An outer wall special-shaped deformation joint anti-leakage node structure

Abstract

The utility model discloses a kind of outer wall special-shaped deformation joint anti-seepage node structure, including first outer wall and second outer wall, deformation joint is formed between first outer wall and second outer wall, the front side surface of first outer wall and second outer wall is not coplanar, and the front side surface of first outer wall is relative to the front side surface of second outer wall in horizontal direction and forward dislocation, deformation joint is vertically provided with outer wall deformation joint plate, one end of outer wall deformation joint plate connects second outer wall front end side, the other end is folded towards front side and is connected with first outer wall inside, the front side and rear side of first outer wall and second outer wall are higher than roof and are provided with heightened outer wall, first outer wall and second outer wall top are higher than roof and are respectively provided with first back wall and second back wall between heightened outer wall, top cover plate is fixedly arranged above first back wall and second back wall, end side of top cover plate is embedded in the groove reserved in heightened outer wall. The utility model can realize waterproof sealing and safety protection integration of special-shaped deformation joint node position.

Description

Technical Field

[0001] This utility model belongs to the technical field of roofing sub-projects in building engineering, and specifically relates to a leak-proof joint structure for irregular deformation joints in exterior walls. Background Technology

[0002] In the construction of exterior walls for high-rise residential or public buildings, expansion joints are typically installed to address structural displacement caused by factors such as temperature changes, uneven foundation settlement, and seismic activity. These expansion joints must simultaneously meet requirements for leak prevention, aesthetics, and safety, making them a crucial element in the building facade protection system. However, in actual projects, when the exterior wall structure has irregularly shaped transitions such as T-shaped walls, L-shaped walls, or protruding walls, the spatial form of the expansion joint nodes becomes complex. Traditional standard drawings and conventional practices are mostly designed for planar walls and cannot fully accommodate the three-dimensional misaligned structures of irregularly shaped nodes. This results in complex expansion joint nodes for irregularly shaped exterior walls, significant leakage risks, and difficulties in ensuring construction quality.

[0003] Therefore, there is an urgent need to propose a structurally sound, easy-to-construct, and reliably sealed anti-leakage joint design for irregularly shaped expansion joints in exterior walls, so as to achieve integrated waterproofing, sealing, and safety protection at the joint. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a structure for an anti-leakage node of an irregularly shaped expansion joint in an exterior wall.

[0005] The technical solution adopted by this utility model is as follows: a leak-proof joint structure for an irregularly shaped expansion joint in an exterior wall, including a first exterior wall and a second exterior wall, with an expansion joint formed between the first and second exterior walls. The front surfaces of the first and second exterior walls are not coplanar, and the front surface of the first exterior wall is horizontally offset from the front surface of the second exterior wall. An exterior wall expansion joint plate is vertically arranged in the expansion joint. One end of the exterior wall expansion joint plate is connected to the front edge of the second exterior wall, and the other end is folded forward and connected to the inner side of the first exterior wall. The front and rear sides of the first and second exterior walls are provided with raised exterior walls above the roof. The top of the first and second exterior walls is provided with a first reverse wall and a second reverse wall above the roof between the raised exterior walls. A top cover plate is fixedly installed above the first and second reverse walls. The end of the top cover plate is embedded in a groove reserved in the raised exterior wall, and the end of the top cover plate closes the upper side of the exterior wall expansion joint plate. The top cover plate, the raised exterior wall, and the exterior wall expansion joint plate are sealed and connected by weather-resistant sealant.

[0006] Furthermore, the raised outer wall of the second outer wall has a groove on the side facing the first outer wall, and the front end of the top cover plate has a right-angle notch on the side near the second outer wall. The two sides of the right-angle notch are respectively embedded in the right-angle grooves formed on both sides of the raised outer wall of the second outer wall.

[0007] Furthermore, the top cover plate is embedded 20mm to 40mm into the raised exterior wall.

[0008] Furthermore, both the first and second reverse walls are concrete structures with a concrete strength of not less than C25 and a height of not less than 700mm.

[0009] Furthermore, the top cover is made of precast components, and the concrete strength of the precast components is not lower than C20.

[0010] Furthermore, the top cover is made of aluminum, and the thickness of the aluminum cover is not less than 1mm.

[0011] Compared with the prior art, the anti-leakage node structure of the irregular deformation joint of the exterior wall of this utility model has the following beneficial effects: 1. By setting up a multi-layer waterproof structure of "reverse wall + top cover plate + weather-resistant sealant", the top cover plate is embedded in the raised external wall groove and covers the upper part of the expansion joint, forming a continuous and closed waterproof layer, which effectively prevents rainwater from seeping in along the joint and achieves long-term seepage prevention at the joint.

[0012] 2. The top cover plate adopts an irregular shape design to adapt to various irregular wall misalignment conditions such as T-shaped walls and L-shaped walls. The embedding depth can be flexibly adjusted (20mm~40mm) to ensure a tight connection of the structure and improve the versatility and constructability of the expansion joint node.

[0013] 3. The construction is simple and can be prefabricated and installed. The top cover can be made of precast concrete or metal aluminum plate. It is of standard size, lightweight and easy to install, avoiding repeated grinding and sealing on site, reducing high-altitude wet operation procedures and improving construction efficiency and quality stability.

[0014] 4. High structural safety and durability: The first and second reverse walls are integrally cast with concrete, with a strength of not less than C25, effectively preventing wind and rain erosion and external damage, and extending the service life of the joint structure. The top cover plate is flush with the exterior wall facade, with simple seams. After being sealed with weather-resistant sealant, the exterior facade has strong integrity and meets the aesthetic requirements of high-rise residential exterior walls. Attached Figure Description

[0015] Figure 1 This is a front view of the present invention; Figure 2 This is a top view of the present invention; Figure 3 for Figure 2 Sectional view along the AA direction.

[0016] In the diagram: 1. First exterior wall; 2. Second exterior wall; 3. Expansion joint panel of exterior wall; 4. Heightened exterior wall; 5. First reverse wall; 6. Second reverse wall; 7. Top cover plate; 8. Roof. Detailed Implementation

[0017] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a leak-proof joint structure for irregularly shaped expansion joints in exterior walls.

[0018] like Figures 1-3 As shown, a leak-proof joint structure for an irregularly shaped expansion joint in an exterior wall includes a first exterior wall 1 and a second exterior wall 2. An expansion joint is formed between the first exterior wall 1 and the second exterior wall 2. The front surfaces of the first exterior wall 1 and the second exterior wall 2 are not coplanar, and the front surface of the first exterior wall 1 is horizontally offset forward relative to the front surface of the second exterior wall 2. An exterior wall expansion joint plate 3 is vertically arranged in the expansion joint. One end of the exterior wall expansion joint plate 3 is connected to the front edge of the second exterior wall 2, and the other end is folded forward and connected to the inner side of the first exterior wall 1. The front and rear sides of the first and second exterior walls 1 and 2 are provided with raised exterior walls 4 above the roof 8. The top of the first exterior wall 1 and the second exterior wall 2 are respectively provided with a first reverse wall 5 and a second reverse wall 6 above the roof 8 between the raised exterior walls 4. A top cover plate 7 is fixedly installed above the first reverse wall 5 and the second reverse wall 6. The end side of the top cover plate 7 is embedded in the groove reserved in the raised exterior wall 4, and the end side of the top cover plate 7 seals the upper side of the exterior wall expansion joint plate 3. The top cover plate 7, the raised exterior wall 4, and the exterior wall expansion joint plate 3 are sealed and connected with weather-resistant sealant to prevent leakage.

[0019] In this embodiment, both the first outer wall 1 and the second outer wall 2 are concrete outer walls with a concrete strength of not less than C30. The raised outer wall 4 protrudes from the concrete outer wall, and its concrete strength is also not less than C30. The first reverse wall 5 and the second reverse wall 6 are both concrete structures with a concrete strength of not less than C25 and a height of not less than 700mm, the specific details of which are determined according to the roofing construction methods.

[0020] The exterior wall expansion joint plate 3 is made of 1.2mm thick aluminum plate, 0.7mm thick galvanized thin steel plate, or stainless steel plate. The top cover plate 7 is made of precast components or metal aluminum cover plate. When using precast components, the concrete strength shall not be lower than C20. When using metal aluminum cover plate, the thickness shall not be lower than 1mm. The cross-sectional shape of the precast components or metal aluminum cover plate can refer to the shape of the flat roof expansion joint cover plate in the building expansion joint drawing collection.

[0021] The front end of the top cover plate 7 is irregularly shaped. The raised outer wall 4 of the second outer wall 2 has a groove on the side facing the first outer wall 1. The front end of the top cover plate 7 has a right-angle notch on the side near the second outer wall 2. The two sides of the right-angle notch are respectively embedded into the right-angle grooves formed on both sides of the raised outer wall 4 of the second outer wall 2. Specifically, the top cover plate 7 is embedded into the raised outer wall 4 by 20mm to 40mm. The top cover plate 7 and the raised outer wall 4 can also be reinforced by connecting rivets.

[0022] This utility model is applied to irregular construction conditions of expansion joint walls in high-rise buildings. It is safe, applicable, economical, reasonable, and easy to operate, and can improve the feasibility, continuity, and safety of expansion joint construction.

[0023] It should be noted that this specification and accompanying drawings only illustrate the technical features defined by the claims of this patent for the embodiment of "anti-leakage node construction of irregular expansion joint in exterior walls". Apart from this, all other structural layers of the expansion joint include, but are not limited to: 1. the material, density, and filling thickness of the filling material (polyethylene foam rods, rock wool, fireproof cotton, etc.); 2. the profile specifications, wall thickness, surface treatment, and anchoring spacing of the metal cover plate; 3. the insulation system, finishing layer, leveling layer, and substrate structure of the walls on both sides; 4. the cutting of the reinforcing bars on both sides of the expansion joint, the setting of connecting strips, and the construction procedures of the post-pouring strip; 5. the construction methods and acceptance standards for fire resistance, sound insulation, heat insulation, wind pressure resistance, etc.; all directly adopt mature technologies from current national, industry, and local standards, or conventional methods that can be implemented unambiguously by those skilled in the art based on common knowledge.

[0024] This patent does not make any substantial improvements to the aforementioned prior art, nor does it include it within the scope of the claims. Accordingly, the illustrations, textual descriptions, and dimensioning of the aforementioned conventional structures in this embodiment are merely illustrative of the complete node details and are not intended to limit the technical solution of this patent. Any implementation method formed by equivalent substitution, simplification, or omission of the aforementioned prior art based on the innovative features disclosed in this patent shall not be considered as departing from the scope of protection of this patent.

Claims

1. A leak-proof joint structure for irregularly shaped expansion joints in exterior walls, characterized in that, The structure includes a first outer wall (1) and a second outer wall (2), with an expansion joint between them. The front surfaces of the first outer wall (1) and the second outer wall (2) are not coplanar, and the front surface of the first outer wall (1) is horizontally offset from the front surface of the second outer wall (2). An expansion joint plate (3) is vertically installed in the expansion joint. One end of the expansion joint plate (3) is connected to the front edge of the second outer wall (2), and the other end is folded forward and connected to the inner side of the first outer wall (1). The front and rear sides of the first outer wall (1) and the second outer wall (2) are connected. The side is higher than the roof (8) and is equipped with an extended exterior wall (4). The top of the first exterior wall (1) and the second exterior wall (2) are respectively provided with a first reverse wall (5) and a second reverse wall (6) between the extended exterior wall (4) and the roof (8). A top cover plate (7) is fixedly installed above the first reverse wall (5) and the second reverse wall (6). The end side of the top cover plate (7) is embedded in the groove reserved in the extended exterior wall (4), and the end side of the top cover plate (7) seals the upper side of the exterior wall expansion joint plate (3). The top cover plate (7) is sealed to the extended exterior wall (4) and the exterior wall expansion joint plate (3) by weather-resistant sealant.

2. The anti-leakage joint structure for irregularly shaped expansion joints in exterior walls according to claim 1, characterized in that, The raised outer wall (4) of the second outer wall (2) has a groove on the side facing the first outer wall (1), and the front end of the top cover plate (7) has a right angle notch on the side close to the second outer wall (2). The two sides of the right angle notch are respectively embedded in the right angle grooves formed on both sides of the raised outer wall (4) of the second outer wall (2).

3. The anti-leakage joint structure for irregularly shaped expansion joints in exterior walls according to claim 1 or 2, characterized in that, The top cover plate (7) is embedded in the raised exterior wall (4) by 20mm to 40mm.

4. The anti-leakage joint structure for irregularly shaped expansion joints in exterior walls according to claim 1, characterized in that, Both the first reverse wall (5) and the second reverse wall (6) are concrete structures with a concrete strength of not less than C25 and a height of not less than 700mm.

5. The anti-leakage joint structure for irregularly shaped expansion joints in exterior walls according to claim 1, characterized in that, The top cover plate (7) is made of precast components, and the concrete strength of the precast components is not lower than C20.

6. The anti-leakage joint structure for irregularly shaped expansion joints in exterior walls according to claim 1, characterized in that, The top cover (7) is made of aluminum metal and the thickness of the aluminum metal cover is not less than 1mm.

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