Enhanced fire-resistant protective felt belt for bridge

Abstract

The utility model relates to an enhanced fire-resistant protective felt tape for a bridge. The enhanced fire-resistant protective felt tape comprises a fire-resistant layer, an outer wrapping layer and a bonding layer, the fire-resistant layer is vertically wrapped by the outer wrapping layer, the edge of the outer wrapping layer is fixed in an edge pressing mode, and a bonding layer is arranged on the upper face or the lower face of the outer wrapping layer. The fire-resistant layer is composed of a single layer or multiple layers of aerogel felts; the outer wrapping layer is flame-retardant wrapping cloth, and cloth surface gaps of the flame-retardant wrapping cloth are smaller than the size of aerogel felt particles. The aerogel felt material is arranged in the flame-retardant coating cloth, so that the problem of powder falling of the aerogel felt material in the construction process can be effectively solved. Meanwhile, the bonding layer is arranged on one face of the flame-retardant covering cloth, the fireproof felt tape can be directly wound on the main cable during construction, and the problem that the bonding effect is poor due to the fact that the aerogel felt and the surface of the main cable are directly bonded is solved. By means of the mode, the flatness of construction is improved, the fireproof effect is easier to control in a unified mode, and meanwhile the construction efficiency is improved to a large extent.

Description

Technical Field

[0001] This utility model relates to the technical field of fire protection for bridge main cables, and in particular to an enhanced bridge fire-resistant protective felt strip. Background Technology

[0002] With the continuous development of bridge construction, suspension bridges have become widely used due to their advantages such as lightweight structure and large span. However, the cable system of suspension bridges is exposed and particularly vulnerable to fire. Fire not only damages the surface material of the cables but also reduces the strength of the steel wires, thus affecting the structural safety of the bridge.

[0003] Aerogel felt is a material with excellent fire resistance and is increasingly being used in the fire protection of suspension bridge main cables. However, due to its high hydrophobicity, low surface energy, and good chemical stability, aerogel felt cannot form good adhesion, resulting in poor bonding. Therefore, currently, aerogel felt is mostly used in the wrapping method for fire protection of main cables. It is cut on-site according to the required size and then tied to the main cable with steel cable ties. However, the steel cable tie binding can cause the aerogel felt wrapping layer to slip and loosen easily. At the same time, due to the structural characteristics of the aerogel material itself and the production process, it is easy to shed large amounts of dust during construction. This dust not only causes pollution but is also harmful to human health. Utility Model Content

[0004] In view of the problems of easy slippage and loosening of aerogel felt due to steel strapping and large-area powder shedding in the existing technology, this utility model provides an enhanced bridge fire-resistant protective felt strip, including a fire-resistant layer, an outer layer and an adhesive layer; the fire-resistant layer is accommodated between two outer layers, and the edges of each layer are fixed by pressing the edges; the adhesive layer is provided on the top or bottom of the outer layer.

[0005] The fire-resistant layer is composed of a single layer or multiple layers of aerogel felt; the outer layer is a flame-retardant covering fabric, and the gaps between the fabric surfaces of the flame-retardant covering fabric are smaller than the size of the aerogel felt particles.

[0006] Furthermore, the pressing method employs a stitching-type fixation using sewing thread.

[0007] Furthermore, the sewing thread is fire-resistant.

[0008] Furthermore, the pressing method employs nailing for fixation.

[0009] Furthermore, the outer cladding layer is made of one of the following: double-sided fiberglass cloth, aluminum foil cloth, or high-silica cloth.

[0010] Furthermore, the adhesive layer is a double-sided adhesive colloid.

[0011] Furthermore, the width of the adhesive layer is smaller than the width of the outer layer.

[0012] Furthermore, the adhesive layer is butyl tape with a thickness of 1 mm or more, and the distance between one edge of the adhesive layer and the edge of the outer layer on the same side is greater than 8 mm.

[0013] Furthermore, the butyl tape has reinforcing ribs.

[0014] Furthermore, the protective felt strip is a long strip of adhesive tape, the width and thickness of which can be customized according to project needs.

[0015] Compared with the prior art, this utility model has the following beneficial effects:

[0016] By embedding aerogel felt material within a flame-retardant covering fabric with gaps smaller than the aerogel felt particles, the problem of aerogel felt material shedding powder during main cable protection construction can be effectively solved. Simultaneously, an adhesive layer is applied to one side of the flame-retardant covering fabric, allowing fireproof felt strips to be directly wrapped around the main cable during construction, resolving the issue of poor adhesion between aerogel felt and the main cable surface when directly bonded. Furthermore, this method eliminates the on-site measurement, cutting, and binding processes required for traditional aerogel felt wrapping, improving the flatness of the construction, making fireproof performance easier to control uniformly, and significantly increasing construction efficiency. Attached Figure Description

[0017] Figure 1 This is an example of an enhanced bridge fire-resistant protective felt strip in this utility model embodiment;

[0018] Figure 2 This utility model relates to a structural layer of an enhanced bridge fire-resistant protective felt strip.

[0019] Figure 3 This is the sewing edge pressing method of this utility model;

[0020] Figure 4 This is the nailing and pressing edge form of this utility model;

[0021] In the diagram: 1. Fire-resistant layer; 2. Outer cladding layer; 3. Adhesive layer; 4. Edge pressing section. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. The terms "upper," "lower," "front," "rear," "top," "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or part referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be understood that such data can be interchanged where appropriate for the embodiments of this utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0024] This utility model provides an enhanced fire-resistant protective felt strip for bridges, such as Figure 2 As shown, it includes a fire-resistant layer 1, an outer cladding layer 2, and an adhesive layer 3; the fire-resistant layer 1 is housed between two outer cladding layers 2, and the edges of each layer are fixed by pressing. An adhesive layer 3 is provided on the top or bottom of the outer cladding layer 2.

[0025] The fire-resistant layer 1 is composed of a single or multiple layers of aerogel felt; the outer layer 2 is a flame-retardant covering fabric, and the gaps between the fabric surfaces of the flame-retardant covering fabric are smaller than the size of the aerogel felt particles.

[0026] By embedding aerogel felt material within a flame-retardant covering fabric with gaps smaller than the aerogel felt particles, the problem of aerogel felt material shedding powder during main cable protection construction can be effectively solved. Simultaneously, double-sided adhesive is applied to one side of the flame-retardant covering fabric. During main cable fireproofing, the other side of the adhesive is simply peeled off, allowing the protective felt strip to be wrapped around the main cable surface sequentially, thus resolving the issue of poor adhesion between the aerogel felt and the main cable surface when directly bonded. Furthermore, this method eliminates the on-site measurement, cutting, and binding processes required for traditional aerogel felt wrapping, improving the flatness of the construction, making the fireproofing effect easier to control uniformly, and significantly increasing construction efficiency.

[0027] To better secure the fire-resistant layer 1 within the outer sheath 2, edge-pressing and securing are performed on both sides along the length of the protective felt strip. Various securing methods can be employed, such as... Figures 2-4 The pressing part 4 is shown in the figure. Figure 3 As shown, the edge is secured using a sewing method with thread. Furthermore, to further enhance the fire resistance, the sewing thread is fire-resistant. For example... Figure 4 As shown, the edge pressing method uses a stapled fixing. The stapled principle is analogous to staple binding, using thin metal staples or other materials similar to staples to fix the fire-resistant layer 1 and the outer layer 2 together. The staples pass through the fabric and bend on the back to maintain the connection between the two layers.

[0028] The outer cladding layer 2 is made of one of the following: double-sided fiberglass cloth, aluminum foil cloth, or high-silica cloth. These materials all have high temperature resistance, as well as certain flame retardancy and chemical resistance, which can improve the overall fire resistance of the structure.

[0029] During on-site construction, the adhesive layer 3 is a double-sided adhesive colloid to facilitate the wrapping of the protective felt strip.

[0030] To prevent the adhesive layer 3 from being ignited in a fire environment, the width of the adhesive layer 3 is smaller than the width of the outer layer 2.

[0031] Preferably, the adhesive layer 3 is butyl tape with a thickness of 1 mm or more, and the distance between one edge of the adhesive layer 3 and the edge of the outer wrapping layer 2 on the same side is greater than 8 mm.

[0032] Preferably, the butyl tape has reinforcing ribs, resulting in superior mechanical properties.

[0033] For ease of storage and transportation, such as Figure 1 As shown, in this embodiment, an enhanced bridge fire-resistant protective felt strip is a long strip of adhesive tape, which can also be folded and stacked. Furthermore, the width and thickness of this protective felt strip can be customized according to project requirements.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of implementation of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and all such improvements and modifications should be covered within the protection scope of this utility model.

Claims

1. An enhanced bridge fire protection blanket tape, characterized by, It comprises a fire-resistant layer (1), an outer layer (2) and a bonding layer (3); the fire-resistant layer (1) is contained between two layers of the outer layer (2), and the edges of each layer are fixed by edge pressing; the upper surface or lower surface of the outer layer (2) is provided with the bonding layer (3); The fire-resistant layer (1) is composed of single or multiple layers of aerogel blanket; the outer layer (2) is a flame-retardant type covering cloth, and the gap between the cloth surfaces of the flame-retardant type covering cloth is smaller than the size of the aerogel blanket particles.

2. The reinforced bridge fire protection blanket strip of claim 1, wherein, The edge pressing method adopts suture type fixation by sewing thread sewing.

3. The reinforced bridge fire protection blanket strip of claim 2, wherein, The sewing thread is fireproof thread.

4. The reinforced bridge fire protection blanket strip of claim 1, wherein, The edge pressing method adopts nail fixation.

5. The reinforced bridge fire protection blanket strip of claim 1, wherein, The outer layer (2) adopts one of double-sided glass fiber cloth, aluminum foil cloth and high-silicon cloth.

6. The reinforced bridge fire protection blanket strip of claim 1, wherein, The bonding layer (3) is a double-sided adhesive colloid.

7. The reinforced bridge fire protection blanket strip of claim 1, wherein, The width of the bonding layer (3) is less than the width of the outer layer (2).

8. The reinforced bridge fire protection blanket strip of claim 6, wherein, The bonding layer (3) is a butyl adhesive tape with a thickness greater than or equal to 1mm, and the distance between the single-side edge of the bonding layer (3) and the same-side edge of the outer layer (2) is greater than 8mm.

9. The reinforced bridge fire protection blanket strip of claim 8, wherein, The butyl adhesive tape has reinforcing ribs.

10. The reinforced bridge fire protection blanket strip of claim 1, wherein, The protective felt belt is a long strip-shaped adhesive tape roll, and the width and thickness can be customized according to engineering needs.

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