CN212925780U - Protective fabric for bridge cable - Google Patents

Abstract

The utility model relates to a bridge is protective fabric for cable, basalt fiber cloth, high temperature resistant layer, polytetrafluoroethylene thin layer and waterproof layer are in proper order from inside to outside. The utility model discloses a protective fabric is outer closely knit, has waterproof, resistant time, high temperature resistance characteristic, can effectively block the effect of thermal shock in the twinkling of an eye when catching a fire simultaneously.

Description

Protective fabric for bridge cable

Technical Field

The utility model belongs to the technical field of the building engineering protection, concretely relates to bridge is protective fabric for cable.

Background

With the acceleration of the road infrastructure construction process in China, the bridge engineering is continuously increased, the suspension bridge, the cable-stayed bridge, the arch suspension bridge and the like enable a large-span bridge structure to be applied at present, and a bridge cable system is a main bearing structure of the suspension bridge, the cable-stayed bridge and the arch suspension bridge, and can be said to be a 'safe lifeline' of the bridge. Because the lock body and the anchorage device structure are in natural environments crossing rivers, lakes and seas and exposed in environments with wind, rain, moisture and polluted air for a long time, the lock body and the anchorage device structure are easy to be corroded and damaged, and threats of high temperature, impact load and the like exist, so that once a cable system is damaged, the consequences cannot be imagined. The examples of the damage and failure of the cable are existed at home and abroad, and in the field of bridges, safety accidents and economic losses caused by the damage and failure of a cable system are very disastrous. In order to ensure the safety of the bridge and the cable structure, the cable must be protected in relation to each other.

The existing basalt fiber cloth has more pores, cannot achieve the purposes of water resistance and weather resistance when being used as a cable rope protective material, and cannot well block the thermal shock effect of instantaneous high temperature when a fire happens.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the above-mentioned prior art, the utility model aims to provide a protective fabric for bridge cable, its structure is closely knit, has waterproof, resistant time, high temperature resistance characteristic, can effectively block the effect of thermal shock in the twinkling of an eye when catching a fire simultaneously.

In order to realize the purpose of the utility model, the utility model provides a technical scheme as follows:

a protective fabric for a bridge cable comprises basalt fiber cloth, a high temperature resistant layer, a polytetrafluoroethylene film layer and a waterproof layer from inside to outside in sequence.

Further, the specification of the basalt fiber cloth is 200g/m²-600g/m²。

Further, the thickness of the high temperature resistant layer is 0.01mm-2 mm.

Further, the thickness of the polytetrafluoroethylene film layer is 0.01-1.5 mm.

Further, the thickness of the waterproof layer is 0.01-0.5 mm.

The utility model discloses improved basalt fiber cloth's weatherability and high temperature resistance on basalt fiber cloth's basis, increased waterproof performance simultaneously, further improved the application of basalt fiber in bridge cable protective structure.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic diagram of the test of the fire-retardant property of example 1;

fig. 3 is a schematic diagram of the test of the fire-retardant property of comparative example 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1, the protective fabric for the bridge cable sequentially comprises basalt fiber cloth, a high temperature resistant layer, a polytetrafluoroethylene film layer and a waterproof layer from inside to outside.

First, 300g/m is selected²The basalt fiber cloth is coated with the high-temperature resistant layer. The refractory layer can be a commercially available refractory coating material, such as PTFE emulsion with refractory alumina, silica or zirconia particles, mixed togetherAfter being uniformly coated, the coating is uniformly and completely coated on the surface of the basalt fiber cloth, and the thickness of the coating is 1 mm; drying at 80-100 ℃ for 2h, then hot-pressing a polytetrafluoroethylene film with the thickness of 0.5mm on the surface of the coating layer, then soaking the coating layer in a fluorine-based waterproof agent to form a waterproof layer with the thickness of 0.2mm, and finally obtaining the waterproof, weather-resistant and high-temperature-resistant basalt fiber cloth after drying.

Example 2

Except that the selection is 210g/m²The same procedure as in example 1 was repeated except for the basalt fiber cloth.

Comparative examples 1 to 2

Commercial 300g/m²And 210g/m²The basalt fiber cloth is respectively sprayed with waterproof coatings before use, and the thickness of each waterproof coating is 0.2 mm.

The fire resistance tests were carried out for both example 1 and comparative example 1, and the test results are shown in FIGS. 2 to 3. It can be seen from the figure that the protective fabric of example 1 has an internal temperature of only about 200 c, while comparative example 1 has an internal temperature of up to 400 c, with an external ambient temperature of up to 900 c. Obviously, the fire behavior of this embodiment is more excellent, can effectively play the effect to the protection of bridge cable.

For further test results of the above examples and comparative examples, see table 1.

TABLE 1

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (5)

1. The protective fabric for the bridge cable is characterized by sequentially comprising basalt fiber cloth, a high-temperature-resistant layer, a polytetrafluoroethylene film layer and a waterproof layer from inside to outside.

2. The bridge cable protective fabric of claim 1, wherein the basalt fiber cloth has a gauge of 200g/m²-600g/m²。

3. The protective fabric for a bridge cable according to claim 1, wherein the thickness of the high temperature resistant layer is 0.01mm to 2 mm.

4. The protective fabric for bridge cables as claimed in claim 1, wherein the thickness of the teflon film layer is 0.01-1.5 mm.

5. The protective fabric for bridge cables as claimed in claim 1, wherein the waterproof layer has a thickness of 0.01-0.5 mm.

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