Waterproof structure of fabricated external wall panel connecting joint

Abstract

The utility model relates to the technical field of external wall panel waterproof structures, in particular to a waterproof structure of an assembly type external wall panel connecting node, which comprises a first external wall panel, a cast-in-place connecting plate and a second external wall panel which are sequentially arranged from bottom to top, and an overhanging connecting rib is arranged at the top of the first external wall panel and extends into the cast-in-place connecting plate; a connecting groove is formed in the bottom of the second external wall panel, a connecting block is arranged on the top of the cast-in-place connecting plate and embedded into the connecting groove, and a waterproof assembly is arranged between the bottom of the second external wall panel and the top of the cast-in-place connecting plate. The overhanging connecting rib, the connecting block and the waterproof assembly have high use stability, and long-term stable use can be ensured.

Description

Technical Field

[0001] This application relates to the field of waterproof structure technology for exterior wall panels, and in particular to a waterproof structure for the connection node of prefabricated exterior wall panels. Background Technology

[0002] Prefabricated exterior wall panels refer to wall materials that are prefabricated and then transported directly to the construction site for assembly and installation. Therefore, the connection joints of prefabricated exterior wall panels need to have reliable waterproof performance to prevent rainwater from seeping into the room along the splicing joints of the exterior wall panels.

[0003] The patent announcement number CN222500675U discloses a waterproof connection node structure for prefabricated modular wall panels, comprising two prefabricated wall panel bodies and a connecting mechanism. The two prefabricated wall panel bodies are snapped together by the connecting mechanism. The connecting mechanism includes a connecting seat, on both sides of the outer surface of the connecting seat, four positioning rods are slidably fitted. A disc is fixedly connected to the outer surface of each positioning rod, and a telescopic spring is fixedly connected to the outer surface of each disc. Connecting slots are provided at both the top and bottom ends of each prefabricated wall panel body, and two first positioning holes are provided on both sides of the outer surface of each connecting slot. The connecting mechanism allows for rapid assembly of the two prefabricated wall panel bodies, and the connecting slots improve the waterproof sealing of the connection node between the two prefabricated wall panel bodies.

[0004] However, the positioning rods, discs, and telescopic springs of the existing connecting mechanisms are prone to rust and damage after long-term use and exposure to rain, leading to instability of the connecting mechanism and failure of the waterproofness of the connecting nodes. Utility Model Content

[0005] To improve the connection stability and waterproofing stability of the connection nodes, this application provides a waterproof structure for the connection nodes of prefabricated exterior wall panels.

[0006] The above-mentioned objective of this application is achieved through the following technical solution:

[0007] A waterproof structure for a prefabricated exterior wall panel connection node includes a first exterior wall panel, a cast-in-place connecting plate, and a second exterior wall panel arranged sequentially from bottom to top. The first exterior wall panel has an outwardly extending connecting bar at its top, which extends into the interior of the cast-in-place connecting plate. The second exterior wall panel has a connecting groove at its bottom, and the cast-in-place connecting plate has a connecting block at its top, which is embedded in the connecting groove. A waterproof component is provided between the bottom of the second exterior wall panel and the top of the cast-in-place connecting plate.

[0008] Optionally, the height of the connecting block exposed above the cast-in-place connecting slab is greater than the depth of the connecting groove, so that a connecting joint is formed between the bottom of the second exterior wall panel and the top of the cast-in-place connecting slab. The waterproof component includes a weather-resistant sealant layer and a waterproof mortar layer. The weather-resistant sealant layer is disposed at the connecting joint and is located on the side of the connecting block closer to the outdoor space. The waterproof mortar layer is disposed at the connecting joint and is located on the side of the connecting block closer to the indoor space.

[0009] Optionally, the width of the joint is 15-20mm.

[0010] Optionally, the thickness of the second outer wall panel is three times the thickness of the connecting block, and the center surface of the second outer wall panel is aligned with the center surface of the connecting block.

[0011] Optionally, the connecting block is a precast concrete block, and the bottom of the connecting block is located at the top of the extended connecting bar.

[0012] Optionally, the extended connecting bar includes a first group of reinforcing bars and a second group of reinforcing bars, the first group of reinforcing bars and the second group of reinforcing bars are arranged in parallel, and the top of the first group of reinforcing bars and the top of the second group of reinforcing bars are both bent inward to form a connecting part. The bottom of the connecting block is provided with a connecting hole, and the connecting part is inserted into the connecting hole.

[0013] Optionally, the extended connecting bar includes a first group of reinforcing bars and a second group of reinforcing bars, the first group of reinforcing bars and the second group of reinforcing bars are arranged in parallel, the bottom of the connecting block is provided with connecting reinforcing bars, and both the first group of reinforcing bars and the second group of reinforcing bars are connected to the connecting reinforcing bars.

[0014] Optionally, PE rods are provided on the side of the weather-resistant sealant layer and the waterproof mortar layer near the connecting block.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] The extended connecting bars can enhance the connection stability between the first exterior wall panel and the cast-in-place connecting slab, the connecting blocks can enhance the connection stability between the second exterior wall panel and the cast-in-place connecting slab, and the waterproof components can enhance the waterproof sealing between the second exterior wall panel and the cast-in-place connecting slab. Thus, the prefabricated exterior wall panel connection nodes have good connection and waterproof effects, and the extended connecting bars, connecting blocks, and waterproof components have high service stability, which can ensure long-term stable use. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the overall structure in this application.

[0018] Figure 2 yes Figure 1 A magnified view of A in the middle.

[0019] Figure 3 This is a cross-sectional view of the overall structure in this application.

[0020] Figure 4 yes Figure 3 A magnified view of B in the middle.

[0021] Explanation of reference numerals in the attached drawings: 1. First exterior wall panel; 2. Second exterior wall panel; 3. Cast-in-place connection plate; 4. Outwardly extending connecting bar; 41. First reinforcing bar group; 42. Second reinforcing bar group; 43. Connection part; 5. Connection groove; 6. Connection block; 61. Connecting reinforcing bar; 7. Waterproof component; 71. Weather-resistant sealant layer; 72. Waterproof mortar layer; 8. Connection joint; 9. PE rod. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1 to 4 This application will be described in further detail.

[0023] Example 1:

[0024] This application discloses a waterproof structure for the connection node of prefabricated exterior wall panels.

[0025] Reference Figure 1-2 The waterproof structure of the prefabricated exterior wall panel connection node includes a first exterior wall panel 1, a cast-in-place connecting plate 3, and a second exterior wall panel 2 arranged sequentially from bottom to top. The first exterior wall panel 1 and the second exterior wall panel 2 are prefabricated in advance, while the cast-in-place connecting plate 3 is formed by casting. The specific installation steps are as follows: S1, fix and install the prefabricated first exterior wall panel 1; S2, set the cast-in-place connecting plate 3 on the top of the first exterior wall panel 1; S3, after the cast-in-place connecting plate 3 has solidified, fix and install the prefabricated second exterior wall panel 2 on the top of the cast-in-place connecting plate 3.

[0026] In this embodiment, an outward connecting bar 4 is provided at the top of the first outer wall panel 1. Specifically, the first outer wall panel 1 contains a steel cage, and some of the steel bars in the steel cage extend outward from the top of the first outer wall panel 1, thus forming the outward connecting bar 4 at the top of the first outer wall panel 1. During the process of setting the cast-in-place connecting plate 3 at the top of the first outer wall panel 1 by casting, the outward connecting bar 4 is wrapped by the cast-in-place connecting plate 3, that is, the outward connecting bar 4 extends into the interior of the cast-in-place connecting plate 3, thereby strengthening the connection stability between the first outer wall panel 1 and the cast-in-place connecting plate 3. In addition, a connecting block 6 is provided at the top of the cast-in-place connecting plate 3 by pre-embedding, and a connecting groove 5 is provided at the bottom of the second outer wall panel 2 during the prefabrication process. The connecting groove 5 and the connecting block 6 are fitted together, so that the connecting block 6 can be embedded into the connecting groove 5, thereby strengthening the connection stability between the second outer wall panel 2 and the cast-in-place connecting plate 3.

[0027] In this embodiment, the height of the connecting block 6 exposed above the cast-in-place connecting plate 3 is about 20mm greater than the depth of the connecting groove 5, so that a 20mm connecting joint 8 is formed between the bottom of the second outer wall panel 2 and the top of the cast-in-place connecting plate 3. A waterproof component 7 is provided inside the connecting joint 8 between the bottom of the second outer wall panel 2 and the top of the cast-in-place connecting plate 3. The waterproof component 7 specifically includes a weather-resistant sealant layer 71 and a waterproof mortar layer 72. The weather-resistant sealant layer 71 is applied to the connecting joint 8 by post-application, and the weather-resistant sealant layer 71 is located on the side of the connecting block 6 closer to the outdoor space. The waterproof mortar layer 72 is applied to the connecting joint 8 by sealing, and the waterproof mortar layer 72 is located on the side of the connecting block 6 closer to the indoor space.

[0028] In the above, the extended connecting rib 4 can enhance the connection stability between the first exterior wall panel 1 and the cast-in-place connecting plate 3, the connecting block 6 can enhance the connection stability between the second exterior wall panel 2 and the cast-in-place connecting plate 3, and the waterproof component 7 can enhance the waterproof sealing between the second exterior wall panel 2 and the cast-in-place connecting plate 3. Thus, the prefabricated exterior wall panel connection node has a better connection and waterproof effect, and the extended connecting rib 4, the connecting block 6, and the waterproof component 7 have high service stability, which can ensure long-term stable use.

[0029] In other embodiments, the width of the connecting seam 8 may be a value such as 15mm / 18mm.

[0030] In this embodiment, the thickness of the second outer wall panel 2 is 150mm, and the thickness of the connecting block 6 is 50mm. That is, the thickness of the second outer wall panel 2 is 3 times the thickness of the connecting block 6, and the center surface of the second outer wall panel 2 and the center surface of the connecting block 6 are aligned.

[0031] In this embodiment, the connecting block 6 is a precast concrete block. The bottom of the connecting block 6 is located at the top of the extended connecting bar 4. Specifically, the extended connecting bar 4 includes a first reinforcing bar group 41 and a second reinforcing bar group 42. Both the first reinforcing bar group 41 and the second reinforcing bar group 42 include multiple reinforcing bar strips arranged in a row. The first reinforcing bar group 41 and the second reinforcing bar group 42 are arranged in parallel. The top of the first reinforcing bar group 41 and the top of the second reinforcing bar group 42 are both bent inward to form a connecting part 43. The bottom of the connecting block 6 is provided with a connecting hole, and the connecting part 43 is inserted into the connecting hole. The extended connecting bar 4 provides initial positioning of the connecting block 6 to minimize the possibility of movement or deviation of the connecting block 6.

[0032] In this embodiment, PE rods 9 are provided on the side of the weather-resistant sealant layer 71 and the waterproof mortar layer 72 near the connecting block 6. The PE rods 9 are placed inside the connecting joint 8 before the weather-resistant sealant layer 71 is coated and the waterproof mortar layer 72 is sealed.

[0033] Example 2:

[0034] The difference between this embodiment and Embodiment 1 lies in the connection method between the extended connecting rib 4 and the connecting block 6.

[0035] In this embodiment, the extended connecting bar 4 also includes a first reinforcing bar group 41 and a second reinforcing bar group 42. Both the first reinforcing bar group 41 and the second reinforcing bar group 42 include multiple reinforcing bar strips arranged in a row, and the first reinforcing bar group 41 and the second reinforcing bar group 42 are arranged in parallel. During the manufacturing process, the connecting block 6 is provided with a connecting reinforcing bar 61. The connecting reinforcing bar 61 has an inverted Y-shaped structure. The connecting reinforcing bar 61 extends outward from the bottom of the connecting block and is connected to both the first reinforcing bar group and the second reinforcing bar group. The connection method can be wire binding / welding, etc. Similarly, the extended connecting bar 4 is used to initially limit the position of the connecting block 6 to avoid the connecting block 6 from moving or deviating as much as possible.

[0036] The embodiments described herein are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A waterproof structure for a prefabricated exterior wall panel connection node, characterized in that: The structure includes a first outer wall panel (1), a cast-in-place connecting plate (3), and a second outer wall panel (2) arranged sequentially from bottom to top. The top of the first outer wall panel (1) is provided with an outward connecting bar (4), which extends into the interior of the cast-in-place connecting plate (3). The bottom of the second outer wall panel (2) is provided with a connecting groove (5). The top of the cast-in-place connecting plate (3) is provided with a connecting block (6), which is embedded in the connecting groove (5). A waterproof component (7) is provided between the bottom of the second outer wall panel (2) and the top of the cast-in-place connecting plate (3).

2. The waterproof structure of the prefabricated exterior wall panel connection node according to claim 1, characterized in that: The height of the connecting block (6) exposed above the cast-in-place connecting plate (3) is greater than the depth of the connecting groove (5), so that a connecting seam (8) is formed between the bottom of the second outer wall panel (2) and the top of the cast-in-place connecting plate (3). The waterproof component (7) includes a weather-resistant sealant layer (71) and a waterproof mortar layer (72). The weather-resistant sealant layer (71) is disposed in the connecting seam (8) and is located on the side of the connecting block (6) closer to the outdoor space. The waterproof mortar layer (72) is disposed in the connecting seam (8) and is located on the side of the connecting block (6) closer to the indoor space.

3. The waterproof structure of the prefabricated exterior wall panel connection node according to claim 2, characterized in that: The width of the connecting seam (8) is 15-20mm.

4. The waterproof structure of the prefabricated exterior wall panel connection node according to claim 2, characterized in that: The thickness of the second outer wall panel (2) is three times the thickness of the connecting block (6), and the center surface of the second outer wall panel (2) is aligned with the center surface of the connecting block (6).

5. The waterproof structure of the prefabricated exterior wall panel connection node according to claim 1, characterized in that: The connecting block (6) is a precast concrete block, and the bottom of the connecting block (6) is located on the top of the outward connecting bar (4).

6. The waterproof structure of a prefabricated exterior wall panel connection node according to claim 5, characterized in that: The extended connecting bar (4) includes a first steel bar group (41) and a second steel bar group (42). The first steel bar group (41) and the second steel bar group (42) are arranged in parallel, and the top of the first steel bar group (41) and the top of the second steel bar group (42) are both bent inward to form a connecting part (43). The bottom of the connecting block (6) is provided with a connecting hole, and the connecting part (43) is inserted into the connecting hole.

7. The waterproof structure of the prefabricated exterior wall panel connection node according to claim 5, characterized in that: The extended connecting bar (4) includes a first bar group (41) and a second bar group (42), the first bar group (41) and the second bar group (42) are arranged in parallel, the bottom of the connecting block (6) is provided with a connecting bar (61), and the first bar group (41) and the second bar group (42) are both connected to the connecting bar (61).

8. The waterproof structure of the prefabricated exterior wall panel connection node according to claim 2, characterized in that: Both the weather-resistant sealant layer (71) and the waterproof mortar layer (72) have PE rods (9) on the side near the connecting block (6).

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