Bridge cable protection device and bridge

Abstract

The utility model is suitable for the technical field of bridge cable protection, and provides a bridge cable protection device which is used for improving the safety performance of a bridge cable when the bridge cable encounters various accidents. The bridge cable protection device is applied to a bridge cable and mainly comprises a flame-retardant heat-insulation fireproof winding structure and an anti-collision buffering structure. The flame-retardant heat-insulation fireproof winding structure is directly wound and wrapped on the surface of the bridge cable; and the anti-collision buffer structure is fixedly mounted outside the flame-retardant heat-insulation fireproof winding structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge cable protection, in particular to a bridge cable protection device. Background Art

[0002] A suspension bridge, also known as a suspension bridge, is a bridge whose primary load-bearing superstructure is composed of cables (or steel chains) suspended from towers and anchored to both banks (or ends of the bridge). Any bridge whose deck is supported by cables is susceptible to damage from explosions, fires, collisions, and other traffic accidents. This can significantly alter the bridge's load-bearing structure, endangering its safety and potentially leading to further disasters. Utility Model Content

[0003] The purpose of the utility model is to provide a bridge cable protection device for improving the safety performance of the bridge cable when encountering various accidents.

[0004] In a first aspect, the present application provides a bridge cable protection device, which is applied to bridge cables and includes: a flame retardant, heat-insulating and fireproof winding structure, and an anti-collision buffer structure;

[0005] The flame retardant, heat-insulating and fire-proof winding structure is directly wrapped around the surface of the bridge cable;

[0006] The anti-collision buffer structure is fixedly installed outside the flame-retardant, heat-insulating and fire-proof winding structure.

[0007] Optionally, the flame retardant, heat-insulating and waterproof winding structure includes, from the inside to the outside, a vulcanized sealant layer, a high-silica composite aerogel cloth layer, a fiber-reinforced rubber belt layer, a flame retardant sealant layer, and a fluorocarbon topcoat layer.

[0008] Optionally, the anti-collision buffer structure includes: a pair of clasp hoop bases, a plurality of damping buffer structures, and two outer anti-collision plates;

[0009] The inner surfaces of a pair of the clasping hoop bases can be combined to adapt to and cover the outer surface of the bridge cable wrapped with the flame-retardant, heat-insulating and fire-proof wrapping structure;

[0010] One end of the plurality of damping and buffering structures is fixed to the outer surface of the matching hoop, and the other end of the plurality of damping and buffering structures is fixed to the inner surface of the outer anti-collision plate;

[0011] The two outer impact plates can surround and cover part or all of the surface of the bridge cable.

[0012] Optionally, the damping buffer structure is a damping spring, one end of each damping spring is vertically welded to the outer surface of the mating hoop, and the central axis of the damping spring intersects with the central axis of the mating hoop, and the other end of the damping spring is vertically welded to the inner surface of the outer anti-collision plate.

[0013] Optionally, the central axis of the damping spring is perpendicular to the central axis of the mating hoop.

[0014] Optionally, the base of the mating hoop is made of carbon steel; the outer anti-collision plate is also made of carbon steel.

[0015] Optionally, the base of the mating hoop and the outer anti-collision plate are both 5 mm thick.

[0016] Optionally, the damping and buffering structure includes one or more of an inflatable buffering structure, a hydraulic damping and buffering structure, and a piston damping and buffering structure.

[0017] Optionally, a pair of the mating hoop bases are combined and fixed together by high-strength bolts.

[0018] In a second aspect, the present application provides a bridge, comprising the bridge cable protection device described in any one of the first aspects above.

[0019] It can be seen from the above technical solutions that this embodiment has the following advantages:

[0020] The bridge cable protection device applied to the bridge cable in this embodiment mainly includes: a flame retardant, heat-insulating and fire-proof winding structure and an anti-collision buffer structure; wherein the flame retardant, heat-insulating and fire-proof winding structure is directly wrapped around the surface of the bridge cable, and plays a flame retardant, heat-insulating and fire-proof role on the surface of the bridge cable; the anti-collision buffer structure is fixedly installed outside the flame retardant, heat-insulating and fire-proof winding structure, and plays a role in blocking and absorbing the impact of vehicles, explosives and other items on the bridge cable when explosions, combustion, collisions and other accidents occur due to various traffic accidents on the bridge deck, thereby increasing the safety performance of the bridge cable when encountering various accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of an embodiment of the utility model of a bridge cable protection device installed on a cable;

[0022] Figure 2 This is a schematic structural diagram of an embodiment of the utility model of a bridge cable protection device installed on a bridge cable;

[0023] Figure 3 This is a structural diagram of an embodiment of the utility model of a bridge cable protection device installed on a main cable;

[0024] Figure 4 yes Figure 3 A schematic diagram of a cross-section structure at BB in the middle;

[0025] Figure 5 It is a structural schematic diagram of another embodiment of the utility model in which the bridge cable protection device is installed on the main cable. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] It should be noted that when a major traffic accident occurs on a bridge (usually on the bridge deck) causing a vehicle explosion, the combustion temperature can easily reach 1000°C. This temperature will directly cause the strength of the main cable steel wire to drop sharply as the burning time increases, and eventually lose its load-bearing capacity (experiments have shown that generally, the mechanical properties of steel wire will not be affected if the temperature does not exceed 500°C). In view of this, the bridge cable protection device provided in this embodiment must first withstand the damage to the cable protective layer caused by the impact force of the high-speed collision; secondly, it is necessary to prevent the cable protective layer from being damaged by the continuous high-temperature damage caused by the combustion. Experiments have shown that the following bridge cable protection device proposed by the utility model can continuously burn for 1 hour in an environment of 1100°C, and the back temperature of one side of the cable does not exceed 350°C, which can effectively protect the cable steel wire from being damaged by high temperature.

[0028] See also Figure 1 The bridge cables 100 to which the present invention's bridge cable protection device can be applied include, but are not limited to, main cables, stay cables, and suspension cables. The present invention's bridge cable protection device comprises: a flame-retardant, heat-insulating, and fire-resistant wrapping structure 200 and an anti-collision buffer structure 300. The flame-retardant, heat-insulating, and fire-resistant wrapping structure 200 can be directly wrapped around the surface of the bridge cable 100 through on-site construction, providing flame retardancy, heat insulation, and fire protection for the bridge cable surface. The anti-collision buffer structure 30 is fixedly mounted on the outside of the flame-retardant, heat-insulating, and fire-resistant wrapping structure 200. It can block and absorb the impact of vehicles, explosives, and other items on the bridge cable 200 in the event of explosions, combustion, collisions, and other accidents caused by various traffic accidents on the bridge deck, thereby increasing the safety performance of the bridge cable in the event of various accidents.

[0029] Take the suspension bridge as an example, see Figure 2After the main cable 110 crosses the left and right pylons, both ends are anchored at both ends of the bridge respectively. The suspension cable 120 is connected to the main cable 110 through the cable clamp 121. The main cable 110 supports the bridge deck 130 downward through the suspension cable 120. Cars, motorcycles, trucks and other vehicles mainly pass on the bridge deck 130. Since the main cable 110 is hung between the left and right pylons in a parabolic shape, in order to reduce the load of the bridge cable protection device of the utility model on the bridge itself, the bridge cable protection device of the utility model can be installed on part of the main cables and / or suspension cables of the bridge cable according to the actual situation on site. For example, Figure 2 As shown, only the main cables in the A area closest to the bridge deck 130 are selected to install the bridge cable protection device of the present invention.

[0030] For details, please refer to Figure 1 The flame retardant, heat-insulating and waterproof winding structure of the bridge cable protection device of the present invention may include, from the inside to the outside, a vulcanized sealant layer 210, a high-silica composite aerogel cloth layer 220, a fiber-reinforced rubber belt layer 230, a flame retardant sealant layer 240, and a fluorocarbon topcoat layer 250. The various layers of the flame-retardant, heat-insulating and waterproof winding structure can be attached to the cable after construction on site. Among them, the main purpose of the vulcanized sealant layer 210 is to ensure good adhesion between the sealant layer and the cable surface, thereby achieving the effects of corrosion resistance, sealing and weather resistance; the high-silica composite aerogel cloth layer 220 mainly plays a role in isolating the high temperature of combustion from damaging the cable steel wire, and also isolates the open flame from burning the steel structure of the cable; the fiber-reinforced rubber belt layer 230 is bonded to the surface of the high-silica composite aerogel cloth layer 220 by an adhesive, and its function is to fix the high-silica composite aerogel cloth layer 220 while also protecting the main cable; the flame-retardant sealant layer 240 is used to seal the gaps between the cable steel wires, protecting the entire main cable from harmful media such as rainwater entering the interior of the cable; the fluorocarbon topcoat layer 250 is a coating construction, mainly for anti-corrosion.

[0031] See also Figure 3 、 Figure 4 as well as Figure 5 , Figure 3 for Figure 2 The partial schematic diagram of the suspension bridge A area shown in the figure, the bridge cable protection device of the utility model is mainly used for the main cable of the suspension bridge; Figure 4 To follow Figure 3 A schematic cross-sectional view of the structure of the BB shown; Figure 5A structural diagram of a bridge cable protection device installed on a cable. It can be seen that the anti-collision buffer structure 300 of the bridge cable protection device of the present invention includes: a pair of opposing hoop bases 310 (including a first opposing hoop base 311 and a second opposing hoop base 312), a plurality of damping buffer structures 320, and two outer anti-collision plates 330; the inner surfaces of the pair of opposing hoop bases 310 can be combined to adapt to and cover the outer surface of the bridge cable 100 (such as the main cable 110) wrapped with a flame-retardant, heat-insulating and fire-proof winding structure; one end of the plurality of damping buffer structures 320 is fixed to the outer surface of the opposing hoop base 310 (the first opposing hoop base 311 or the second opposing hoop base 312), and the other end of the plurality of damping buffer structures 320 is fixed to the inner surface of the outer anti-collision plate 330; the two outer anti-collision plates 330 can surround and cover part or all of the surface of the bridge cable 100 (such as the main cable 110) so that the outer anti-collision plate 330 can withstand impacts from all directions.

[0032] Further, such as Figure 4 as well as Figure 5 As shown, the damping and buffering structure 320 of the bridge cable protection device of the present invention is a damping spring. One end of each damping spring is welded perpendicularly to the outer surface of the clasp base 310 (first clasp base 311 or second clasp base 312), with the central axis of the damping spring intersecting the central axis of the clasp 310. The other end of the damping spring is welded perpendicularly to the inner surface of the outer anti-collision plate 330. Furthermore, the central axis of the damping spring is perpendicular to the central axis of the clasp 310, ensuring that each damping spring is perpendicularly connected to the clasp 310, thereby better withstanding and distributing the collision force from the outer anti-collision plate 330.

[0033] Specifically, the base 310 of the bridge cable protection device of the present invention is made of carbon steel; the outer anti-collision plate 330 is also made of carbon steel; the base 310 of the bridge cable protection device and the outer anti-collision plate 330 are both 5 mm thick. Figure 4 、 Figure 5 As shown, a pair of clasping hoop bases 310 (first clasping hoop bases 311 or second clasping hoop bases 312 ) are combined and fixed together by high-strength bolts 340 passing through through holes 341 .

[0034] In another possible embodiment, the damping and buffering structure of the bridge cable protection device of the present invention may also be one or more of: an inflatable buffering structure, a hydraulic damping and buffering structure, and a piston damping and buffering structure.

[0035] In addition, this embodiment also discloses a bridge (such as a suspension bridge or a cable-stayed bridge), which includes the bridge cable protection device in the above embodiment.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bridge cable protection device, characterized in that: Applied to bridge cables, including: flame retardant, heat-insulating and fire-proof winding structures, anti-collision buffer structures; The flame retardant, heat-insulating and fire-proof winding structure is directly wrapped around the surface of the bridge cable; The anti-collision buffer structure is fixedly installed outside the flame-retardant, heat-insulating and fire-proof winding structure.

2. The bridge cable protection device according to claim 1, characterized in that: The flame retardant, heat-insulating and waterproof winding structure comprises, from the inside to the outside, a vulcanized sealant layer, a high-silica composite aerogel cloth layer, a fiber-reinforced rubber belt layer, a flame retardant sealant layer and a fluorocarbon topcoat layer.

3. The bridge cable protection device according to claim 1, characterized in that: The anti-collision buffer structure includes: a pair of clasp bases, a plurality of damping buffer structures, and two outer anti-collision plates; The inner surfaces of a pair of the clasping hoop bases can be combined to adapt to and cover the outer surface of the bridge cable wrapped with the flame-retardant, heat-insulating and fire-proof wrapping structure; One end of the plurality of damping and buffering structures is fixed to the outer surface of the matching hoop, and the other end of the plurality of damping and buffering structures is fixed to the inner surface of the outer anti-collision plate; The two outer impact plates can surround and cover part or all of the surface of the bridge cable.

4. The bridge cable protection device according to claim 3, characterized in that: The damping buffer structure is a damping spring, one end of each damping spring is vertically welded to the outer surface of the mating hoop, and the central axis of the damping spring intersects with the central axis of the mating hoop, and the other end of the damping spring is vertically welded to the inner surface of the outer anti-collision plate.

5. The bridge cable protection device according to claim 4, characterized in that: The central axis of the damping spring is perpendicular to the central axis of the matching hoop.

6. The bridge cable protection device according to claim 3, characterized in that: The base of the mating hoop is made of carbon steel; the outer anti-collision plate is also made of carbon steel.

7. The bridge cable protection device according to claim 3, characterized in that: The thickness of the said coupling hoop base and the said outer anti-collision plate are both 5 mm.

8. The bridge cable protection device according to claim 3, characterized in that: The damping and buffering structure includes: one or more of an inflatable buffering structure, a hydraulic damping and buffering structure, and a piston damping and buffering structure.

9. The bridge cable protection device according to claim 3, characterized in that: A pair of the matching hoop bases are combined and fixed together by high-strength bolts.

10. A bridge, characterized in that: The bridge comprises the bridge cable protection device according to any one of claims 1 to 9.

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