Anti-seepage joint of profiled steel sheet and concrete outer wall high-low span position expansion joint
By combining the non-rigid connection of the fixed steel plate and the adjustable steel plate with the anti-seepage steel plate, the problems of leakage and insufficient structural stability at the expansion joints of the profiled steel sheet and the concrete exterior wall at different heights are solved, achieving waterproof effect and structural stability during temperature changes and settlement processes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR SECOND ENG BUREAU LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-05-29
AI Technical Summary
In existing technologies, there are leakage problems at the expansion joints where profiled steel sheets and concrete exterior walls are at different heights, and the structure is not stable enough, especially prone to cracking when temperature changes and building settlement occur.
A non-rigid connection structure of fixed steel plates and adjustable steel plates is adopted, combined with rectangular reinforcing steel plates and seepage-proof steel plates, and a stable seepage-proof node is formed by bolts and screws. This absorbs the settlement and temperature deformation stress of the building, enhances the vertical bearing capacity, and blocks the rainwater seepage path.
It effectively solved the leakage problem at the joints, enhanced the stability of the structure, ensured that it would not crack during temperature changes and settlement, and physically blocked the infiltration path of rainwater.
Smart Images

Figure CN224300189U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, and in particular to a waterproof joint for expansion joints at different heights of profiled steel sheets and concrete exterior walls. Background Technology
[0002] In building structures, profiled steel sheet exterior walls are widely used due to their lightweight, high strength, and good sealing properties. However, there are significant defects in the expansion joint waterproofing nodes at the high-low span locations of the steel sheet exterior walls and the concrete roof: First, the existing technology uses a single steel sheet to directly and rigidly fix the profiled steel sheet exterior wall to the concrete exterior wall, without reserving the deformation allowance for building settlement and thermal expansion and contraction, resulting in cracking and leakage at the joint due to stress deformation; Second, when the height difference between the roof panel and the concrete surface is too large, the traditional nodes lack vertical reinforcement measures, resulting in insufficient overall structural stability; In addition, the existing high-low span waterproofing nodes have insufficient treatment at the junction with the wall panels and roof panels, making it easy for rainwater to infiltrate from the side of the concrete parapet wall. Utility Model Content
[0003] The purpose of this utility model is to provide a seepage prevention node for expansion joints at different heights of profiled steel sheets and concrete exterior walls, in order to solve the above-mentioned problems in the prior art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a waterproof joint for expansion joints at different heights between profiled steel sheets and concrete exterior walls, comprising a profiled steel sheet exterior wall, which is located at the top; a fixed steel plate, which is fixedly connected to the profiled steel sheet exterior wall, the fixed steel plate comprising a first upper U-shaped part, a first lower U-shaped part and a first vertical part, the bottom of the fixed steel plate being snapped into an adjusting steel plate; and a reinforcing steel plate, which is rectangular, with a connecting steel plate between the reinforcing steel plate and the adjusting steel plate, the bottom of the reinforcing steel plate being fixedly connected to the concrete parapet wall.
[0005] In a preferred embodiment, the adjusting steel plate includes a second upper U-shaped portion, a second vertical portion, a diagonal bar portion, and a second lower U-shaped portion. The second vertical portion is disposed below one of the I-shaped portions of the second upper U-shaped portion. The lower end of the second vertical portion is fixedly connected to one end of the diagonal bar portion. The end of the diagonal bar portion away from the second vertical portion is fixedly connected to the second lower U-shaped portion. The second upper U-shaped portion is snapped into connection with the first lower U-shaped portion.
[0006] In a preferred embodiment, the connecting steel plate includes an upper horizontal part, a third vertical part, and a lower horizontal part. The upper horizontal part of the connecting steel plate is fixedly connected to the diagonal part of the adjusting steel plate by bolts, and the lower horizontal part of the connecting steel plate is fixedly connected to the reinforcing steel plate by screws.
[0007] In a preferred embodiment, a waterproof steel plate is connected to the connecting steel plate and the concrete parapet wall. The waterproof steel plate includes a second horizontal part, a second diagonal part, and a fourth vertical part. One end of the second horizontal part is fixedly connected to the third vertical part of the connecting steel plate, and the other end of the second horizontal part is provided with a second diagonal part. The fourth vertical part is provided below the end of the second diagonal part away from the second horizontal part, and the end of the fourth vertical part away from the second diagonal part is fixedly connected to the outside of the concrete parapet wall by screws.
[0008] In a preferred embodiment, the fixed steel plate is fixedly connected to the profiled steel sheet exterior wall by bolts.
[0009] In a preferred embodiment, the reinforcing steel plate is fixedly connected to the concrete parapet wall from below by screws.
[0010] In a preferred embodiment, the first upper U-shaped portion, the first lower U-shaped portion, and the second upper U-shaped portion are all the same in size, specifications, and material, and the length of the second lower U-shaped portion is less than the length of the second upper U-shaped portion.
[0011] Compared with the prior art, this utility model has the following features and beneficial effects:
[0012] 1. This utility model forms a non-rigid connection structure by snapping together the first lower U-shaped part of the fixed steel plate with the second upper U-shaped part of the adjustable steel plate, which effectively absorbs the stress of building settlement and temperature deformation, and solves the problem of joint cracking and leakage caused by traditional rigid fixing.
[0013] 2. This utility model significantly enhances the vertical bearing capacity at high and low span positions by adding a rectangular reinforcing steel plate and using bolts to fix the upper horizontal part of the connecting steel plate to the diagonal part of the adjusting steel plate, and screws to fix the lower horizontal part of the connecting steel plate to the reinforcing steel plate, thus ensuring the stability of the overall structure when the height difference is too large.
[0014] 3. This utility model forms an extended covering structure through the second horizontal part, the second diagonal part and the fourth vertical part of the seepage-proof steel plate: one end of the second horizontal part is fixed to the third vertical part of the connecting steel plate, and the fourth vertical part is fixed to the outside of the concrete parapet wall by screws, thus physically blocking the rainwater seepage path. Attached Figure Description
[0015] The present invention will now be described in further detail with reference to the accompanying drawings.
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 These are detailed drawings of the components of this utility model;
[0018] Reference numerals: In the figure: 1 - Corrugated steel sheet exterior wall, 2 - Fixed steel plate, 3 - First upper U-shaped section, 4 - First vertical section, 5 - First lower U-shaped section, 6 - Adjusting steel plate, 7 - Second upper U-shaped section, 8 - Second vertical section, 9 - Diagonal bar section, 10 - Second lower U-shaped section, 11 - Reinforcing steel plate, 12 - Connecting steel plate, 13 - Upper horizontal section, 14 - Third vertical section, 15 - Lower horizontal section, 16 - Waterproof steel plate, 17 - Second horizontal section, 18 - Second diagonal bar section, 19 - Fourth vertical section, 20 - Concrete parapet wall. Detailed Implementation
[0019] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0020] Example 1:
[0021] See the examples. Figures 1 to 2 As shown, the waterproof joint of the expansion joint between the profiled steel sheet and the concrete exterior wall at different heights of the present invention includes a profiled steel sheet exterior wall 1, which is located at the top.
[0022] The fixed steel plate 2 is fixedly connected to the profiled steel sheet exterior wall 1 by bolts. The fixed steel plate 2 includes a first upper U-shaped part 3, a first lower U-shaped part 5 and a first vertical part 4. The lower part of the fixed steel plate 2 is snapped into the adjusting steel plate 6. The adjusting steel plate 6 includes a second upper U-shaped part 7, a second vertical part 8, a diagonal bar part 9 and a second lower U-shaped part 10. The second vertical part 8 is located below one of the I-shaped parts of the second upper U-shaped part 7. The lower end of the second vertical part 8 is fixedly connected to one end of the diagonal bar part 9. The end of the diagonal bar part 9 away from the second vertical part 8 is fixedly connected to the second lower U-shaped part 10. The second upper U-shaped part 7 is snapped into the first lower U-shaped part 5. The first upper U-shaped part 3, the first lower U-shaped part 5 and the second upper U-shaped part 7 are the same in size, specifications and material. The length of the second lower U-shaped part 10 is less than the length of the second upper U-shaped part 7.
[0023] The reinforcing steel plate 11 is rectangular. The bottom of the reinforcing steel plate 11 is fixedly connected to the top of the concrete parapet wall 20 by screws. A connecting steel plate 12 is provided between the top of the reinforcing steel plate 11 and the adjusting steel plate 6. The connecting steel plate 12 includes an upper horizontal part 13, a third vertical part 14 and a lower horizontal part 15. The upper horizontal part 13 of the connecting steel plate 12 is fixedly connected to the diagonal part 9 of the adjusting steel plate 6 by bolts. The lower horizontal part 15 of the connecting steel plate 12 is fixedly connected to the reinforcing steel plate 11 by screws.
[0024] A waterproof steel plate 16 is connected to the connecting steel plate 12 and the concrete parapet wall 20. The waterproof steel plate 16 includes a second horizontal part 17, a second diagonal part 18 and a fourth vertical part 19. One end of the second horizontal part 17 is fixedly connected to the third vertical part 14 of the connecting steel plate 12. The other end of the second horizontal part 17 is provided with the second diagonal part 18. The fourth vertical part 19 is provided below the end of the second diagonal part 18 away from the second horizontal part 17. The end of the fourth vertical part 19 away from the second diagonal part 18 is fixedly connected to the outside of the concrete parapet wall 20 by screws.
[0025] Example 2:
[0026] Construction steps of this utility model:
[0027] Step 1: Fix the fixing steel plate 2 vertically to the bottom of the profiled steel sheet outer wall 1 with bolts, ensuring that its first upper U-shaped part 3 is locked to the outer wall and the first lower U-shaped part 5 faces downward;
[0028] Step 2: Connect the second upper U-shaped part 7 of the adjusting steel plate 6 to the first lower U-shaped part 5 of the fixed steel plate 2, so that the second vertical part 8, the diagonal part 9 and the second lower U-shaped part 10 of the adjusting steel plate 6 hang down naturally.
[0029] Step 3: Fix the upper horizontal part 13 of the connecting steel plate 12 to the diagonal part 9 of the adjusting steel plate 6 with bolts, and then connect the lower horizontal part 15 of the connecting steel plate 12 to the rectangular reinforcing steel plate 11 with screws.
[0030] Step 4: Anchor the reinforcing steel plate 11 to the top of the concrete parapet wall 20 with screws. At the same time, fix one end of the second horizontal part 17 of the waterproof steel plate 16 to the third vertical part 14 of the connecting steel plate 12, and extend the other end through the second diagonal part 18. Then, use screws to vertically fix the fourth vertical part 19 to the outside of the concrete parapet wall 20.
[0031] Step 5: Keep the first lower U-shaped part 5 of the fixed steel plate 2 and the second upper U-shaped part 7 of the adjusting steel plate 6 in a non-locking snap-fit state, leaving a gap for thermal expansion and contraction deformation.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A waterproof joint for expansion joints at varying heights between profiled steel sheets and concrete exterior walls, characterized in that: include: A profiled steel sheet exterior wall (1) is provided at the top. Fixed steel plate (2), the fixed steel plate (2) is fixedly connected to the profiled steel sheet outer wall (1), the fixed steel plate (2) includes a first upper U-shaped part (3), a first lower U-shaped part (5) and a first vertical part (4), and the lower part of the fixed steel plate (2) is engaged with the adjusting steel plate (6); A reinforcing steel plate (11) is rectangular. A connecting steel plate (12) is provided between the reinforcing steel plate (11) and the adjusting steel plate (6). The bottom of the reinforcing steel plate (11) is fixedly connected to the concrete parapet wall (20).
2. The anti-seepage joint between profiled steel sheet and concrete exterior wall at different heights according to claim 1, characterized in that: The adjusting steel plate (6) includes a second upper U-shaped part (7), a second vertical part (8), a diagonal part (9), and a second lower U-shaped part (10). The second vertical part (8) is located below one of the I-shaped parts of the second upper U-shaped part (7). The lower end of the second vertical part (8) is fixedly connected to one end of the diagonal part (9). The end of the diagonal part (9) away from the second vertical part (8) is fixedly connected to the second lower U-shaped part (10). The second upper U-shaped part (7) is snapped into the first lower U-shaped part (5).
3. The anti-seepage joint between profiled steel sheet and concrete exterior wall at different heights according to claim 2, characterized in that: The connecting steel plate (12) includes an upper horizontal part (13), a third vertical part (14) and a lower horizontal part (15). The upper horizontal part (13) of the connecting steel plate (12) is fixedly connected to the diagonal part (9) of the adjusting steel plate (6) by bolts, and the lower horizontal part (15) of the connecting steel plate (12) is fixedly connected to the reinforcing steel plate (11) by screws.
4. The anti-seepage joint between profiled steel sheet and concrete exterior wall at different heights according to claim 3, characterized in that: A waterproof steel plate (16) is connected to the connecting steel plate (12) and the concrete parapet wall (20). The waterproof steel plate (16) includes a second horizontal part (17), a second diagonal part (18) and a fourth vertical part (19). One end of the second horizontal part (17) is fixedly connected to the third vertical part (14) of the connecting steel plate (12). The other end of the second horizontal part (17) is provided with a second diagonal part (18). The fourth vertical part (19) is provided below the end of the second diagonal part (18) away from the second horizontal part (17). The end of the fourth vertical part (19) away from the second diagonal part (18) is fixedly connected to the outside of the concrete parapet wall (20) by screws.
5. The anti-seepage joint between profiled steel sheet and concrete exterior wall at different heights according to claim 4, characterized in that: The fixed steel plate (2) is fixedly connected to the profiled steel sheet outer wall (1) by bolts.
6. The anti-seepage joint between profiled steel sheet and concrete exterior wall at different heights according to claim 5, characterized in that: The reinforcing steel plate (11) is fixedly connected to the concrete parapet wall (20) from below by screws.
7. The anti-seepage joint between profiled steel sheet and concrete exterior wall at different heights according to claim 6, characterized in that: The first upper U-shaped part (3), the first lower U-shaped part (5) and the second upper U-shaped part (7) are the same in size, specifications and material, and the length of the second lower U-shaped part (10) is less than the length of the second upper U-shaped part (7).