A waterproof structure for fabricated building and a method of using the same

Abstract

The application discloses a waterproof structure for fabricated building and a using method thereof, and belongs to the technical field of fabricated building.The waterproof structure comprises a prefabricated outer wall, cast-in-situ wall bodies arranged on both sides of the prefabricated outer wall, building sealant arranged on opposite sides of the prefabricated outer wall and the cast-in-situ wall bodies, two fireproof adhesives embedded on the front sides of the prefabricated outer wall and the cast-in-situ wall bodies, sealant strips arranged on one side of the fireproof adhesives, two backing materials embedded on the back sides of the prefabricated outer wall and the cast-in-situ wall bodies, waterproof adhesives arranged on one side of the backing materials, and drainage grooves arranged between the prefabricated outer wall and the cast-in-situ wall bodies, wherein the bottom and the side of the drainage grooves are provided with drainage holes.The waterproof structure has the advantages that the prefabricated outer wall and the cast-in-situ wall bodies are seamlessly connected under the cooperation of the structure, and the safety and stability between the prefabricated outer wall and the cast-in-situ wall bodies are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building technology, specifically to a waterproof structure for prefabricated buildings and its application method. Background Technology

[0002] Prefabricated modular construction refers to buildings constructed using prefabricated concrete components manufactured on factory assembly lines. These components, such as walls, beams, slabs, columns, balconies, and stairs, are prefabricated in factories and then transported to the construction site for assembly to form the desired building structure. This process offers advantages such as high overall precision, a tight construction schedule, a better on-site construction environment, and significantly reduced material waste, and is currently being vigorously promoted and popularized in my country.

[0003] While the advantages of prefabricated buildings are obvious, they also present some problems. Because prefabricated buildings involve initial fabrication followed by on-site assembly, joints are easily created between the prefabricated components. These joints are prone to deformation and cracking, forming channels for water seepage. During the rainy season, rainwater can seep into the building through these channels, causing dampness and mold on the walls, and even affecting the lifespan of interior decorations and furniture. Deformation and cracks at the joints not only lead to water seepage but can also affect the stability of the building structure. If the deformation and cracks at the joints are too large, they can weaken the connection between the prefabricated components, threatening the stability of the entire building structure. In the event of extreme weather or natural disasters such as earthquakes, this loss of structural stability could lead to building collapse or severe damage. Summary of the Invention

[0004] The purpose of this invention is to provide a waterproof structure for prefabricated buildings and its application method. When used in conjunction with the structure, the prefabricated exterior wall and the cast-in-place wall are seamlessly connected, which significantly improves the safety and stability between the two, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a waterproof structure for prefabricated buildings, comprising a prefabricated exterior wall, with cast-in-place walls on both sides of the prefabricated exterior wall, and building sealant on the opposite side of the prefabricated exterior wall and the cast-in-place walls. Two fire-retardant adhesives are embedded together on the front side of the prefabricated exterior wall and the cast-in-place walls, with a sealing strip on one side of the fire-retardant adhesive. Two backing materials are embedded together on the rear side of the prefabricated exterior wall and the cast-in-place walls, with waterproof adhesive on one side of the backing materials. A drainage channel is provided between the prefabricated exterior wall and the cast-in-place walls, with drainage holes at the bottom and sides of the drainage channel. Two sets of several first tenon-and-mortise blocks are fixedly connected to both sides of the prefabricated exterior wall, and two sets of several second tenon-and-mortise blocks adapted to the first tenon-and-mortise blocks are fixedly connected to the side of the cast-in-place wall closest to the prefabricated exterior wall. Waterproof structures are provided on both the front and rear sides of the prefabricated exterior wall and the cast-in-place walls.

[0006] Furthermore, the waterproof structure includes an innermost waterproof layer, a protective layer on one side of the waterproof layer, and a water-facing layer on one side of the protective layer.

[0007] Furthermore, both the front and rear sides of the precast exterior wall and the cast-in-place wall are provided with polymer interlocking joint tapes, which are located on one side of the waterproof adhesive and the sealing strip, respectively, and are compatible with the precast exterior wall and the cast-in-place wall.

[0008] Furthermore, both the precast exterior wall and the cast-in-place wall have sealing grooves on one side that are compatible with fireproof adhesive, sealing strips, backing materials, and waterproof adhesive.

[0009] Furthermore, a number of reinforcing ribs are provided through one side of the building sealant, and the two ends of the reinforcing ribs penetrate into the inner cavity of the precast exterior wall and the cast-in-place wall, respectively.

[0010] A method for using a waterproof structure in prefabricated buildings includes the following steps:

[0011] Step 1: Using a combination of precast exterior walls and cast-in-place walls, a stable wall structure is formed by the cooperation of the first and second mortise and tenon blocks, ensuring the stability of the structure and providing a foundation for subsequent waterproofing treatment. This makes the assembly process more convenient and reduces the time and difficulty of on-site construction.

[0012] Step 2: The building sealant is applied to the opposite side of the precast exterior wall and the cast-in-place wall to fill the tiny gaps between them, providing an initial sealing effect. The through-hole setting of the reinforcing ribs further enhances the adhesion and tensile strength of the building sealant, ensuring a long-lasting sealing effect.

[0013] Step 3: Fire retardant and sealing strips are embedded together on the front side of the precast exterior wall and cast-in-place wall. The fire retardant provides a fire barrier, while the sealing strips further enhance the sealing performance at the joints. The two work together to provide both fire protection and waterproofing.

[0014] Step 4: Backing material and waterproofing adhesive are applied to the back of the precast exterior wall and cast-in-place wall. The backing material provides structural support, while the waterproofing adhesive further seals the joints to prevent moisture penetration.

[0015] Step 5: The waterproof layer is located on the innermost side, directly contacting the precast exterior wall and cast-in-place wall, providing basic waterproof protection. The protective layer covers the outside of the waterproof layer, protecting it from external physical damage. The water-facing layer faces the external environment, directly resisting the intrusion of external moisture, forming a multi-layered protective system. The polymer interlocking joint tape is placed on one side of the waterproof adhesive and sealing strip, adapting to the precast exterior wall and cast-in-place wall, enhancing the interlocking force at the joint, and ensuring the tightness and waterproof performance of the joint.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention boasts high safety. In practical use, with proper structural coordination, the precast exterior wall and the cast-in-place wall achieve a seamless connection, significantly enhancing their safety and stability. It not only provides waterproofing but also integrates a highly efficient drainage system, ensuring the orderly discharge of rainwater and other liquids, preventing structural damage or leakage caused by water accumulation. The first tenon and mortise blocks on both sides of the precast exterior wall precisely match the second tenon and mortise blocks on the cast-in-place wall. This combination of traditional craftsmanship and modern construction technology ensures the stability and precision of the connection. High-performance building sealant is used at the joint between the precast exterior wall and the cast-in-place wall to effectively fill tiny gaps and prevent moisture intrusion. Furthermore, reinforcing ribs within the sealant enhance its tensile strength and adhesion, further improving the sealing effect. Fire-retardant sealant is applied to one side of both the precast exterior wall and the cast-in-place wall. The embedded sealing strips not only provide excellent sealing performance but also form an effective fire barrier in the event of a fire, ensuring the safety of the building. On the other side, the backing material provides structural support, while the waterproof adhesive further seals the joints, forming a robust rear protective layer that prevents moisture penetration. The waterproof layer is in direct contact with the wall, providing basic waterproofing. The protective layer prevents physical damage to the waterproof layer, while the water-facing layer faces the external environment directly, resisting moisture intrusion. These three elements work together to form a powerful waterproof system. On one side of the waterproof adhesive and sealing strips, a polymer interlocking joint tape tightly interlocks with the wall, enhancing the structural strength and sealing performance of the joints and effectively resisting external moisture pressure. The sealing groove is not only used to embed the sealing material but also connects to the drainage channel, forming a complete drainage network that ensures effective drainage even under extreme weather conditions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a schematic diagram of the partial structural disassembly state of the present invention.

[0021] In the diagram: 1. Precast exterior wall; 2. Cast-in-place wall; 3. Building sealant; 4. Fireproof adhesive; 5. Sealing strip; 6. Backing material; 7. Waterproof adhesive; 8. First tenon block; 9. Second tenon block; 10. Waterproof structure; 101. Waterproof layer; 102. Protective layer; 103. Water-facing layer; 11. Polymer interlocking joint tape; 12. Sealing groove; 13. Reinforcing rib. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-3 This invention provides a waterproof structure for prefabricated buildings, including a prefabricated exterior wall 1, cast-in-place walls 2 on both sides of the prefabricated exterior wall 1, building sealant 3 on the opposite side of the prefabricated exterior wall 1 and the cast-in-place walls 2, two fireproof adhesives 4 embedded together on the front side of the prefabricated exterior wall 1 and the cast-in-place walls 2, a sealing strip 5 on one side of the fireproof adhesive 4, two backing materials 6 embedded together on the rear side of the prefabricated exterior wall 1 and the cast-in-place walls 2, a waterproof adhesive 7 on one side of the backing materials 6, a drainage channel between the prefabricated exterior wall 1 and the cast-in-place walls 2, drainage holes on the bottom and sides of the drainage channel, two sets of several first tenon blocks 8 fixedly connected to both sides of the prefabricated exterior wall 1, two sets of several second tenon blocks 9 adapted to the first tenon blocks 8 fixedly connected to the side of the cast-in-place walls 2 near the prefabricated exterior wall 1, and a waterproof structure 10 on both the front and rear sides of the prefabricated exterior wall 1 and the cast-in-place walls 2.

[0024] In prefabricated buildings, to ensure good waterproofing performance, a drainage channel is installed between the prefabricated exterior wall 1 and the cast-in-place wall 2. The drainage channel takes into account the influence of natural conditions such as rainfall and wind speed; its width and depth are scientifically calculated and rationally set. Drainage holes are cleverly designed at the bottom and sides of the drainage channel. These holes not only serve a drainage function but also further improve drainage efficiency through their optimized number and location. Based on the length, slope, and expected water flow of the drainage channel, the layout of the drainage holes was precisely designed using advanced fluid dynamics simulation software. This ensures that rainwater can be quickly discharged through the drainage holes and avoids water accumulation caused by poor drainage, thus effectively protecting the structural safety of the prefabricated building. Based on historical rainfall data and... Based on the local climate characteristics, the dimensions of the drainage channels were precisely calculated using mathematical models to ensure that rainwater can be discharged into the channels quickly and efficiently, flowing smoothly along the pre-designed path and preventing water accumulation at the joints. The drainage channels are seamlessly connected to the building's drainage system through designed drainage pipes, ensuring that rainwater can be discharged from the building in a timely and efficient manner, and preventing backflow and leakage caused by poor drainage. High-quality drainage pipe materials were used, and installation and commissioning were carried out in strict accordance with relevant national standards to ensure the stability and durability of the drainage system. At the same time, the drainage system is equipped with necessary maintenance facilities and inspection ports so that timely inspection and maintenance can be carried out when needed, ensuring its long-term stable operation.

[0025] Specifically, the waterproof structure 10 includes an innermost waterproof layer 101, a protective layer 102 on one side of the waterproof layer 101, and a water-facing layer 103 on one side of the protective layer 102. Through the waterproof structure 10, the protective layer 102 protects the precast exterior wall 1 and the cast-in-place wall 2 from erosion and damage by the external environment, effectively resisting the invasion of wind, rain, sun, oxidation, and corrosion. The waterproof layer 101, located inside the protective layer 102, prevents moisture from penetrating into the building interior through the precast exterior wall 1 and the cast-in-place wall 2, thereby avoiding problems such as dampness, mold, and peeling of the walls. The water-facing layer 103 prevents moisture from penetrating into the building interior from the outside, thus protecting the integrity and stability of the building structure.

[0026] Both the precast exterior wall 1 and the cast-in-place wall 2 are equipped with polymer interlocking joint tape 11 on their front and rear sides. The polymer interlocking joint tape 11 is located on one side of the waterproof adhesive 7 and the sealing strip 5, respectively, and is compatible with both the precast exterior wall 1 and the cast-in-place wall 2. Through the application of the polymer interlocking joint tape 11, excellent waterproof performance is achieved, and the adhesion between the precast exterior wall 1 and the cast-in-place wall 2 is increased. This enhanced adhesion helps improve the durability and stability of the joint.

[0027] Both the precast exterior wall 1 and the cast-in-place wall 2 have sealing grooves 12 on one side that are compatible with fireproof adhesive 4, sealing strips 5, backing material 6, and waterproof adhesive 7. The sealing grooves 12 are used to place the fireproof adhesive 4, sealing strips 5, backing material 6, and waterproof adhesive 7, thereby improving the rationality of the structural layout.

[0028] Several reinforcing ribs 13 are installed through one side of the building sealant 3, with both ends of the reinforcing ribs 13 penetrating into the inner cavities of the precast exterior wall 1 and the cast-in-place wall 2, respectively. The installation of the reinforcing ribs 13 enhances the connection stability between the precast exterior wall 1 and the cast-in-place wall 2, thereby laying the foundation for waterproofing.

[0029] A method for using a waterproof structure in prefabricated buildings includes the following steps:

[0030] Step 1: Using the combination of prefabricated exterior wall 1 and cast-in-place wall 2, a stable wall structure is formed by the cooperation and connection of the first tenon block 8 and the second tenon block 9, which ensures the stability of the structure and provides a foundation for subsequent waterproofing treatment, making the assembly process more convenient and reducing the time and difficulty of on-site construction.

[0031] Step 2: The building sealant 3 is applied to the opposite side of the precast exterior wall 1 and the cast-in-place wall 2, filling the tiny gap between them and providing an initial sealing effect. The through-hole setting of the reinforcing rib 13 further enhances the adhesion and tensile strength of the building sealant 3, ensuring a long-lasting sealing effect.

[0032] Step 3: Fire retardant 4 and sealing strip 5 are embedded together on the front side of precast exterior wall 1 and cast-in-place wall 2. Fire retardant 4 provides a fire barrier, while sealing strip 5 further enhances the sealing performance of the joint. The two work together to provide both fire protection and waterproofing.

[0033] Step 4: Backing material 6 and waterproof adhesive 7 are placed on the back of precast exterior wall 1 and cast-in-place wall 2. Backing material 6 provides structural support, while waterproof adhesive 7 further seals the joints to prevent moisture penetration.

[0034] Step 5: The waterproof layer 101 is located on the innermost side, directly contacting the precast exterior wall 1 and the cast-in-place wall 2, providing basic waterproof protection. The protective layer 102 covers the outside of the waterproof layer 101, protecting the waterproof layer 101 from external physical damage. The water-facing layer 103 faces the external environment, directly resisting the intrusion of external moisture, forming a multi-layer protection system. The polymer interlocking joint tape 11 is placed on one side of the waterproof adhesive 7 and the sealing strip 5, and is compatible with the precast exterior wall 1 and the cast-in-place wall 2, enhancing the interlocking force at the joint and ensuring the tightness and waterproof performance of the joint.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A waterproof structure for prefabricated buildings, characterized in that: The structure includes a precast exterior wall (1), on both sides of which are cast-in-place walls (2). Building sealant (3) is applied to the opposite sides of both the precast exterior wall (1) and the cast-in-place walls (2). Two fireproof sealants (4) are embedded together on the front sides of both the precast exterior wall (1) and the cast-in-place walls (2). A sealing strip (5) is applied to one side of each fireproof sealant (4). Two backing materials (6) are embedded together on the rear sides of both the precast exterior wall (1) and the cast-in-place walls (2). One side of each backing material (6) has a sealing strip (5). Waterproof adhesive (7) is provided on the side. A drainage channel is provided between the precast exterior wall (1) and the cast-in-place wall (2). Drainage holes are provided at the bottom and sides of the drainage channel. Two sets of several first tenon blocks (8) are fixedly connected to both sides of the precast exterior wall (1). Two sets of several second tenon blocks (9) that are compatible with the first tenon blocks (8) are fixedly connected to the side of the cast-in-place wall (2) near the precast exterior wall (1). Waterproof structures (10) are provided on the front and rear sides of the precast exterior wall (1) and the cast-in-place wall (2).

2. A waterproof structure for prefabricated buildings according to claim 1, characterized in that: The waterproof structure (10) includes an innermost waterproof layer (101), a protective layer (102) is provided on one side of the waterproof layer (101), and a water-facing layer (103) is provided on one side of the protective layer (102).

3. A waterproof structure for prefabricated buildings according to claim 1, characterized in that: The front and rear sides of the precast exterior wall (1) and the cast-in-place wall (2) are both provided with polymer interlocking joint strips (11). The polymer interlocking joint strips (11) are located on one side of the waterproof adhesive (7) and the sealing strip (5), respectively. The polymer interlocking joint strips (11) are compatible with the precast exterior wall (1) and the cast-in-place wall (2).

4. A waterproof structure for prefabricated buildings according to claim 1, characterized in that: Both the precast exterior wall (1) and the cast-in-place wall (2) have a sealing groove (12) on one side that is compatible with the fireproof adhesive (4), sealing strip (5), backing material (6) and waterproof adhesive (7).

5. A waterproof structure for prefabricated buildings according to claim 1, characterized in that: A number of reinforcing ribs (13) are provided through one side of the building sealant (3), and the two ends of the reinforcing ribs (13) are respectively inserted into the inner cavity of the precast exterior wall (1) and the cast-in-place wall (2).

6. A method of using a waterproof structure for prefabricated buildings, characterized in that: Includes the following steps: Step 1: Using the combination of prefabricated exterior wall (1) and cast-in-place wall (2), a stable wall structure is formed by the cooperation and connection of the first tenon block (8) and the second tenon block (9), which ensures the stability of the structure and provides a foundation for subsequent waterproofing treatment, making the assembly process more convenient and reducing the time and difficulty of on-site construction. Step 2: The building sealant (3) is applied to the opposite side of the precast exterior wall (1) and the cast-in-place wall (2), filling the tiny gap between them and providing a preliminary sealing effect. The through-setting of the reinforcing ribs (13) further enhances the adhesion and tensile strength of the building sealant (3), ensuring a long-lasting sealing effect. Step 3: Fireproof adhesive (4) and sealing strip (5) are embedded together on the front side of the precast exterior wall (1) and the cast-in-place wall (2). Fireproof adhesive (4) provides a fire barrier, while sealing strip (5) further enhances the sealing performance of the joint. The two work together to be both fireproof and waterproof. Step 4: Backing material (6) and waterproof adhesive (7) are placed on the back of the precast exterior wall (1) and the cast-in-place wall (2). Backing material (6) provides structural support, and waterproof adhesive (7) further seals the joints to prevent water penetration. Step 5: The waterproof layer (101) is located on the innermost side and is in direct contact with the precast exterior wall (1) and the cast-in-place wall (2), providing basic waterproof protection. The protective layer (102) covers the outside of the waterproof layer (101) and plays a role in protecting the waterproof layer (101) from external physical damage. The water-facing layer (103) faces the external environment and directly resists the intrusion of external moisture, forming a multi-layer protection system. The polymer interlocking joint tape (11) is set on one side of the waterproof adhesive (7) and the sealing strip (5), and is compatible with the precast exterior wall (1) and the cast-in-place wall (2), which enhances the interlocking force at the joint and ensures the tightness and waterproof performance of the joint.

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