sealing guarantee for the inside of the casing, preventing the internal reinforcing steel bar 3, sealing grout 6 and other structures from being damp and corroded, and ensuring the stability and durability of the internal structure of the casing. At the same time, the metal welded sealing plate also has high strength and impact resistance, and can withstand a certain amount of external force without damage, further improving the reliability of the sealing structure.

[0036] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The sealing grout 6 is a cement-based grouting material, which is densely filled without cavities. The sealing grout 6 is made of cement-based grouting material, which has good fluidity and plasticity, and can fully fill the inner cavity of the waste sleeve 2, ensuring that the filling is dense and without cavities. After hardening, the cement-based grouting material can tightly bond with the reinforcing steel bar 3 and the inner wall of the sleeve to form a strong waterproof layer, effectively blocking the penetration path of water through the inside of the sleeve. At the same time, the cement-based grouting material also has high strength and durability, and can withstand certain pressure and stress without damage, ensuring a dry environment inside the structure, preventing internal structural corrosion and damage caused by water penetration, and extending the service life of the structure.

[0037] See Figure 1 , Figure 2 , Figure 3 , Figure 4The cushion layer 7 is a waterproof mortar layer, and its coverage extends beyond the edge of the abandoned sleeve 2. The cushion layer 7 adopts a waterproof mortar layer design, and its coverage extends beyond the edge of the abandoned sleeve 2. This design can fully protect the top of the sleeve and the surrounding area, preventing water from seeping into the interior of the building structure from the edge of the sleeve. The waterproof mortar layer has good waterproof performance and durability, and can resist the erosion and seepage of groundwater for a long time. At the same time, the coverage beyond the edge of the sleeve can form an effective waterproof barrier, guiding water to a position away from the sleeve, enhancing the overall waterproof effect. In addition, the waterproof mortar layer can also be tightly bonded to the building body 1 and the surface of the sleeve to form a stable overall structure, improving the stability and safety of the building structure.

[0038] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The expansion waterstop strip 8 is made of butyl rubber and is linearly embedded in the joint. The expansion waterstop strip 8 is made of butyl rubber, which has good elasticity and water-stopping performance. When moisture appears at the joint, the expansion waterstop strip 8 can quickly absorb water and expand to form a tight seal structure, effectively preventing moisture from penetrating into the building structure through the joint. Butyl rubber also has excellent weather resistance and chemical corrosion resistance, which can maintain stable water-stopping performance during long-term use and improve the waterproof performance of the structure. At the same time, the linear embedding method allows the expansion waterstop strip 8 to fit tightly against the joint surface, forming a seamless waterproof barrier and ensuring a dry environment inside the building.

[0039] See Figure 1 , Figure 2 , Figure 3 , Figure 4The expansion waterstop strip 8 is spatially isolated from the structural steel reinforcement 4. The padding layer 7 and the sealing slurry 6 are arranged at intervals along the vertical direction, forming a layered seepage-proof structure. The spatial isolation between the expansion waterstop strip 8 and the structural steel reinforcement 4 effectively prevents the structural steel reinforcement 4 from directly damaging the expansion waterstop strip 8 during stress or vibration, such as puncture or compression. This ensures that the expansion waterstop strip 8 can maintain its intact water-stopping performance for a long time. When exposed to moisture, the expansion waterstop strip 8 can absorb water and expand normally, forming a tight seal structure that effectively prevents water penetration and improves the waterproof reliability of the structure. At the same time, the spatial isolation also facilitates construction and maintenance, reduces construction difficulty and cost, and extends the service life of the structure. To ensure the safety and stability of the building structure, the bedding layer 7 and the sealing slurry 6 are arranged vertically at intervals to form a layered waterproof structure. This design gives the structure multiple lines of defense against water damage. The sealing slurry 6, as the first line of defense, fills the inner cavity of the sleeve to form a dense waterproof layer, preventing water from seeping in from the inside of the sleeve. The bedding layer 7, as the second line of defense, covers the top of the sleeve and the surrounding area to prevent water from seeping in from the edges. The two lines of defense work together to effectively block water from seeping in through different paths, improving the overall waterproof performance of the structure. At the same time, the layered waterproof structure can also disperse and resist stress caused by external forces or internal pressure, enhancing the stability and durability of the structure and ensuring the dryness and safety of the building's interior environment.

[0040] The implementation principle of this embodiment is as follows: First, during the construction of the main building 1, the abandoned sleeve 2 is pre-embedded. Later, after the sleeve is confirmed to be abandoned according to the design requirements, the inside and surrounding area of ​​the sleeve are cleaned to ensure that there are no debris and dust. The bottom opening of the abandoned sleeve 2 is sealed. Specifically, a metal welded sealing plate is used as the plug 5. The welding is firm to ensure a complete seal, effectively preventing groundwater or water from entering from the bottom of the sleeve, forming the first physical barrier.

[0041] Then, U-shaped structural steel bars 3 are vertically installed in the inner cavity of the abandoned casing 2, with their curved parts facing the casing axis to enhance the overall structural strength of the subsequent grouting material. Cement-based grouting material is used as sealing grout 6 to fill the inside of the casing and ensure that the filling is dense and without cavities. During this process, the U-shaped structural steel bars 3 are completely wrapped to form a second anti-seepage system, effectively blocking the seepage path of water through the inside of the casing.

[0042] Subsequently, a waterproof mortar layer is covered on the top of the abandoned sleeve 2 and the surface of the adjacent building body 1 as a cushion layer 7. The coverage of the cushion layer 7 extends beyond the edge of the abandoned sleeve 2 to ensure full coverage and protection of the top of the sleeve and the surrounding area. Radially distributed structural steel bars 4 are embedded inside the cushion layer 7 to enhance the crack resistance of the cushion layer and prevent waterproofing failure caused by cracking of the cushion layer.

[0043] An expansion waterstop strip 8 made of butyl rubber is linearly embedded at the junction of the subbase 7 and the main building 1. Utilizing the expansion and water-stopping properties of butyl rubber, a soft and elastic waterproof barrier is formed at the joint, effectively preventing water from penetrating through the joint. Note that the expansion waterstop strip 8 and the structural steel reinforcement 4 need to be spatially isolated to avoid direct damage to the waterstop strip by the steel reinforcement and to ensure the long-term effectiveness of the waterstop strip.

[0044] The cushion layer 7 and the sealing slurry 6 are arranged at intervals along the vertical direction to form a layered seepage prevention structure. After the construction is completed, a comprehensive inspection is carried out to ensure that the waterproofing measures of each layer are in place and without defects.

[0045] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A pre-embedded sleeve sealing structure, characterized in that: The structure includes a building body (1), in which a waste sleeve (2) is pre-embedded. A reinforcing steel bar (3) is vertically installed in the inner cavity of the waste sleeve (2). A plug (5) is sealed at the bottom opening of the waste sleeve (2). The inner cavity of the waste sleeve (2) is filled with a sealing slurry (6) that wraps the reinforcing steel bar (3). A pad (7) covers the top of the waste sleeve (2) and the surface of the adjacent building body (1). A structural steel bar (4) is embedded in the pad (7). An expansion waterstop strip (8) is installed at the joint between the pad (7) and the building body (1).

2. The pre-embedded sleeve sealing structure according to claim 1, characterized in that: The reinforcing steel bar (3) is a U-shaped steel bar, with its bent part arranged in the direction of the axis of the abandoned sleeve (2).

3. The pre-embedded sleeve sealing structure according to claim 1, characterized in that: The structural steel bars (4) are radially distributed and embedded inside the cushion layer (7).

4. The pre-embedded sleeve sealing structure according to claim 1, characterized in that: The plug (5) is a metal welded sealing plate sealing plug.

5. The pre-embedded sleeve sealing structure according to claim 1, characterized in that: The sealing grout (6) is a cement-based grouting material, which is densely filled without cavities.

6. The pre-embedded sleeve sealing structure according to claim 1, characterized in that: The padding layer (7) is a waterproof mortar layer, and its coverage extends beyond the edge of the discarded sleeve (2).

7. The pre-embedded sleeve sealing structure according to claim 1, characterized in that: The expansion sealing strip (8) is made of butyl rubber and is linearly embedded in the joint.

8. The pre-embedded sleeve sealing structure according to claim 1, characterized in that: The expansion waterstop strip (8) is spatially isolated from the structural steel reinforcement (4).

9. The pre-embedded sleeve sealing structure according to claim 1, characterized in that: The padding layer (7) and the sealing slurry (6) are arranged at intervals in the vertical direction to form a layered seepage prevention structure.

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