Flat joint waterproof structure of roof deformation joint

Abstract

The application relates to the technical field of deformation joints, and discloses a deformation joint between a first wall body and a second wall body. The flat joint waterproof structure of the roof deformation joint is designed in cooperation of a composite waterproof assembly and a dynamic mechanical sealing assembly, the waterproof performance and service life of the deformation joint are remarkably improved, a three-element ethylene propylene rubber layer and a silicone sealant layer at the bottom of the deformation joint form primary flexible sealing, small deformation of the joint body is adapted, microcapsules uniformly distributed in a polyurethane waterproof layer release water-swelling resin when cracks appear, leakage channels are actively filled, the effect of self-repairing is realized, a reverse V-shaped cover plate is elastically supported by deformable rubber columns and springs, stability is maintained during horizontal displacement or settlement, the effect of dynamic sealing is realized, water accumulation is prevented from seeping in, and the polyurethane waterproof layer and the dynamic mechanical sealing assembly are combined, so that the leakage risk caused by material aging can be effectively reduced.

Description

Technical Field

[0001] This application relates to the field of expansion joint technology, specifically a flat joint waterproof structure for roof expansion joints. Background Technology

[0002] Expansion joints are a general term for expansion joints, settlement joints, and seismic joints. Buildings often deform under the influence of external factors, leading to cracks or even damage. Expansion joints are structural joints reserved for this situation. After the expansion joints are reserved on the roof of a building, a waterproof structure needs to be built on the expansion joints for waterproofing, fireproofing, aesthetics, and safety requirements.

[0003] An existing patent (publication number: CN216075977U) discloses a waterproof structure for roof expansion joints, including two building structures and an expansion joint between them. A waterproof mechanism is connected to both building structures. This mechanism includes two water-guiding blocks, a cover plate, a waterstop, and two side plates. The two water-guiding blocks are fixedly connected to the top of their respective building structures. The two side plates are connected to their respective water-guiding blocks via a fixing mechanism. The cover plate is connected to the side plates via several sets of sliding mechanisms. The two ends of the waterstop are located on their respective water-guiding blocks. This invention achieves waterproofing and water-guiding functions through the cover plate and water-guiding blocks, ensuring the sealing of the expansion joint and providing good waterproofing. The sliding mechanisms support the cover plate, allowing it to maintain good waterproofing and water-guiding capabilities even after deformation, thus extending the cover plate's service life, saving on materials used in its manufacture, and being more energy-efficient and environmentally friendly.

[0004] The aforementioned comparative documents are prone to failure due to material aging after prolonged use. In order to further optimize the performance and service life of the waterproof structure, a flat joint waterproof structure for roof expansion joints is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a flat-joint waterproof structure for roof expansion joints. Through the combined use of elastic sealing, self-healing, and dynamic mechanical sealing, a triple waterproofing effect is achieved, and the service life of the waterproof structure is extended.

[0006] To achieve the above objectives, this application provides the following technical solution: a flat-joint waterproof structure for roof expansion joints, comprising a first wall and a second wall, and an expansion joint formed between the first wall and the second wall. A composite waterproof component is provided in the expansion joint, and a dynamic mechanical seal component is provided above the expansion joint. The dynamic mechanical seal component includes two positioning bases and an inverted V-shaped cover plate. Two deformable rubber columns are installed on the upper surface of each positioning base, and the inverted V-shaped cover plate is installed above the two positioning bases through four deformable rubber columns.

[0007] The composite waterproof component includes an EPDM rubber layer filled at the bottom of the expansion joint, a silicone sealant layer fixedly connected to the upper surface of the EPDM rubber layer, a polyurethane waterproof layer on the upper surface of the silicone sealant layer, and a uniformly distributed microcapsule filled inside the polyurethane waterproof layer. Each microcapsule contains water-swellable resin. The two sides of the polyurethane waterproof layer are located on the upper surfaces of the first wall and the second wall, respectively. A polymer waterproof membrane is laid between the first wall and the second wall, with the polymer waterproof membrane located above the polyurethane waterproof layer.

[0008] The above solution, through the synergistic design of composite waterproof components and dynamic mechanical seal components, significantly improves the waterproof performance and service life of expansion joints. The EPDM rubber layer and silicone sealant layer filling the bottom of the expansion joint form a primary flexible seal, adapting to minor deformations of the joint. Microcapsules evenly distributed within the polyurethane waterproof layer release water-swelling resin when cracks appear, actively filling leakage channels and achieving a self-healing effect. The inverted V-shaped cover plate, supported by the elasticity of deformable rubber columns, remains stable during horizontal displacement or settlement, achieving a dynamic sealing effect and preventing water seepage. Furthermore, the combination of the polyurethane waterproof layer and the dynamic mechanical seal components effectively reduces the risk of leakage caused by material aging and extends service life. Therefore, this solution achieves a balance between waterproof performance and dynamic adaptability, making it particularly suitable for building roofs in high deformation frequencies or harsh environments.

[0009] Furthermore, both the polyurethane waterproof layer and the polymer waterproof membrane have multiple first positioning holes on their upper surfaces.

[0010] The above scheme allows for convenient positioning and fixing of the polyurethane waterproof layer and polymer waterproof membrane through the first positioning hole.

[0011] Furthermore, each of the four corners of the positioning base is equipped with a first fixing bolt, and the two positioning bases position the polyurethane waterproof layer and the polymer waterproof membrane on the upper surface of the first wall and the second wall through the first fixing bolt and the first positioning hole.

[0012] The above scheme allows the positioning base to position the polyurethane waterproof layer and the polymer waterproof membrane on the upper surfaces of the first and second walls using the first fixing bolt.

[0013] Furthermore, the upper surface of the inverted V-shaped cover plate has four connecting holes, and the four deformable rubber pillars are respectively inserted into the four connecting holes. Each deformable rubber pillar has a nut threadedly connected to its top.

[0014] With the above solution, the deformable rubber columns can be easily inserted into the opening through the connection holes, and the inverted V-shaped cover plate can be positioned on top of the four deformable rubber columns by nuts.

[0015] Furthermore, each of the deformable rubber columns is fitted with a spring on its exterior, the bottom ends of the four springs are fixedly connected to the upper surfaces of the two positioning bases, and the top ends of the four springs are in contact with the bottom surface of the inverted V-shaped cover plate.

[0016] The above solution utilizes the cooperation of deformable rubber columns and springs. When the expansion joint deforms, the deformable rubber columns move along with it, causing them to deform as well. The springs provide a restoring force for the deformable rubber columns to return to their original position, thus enabling the inverted V-shaped cover to dynamically adapt to deformation and optimizing its performance.

[0017] Furthermore, guide blocks are fixedly connected to the upper surfaces of both positioning bases, and the two guide blocks are respectively located below the two sides of the inverted V-shaped cover plate.

[0018] The above solution allows the drainage block to work in conjunction with the inverted V-shaped cover plate to reduce the chance of water entering the expansion joint, thereby optimizing the waterproofing effect.

[0019] Furthermore, two second positioning holes are provided on the upper surfaces of both the first wall and the second wall.

[0020] The above solution allows for convenient positioning and installation of other components through the second positioning hole.

[0021] Furthermore, each of the two positioning bases has an L-shaped side plate fixedly connected to its opposite side. Each L-shaped side plate has two second positioning bolts installed inside. The two L-shaped side plates are positioned on the upper surfaces of the first wall and the second wall through the second positioning holes and the second positioning bolts.

[0022] The above solution, with its L-shaped side plate, second positioning hole, and second positioning bolt, not only improves the sealing effect at the edge of the positioning base but also enhances its stability, making it more practical.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects: This flat-joint waterproofing structure for roof expansion joints significantly improves the waterproofing performance and service life of expansion joints through the synergistic design of composite waterproofing components and dynamic mechanical seal components. The EPDM rubber layer and silicone sealant layer filling the bottom of the expansion joint form a primary flexible seal, adapting to minor deformations of the joint. Microcapsules evenly distributed within the polyurethane waterproofing layer release water-swelling resin when cracks appear, actively filling leakage channels and achieving a self-healing effect. The inverted V-shaped cover plate, supported by deformable rubber columns and springs, remains stable during horizontal displacement or settlement, achieving a dynamic sealing effect and preventing water seepage. Furthermore, the combination of the polyurethane waterproofing layer and the dynamic mechanical seal components effectively reduces the risk of leakage caused by material aging and extends service life. Therefore, this solution achieves a balance between waterproofing performance and dynamic adaptability, making it particularly suitable for building roofs in high deformation frequencies or harsh environments. Attached Figure Description

[0024] Figure 1 This is a top view of the overall structure of this application. Figure 2 This is a schematic diagram of the overall planar structure of the present application. Figure 3 This is a schematic diagram of the overall exploded structure of the present application. Figure 4 This is a first partial top view of the structure of this application; Figure 5 This is a top view of the second part of the structure of this application.

[0025] In the picture: 1. First wall; 2. Second wall; 3. Expansion joint; 4. Composite waterproof component; 401. EPDM rubber layer; 402. Silicone sealant layer; 403. Polyurethane waterproof layer; 404. Microcapsule; 405. Polymer waterproof membrane; 406. First positioning hole; 5. Dynamic mechanical seal component; 501. Positioning base; 502. First fixing bolt; 503. Deformable rubber column; 504. Spring; 505. Inverted V-shaped cover plate; 506. Connecting hole; 507. Nut; 508. Guide block; 509. L-shaped side plate; 510. Second positioning hole; 511. Second positioning bolt. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] Please see Figure 1, Figure 2 and Figure 3 This embodiment provides a flat-joint waterproofing structure for roof expansion joints, including a first wall 1, a second wall 2, and an expansion joint 3 formed between the first wall 1 and the second wall 2. A composite waterproofing component 4 is provided in the expansion joint 3, and a dynamic mechanical seal component 5 is provided above the expansion joint 3. The dynamic mechanical seal component 5 includes two positioning bases 501 and an inverted V-shaped cover plate 505. Two deformable rubber columns 503 are installed on the upper surface of each positioning base 501. The inverted V-shaped cover plate 505 is installed above the two positioning bases 501 via four deformable rubber columns 503. The inverted V-shaped cover plate 505 directly waterproofs the expansion joint 3, making it more practical.

[0028] Please see Figure 1 , Figure 2 and Figure 5 The composite waterproof component 4 includes an EPDM rubber layer 401 filled at the bottom of the expansion joint 3. A silicone sealant layer 402 is fixedly connected to the upper surface of the EPDM rubber layer 401. The EPDM rubber layer 401 and the silicone sealant layer 402 work together to form a primary flexible seal, adapting to minor deformations of the joint. A polyurethane waterproof layer 403 is provided on the upper surface of the silicone sealant layer 402. The interior of the polyurethane waterproof layer 403 is filled with uniformly distributed microcapsules 404. Each microcapsule 404 contains water-swellable resin. When a crack occurs, the microcapsule 404 will automatically rupture, releasing the water-swellable resin. The resin expands rapidly upon contact with water, effectively sealing the seepage channels and achieving a self-healing effect. The polyurethane waterproof layer 403 is located on both sides of the upper surfaces of the first wall 1 and the second wall 2, respectively. A polymer waterproof membrane 405 is laid between the first wall 1 and the second wall 2, with the polymer waterproof membrane 405 positioned above the polyurethane waterproof layer 403. Multiple first positioning holes 406 are provided on the upper surfaces of both the polyurethane waterproof layer 403 and the polymer waterproof membrane 405. These first positioning holes 406 facilitate subsequent positioning and fixing of the polyurethane waterproof layer 403 and the polymer waterproof membrane 405.

[0029] Please see Figure 1 , Figure 2 and Figure 3Each positioning base 501 has a first fixing bolt 502 installed at each of its four corners. The two positioning bases 501, through the first fixing bolts 502 and the first positioning holes 406, position the polyurethane waterproof layer 403 and the polymer waterproof membrane 405 on the upper surfaces of the first wall 1 and the second wall 2. The first fixing bolts 502 allow the positioning bases 501 to position the polyurethane waterproof layer 403 and the polymer waterproof membrane 405 on the upper surfaces of the first wall 1 and the second wall 2. The upper surface of the inverted V-shaped cover plate 505 has four connecting holes 506. Four deformable rubber pillars 503 are inserted into the four connecting holes 506 respectively. Each deformable rubber pillar 503 has a nut 507 threaded onto its top. The connecting holes 506 allow for easy insertion of the deformable rubber pillar 503, and the nuts 507 secure the inverted V-shaped cover plate. The cover plate 505 is positioned on top of four deformable rubber pillars 503, which allows the inverted V-shaped cover plate 505 to be easily disassembled and assembled, thus facilitating later maintenance. Each deformable rubber pillar 503 is fitted with a spring 504. The bottom ends of the four springs 504 are respectively fixedly connected to the upper surfaces of the two positioning bases 501, and the top ends of the four springs 504 are in contact with the bottom surface of the inverted V-shaped cover plate 505. Through the cooperation of the deformable rubber pillars 503 and the springs 504, when the expansion joint 3 deforms, the deformable rubber pillars 503 will move along with it, thus deforming the deformable rubber pillars 503. The springs 504 can provide a restoring force for the deformable rubber pillars 503 to return to their original position, thereby enabling the inverted V-shaped cover plate 505 to dynamically adapt to deformation, thus optimizing the performance of the inverted V-shaped cover plate 505.

[0030] Please see Figure 1 , Figure 3 and Figure 4 Two guide blocks 508 are fixedly connected to the upper surfaces of the two positioning bases 501. The two guide blocks 508 are located below the inverted V-shaped cover plate 505 on both sides. The guide blocks 508 can cooperate with the inverted V-shaped cover plate 505 to reduce the probability of water entering the expansion joint 3, thereby optimizing the waterproofing effect. Two second positioning holes 510 are opened on the upper surfaces of the first wall 1 and the second wall 2. The second positioning holes 510 facilitate the positioning and installation of other components. Each of the two L-shaped side plates 509 is fixedly connected to the opposite side. Each L-shaped side plate 509 has two second positioning bolts 511 installed inside. The two L-shaped side plates 509 are positioned on the upper surface of the first wall 1 and the second wall 2 through the second positioning holes 510 and the second positioning bolts 511. The L-shaped side plates 509, the second positioning holes 510 and the second positioning bolts 511 can improve the sealing effect at the edge of the positioning base 501 and improve the stability of the positioning base 501, making it more practical.

[0031] In this embodiment, a flat-joint waterproof structure for roof expansion joints significantly improves the waterproof performance and service life of the expansion joint 3 through the synergistic design of the composite waterproof component 4 and the dynamic mechanical seal component 5. The EPDM rubber layer 401 filled at the bottom of the expansion joint 3 and the silicone sealant layer 402 form a primary flexible seal, adapting to minor deformations of the joint. Microcapsules 404 uniformly distributed within the polyurethane waterproof layer 403 release water-swelling resin when cracks appear, actively filling leakage channels and achieving a self-repairing effect. The inverted V-shaped cover plate 505, supported by the elasticity of the deformable rubber column 503 and the spring 504, remains stable during horizontal displacement or settlement, achieving a dynamic sealing effect and preventing water seepage. Furthermore, the combination of the polyurethane waterproof layer 403 and the dynamic mechanical seal component 5 effectively reduces the risk of leakage caused by material aging and extends service life. Therefore, this solution achieves a balance between waterproof performance and dynamic adaptability, and is particularly suitable for building roofs in high deformation frequencies or harsh environments.

[0032] The working principle of the above embodiment is as follows: When the expansion joint 3 is subjected to external forces such as temperature changes, settlement, or vibration, it will deform. When the expansion joint 3 expands or settles, the bottom EPDM rubber layer 401 first absorbs the initial displacement through its own elastic deformation. The silicone sealant layer 402 on it further fills the micro gaps to form a primary waterproof barrier. The microcapsules 404 embedded in the polyurethane waterproof layer 403 will automatically rupture when cracks occur. The released water-swellable resin will rapidly increase in volume after contact with water, effectively sealing the seepage channels. At the same time, the polymer waterproof membrane 405 covering the polyurethane waterproof layer 403 has a V-shaped suspended design to reserve deformation space, and its two sides are positioned by positioning bases 50. The first fixing bolt 502 is fixed to the upper surface of the first wall 1 and the second wall 2. When the joint continues to deform, the deformable rubber column 503 connected to the inverted V-shaped cover plate 505 will deflect or compress. The externally sleeved spring 504 will then generate a reverse force, so that the inverted V-shaped cover plate 505 can adapt to the deformation of the deformation joint 3. The water guiding system composed of the guide block 508 and the L-shaped side plate 509 will quickly guide the surface runoff away from the deformation area. This series of linkage mechanisms enable the structure to handle micro-leakage through the material self-healing function and cope with macro-deformation through the mechanical sealing system within the range of horizontal displacement and vertical settlement, and finally achieve a durable sealing effect of the flat joint waterproof structure under dynamic working conditions.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flat-joint waterproof structure for roof expansion joints, comprising a first wall (1) and a second wall (2) and an expansion joint (3) formed between the first wall (1) and the second wall (2), characterized in that: The expansion joint (3) is provided with a composite waterproof component (4), and a dynamic mechanical seal component (5) is provided above the expansion joint (3). The dynamic mechanical seal component (5) includes two positioning bases (501) and an inverted V-shaped cover plate (505). Two deformable rubber columns (503) are installed on the upper surface of each positioning base (501). The inverted V-shaped cover plate (505) is installed above the two positioning bases (501) through four deformable rubber columns (503). The composite waterproof component (4) includes an EPDM rubber layer (401) filled at the bottom of the expansion joint (3), a silicone sealant layer (402) fixedly connected to the upper surface of the EPDM rubber layer (401), a polyurethane waterproof layer (403) provided on the upper surface of the silicone sealant layer (402), a uniformly distributed microcapsule (404) filled inside the polyurethane waterproof layer (403), each of the microcapsules (404) containing water-swellable resin, the two sides of the polyurethane waterproof layer (403) located on the upper surfaces of the first wall (1) and the second wall (2) respectively, a polymer waterproof membrane (405) laid between the first wall (1) and the second wall (2), the polymer waterproof membrane (405) located above the polyurethane waterproof layer (403).

2. The flat joint waterproof structure for roof expansion joints according to claim 1, characterized in that: The upper surfaces of the polyurethane waterproof layer (403) and the polymer waterproof membrane (405) are provided with a plurality of first positioning holes (406).

3. The flat joint waterproof structure for roof expansion joints according to claim 2, characterized in that: Each of the four corners of the positioning base (501) is equipped with a first fixing bolt (502). The two positioning bases (501) use the first fixing bolt (502) and the first positioning hole (406) to position the polyurethane waterproof layer (403) and the polymer waterproof membrane (405) on the upper surface of the first wall (1) and the second wall (2).

4. The flat joint waterproof structure for roof expansion joints according to claim 1, characterized in that: The upper surface of the inverted V-shaped cover plate (505) is provided with four connecting holes (506), and the four deformable rubber columns (503) are respectively inserted into the four connecting holes (506). Each deformable rubber column (503) has a nut (507) threadedly connected to its top.

5. The flat joint waterproof structure for roof expansion joints according to claim 1, characterized in that: Each of the deformable rubber columns (503) is fitted with a spring (504) on its outside. The bottom ends of the four springs (504) are fixedly connected to the upper surfaces of the two positioning bases (501), and the top ends of the four springs (504) are in contact with the bottom surface of the inverted V-shaped cover plate (505).

6. The flat joint waterproofing structure for roof expansion joints according to claim 1, characterized in that: The upper surfaces of the two positioning bases (501) are fixedly connected with guide blocks (508), and the two guide blocks (508) are located below the two sides of the inverted V-shaped cover plate (505).

7. The flat joint waterproof structure for roof expansion joints according to claim 1, characterized in that: Two second positioning holes (510) are opened on the upper surface of the first wall (1) and the second wall (2).

8. The flat joint waterproof structure for roof expansion joints according to claim 7, characterized in that: Two positioning bases (501) are fixedly connected to L-shaped side plates (509) on their opposite sides. Each L-shaped side plate (509) has two second positioning bolts (511) installed inside. The two L-shaped side plates (509) are positioned on the upper surfaces of the first wall (1) and the second wall (2) through the second positioning holes (510) and the second positioning bolts (511).

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