A terminal fixing device for waterproofing membrane

Abstract

The application provides a pi type waterproof roll material end fixing device, which comprises a pi type workpiece, the pi type workpiece is in the shape of pi, which is composed of a bottom plate and two side plates, the upper section of the two side plates is inclined to the middle part, and the upper edge is bent and extended outward to form a flange for fixing, and the flange is provided with a fixing hole for nails or screws to pass through; the outer surface of the pi type workpiece is used for contacting with concrete, and is designed with concave-convex lines, holes or roughened lines, the inner part is used for mounting the waterproof roll material, and is compressed through a round sealing rubber stick. The application systematically solves a series of problems of waterproof roll material end fixing, sealing and surface layer treatment, and has very high engineering application value and popularization prospect.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a π-type waterproof membrane end fixing device. Background Technology

[0002] In waterproofing construction of underground engineering, roofs, and terraces, reliable fixation of the ends of waterproof membranes is a crucial step in ensuring the effectiveness of the overall waterproofing system and has long been a technical challenge. Traditional construction methods, such as mechanical nailing or chemical adhesives, have many inherent drawbacks. Mechanical nailing requires drilling holes in the structural core, which not only damages the integrity of the concrete and introduces potential seepage channels, but also has low drilling efficiency, is difficult to implement in areas with dense reinforcement, and its reliability is greatly affected by the quality of the concrete, making it prone to loosening. Chemical adhesives, on the other hand, are limited by the aging properties of the adhesive, environmental temperature and humidity, and the cleanliness of the substrate, making long-term reliability difficult to guarantee and posing a significant risk of membrane edge curling and detachment. Whether mechanically fixed or chemically bonded, failure of either method will cause the waterproof membrane to peel off from the ends under external environmental influences (such as wind loads, structural deformation, and moisture pressure), leading to the collapse of the entire waterproofing system. Furthermore, after the ends of the waterproof membrane are fixed, a cement mortar plaster is usually applied to its surface for protection and leveling. However, due to the extremely poor adhesion between the smooth membrane surface and the cement mortar, coupled with potential slight movements at the fixing points, the surface plaster layer is prone to hollowing, cracking, or even complete detachment, severely affecting subsequent decoration work and the final building's functionality. Therefore, current technology urgently needs a comprehensive solution that can provide physical anchoring for the ends of the waterproof membrane, eliminate the need for subsequent drilling, allow for simultaneous construction with the concrete structure, and ensure the long-term stability of the surface plaster layer. Summary of the Invention

[0003] To address the above problems, the present invention provides a π-type waterproof membrane end fixing device.

[0004] The specific plan is as follows: A π-shaped waterproof membrane end fixing device includes a π-shaped workpiece, which is π-shaped and consists of a base plate and two side plates. The upper sections of the two side plates are inclined towards the center, and the upper edges are bent outward to form flanges for fixing. Fixing holes for nails or screws to pass through are reserved on the flanges. The outer surface of the π-shaped workpiece is designed to contact concrete with concave and convex textures, holes, or roughened textures to greatly enhance the mechanical bonding force with concrete. The interior is used to install the waterproof membrane and is pressed tightly by a circular sealing glue rod.

[0005] Furthermore, the π-shaped workpiece is a metal or high-strength plastic workpiece.

[0006] Furthermore, the π-shaped workpiece and the boss are integrally formed.

[0007] Furthermore, the flange surface of the π-shaped workpiece is evenly distributed with bosses.

[0008] Furthermore, the circular sealing rod is a porous polyethylene foam rod or a rubber rod.

[0009] Furthermore, the π-shaped workpiece is fixed inside the support template by nails or screws.

[0010] The beneficial effects of this invention are as follows: This invention brings revolutionary technological advancements and comprehensive benefits through its innovative integrated design of "pre-embedded groove, pressure rod fixing, and mechanical interlocking." Its primary advantage lies in fundamentally changing the way waterproof membrane ends are fixed, transforming it from fragile "point fixing" or easily aging "surface bonding" to reliable "linear physical anchoring." The continuous lateral pressure generated by pressing the sealant rod into the pre-embedded groove provides uniform, strong, and durable fixing force to the membrane end, effectively resisting membrane peel stress and greatly improving the safety margin and long-term reliability of the waterproofing system. Furthermore, the fixing process requires no drilling or chemical reagents, making it environmentally friendly. Secondly, the device is constructed simultaneously with the concrete structure, achieving integration of "structure and construction measures." The pre-embedded π-shaped workpiece tightly interlocks with the concrete through surface texture, becoming part of the structure, resulting in strong integrity and avoiding damage to the main structure and leakage risks during later reinforcement. The construction process is smooth, significantly improving efficiency and shortening the construction period. Thirdly, this solution effectively solves the problem of surface layer detachment in the end area. The π-shaped workpiece itself serves as an ideal "transition medium" and "reinforcing structure." Its surface texture and cavity structure provide an excellent adhesion substrate and mechanical interlocking conditions for the cement mortar plaster layer. Combined with the used crack-resistant mesh fabric, this creates a rigid, gradually changing, stress-dispersing reinforced area, ensuring a firm bond between the surface plaster layer and the waterproof end structure. This fundamentally eliminates the risks of hollowing and cracking, guaranteeing the aesthetics and durability of the building facade. In summary, this invention systematically solves a series of problems related to the fixing, sealing, and surface treatment of waterproof membrane ends, possessing extremely high engineering application value and promising prospects for widespread adoption. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the present invention.

[0012] Figure 2 for Figure 1 A diagram showing how to remove the round sealing stick.

[0013] Figure 3 This is a schematic diagram of the present invention after concrete has been poured.

[0014] Figure 4 This is a schematic diagram of the final form of the present invention.

[0015] List of reference numerals in the attached diagram: 1- Nail; 2- Boss; 3- π-shaped workpiece; 4- Circular sealing rod; 5- Supporting template; 6- Concrete; 7- Waterproof membrane; 8- Surface layer. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0017] As shown in the figure, the present invention provides a π-type waterproof membrane end fixing device, including a π-type workpiece 3. The π-type workpiece 3 is π-shaped and consists of a base plate and two side plates. The upper sections of the two side plates are inclined towards the middle, and the upper edges are bent outward to form flanges for fixing. Fixing holes for nails 1 or screws to pass through are reserved on the flanges. The outer surface of the π-type workpiece 3 is designed to contact concrete, with concave and convex textures, holes or roughened textures to greatly enhance the mechanical bonding force with concrete. The interior is used to install the waterproof membrane 7 and is pressed tightly by a circular sealing rod 4.

[0018] In this embodiment, the π-shaped workpiece is a metal or high-strength plastic workpiece.

[0019] In this embodiment, the π-shaped workpiece and the boss are integrally formed.

[0020] In this embodiment, the flange surface of the π-shaped workpiece is evenly distributed with bosses 2.

[0021] In this embodiment, the circular sealing rod is a porous polyethylene foam rod or a rubber rod.

[0022] In this embodiment, the π-shaped workpiece 3 is fixed inside the support template by nails 1 or screws.

[0023] The corresponding construction method includes the following steps: First, positioning and marking lines are made at the designated elevation positions of the supporting formwork (such as roof, basement top slab, or wall formwork); then, the flanges of the π-shaped groove workpiece are tightly fixed to the formwork with nails or self-tapping screws, ensuring that the inner surface of the workpiece's bottom plate is in contact with the formwork, and that the opening of the entire groove faces away from the formwork; next, concrete 6 is poured and cured; after the concrete reaches its strength and the formwork is removed, the π-shaped groove workpiece is pre-embedded and firmly anchored to the concrete structure surface, forming a clear groove at its bottom plate position, and the cavity of the groove is fully exposed. During the waterproofing layer construction, the end of the waterproof membrane is introduced and laid in the prefabricated groove cavity. Subsequently, a round sealing rod with elasticity and waterproof performance (such as a closed-cell foam polyethylene rod or rubber rod) is forcefully pressed into the groove cavity, using the rebound expansion force of the rod to tightly press the end of the membrane against the bottom and sidewalls of the groove, achieving a non-destructive and firm mechanical fixation. Finally, an interface agent is applied to the fixed device and the surrounding concrete surface, and a layer of crack-resistant mesh is laid. Then, cement mortar is applied to form the surface layer 8. Because the surface of the grooved workpiece has texture, and the plaster layer forms a "key"-like mechanical interlock through the cavity structure of the groove and the crack-resistant mesh, the problem of plaster layer peeling off is completely solved.

[0024] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A π-type waterproof membrane end fixing device, characterized in that, The product includes a π-shaped workpiece, which is π-shaped and consists of a base plate and two side plates. The upper sections of the two side plates are inclined towards the center, and the upper edges are bent outward to form flanges for fixing. Fixing holes for nails or screws to pass through are reserved on the flanges. The outer surface of the π-shaped workpiece is designed to contact concrete with concave and convex textures, holes or roughened textures. The interior is used to install waterproof membrane and is pressed tightly by a circular sealing glue rod.

2. The π-type waterproof membrane end fixing device according to claim 1, characterized in that, The π-shaped workpiece is a metal or high-strength plastic workpiece.

3. The π-type waterproof membrane end fixing device according to claim 1, characterized in that, The π-shaped workpiece and the boss are integrally formed.

4. The π-type waterproof membrane end fixing device according to claim 1, characterized in that, The flange surface of the π-shaped workpiece is uniformly covered with bosses.

5. The π-type waterproof membrane end fixing device according to claim 1, characterized in that, The circular sealing rod is a porous polyethylene foam rod or a rubber rod.

6. The π-type waterproof membrane end fixing device according to claim 1, characterized in that, The π-shaped workpiece is fixed inside the support template by nails or screws.

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