A combined waterproofing treatment device for the connection between a new building and an existing structure basement

By using a combination of external and internal waterproofing layers at the connection between the new building and the existing basement, the problem of poor waterproofing at the connection between the new building and the existing structure is solved, achieving a continuous and dense waterproofing effect, preventing water seepage, and extending the life of the building.

CN224363358UActive Publication Date: 2026-06-16FU JIAN ER JIAN JIAN SHE JI TUAN GONG SI

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FU JIAN ER JIAN JIAN SHE JI TUAN GONG SI
Filing Date
2025-05-13
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Poor waterproofing at the junction of new buildings and existing basements can easily lead to water seepage, affecting the functionality of the basement space and the normal use of the building.

Method used

The design employs a combination of external and internal waterproofing layers. The external waterproofing layer includes an outer waterproof coating, a waterproof sealant, and an external waterproof membrane, while the internal waterproofing layer includes an inner waterproof coating and an internal waterproof membrane. This dual waterproofing structure solves the problem of waterproofing the connection between new and old buildings, forming a continuous and dense waterproof layer.

🎯Benefits of technology

It effectively avoids the risk of water seepage caused by improper connection of the waterproof layer, prevents groundwater leakage, extends the service life of the building, and ensures the integrity of the basement space function.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to building technical field, specifically disclose a new building and existing structure basement connecting place combination waterproof treatment device, including basement building piece, the outside of basement building piece is equipped with outer waterproof layer, the top of basement building piece is equipped with new building piece, the side face of new building piece and basement building piece close to each other jointly fixed connection has concrete connecting layer, the top of concrete connecting layer and the below of concrete connecting layer are equipped with first waterproof inner layer and second waterproof inner layer respectively, the outer waterproof layer includes waterproof coating outer layer, through adopting the double combination waterproof structure design of outer waterproof layer and inner waterproof layer, solve the connection problem of new and old building waterproof, avoid the water seepage risk caused by improper connection of waterproof layer, guarantee the reliability of connecting place waterproof, prevent the influence of groundwater seepage on basement space function, will better combination waterproof to connecting place, prolong the service life of building.
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Description

Technical Field

[0001] This utility model relates to the field of construction, and in particular to a combined waterproofing treatment device for the connection between a new building and an existing basement structure. Background Technology

[0002] As urban underground space development gradually deepens, the number of connection projects between new buildings and existing basements is increasing. Due to differences in construction time, structural form, and settlement characteristics between new buildings and existing basements, the connection points are prone to becoming weak points for groundwater leakage, requiring waterproofing treatment.

[0003] However, current waterproofing methods at the connection between new buildings and basements typically employ single-layer waterproofing membranes or coatings. These methods are ineffective in handling the complex conditions at the connection between new buildings and existing basements, easily leading to water seepage. This can damage the functionality of the basement space and affect the normal use of the building. Therefore, we propose a combined waterproofing treatment device for the connection between new buildings and existing basements to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a combined waterproofing treatment device for the connection between a new building and an existing basement structure. This device solves the problem that current waterproofing methods for the connection between new buildings and basements, which typically use single waterproofing membranes or coatings, are ineffective in dealing with the complex conditions at the connection between new buildings and existing basements. This often leads to water seepage, which can damage the functionality of the basement space and affect the normal use of the building.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A combined waterproofing treatment device for the connection between a new building and an existing basement structure includes a basement building component, an external waterproofing layer on the outside of the basement building component, a new building component on top of the basement building component, a concrete connection layer fixedly connected to one side of the new building component and the basement building component that are close to each other, and a first waterproof inner layer and a second waterproof inner layer respectively provided above and below the concrete connection layer.

[0007] As a preferred embodiment of the combined waterproofing treatment device for the connection between a new building and an existing basement structure according to this utility model, the external waterproofing layer includes a waterproof coating layer, which is applied to the outer surface of the basement building component and the outer surface of the new building component. A waterproof sealant is attached to the outer surface of the waterproof coating layer, and an external waterproof membrane is attached to the outer surface of the waterproof sealant. A cement mortar outer layer is applied to the outer surface of the external waterproof membrane.

[0008] As a preferred embodiment of the combined waterproofing treatment device for the connection between a new building and an existing basement structure according to this utility model, the first waterproof inner layer includes a waterproof coating inner layer, which is applied to the inner wall of the basement building component and the outer surface of the concrete connection layer.

[0009] As a preferred embodiment of the combined waterproofing treatment device for the connection between a new building and an existing basement structure according to this utility model, the outer surface of the concrete connection layer is provided with through holes, and the interior of the concrete connection layer has multiple reinforcing ribs, with the top and bottom of each reinforcing rib extending into the interior of the new building component and the interior of the basement building component, respectively.

[0010] As a preferred embodiment of the combined waterproofing treatment device for the connection between a new building and an existing basement structure according to this utility model, the outer surface of the inner waterproof coating layer is connected to an inner waterproof membrane, and the outer surface of the inner waterproof membrane is coated with a cement mortar inner layer. The first and second inner waterproof layers are made of the same material.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The waterproofing system at the connection between the new building and the existing basement structure utilizes an outer waterproof coating to seal the fine pores on the building's exterior surface through its penetration and adhesion properties. A waterproof sealant further seals these gaps. Additionally, an outer waterproof membrane provides a continuous and dense waterproof layer, preventing issues such as loose membrane overlaps and membrane breakage. The first inner waterproof layer employs a similar structure to the outer waterproof layer. This dual-layer waterproofing design, combining the outer and inner waterproof layers, solves the challenge of connecting the new and old building's waterproofing, avoids the risk of water seepage due to improper waterproofing layer connections, prevents groundwater leakage from affecting the basement's functionality, and extends the building's lifespan. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0014] Figure 1 This is a frontal three-dimensional structural schematic diagram of a combined waterproofing treatment device for the connection between a new building and an existing basement structure according to the present invention.

[0015] Figure 2 This is a frontal sectional view of a combined waterproofing treatment device for the connection between a new building and an existing basement structure, according to the present invention.

[0016] Figure 3 This is a frontal sectional view of the first waterproof inner layer of the combined waterproofing treatment device for the connection between a new building and an existing basement structure according to the present invention.

[0017] Figure 4 This utility model relates to a combined waterproofing treatment device for the connection between a new building and an existing basement structure. Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Basement building component; 2. New building component; 3. External waterproofing layer; 301. Outer layer of waterproof coating; 302. Waterproof sealant; 303. External waterproof membrane; 304. Outer layer of cement mortar; 4. Concrete bonding layer; 5. Through hole; 6. First inner waterproofing layer; 601. Inner layer of waterproof coating; 602. Inner waterproof membrane; 603. Inner layer of cement mortar; 7. Second inner waterproofing layer; 8. Reinforcing rib. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Unless otherwise specified, the methods used in the present utility model are conventional methods; unless otherwise specified, the raw materials and apparatus used are conventional commercially available products.

[0020] The waterproof outer layer, waterproof sealant, outer waterproof membrane, cement mortar outer layer, waterproof inner layer, inner waterproof membrane, and cement mortar inner layer in this utility model are all common materials in the prior art, and will not be described in detail here.

[0021] Please see Figure 1-4 In this utility model, a combined waterproofing treatment device for the connection between a new building and an existing basement structure includes a basement building component 1, an outer waterproof layer 3 on the outside of the basement building component 1, a new building component 2 on the top of the basement building component 1, a concrete connection layer 4 fixedly connected to the side of the new building component 2 and the basement building component 1 that are close to each other, and a first waterproof inner layer 6 and a second waterproof inner layer 7 respectively provided above and below the concrete connection layer 4.

[0022] In this embodiment: the outer waterproof layer 3 forms an outer defense line to prevent external moisture from intruding. The concrete connection layer 4 can firmly connect the new building component 2 and the basement building component 1, ensuring the integrity of the structure. The first waterproof inner layer 6 and the second waterproof inner layer 7 can waterproof the inside of the connection, forming a double waterproof structure with the outer waterproof layer 3. This effectively solves the problem of poor waterproofing effect of traditional single waterproofing methods in the background art under complex conditions at the connection between new buildings and existing basement structures.

[0023] As a technical optimization of this utility model, the outer waterproof layer 3 includes a waterproof coating outer layer 301, which is coated on the outer surface of the basement building component 1 and the outer surface of the newly built building component 2. A waterproof sealant 302 is connected to the outer surface of the waterproof coating outer layer 301, and an outer waterproof membrane 303 is connected to the outer surface of the waterproof sealant 302. A cement mortar outer layer 304 is coated on the outer surface of the outer waterproof membrane 303.

[0024] In this embodiment: the waterproof coating outer layer 301 utilizes its own penetration and adhesion properties to deeply seal the fine pores on the outer surface of the basement building component 1 and the newly built building component 2, forming a basic waterproof barrier. The waterproof sealant 302 further seals the waterproof coating outer layer 301, enhancing the tightness of the waterproofing. The outer waterproof membrane 303 has a certain tensile strength and can cope with structural deformation. The cement mortar outer layer 304 can protect the outer waterproof membrane 303, preventing it from being damaged by external mechanical forces, ultraviolet aging, etc., and extending the service life of the outer waterproof layer 3.

[0025] As a technical optimization of this utility model, the first waterproof inner layer 6 includes a waterproof coating inner layer 601, which is coated on the inner wall of the basement building component 1 and the outer surface of the concrete connection layer 4. An inner waterproof membrane 602 is connected to the outer surface of the waterproof coating inner layer 601, and a cement mortar inner layer 603 is coated on the outer surface of the inner waterproof membrane 602. The first waterproof inner layer 6 and the second waterproof inner layer 7 are both made of the same material.

[0026] In this embodiment: the inner waterproof coating 601 can seal the pores on the surface of the internal structure to prevent water from penetrating from the inside, while the inner waterproof membrane 602, with its good waterproof performance and tensile strength, further blocks water. Together with the outer waterproof membrane 303, they form a double waterproof protection. The cement mortar inner layer 603 protects the inner waterproof membrane 602 and enhances its waterproof performance, ensuring the reliability of the waterproofing at the joint.

[0027] As a technical optimization of this utility model, the outer surface of the concrete connection layer 4 is provided with through holes 5, and the interior of the concrete connection layer 4 has multiple reinforcing ribs 8, the top end and the bottom end of each reinforcing rib 8 extending into the interior of the new building component 2 and the interior of the basement building component 1, respectively.

[0028] In this embodiment: the reinforcement 8 can enhance the structural strength of the connection, while the through hole 5 can connect the new building component 2 and the basement building component 1, which facilitates construction operations.

[0029] The working principle of this utility model is as follows: In use, the outer waterproof coating 301 is applied to the outer surface of the basement building component 1 and the newly built building component 2 to form the first waterproof barrier. By utilizing the penetration and adhesion properties of the waterproof coating, the fine pores on the building surface are sealed to reduce the intrusion of water. Then, the waterproof sealant 302 is bonded to the outer surface of the outer waterproof coating 301 to further seal any small gaps that may exist in the waterproof coating. Then, the outer waterproof membrane 303 is covered on the outer surface of the waterproof sealant 302, and the outer cement mortar layer 304 is applied on the outer surface of the outer waterproof membrane 303 to form the outer waterproof layer 3.

[0030] Next, the inner waterproof coating 601 is applied to the inner wall of the basement building component 1 and the surface of the concrete connection layer 4, which can seal the pores on the surface of the internal structure. The inner waterproof membrane 602 is the same as the outer waterproof membrane 303, with good waterproof performance and a certain tensile strength, which can effectively block the penetration of water. Similarly, the cement mortar inner layer 603 is applied to the outer surface of the inner waterproof membrane 602, which protects the inner waterproof membrane 602 and enhances the overall waterproof performance of the inner waterproof layer, thereby providing double waterproofing for the basement building component 1 and the newly built building component 2.

[0031] However, the above description is merely a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model. For those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

Claims

1. A combined waterproofing treatment device for the connection between a newly constructed building and an existing basement structure, characterized in that: The basement building component (1) is provided with an external waterproof layer (3) on the outside of the basement building component (1). A new building component (2) is provided above the basement building component (1). A concrete connection layer (4) is fixedly connected to one side of the new building component (2) and the basement building component (1) that are close to each other. A first waterproof inner layer (6) and a second waterproof inner layer (7) are provided above and below the concrete connection layer (4), respectively.

2. The combined waterproofing treatment device for the connection between a new building and an existing basement structure according to claim 1, characterized in that: The outer waterproof layer (3) includes a waterproof coating (301), which is applied to the outer surface of the basement building component (1) and the outer surface of the newly built building component (2), respectively. The outer surface of the waterproof coating (301) is connected with waterproof sealant (302).

3. The combined waterproofing treatment device for the connection between a new building and an existing basement structure according to claim 2, characterized in that: The outer surface of the waterproof sealant (302) is connected to an outer waterproof membrane (303), and the outer surface of the outer waterproof membrane (303) is coated with a cement mortar outer layer (304).

4. The combined waterproofing treatment device for the connection between a new building and an existing basement structure according to claim 1, characterized in that: The first waterproof inner layer (6) includes a waterproof coating inner layer (601), which is applied to the inner wall of the basement building component (1) and the outer surface of the concrete connection layer (4).

5. A combined waterproofing treatment device for the connection between a new building and an existing basement structure according to claim 1, characterized in that: The outer surface of the concrete connecting layer (4) is provided with through holes (5), and the concrete connecting layer (4) has multiple reinforcing ribs (8) inside. The top end and bottom end of each reinforcing rib (8) extend into the interior of the new building component (2) and the interior of the basement building component (1), respectively.

6. A combined waterproofing treatment device for the connection between a new building and an existing basement structure according to claim 4, characterized in that: The outer surface of the waterproof inner layer (601) is connected to the inner waterproof membrane (602), and the outer surface of the inner waterproof membrane (602) is coated with the cement mortar inner layer (603). The first waterproof inner layer (6) and the second waterproof inner layer (7) are made of the same material.