Waterproof joint at top of integrated external wall plate parapet

By using a cast-in-place integrated parapet wall structure and an inclined design, the problem of water seepage at the top waterproof joint of the parapet wall was solved, achieving a high level of waterproof performance improvement and material protection.

CN224325966UActive Publication Date: 2026-06-05ZHEJIANG ELECTRIC POWER DESIGN INST

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG ELECTRIC POWER DESIGN INST
Filing Date
2025-05-23
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

In existing technologies, the waterproof joints at the top of the parapet wall of integrated exterior wall panels have water seepage problems, and the moisture that seeps into the wall panel cannot be effectively discharged, affecting the performance of the wall panel.

Method used

The parapet wall structure is made of cast-in-place concrete, combined with the inclined second wall panel, flashing and waterproof membrane to form an overall waterproof joint. The inclined and inward folding design guides rainwater to the roof, preventing water seepage through gaps, and the high waterproof performance of concrete is used to improve the waterproof effect.

Benefits of technology

It effectively reduces the risk of leakage at waterproof joints, improves waterproof performance, prevents moisture from accumulating inside the wall panel, enhances material strength and water tightness, and improves the concealment and durability of weak points in waterproofing.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224325966U_ABST
    Figure CN224325966U_ABST
Patent Text Reader

Abstract

The utility model discloses integrated parapet wall top waterproof joint of outer wall board, include: outer wall board, integrated parapet wall, including first section wall board and second section wall board, first section wall board is located in the inner side of outer wall board, second section wall board is located in the top of outer wall board and is in the form of cladding, cast-in-place roof, which is provided with waterproof roll material, wherein, first section wall board bottom is connected with cast-in-place roof, the utility model changes the connecting mode of waterproof joint, and the splicing of traditional flanging metal plate adopts sealant, and the long -term service life is limited, and the cast-in-place concrete can make the parapet wall top form a whole, reduce the risk of leakage, change the shape and relative position relation of waterproof joint, reduce the pressure of water vapor to waterproof joint, improve waterproof performance, and also have certain protection effect to outer wall board.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to the waterproof joint at the top of the parapet wall of an integrated exterior wall panel. Background Technology

[0002] Integrated exterior wall panels are widely used in prefabricated substations. Due to their special nature, substations have electrical equipment that is highly sensitive to moisture, thus requiring higher waterproofing performance from the exterior wall panels compared to ordinary buildings. The waterproofing structure of ordinary integrated panels at the top of the parapet wall typically uses folded metal plates (aluminum or profiled steel plates) to cover the joints. Because the length of the folded metal plates is limited, seams are unavoidable at this waterproofing joint. These seams are usually treated as flat joints filled with weather-resistant sealant. Over time, due to the effects of thermal expansion and contraction, water seepage easily occurs at these seams. Furthermore, the moisture that seeps into the wall panel has no outlet, causing it to accumulate inside the panel over time, affecting its performance and leading to water seepage inside the room. Utility Model Content

[0003] The main purpose of this utility model is to provide an integrated waterproof joint at the top of the parapet wall of an exterior wall panel, aiming to solve existing technical problems.

[0004] To achieve the above objectives, this utility model provides an integrated exterior wall panel parapet top waterproof joint, comprising:

[0005] Exterior wall panels;

[0006] An integrated parapet wall includes a first wall panel and a second wall panel. The first wall panel is located inside the outer wall panel, and the second wall panel is located on top of the outer wall panel and is in a covering shape.

[0007] A cast-in-place roof with a waterproof membrane installed on it, wherein the bottom of the first section of the wall panel is connected to the cast-in-place roof.

[0008] Furthermore, the top surface of the second wall panel slopes downward toward the inner side of the outer wall panel, and the end of the second wall panel located on the outer side of the outer wall panel has an inward fold, which slopes downward toward the outer side of the outer wall panel.

[0009] Furthermore, the end of the waterproof membrane extends upwards and extends between the first section of the wall panel and the outer wall panel.

[0010] Furthermore, it also includes flashing, with both ends connected to the first section of wall panel and the cast-in-place roof respectively, and the flashing is set at an angle.

[0011] Furthermore, the flashing includes a first vertical part, an inclined part, and a second vertical part connected in sequence. The first vertical part is connected to the first section of the wall panel, the second vertical part is inserted into the cast-in-place roof, and the inclined part and the second vertical part are provided with a horizontal part that fits into the cast-in-place roof.

[0012] Furthermore, the first vertical part has an oblique insertion part at its end, which extends into the first section of the wall panel.

[0013] Furthermore, a sealant is provided at the joint between the inner fold and the outer wall panel.

[0014] Furthermore, the second section of the wall panel has a cantilever structure on the outer side of the outer wall panel.

[0015] Furthermore, the integrated parapet wall is cast in one piece of concrete.

[0016] The beneficial effects of this utility model are reflected in:

[0017] This invention changes the connection method of waterproof joints. Traditional splicing of folded metal plates uses sealant, which has a limited service life. Replacing it with cast-in-place concrete can form a whole at the top of the parapet wall, reducing the risk of leakage.

[0018] This utility model features a cantilever, which moves the waterproofing node from the top to the side. Firstly, it avoids the impact of rainwater directly washing over the weak point in the waterproofing. Secondly, the new location is more concealed, reducing the overall water volume at the weak point. Thirdly, the change in location changes the relative position of the weak point and the water. In the original node, the water was on top and the waterproofing measures were below. In this new node, the waterproofing measures are on top and the water is below. The water flows down naturally under gravity and will not put pressure on the waterproofing measures located above.

[0019] This utility model uses tongue and groove joints and reasonable bevels to wrap the edges of easily damaged exterior wall panels inside the capping, protecting the weak points of the integrated exterior wall panel in terms of waterproofing, further improving the material strength and water tightness at the waterproof joints, and enhancing waterproofing performance.

[0020] This invention changes the material of the waterproof joint from a folded metal plate to cast-in-place concrete, which improves the material performance. Moreover, the waterproof performance of cast-in-place reinforced concrete is higher than that of the metal folded plate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the flashing structure of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100. Exterior wall panel; 200. Integrated parapet wall; 201. First section wall panel; 202. Second section wall panel; 203. Inward fold; 300. Cast-in-place roof; 301. Waterproof membrane; 400. Flashing; 401. First vertical section; 402. Inclined section; 403. Second vertical section; 404. Horizontal section; 405. Angled insertion section; 500. Sealant. Detailed Implementation

[0025] 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 a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0026] See Figure 1 and 2 This utility model provides an integrated exterior wall panel parapet top waterproof node, including:

[0027] Exterior wall panel 100;

[0028] The integrated parapet wall 200 includes a first wall panel 201 and a second wall panel 202. The first wall panel 201 is located inside the outer wall panel 100, and the second wall panel 202 is located on the top of the outer wall panel 100 and is in a covering shape.

[0029] A cast-in-place roof 300 is provided with a waterproof membrane 301, wherein the bottom of the first section of wall panel 201 is connected to the cast-in-place roof 300.

[0030] This embodiment changes the shape and relative position of the waterproof joints, reducing the pressure of water vapor on the waterproof joints and improving the waterproof performance. At the same time, it also provides some protection for the outer wall panel 100. The splicing of traditional folded metal panels uses sealant, which has a limited service life. Replacing it with cast-in-place concrete can form a whole at the top of the parapet wall, reducing the risk of leakage.

[0031] In one embodiment, the top surface of the second wall panel 202 is inclined downward toward the inner side of the outer wall panel 100, and the end of the second wall panel 202 located on the outer side of the outer wall panel 100 has an inward fold 203, which is inclined downward toward the outer side of the outer wall panel 100.

[0032] In this embodiment, the top surface of the second wall panel 202 is tilted downwards towards the inside of the outer wall panel 100, which can guide rainwater toward the roof side. The inward fold 203 can prevent rainwater from flowing into the gap between the outer wall panel 100 and the second wall panel 202, thereby improving the waterproof performance of the waterproof joint.

[0033] In one embodiment, the end of the waterproof membrane 301 extends upward and is turned up between the first section of wall panel 201 and the outer wall panel 100.

[0034] In this embodiment, the upward-curving waterproof membrane 301 extends the waterproof path, preventing rainwater from entering the gap between the second section wall panel 202 and the cast-in-place roof 300, thus further improving the waterproof performance of the waterproof joint.

[0035] In one embodiment, a flashing 400 is also included, with its two ends connected to the first wall panel 201 and the cast-in-place roof 300, respectively, and the flashing 400 is arranged at an angle.

[0036] In this embodiment, the flashing 400 is designed to direct rainwater toward the roof, further reducing the possibility of rainwater flowing into the gaps between the outer wall panel 100 and the second wall panel 202, and between the second wall panel 202 and the cast-in-place roof 300, thereby further improving the waterproof performance of the waterproof joint.

[0037] In one embodiment, the flashing 400 includes a first vertical part 401, an inclined part 402, and a second vertical part 403 connected in sequence. The first vertical part 401 is connected to the first wall panel 201, and the second vertical part 403 is inserted into the cast-in-place roof 300. A horizontal part 404 that fits into the cast-in-place roof 300 is provided at the connection between the inclined part 402 and the second vertical part 403. Specifically, the horizontal part 404 is fixed to the cast-in-place roof 300 by bolts.

[0038] In this embodiment, rainwater falling from the integrated parapet wall 200 is guided to the roof via the inclined part 402, which reduces the possibility of rainwater flowing to the gap between the outer wall panel 100 and the second wall panel 202, and between the second wall panel 202 and the cast-in-place roof 300, thereby improving the waterproof performance of the waterproof joint.

[0039] In one embodiment, the first vertical portion 401 has an oblique insertion portion 405 at its end, which extends into the first section of wall panel 201.

[0040] In this embodiment, by extending the oblique insert 405 into the first section wall panel 201, the amount of rainwater entering the gap between the second section wall panel 202 and the outer wall panel 100 can be reduced, thereby improving the waterproof performance of the waterproof joint.

[0041] In one embodiment, a sealant 500 is provided at the interface between the inner fold 203 and the outer wall panel 100. This configuration in this embodiment further enhances the waterproofing effect between the inner fold 203 and the outer wall panel 100 through the application of the sealant 500.

[0042] In one embodiment, the second wall panel 202 is provided with a cantilever structure on the outside of the outer wall panel 100.

[0043] This utility model features a cantilever, which moves the waterproofing node from the top to the side. Firstly, it avoids the impact of rainwater directly washing over the weak point in the waterproofing. Secondly, the new location is more concealed, reducing the overall water volume at the weak point. Thirdly, the change in location changes the relative position of the weak point and the water. In the original node, the water was on top and the waterproofing measures were below. In this new node, the waterproofing measures are on top and the water is below. The water flows down naturally under gravity and will not put pressure on the waterproofing measures located above.

[0044] In one embodiment, the integrated parapet wall 200 is integrally cast in concrete. This embodiment, by replacing the folded metal plate with cast-in-place concrete, improves the material properties. Cast-in-place reinforced concrete inherently has higher waterproofing performance than folded metal plates.

[0045] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0046] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Waterproof joint at the top of the parapet wall of an integrated exterior wall panel, characterized in that... ,include: Exterior wall panel (100); An integrated parapet wall (200) includes a first wall panel (201) and a second wall panel (202). The first wall panel (201) is located inside the outer wall panel (100), and the second wall panel (202) is located on top of the outer wall panel (100) and is in a covering shape. A cast-in-place roof (300) is provided with a waterproof membrane (301), wherein the bottom of the first section wall panel (201) is connected to the cast-in-place roof (300).

2. The waterproof joint at the top of the parapet wall of the integrated exterior wall panel as described in claim 1, characterized in that: The top surface of the second wall panel (202) is inclined downward toward the inside of the outer wall panel (100), and the end of the second wall panel (202) located on the outside of the outer wall panel (100) has an inward fold (203), which is inclined downward toward the outside of the outer wall panel (100).

3. The waterproof joint at the top of the parapet wall of the integrated exterior wall panel as described in claim 1, characterized in that: The end of the waterproof membrane (301) extends upward and is placed between the first section of wall panel (201) and the outer wall panel (100).

4. The waterproof joint at the top of the parapet wall of the integrated exterior wall panel as described in claim 1, characterized in that: It also includes a flashing board (400), which is connected at both ends to the first section of wall panel (201) and the cast-in-place roof (300) respectively, and the flashing board (400) is set at an angle.

5. The waterproof joint at the top of the parapet wall of the integrated exterior wall panel as described in claim 4, characterized in that: The flashing (400) includes a first vertical part (401), an inclined part (402) and a second vertical part (403) connected in sequence. The first vertical part (401) is connected to the first wall panel (201), and the second vertical part (403) is inserted into the cast-in-place roof (300). The inclined part (402) and the second vertical part (403) are provided with a horizontal part (404) that fits into the cast-in-place roof (300).

6. The waterproof joint at the top of the parapet wall of the integrated exterior wall panel as described in claim 5, characterized in that: The first vertical part (401) has an oblique insertion part (405) at its end, which extends into the first wall panel (201).

7. The waterproof joint at the top of the parapet wall of the integrated exterior wall panel as described in claim 2, characterized in that: The inner fold (203) is fitted with sealant (500) at the joint with the outer wall panel (100).

8. The waterproof joint at the top of the parapet wall of the integrated exterior wall panel as described in claim 1, characterized in that: The second wall panel (202) has a cantilever structure on the outside of the outer wall panel (100).

9. The waterproof joint at the top of the parapet wall of the integrated exterior wall panel as described in claim 1, characterized in that: The integrated parapet wall (200) is cast in one piece of concrete.