Exterior wall construction joint waterstop structure
By installing a water-stop steel plate at the construction joint of the exterior wall to cut off the gap and equipping it with drainage components, combined with a sealing plate and drainage pipe, the problem of water seepage bypassing the water-stop steel plate and entering the interior wall was solved, achieving a better waterproof effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU LANDUN CONSTR TECH CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-09
AI Technical Summary
Existing waterproofing structures are prone to bypassing the waterproofing steel plate and entering the interior wall when there is excessive water seepage, resulting in poor waterproofing performance.
Water-stop steel plates are used to cut off the joints in the wall, and bent sections are formed at both ends. Drainage components and through holes are installed to collect seepage water and discharge it through the drain pipe; expansion bolts are installed on the outside to fix the sealing plate to enhance the waterproof effect.
It effectively prevents water from flowing from the exterior wall to the interior wall, reduces the possibility of water seeping into the interior wall, improves the waterproofing effect, and reduces the impact of water seepage on the wall structure.
Smart Images

Figure CN224338431U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of exterior wall construction technology, specifically to a waterproofing structure for exterior wall construction joints. Background Technology
[0002] Currently, building construction refers to projects with roofs, beams, columns, walls, foundations, and internal spaces that meet people's needs for production, living, learning, and public activities. Building construction projects are generally referred to as construction projects, which refer to the various technical work and completed engineering entities involved in the surveying, planning, design, construction, installation, and maintenance of newly built, renovated, or expanded buildings and ancillary structures. Construction joints are generally generated when pouring concrete for the exterior walls of buildings. Reinforced concrete retaining walls are one of the construction joint treatment methods and need to be improved. The main reason for the formation of construction joints is that the concrete is poured in sections according to design requirements or construction needs, forming a joint between the concrete poured earlier and later. In order to prevent water seepage or even leakage at the construction joint, a water-stop steel plate is usually embedded at the joint between the two sections of the wall for water-stopping treatment. However, when there is too much seepage, it will bypass the water-stop steel plate and enter the interior wall. Therefore, those skilled in the art have proposed a water-stopping structure for exterior wall construction joints to solve the above-mentioned problems. Utility Model Content
[0003] The purpose of this utility model is to provide a water-stopping structure for construction joints in exterior walls, which solves the problem in the prior art where excessive water seepage in existing water-stopping structures bypasses the water-stopping steel plate and enters the interior wall.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0005] A waterproofing structure for construction joints in exterior walls, comprising:
[0006] A first wall and a second wall, the second wall being disposed above the first wall, the first wall and the second wall being connected to form a wall structure;
[0007] The first water-stopping structure is located inside the wall structure;
[0008] The second water-stop structure is provided on the surface of the wall structure;
[0009] The first water-stopping structure includes a water-stopping steel plate embedded in the wall structure, wherein the middle part of the water-stopping steel plate cuts off the connection gap between the first wall and the second wall.
[0010] Preferably, the two ends of the water-stop steel plate are bent towards the outer wall to form a bent section, and a drainage component is provided on the inner side of the bent section.
[0011] Preferably, the drainage assembly includes two mounting strips fixedly connected to the inner side of the bend section, and a connecting half-ring is fixedly connected to the opposite side of the two mounting strips, forming a drainage zone between the inner side of the connecting half-ring and the inner side of the bend section.
[0012] Preferably, the surface of the mounting strip has uniformly distributed through holes that communicate with the drainage area.
[0013] Preferably, both ends of the connecting semi-ring are fixedly connected to baffles for blocking the drainage area, and the other end of the baffle is provided with a drainage pipe connected to the drainage area.
[0014] Preferably, the second water-stopping structure includes two mounting plates respectively disposed on the surfaces of the first wall and the second wall. The surfaces of the mounting plates are provided with evenly distributed expansion bolts, and the other end of the expansion bolts penetrates the mounting plate and is fixedly connected to the inner wall of the wall structure.
[0015] Preferably, a sealing plate is fixedly connected between the two mounting plates, and the sealing plate is a rubber material component.
[0016] Compared with the prior art, the beneficial effects achieved by this utility model are:
[0017] 1. By setting up a first water-stop structure, the seepage water that penetrates into the wall can be blocked by the water-stop steel plate, preventing the seepage water from flowing from the outer wall to the inner wall. The bends formed by the two ends of the water-stop steel plate bending towards the outer wall can collect the seepage water in the bends, reducing the possibility of the seepage water increasing and bypassing the water-stop steel plate to seep into the inner wall. At the same time, the through holes on the installation strip can allow the seepage water to pass through the through holes into the interior of the drainage area, and finally be discharged into the interior of the wall structure through the drainage pipe, reducing the impact of seepage water on the wall structure.
[0018] 2. By setting a second water-stop structure, waterproofing can be achieved from the joint between the first and second walls of the exterior wall under the action of the second water-stop structure. This active waterproofing method reduces the impact of water seepage into the interior of the wall structure and reduces the water-stopping burden on the first water-stop structure. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a partial cross-sectional schematic diagram of the present invention;
[0021] Figure 3 This is a schematic diagram of the first water-stopping structure of this utility model;
[0022] Figure 4 This is a schematic diagram of the second water-stopping structure of this utility model.
[0023] Wherein: 1. First wall; 101. Second wall; 2. First water-stop structure; 201. Baffle; 202. Drainage pipe; 203. Water-stop steel plate; 204. Through hole; 205. Connecting half ring; 206. Mounting strip; 3. Second water-stop structure; 301. Mounting plate; 302. Sealing plate; 303. Expansion bolt. Detailed Implementation
[0024] 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 some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-4 A waterproofing structure for construction joints in exterior walls, comprising:
[0026] A first wall 1 and a second wall 101, the second wall 101 being disposed above the first wall 1, the first wall 1 and the second wall 101 being connected to form a wall structure;
[0027] The first water-stopping structure 2 is installed inside the wall structure;
[0028] The second water-stopping structure 3 is installed on the surface of the wall structure.
[0029] The first water-stopping structure 2 includes a water-stopping steel plate 203 embedded in the wall structure, and the middle part of the water-stopping steel plate 203 cuts off the connection gap between the first wall 1 and the second wall 101.
[0030] The second wall 101 is formed after the first wall 1. Therefore, in order to prevent water seepage at the joint between the two, the water-stop steel plate 203 cuts off the joint between the first wall 1 and the second wall 101, so that the seepage can be blocked by the water-stop steel plate 203 and will not flow from the outer wall to the inner wall.
[0031] Please see Figure 1-4 The two ends of the water-stop steel plate 203 are bent towards the outer wall to form a bent section, and a drainage component is installed on the inner side of the bent section.
[0032] The drainage assembly includes two mounting strips 206 fixedly connected to the inside of the bend section. A connecting half-ring 205 is fixedly connected to the opposite side of the two mounting strips 206, and a drainage zone is formed between the inside of the connecting half-ring 205 and the inside of the bend section.
[0033] The surface of the mounting strip 206 has evenly distributed through holes 204 that are connected to the drainage area.
[0034] Both ends of the connecting half-ring 205 are fixedly connected with baffles 201 for blocking the drainage area, and the other end of the baffles 201 is provided with a drain pipe 202 that is connected to the drainage area.
[0035] The bends formed by bending the two ends of the waterstop steel plate 203 towards the outer wall can collect the seepage water in the bends, reducing the possibility of the seepage water increasing and bypassing the waterstop steel plate 203 to seep into the inner wall. At the same time, the through holes 204 on the mounting strip 206 can allow the seepage water to pass through the through holes 204 into the interior of the drainage area, and finally discharge it into the interior of the wall structure through the drainage pipe 202, reducing the impact of seepage water on the wall structure.
[0036] The connection half-ring 205 can guide the seepage water with its outer side, so that the seepage water can enter the interior of the drainage area through the through hole 204 better through the guide on the outer side of the connection half-ring 205.
[0037] Please see Figure 1-4 The second water-stopping structure 3 includes two mounting plates 301 respectively disposed on the surfaces of the first wall 1 and the second wall 101. The surfaces of the mounting plates 301 are provided with evenly distributed expansion bolts 303. The other end of the expansion bolts 303 passes through the mounting plates 301 and is fixedly connected to the inner wall of the wall structure.
[0038] A sealing plate 302 is fixedly connected between the two mounting plates 301, and the sealing plate 302 is a rubber material component.
[0039] Expansion bolts 303 are used to pass through the mounting plate 301 and insert it into the interior of the wall structure to fix the position of the mounting plate 301. At the same time, the sealing plate 302 between the two mounting plates 301 can cover the joint between the first wall 1 and the second wall 101 from the outside of the exterior wall, reducing the possibility of rainwater entering the interior of the wall structure through the gap between the two, thus improving the waterproof effect. In addition, the sealing plate 302 is a rubber component with a certain deformation capacity, so that the deformation of the first wall 1 and the second wall 101 caused by temperature can be adaptively covered by the sealing plate 302 to further improve the waterproof effect of the exterior wall.
[0040] Working principle: The second water-stop structure 3 provides external waterproofing to the joint between the first wall 1 and the second wall 101, reducing the possibility of rainwater seeping into the interior wall through the joint. Simultaneously, the sealing plate 302, being a rubber component, possesses a certain degree of deformation capability, preventing deformation of the first wall 1 and the second wall 101 due to temperature changes from affecting the waterproofing effect. This ensures effective waterproofing at the joint between the first wall 1 and the second wall 101. Furthermore, under the action of the first water-stop structure 2, any water seeping into the wall can be blocked by the water-stop steel plate 203, which cuts off the joint between the first wall 1 and the second wall 101. The seepage is prevented from flowing from the outer wall to the inner wall by the water-stop steel plate 203. The bends formed by the two ends of the water-stop steel plate 203 bending towards the outer wall can collect the seepage in the bends, reducing the possibility of the seepage increasing and bypassing the water-stop steel plate 203 to seep into the inner wall. At the same time, the through holes 204 on the mounting strip 206 allow the seepage to pass through the through holes 204 into the interior of the drainage area, and finally be discharged into the interior of the wall structure through the drainage pipe 202, reducing the impact of seepage on the wall structure. The setting of the connecting half ring 205 can guide the seepage with its outer side, so that the seepage can better enter the interior of the drainage area through the through holes 204 through the guide on the outer side of the connecting half ring 205.
[0041] 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, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A waterproofing structure for construction joints in exterior walls, characterized in that, include: A first wall (1) and a second wall (101), the second wall (101) being disposed above the first wall (1), the first wall (1) and the second wall (101) being connected to form a wall structure; The first water-stopping structure (2) is located inside the wall structure; The second water-stop structure (3) is provided on the surface of the wall structure; The first water-stop structure (2) includes a water-stop steel plate (203) embedded in the wall structure, and the water-stop steel plate (203) cuts off the connection gap between the first wall (1) and the second wall (101) at the middle. The second water-stopping structure (3) includes two mounting plates (301) respectively set on the surface of the first wall (1) and the second wall (101). The surface of the mounting plate (301) is provided with evenly distributed expansion bolts (303). The other end of the expansion bolts (303) passes through the mounting plate (301) and is fixedly connected to the inner wall of the wall structure. A sealing plate (302) is fixedly connected between the two mounting plates (301), and the sealing plate (302) is a rubber material component.
2. The water-stopping structure for construction joints in exterior walls according to claim 1, characterized in that: The two ends of the water-stop steel plate (203) are bent towards the outer wall to form a bent section, and a drainage component is provided on the inner side of the bent section.
3. The water-stopping structure for construction joints in exterior walls according to claim 2, characterized in that: The drainage assembly includes two mounting strips (206) fixedly connected to the inside of the bend section. A connecting half-ring (205) is fixedly connected to the opposite side of the two mounting strips (206). A drainage zone is formed between the inside of the connecting half-ring (205) and the inside of the bend section.
4. The water-stopping structure for construction joints in exterior walls according to claim 3, characterized in that: The surface of the mounting strip (206) is provided with uniformly distributed through holes (204) that are connected to the drainage area.
5. The water-stopping structure for construction joints in exterior walls according to claim 4, characterized in that: Both ends of the connecting half-ring (205) are fixedly connected to baffles (201) for blocking the drainage area, and the other end of the baffle (201) is provided with a drain pipe (202) connected to the drainage area.