Inhaul cable sheath assembly

Abstract

The utility model discloses an inhaul cable sheath assembly, and relates to the technical field of building components. The inhaul cable comprises an inhaul cable body and a protection set used for protecting the inhaul cable body. The inhaul cable body comprises an inhaul cable and anchorage devices anchored to the two ends of the inhaul cable. The protection set comprises embedded pipes, a protection cover, a shock absorber, a waterproof cover and an outer wrapping belt, wherein the embedded pipes, the protection cover, the shock absorber and the waterproof cover are arranged at the beam end and the tower end of the cable-stayed bridge in advance, and the inhaul cable is wrapped with the outer wrapping belt. The anchorage device is arranged in the embedded pipe, and the protection cover is arranged at the bottom of the embedded pipe and used for protecting the anchorage device and the inhaul cable. The shock absorber is arranged on the top of the embedded pipe and arranged on the inhaul cable in a sleeving mode so as to restrain vibration of the inhaul cable. The waterproof cover is arranged on the top of the embedded pipe and the inhaul cable. By adopting the inhaul cable sheath assembly provided by the utility model, the problems that the waterproof performance is insufficient and the inhaul cable sheath is easy to damage in the prior art can be solved.

Description

Technical Field

[0001] This utility model relates to the field of building component technology, and in particular to a cable sheath assembly. Background Technology

[0002] As a key load-bearing component in modern bridge engineering, stay cables are widely used in long-span bridges, favored for their efficient load-bearing performance and economic efficiency. However, with the passage of time and the influence of the operating environment, existing stay cables and their sheaths have gradually revealed some limitations and shortcomings.

[0003] The anchor cups are filled with a large amount of water, the anchorages are severely corroded, which reduces the anchoring performance and affects the long-term stability of the cables. The waterproof performance is insufficient and it is difficult to adapt to long-term outdoor exposure.

[0004] At certain locations on a stay cable, the cable sheath is prone to damage, and there may be undetected internal damage, leading to corrosion of the internal steel wires and affecting the cable's durability.

[0005] Therefore, there is an urgent need to design a cable sheath assembly to solve the above problems. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a cable sheath assembly that can solve the problems of insufficient waterproof performance and easy damage of cable sheaths in the prior art.

[0007] To address the aforementioned technical problems, this utility model provides a cable sheath assembly, comprising a cable body and a protective group for protecting the cable body; the cable body includes a cable and anchors at both ends of the cable; the protective group includes pre-embedded pipes, protective covers, vibration dampers, waterproof covers, and outer wrapping tape covering the cable, all pre-installed at the beam ends and tower ends of the cable-stayed bridge; the anchors are located in the pre-embedded pipes, and the protective cover is located at the bottom of the pre-embedded pipes to protect the anchors and the cable; the vibration dampers are located at the top of the pre-embedded pipes and sleeved on the cable to suppress the vibration of the cable; the waterproof cover is located at the top of the pre-embedded pipes and on the cable.

[0008] As an improvement to the above solution, the embedded pipe is provided with spiral ribs and anchor plates for fixing the protective cover.

[0009] As an improvement to the above solution, a stiffening rib is provided between the anchor plate and the embedded pipe, and the spiral rib is arranged around the embedded pipe; the inner wall of the protective cover is threadedly connected to the surface of the anchor, and the protective cover is bolted to the anchor plate.

[0010] As an improvement to the above solution, the damper includes two damping elements, and each of the two damping elements has a wedge at its end.

[0011] As an improvement to the above solution, the wedges at both ends of the damping member are brought closer together by a tensioning member to compress the damping member into radial expansion.

[0012] As an improvement to the above solution, the damping element is made of rubber.

[0013] As an improvement to the above solution, the two ends of the waterproof cover are respectively wrapped around the embedded pipe and the cable.

[0014] As an improvement to the above solution, the waterproof cover includes two sub-waterproof covers, which are connected to each other by fasteners.

[0015] As an improvement to the above solution, the waterproof cover is made of polyethylene.

[0016] As an improvement to the above solution, the outer wrapping tape is provided with a first polymer film, a first pressure-sensitive adhesive film, a second polymer film, a second pressure-sensitive adhesive film and a release film in sequence from the inside to the outside.

[0017] The beneficial effects of implementing this utility model are as follows:

[0018] This utility model cable sheath assembly protects the anchor and cable in the pre-embedded pipe with the protective cover, reduces the vibration of the cable with the vibration damper, and enhances waterproofing with the waterproof cover, thereby improving the overall protection effect and adapting to long-term outdoor exposure environment.

[0019] The cable is also covered with an outer wrapping tape made of multiple layers of material film, which is not easily damaged and improves the cable's durability. Attached Figure Description

[0020] Figure 1 This is an exploded structural diagram of the cable sheath assembly of this utility model at the beam end of a cable-stayed bridge;

[0021] Figure 2 This is a schematic diagram of the beam ends and tower ends of a cable-stayed bridge;

[0022] Figure 3 This is a schematic diagram of the stiffening ribs and protective cover of the pre-embedded pipe in this utility model;

[0023] Figure 4 This is an exploded view of the shock absorber in this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the shock absorber installed between the pre-embedded pipe and the cable in this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the waterproof cover installed on the embedded pipe and cable in this utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the outer wrapping tape in this utility model. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside, and outside appearing or about to appear in this document are based solely on the accompanying drawings and are not intended to specifically limit the scope of the present invention.

[0028] like Figure 1 and Figure 2 As shown, the connection between the cable sheath assembly of this utility model and the beam 1' of the cable-stayed bridge is beam end 11', and the connection between the cable sheath assembly and the tower 2' of the cable-stayed bridge is tower end 21'. The cable sheath assembly of this utility model has the same configuration at beam end 11' and tower end 21'. For ease of explanation, only the configuration at beam end 11' will be used as an example for specific explanation.

[0029] Figure 1 This invention demonstrates the disassembled structure of the cable sheath assembly of this utility model at end 11' of a cable-stayed bridge. The cable sheath assembly includes a cable body 1 and a protective assembly 2 for protecting the cable body 1. The cable body 1 includes a cable 11 and anchorages 12 anchored at both ends of the cable 11. The protective assembly 2 includes a pre-embedded pipe 21, a protective cover 22, a vibration damper 23, a waterproof cover 24, and an outer wrapping tape 25 covering the cable 11, all pre-embedded at the beam end and tower end of the cable-stayed bridge. The anchorages 12 are located in the pre-embedded pipe 21, and the protective cover 22 is located at the bottom of the pre-embedded pipe 21 to protect the anchorages 12 and the cable 11. The vibration damper 23 is located at the top of the pre-embedded pipe 21 and is fitted onto the cable 11 to suppress the vibration of the cable 11. The waterproof cover 24 is located at the top of the pre-embedded pipe 21 and on the cable 11.

[0030] It should be noted that, since the example is taken as the beam end 11' of the cable-stayed bridge, the bottom of the pre-embedded pipe 21 in this embodiment is the end facing away from the tower end 21' of the cable-stayed bridge, and the top of the pre-embedded pipe 21 is the end facing the tower end 21' of the cable-stayed bridge.

[0031] This utility model cable sheath assembly protects the anchor 12 and cable 11 in the pre-embedded pipe 21 through the protective cover 22, reduces the vibration of the cable 11 through the vibration damper 23, and is waterproofed through the waterproof cover 24, thereby improving the overall protection effect and adapting to long-term outdoor exposure environment.

[0032] like Figure 1 and Figure 3As shown, in order to transfer stress and enhance anchoring, the embedded pipe 21 is provided with a spiral rib 21b and an anchor plate 21a for fixing the protective cover 22.

[0033] To strengthen the connection between the anchor plate 21a and the embedded pipe 21, a stiffening rib 21c is provided between the anchor plate 21a and the embedded pipe 21, and a spiral rib 21b is arranged around the embedded pipe 21; the inner wall of the protective cover 22 is threadedly connected to the surface of the anchor 12, and the protective cover 22 is bolted to the anchor plate 21a.

[0034] Preferably, a 2mm rubber gasket is provided between the protective cover 22 and the anchor plate 21a. More preferably, the protective cover 22 is installed before the anchor plate 21a, the surface of the anchor 12 is coated with special protective grease, and the protective cover 22 is filled with anti-corrosion grease.

[0035] It should be noted that the anchor plate 21a allows the protective cover 22 to be connected and also distributes the force transmitted by the cable 11 evenly into the concrete at the beam end 11', preventing force concentration that could lead to localized damage. The spiral reinforcement 21b enhances the anchoring effect by increasing the frictional resistance between the spiral reinforcement 21b and the concrete, thereby increasing the anchoring force. The spiral reinforcement 21b also helps to distribute the concentrated force transmitted by the cable 11 more evenly onto the concrete, reducing localized stress concentration, preventing concrete cracking or damage, and improving structural stability.

[0036] like Figure 1 , Figure 4 and Figure 5 As shown, specifically, the damper 23 includes two damping elements 23a, and each end of the two damping elements 23a is provided with a wedge 23b.

[0037] The wedges 23b at both ends of the damping member 23a are brought close together by a tensioning member to compress the damping member 23a to expand radially.

[0038] Preferably, the damping element 23a is made of rubber, and the tensioning element is a bolt and a nut. The bolt passes sequentially through a wedge 23b at one end of the damping element 23a, the damping element 23a itself, and a wedge 23b at the other end of the damping element 23a, before the nut is screwed on. When the nut is tightened, the wedges 23b at both ends of the damping element 23a move closer together, causing the damping element 23a to be compressed and expand radially, thereby pressing tightly against the embedded pipe 21 and the cable 11. The vibration damper 23, through the damping element 23a which directly contacts the cable 11 and the embedded pipe 21, consumes the vibration energy transmitted by the cable 11, thereby reducing the vibration of the cable 11. It can significantly reduce various types of vibrations.

[0039] like Figure 1 and Figure 6 As shown, the two ends of the waterproof cover 24 are respectively wrapped around the embedded pipe 21 and the cable 11.

[0040] For ease of installation, the waterproof cover 24 includes two sub-waterproof covers 24a, which are connected by fasteners, preferably bolts.

[0041] Preferably, the waterproof cover is made of polyethylene, and a sealing rubber ring is provided between the waterproof cover 24 and the pre-embedded pipe 21 and the cable 11, and a non-drying sealant is applied.

[0042] It should be noted that, in order to reduce costs and construction, the waterproof cover 24 may not be installed at the tower end 21'. The waterproof cover 24 is installed on the cable 11 and the embedded pipe 21 to provide a seal, prevent moisture and corrosive substances from entering, protect the cable 11 from rainwater erosion, and at the same time, the waterproof cover 24 can absorb some vibration, thus playing a certain role in vibration reduction.

[0043] like Figure 1 and Figure 7 As shown, the outer wrapping tape 25 is provided with a first polymer film 25a, a first pressure-sensitive adhesive film 25b, a second polymer film 25c, a second pressure-sensitive adhesive film 25d and a release film 25e in sequence from the inside to the outside.

[0044] Preferably, the first polymeric film 25a and the second polymeric film 25c are made of polyvinyl fluoride (PVC). The PVC-based first polymeric film 25a and second polymeric film 25c possess high strength, excellent weather resistance, chemical resistance, and easy-to-clean properties, providing protection against ultraviolet rays, air, rain, and vehicle exhaust fumes outdoors. The first pressure-sensitive adhesive film 25b and the second pressure-sensitive adhesive film 25d maintain good adhesion to the first polymeric film 25a and the second polymeric film 25c within the bridge's operating temperature range, ensuring the outer wrapping tape 25 is firm and wrinkle-free, completely adhering to the surface of the cable 11. This effectively prevents moisture and humidity from penetrating into the cable 11, avoiding corrosion caused by dampness. Furthermore, the first pressure-sensitive adhesive film 25b and the second pressure-sensitive adhesive film 25d can adhere quickly under slight pressure, requiring no additional adhesives or tools, simplifying the construction process.

[0045] In summary, the cable sheath assembly of this utility model can solve the problems of insufficient waterproof performance and easy damage of cable sheaths in the prior art, and can adapt to long-term outdoor exposure environment.

[0046] The above description is the preferred embodiment 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 principle of this invention, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A cable sheath assembly, characterized in that, Includes the cable body and a protective assembly for protecting the cable body; The cable body includes the cable and anchorages at both ends of the cable; The protection system includes pre-embedded pipes, protective covers, vibration dampers, waterproof covers, and outer wrapping tape wrapped around the cables, all pre-installed at the beam ends and tower ends of the cable-stayed bridge. The anchor is installed in the pre-embedded pipe, and the protective cover is installed at the bottom of the pre-embedded pipe to protect the anchor and the cable; The vibration damper is located on the top of the pre-embedded pipe and is sleeved on the cable to suppress the vibration of the cable; The waterproof cover is installed on the top of the embedded pipe and on the cable; The shock absorber includes two damping elements, each with a wedge at its end. The wedges at both ends of the damping elements are brought close together by a tensioning member to compress the damping elements to expand radially. The damping elements are made of rubber. The waterproof cover includes two sub-waterproof covers, which are connected by fasteners. A sealing rubber ring is provided between the waterproof cover and the pre-embedded pipe and cable, and a non-drying sealant is applied.

2. The cable sheath assembly according to claim 1, characterized in that, The embedded pipe is equipped with spiral ribs and anchor plates for fixing the protective cover.

3. The cable sheath assembly according to claim 2, characterized in that, The anchor plate and the embedded pipe are provided with stiffening ribs, and the spiral reinforcement is arranged around the embedded pipe; The inner wall of the protective cover is threadedly connected to the surface of the anchor, and the protective cover is bolted to the anchor plate.

4. The cable sheath assembly according to claim 1, characterized in that, The two ends of the waterproof cover are respectively wrapped around the embedded pipe and the cable.

5. The cable sheath assembly according to claim 1, characterized in that, The waterproof cover is made of polyethylene.

6. The cable sheath assembly according to claim 1, characterized in that, The outer wrapping tape is provided with a first polymer film, a first pressure-sensitive adhesive film, a second polymer film, a second pressure-sensitive adhesive film and a release film in sequence from the inside to the outside.

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