Leakage prevention and treatment structure of inclined plane of metal curtain wall and construction method thereof

Abstract

The invention discloses a leakage prevention structure of a metal curtain wall slope and a construction method of the leakage prevention structure of the metal curtain wall slope, and the leakage prevention structure of the metal curtain wall slope is arranged at a joint part of the metal curtain wall slope and a building main body. Comprising a first waterproof layer, a leveling layer, a second waterproof layer and a waterproof protection layer which are sequentially arranged on a metal curtain wall base layer from the direction close to the metal curtain wall base layer to the direction away from the metal curtain wall base layer. According to the metal curtain wall waterproof structure, on the basis that an original TPO coiled material is reserved to serve as the first waterproof layer, a newly-added structure is complementary with the original TPO coiled material to form a three-level cooperative waterproof mechanism, the waterproof performance of the metal curtain wall is improved, and the waterproof performance of the metal curtain wall is improved. And through the gradient design of the leveling layer, directional guide and drainage of leakage water are ensured, efficient leakage prevention and control of the inclined plane connector part of the metal curtain wall are achieved, and the method has high popularization value.

Description

Technical Field

[0001] The invention relates to the technical field of curtain wall engineering construction, in particular to a leakage prevention structure for a metal curtain wall slope and a construction method thereof. Background Art

[0002] Metal curtain walls are widely used in building exterior projects due to their lightweight, durable, and decorative qualities. However, leakage at the interfaces between sloped metal curtain walls and floors, roofs, and other surfaces has long plagued the industry. Especially in extreme weather conditions, leaking water can easily penetrate through these joints into buildings, causing structural corrosion and damaging the indoor environment.

[0003] In the prior art, the conventional method is to use TPO waterproof membrane to directly cover the interface between the base of the metal curtain wall 1 and the building body 2, such as Figure 1 As shown in the figure, in an existing project, a 1.5mm TPO waterproof membrane is used to overlap the building main body waterproof layer 21 at the inclined interface of the metal curtain wall to form a first waterproof layer 3. However, the above method has the following defects:

[0004] (1) The intersection of the slope and the ground is prone to hollowing and cracking due to stress concentration;

[0005] (2) There is a lack of transition structure between the metal curtain wall and the waterproof layer, and temperature deformation causes interface peeling;

[0006] (3) A single waterproof layer has low reliability and cannot cope with long-term leakage risks. Summary of the Invention

[0007] In order to overcome the defects in the prior art, the present invention provides a leakage prevention structure for the inclined surface of a metal curtain wall and a construction method thereof, so as to achieve efficient leakage prevention at the interface of the inclined surface of the metal curtain wall.

[0008] In order to achieve the above-mentioned object, the present invention provides a leakage prevention structure for the inclined surface of a metal curtain wall, which is provided at the interface between the inclined surface of the metal curtain wall and the main body of the building, and the leakage prevention structure comprises:

[0009] A first waterproof layer, a leveling layer, a second waterproof layer and a waterproof protective layer are sequentially arranged on the metal curtain wall base layer from the direction adjacent to the metal curtain wall base layer to the direction away from the metal curtain wall base layer, wherein the first waterproof layer is overlapped and connected with the waterproof layer of the building body, and the side of the leveling layer facing the second waterproof layer is formed with an outward drainage slope for guiding the leakage water at the interface to the outside of the metal curtain wall, and the second waterproof layer is provided with two layers.

[0010] Preferably, the first waterproof layer is made of TPO waterproof membrane, and the second waterproof layer is made of polyurethane waterproof coating.

[0011] Preferably, the leveling layer, the second waterproof layer and the waterproof protective layer all extend to one side of the building body.

[0012] Preferably, when the leveling layer is provided, a circular arc transition is formed at the inner corner and the outer corner, and the arc radius is ≥50 mm.

[0013] Preferably, the leveling layer and the waterproof protective layer both use polymer-modified waterproof mortar, and the strength grade of the waterproof mortar used in the waterproof protective layer is ≥M20.

[0014] A construction method for a metal curtain wall slope leakage prevention structure is provided, and is used for constructing the metal curtain wall slope leakage prevention structure. The construction method comprises the following steps:

[0015] Excavate and clean the leakage location at the interface between the metal curtain wall slope and the building main body, and remove the ineffective sealing material to the metal curtain wall base to maintain the integrity of the metal curtain wall;

[0016] Construct the first waterproof layer on the cleaned metal curtain wall base layer, and make the first waterproof layer overlap and connect with the waterproof layer of the building body;

[0017] A leveling layer and two second waterproof layers are sequentially constructed on the first waterproof layer from the direction adjacent to the metal curtain wall base layer to the direction away from the metal curtain wall base layer. When constructing the leveling layer, the side of the leveling layer facing the second waterproof layer forms an outward drainage slope for guiding leakage water at the interface to the outside of the metal curtain wall.

[0018] A protective layer is constructed on the two completed second waterproof layers to complete the prevention and control of the leakage location.

[0019] Preferably, when constructing a leveling layer and two second waterproof layers on the first waterproof layer in the direction adjacent to the metal curtain wall base layer to the direction away from the metal curtain wall base layer, the second waterproof layer is constructed after the first second waterproof layer is completely dry, and the coating directions of the two second waterproof layers are perpendicular to each other.

[0020] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0021] 1) Structural innovation: By adopting a "flexible coating + rigid protection" composite system, the slope of the leveling layer optimizes the drainage path, the coating layer achieves elastic sealing, and the protective layer resists mechanical damage, forming a three-level coordinated waterproofing mechanism.

[0022] 2) Interface collaborative design: The original TPO membrane is retained as the primary waterproof layer, and the new structure complements it. The slope design ensures that the leaking water is directional and drained.

[0023] 3) Non-destructive construction technology: Trenchless local repair technology is used to avoid damage to the metal curtain wall structure, while shortening the construction period and reducing construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a structural node diagram of the prior art using TPO waterproof membrane to directly cover the interface.

[0026] Figure 2 This is a node diagram of the leakage prevention structure of the inclined surface of the metal curtain wall in an embodiment of the present invention.

[0027] The corresponding relationship of the reference numbers in the accompanying drawings is as follows:

[0028] 1-metal curtain wall; 2-building main body; 21-building main body waterproof layer; 3-first waterproof layer; 4-leveling layer; 5-second waterproof layer; 6-waterproof protection layer. DETAILED DESCRIPTION

[0029] The following is a further description of specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is intended to facilitate understanding of the present invention and does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0030] See also Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a leakage prevention structure for the inclined surface of a metal curtain wall, which is arranged at the interface between the inclined surface of the metal curtain wall 1 and the main building 2. The leakage prevention structure includes a first waterproof layer 3, a leveling layer 4, a second waterproof layer 5 and a waterproof protective layer 6 arranged on the base layer of the metal curtain wall from bottom to top, wherein the first waterproof layer 3 is overlapped with the waterproof layer 21 of the main building, and the side of the leveling layer 4 facing the second waterproof layer 5 is formed with an outward drainage slope for guiding the leakage water at the interface to the outside of the metal curtain wall 1, with a slope of ≥2%, and the second waterproof layer 5 is provided with two layers.

[0031] Furthermore, in this embodiment, the first waterproof layer 3 utilizes TPO waterproof membrane, and the second waterproof layer 5 utilizes polyurethane waterproof coating. The total construction thickness of the two second waterproof layers is ≥ 1.5 mm. Carcass reinforcement material is added to the two second waterproof layers at the internal and external corners to enhance waterproof reliability. Preferably, the leveling layer 4, second waterproof layer 5, and waterproof protective layer 6 all extend to one side of the building body 2.

[0032] Furthermore, in this embodiment, when the leveling layer 4 is installed, a circular arc transition is formed at the inner and outer corners, and the arc radius is ≥50mm. Preferably, both the leveling layer 4 and the waterproof protective layer 6 use polymer-modified waterproof mortar, and the application thickness is 20mm. The strength grade of the waterproof mortar used in the waterproof protective layer 6 is ≥M20. During construction, the waterproof protective layer 6 is embedded with alkali-resistant glass fiber mesh to enhance the crack resistance of the waterproof protective layer 6. It should be noted that the addition of carcass reinforcement material to the second waterproof layer 5 and the embedding of alkali-resistant glass fiber mesh in the waterproof protective layer 6 in this embodiment are both publicly known prior art in the art and are therefore not further described.

[0033] The embodiment of the present invention further provides a method for constructing a metal curtain wall slope leakage prevention structure, which is used to construct the above-mentioned metal curtain wall slope leakage prevention structure. The construction method includes the following steps:

[0034] Excavate and clean the leakage location at the interface between the metal curtain wall slope and the building main body, and remove the ineffective sealing material to the metal curtain wall base to maintain the integrity of the metal curtain wall;

[0035] Construct the first waterproof layer on the cleaned metal curtain wall base layer, and make the first waterproof layer overlap and connect with the waterproof layer of the building body;

[0036] On the first waterproof layer, construct a leveling layer and two second waterproof layers in sequence from the direction adjacent to the metal curtain wall base layer to the direction away from the metal curtain wall base layer. When constructing the leveling layer, make the leveling layer form an outward drainage slope inclined towards the second waterproof layer with a slope of ≥2%;

[0037] A protective layer is constructed on the two completed second waterproof layers to complete the prevention and control of the leakage location.

[0038] Furthermore, when constructing the leveling layer and two second waterproof layers in sequence on the first waterproof layer from the direction adjacent to the metal curtain wall base layer to the direction away from the metal curtain wall base layer, the second waterproof layer is constructed after the first second waterproof layer is completely dry, and the coating directions of the two second waterproof layers are perpendicular to each other.

[0039] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A leakage prevention structure for the inclined surface of a metal curtain wall, provided at the interface between the inclined surface of the metal curtain wall and the main body of the building, characterized in that: The leakage prevention structure includes a first waterproof layer, a leveling layer, a second waterproof layer and a waterproof protective layer, which are arranged on the metal curtain wall base layer in sequence from the direction adjacent to the metal curtain wall base layer to the direction away from the metal curtain wall base layer. The first waterproof layer is overlapped and connected with the waterproof layer of the building body. The side of the leveling layer facing the second waterproof layer is formed with an outward drainage slope for guiding the leakage water at the interface to the outside of the metal curtain wall. The second waterproof layer is provided with two layers.

2. The metal curtain wall slope leakage prevention structure according to claim 1, characterized in that: The first waterproof layer is made of TPO waterproof membrane, and the second waterproof layer is made of polyurethane waterproof coating.

3. The metal curtain wall slope leakage prevention structure according to claim 1, characterized in that: The leveling layer, the second waterproof layer and the waterproof protective layer all extend to one side of the building body.

4. The metal curtain wall slope leakage prevention structure according to claim 1, characterized in that: When the leveling layer is set, a circular arc angle transition is formed at the inner corner and the outer corner, and the arc radius is ≥50mm.

5. The metal curtain wall slope leakage prevention structure according to claim 1, characterized in that: The leveling layer and the waterproof protective layer both use polymer modified waterproof mortar, and the strength grade of the waterproof mortar used in the waterproof protective layer is ≥M20.

6. A construction method for a leakage prevention structure on a metal curtain wall slope, characterized in that: The method for constructing the leakage prevention structure of the metal curtain wall slope according to claim 1 comprises the following steps: Excavate and clean the leakage location at the interface between the metal curtain wall slope and the building main body, and remove the ineffective sealing material to the metal curtain wall base to maintain the integrity of the metal curtain wall; Construct the first waterproof layer on the cleaned metal curtain wall base layer, and make the first waterproof layer overlap and connect with the waterproof layer of the building body; A leveling layer and two second waterproof layers are sequentially constructed on the first waterproof layer from the direction adjacent to the metal curtain wall base layer to the direction away from the metal curtain wall base layer. When constructing the leveling layer, the side of the leveling layer facing the second waterproof layer forms an outward drainage slope for guiding leakage water at the interface to the outside of the metal curtain wall. A protective layer is constructed on the two completed second waterproof layers to complete the prevention and control of the leakage location.

7. The construction method of the metal curtain wall slope leakage prevention structure according to claim 6, characterized in that When constructing the leveling layer and two second waterproof layers on the first waterproof layer in the direction adjacent to the metal curtain wall base layer to the direction away from the metal curtain wall base layer, the second waterproof layer shall be constructed after the first second waterproof layer is completely dry, and the coating directions of the two second waterproof layers shall be perpendicular to each other.

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