Stay cable protective cover

Abstract

The utility model discloses a stay cable protective cover, and belongs to the technical field of bridge protection. According to the stay cable protective cover provided by the utility model, through the combination of the military cap and the special hoop component, the problem that cracks occur at the joints of the military cap, the reserved steel sleeve and the cable body due to vibration is solved, a lasting anti-corrosion effect is achieved, and the durability of the stay cable and the safety of a bridge structure are ensured. According to the stay cable protective cover provided by the utility model, the military cap and the special hoop component are made of non-corrosive materials, so that the cable body, rainwater and snow can be better isolated, and the durability of the stay cable and the safety of a bridge structure are ensured.

Description

Technical Field

[0001] The utility model relates to a stay cable protection cover, belonging to the technical field of bridge protection. Background Art

[0002] Stay cables are the main load-bearing and force-transferring structural components of cable-stayed bridges, and their structural durability directly affects the safety and durability of cable-stayed bridges. The main factors affecting the structural durability of stay cables are the corrosion and fatigue of stay cables. The main way of stay cable corrosion is electrochemical corrosion, and water is a necessary condition for forming an electrolyte solution. Therefore, how to prevent water becomes the key to the anti-corrosion problem.

[0003] The anti-corrosion scope of stay cables includes the cable body, the anchor head, the joint part of the cable body and the anchor head, and the cable-stayed bridge tower, the beam-end anchorage area, etc. For the waterproof problem of the beam-end anchorage area of stay cables, domestic generally adopts the form of installing a "general's cap" and filling it with sealant or other foaming materials. The general's cap is made of cast iron parts or stainless steel thin plates by rolling and welding. One end is connected to the reserved steel sleeve at the beam end of the stay cable, and the other end is connected to the stay cable body.

[0004] Since the reserved steel sleeve at the beam end of the stay cable and the stay cable body cannot actually reach the ideal concentric state, during the installation of the general's cap, it is impossible to ensure the tight connection between the general's cap and the reserved steel sleeve and the two circular surfaces with different outer diameters of the cable body, so there will be gaps. Due to the vibration of the stay cable caused by external loads such as vehicles and wind, and natural erosion such as ultraviolet rays and rain, the silicone rubber sealing strip and sealant filled in the original gap will become loose and aged, and cannot play a lasting waterproof effect, seriously affecting the durability of the stay cable and the safety of the bridge structure. Content of the Utility Model

[0005] In order to solve the above problems, the utility model provides a stay cable protection cover, and the technical solution is as follows.

[0006] The stay cable protection cover of the utility model includes a general's cap and a special hoop member; wherein, the general's cap is a hollow cylindrical structure with a smaller upper part and a larger lower part. The general's cap includes a lower barrel opening and an upper barrel opening, and a lower open ring opening and an upper open ring opening are respectively arranged at the positions of the lower barrel opening and the upper barrel opening; the outer wall surface of the general's cap is divided into two upper and lower sections, the upper section is a conical section, and the lower section is a cylindrical section; the special hoop member includes an upper buckle and a lower buckle, and the main body of the special hoop member is a ring structure; the special hoop member and the general's cap are connected together through the upper buckle and the lower buckle, so that the stay cable protection cover is reinforced on the stay cable body. The special hoop member is installed on the upper section of the general's cap and below the upper open ring opening; wherein the general's cap is connected to the reserved steel sleeve at the beam end of the stay cable through the lower open ring opening, and the general's cap is connected to the stay cable body through the upper open ring opening.

[0007] In an embodiment, the connection method of the upper buckle and the lower buckle is high-strength bolt connection.

[0008] In one embodiment, the general's cap adopts a stainless steel structure and is welded on-site with two petals to reduce the stiffness of the main body of the stay cable protective cover, so as to adapt to the vibration and deformation of the cable body.

[0009] In one embodiment, waterproof sealant is applied at the joints of the general's cap, the special hoop member and the stay cable body.

[0010] In one embodiment, the special hoop member is made of a material with good corrosion resistance and high mechanical strength. Optionally, the material is one of carbon steel, stainless steel and aluminum alloy.

[0011] Advantages of the present utility model:

[0012] The stay cable protective cover provided by the present utility model, through the combination of the general's cap and the special hoop member, solves the problem of cracks occurring at the joints of the general's cap with the reserved steel casing and the cable body due to vibration, achieves a long-lasting anti-corrosion effect, and ensures the durability of the stay cable and the safety of the bridge structure.

[0013] The stay cable protective cover provided by the present utility model, the materials of the general's cap and the special hoop member adopted are corrosion-resistant materials, which can better isolate the cable body from rain and snow, and ensure the durability of the stay cable and the safety of the bridge structure. Description of the drawings

[0014] Figure 1 It is a three-dimensional structural schematic diagram of a stay cable protective cover;

[0015] Figure 2 It is a front schematic diagram of a stay cable protective cover.

[0016] Description of the reference numerals: Wherein 1 is the general's cap, 2 is the special hoop member, 11 is the lower barrel opening, 12 is the upper barrel opening, 13 is the lower open-loop opening, 14 is the upper open-loop opening, 15 is the lower buckle, and 16 is the upper buckle. Detailed implementation manners

[0017] The following is a detailed description of the present utility model.

[0018] Embodiment 1

[0019] As Figure 1 , Figure 2 shown, it is a structural schematic diagram of a stay cable protective cover of the present utility model;

[0020] The stay cable protective cover includes a general's cap 1 and a special hoop member 2; the general's cap 1 includes a lower barrel opening 11 and an upper barrel opening 12, and a lower open ring opening 13 and an upper open ring opening 14 are respectively arranged at the positions of the lower barrel opening 11 and the upper barrel opening 12; the outer wall surface of the general's cap 1 is divided into upper and lower sections, the upper section is a conical section, and the lower section is a cylindrical section; the special hoop member 2 includes an upper buckle 15 and a lower buckle 16, and the main body of the special hoop member 2 is a ring structure; the special hoop member 2 and the general's cap 1 are connected together through the upper buckle 15 and the lower buckle 16 so that the stay cable protective cover is reinforced on the stay cable body, and the special hoop member 2 is installed on the upper section of the general's cap 1 and below the upper open ring opening 14; among them, the general's cap 1 is connected to the reserved steel sleeve at the beam end of the stay cable through the lower open ring opening 13, and the general's cap 1 is connected to the stay cable body through the upper open ring opening 14.

[0021] The outer wall surface of the general's cap 1 is divided into upper and lower sections, the upper section is conical, and the lower section is a cylindrical section.

[0022] The general's cap 1 is made of stainless steel structure and is welded on site in two halves to reduce the stiffness of the stay cable protective cover body to adapt to the vibration and deformation of the cable body.

[0023] Apply waterproof sealant at the joints of the general's cap 1, the special hoop member 2 and the stay cable body.

[0024] The connection method of the upper buckle 15 and the lower buckle 16 is high-strength bolt connection.

[0025] The special hoop member 2 is made of a material with good corrosion resistance and high mechanical strength. Optionally, the material is one of carbon steel, stainless steel and aluminum alloy.

[0026] Installation process:

[0027] The installation process of a stay cable protective cover of the present utility model:

[0028] Step 1:

[0029] Weld the general's cap 1 on site in two halves to reduce the stiffness of the stay cable protective cover body, and weld the lower open ring opening 13 on the reserved steel sleeve at the beam end of the stay cable.

[0030] Step 2:

[0031] Connect the stay cable body to the general's cap 1 through the upper open ring opening 14, and apply waterproof sealant at the joint.

[0032] Step 3:

[0033] Reinforce the general's cap 1 on the stay cable body by using the special hoop member 2 through the upper buckle 15 and the lower buckle 16.

[0034] Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person familiar with this technology can make various modifications and alterations without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be defined by the claims.

Claims

1. A stay cable protective cover, characterized in that: The inclined cable protective cover comprises a general cap (1) and a special hoop component (2); wherein the general cap (1) is a hollow cylindrical structure with a small upper part and a large lower part, and the general cap (1) comprises a lower cylinder opening (11) and an upper cylinder opening (12), and a lower open ring opening (13) and an upper open ring opening (14) are respectively arranged at the positions of the lower cylinder opening (11) and the upper cylinder opening (12); the outer wall surface of the general cap (1) is divided into upper and lower sections, the upper section is a conical section, and the lower section is a circular section. The column section; the special hoop component (2) comprises an upper buckle (15) and a lower buckle (16), wherein the main body of the special hoop component (2) is an annular structure; the special hoop component (2) and the general cap (1) are connected together by the upper buckle (15) and the lower buckle (16) so that the inclined cable protective cover is reinforced on the inclined cable body, and the special hoop component (2) is installed on the upper section of the general cap (1) and below the upper open ring (14).

2. A stay cable protective cover according to claim 1, characterized in that: The general cap (1) is connected to the steel sleeve reserved at the end of the inclined cable beam through a lower open loop (13), and the general cap is connected to the inclined cable body through an upper open loop (14).

3. The stay cable protective cover according to claim 1, characterized in that: The general cap (1) is made of stainless steel and has two flaps welded on site, which reduces the rigidity of the main body of the inclined cable protective cover to adapt to the vibration and deformation of the cable body.

4. The stay cable protective cover according to claim 1, characterized in that: Waterproof sealant is applied to the connection between the general cap (1), the special hoop component (2) and the inclined cable body.

5. The stay cable protective cover according to claim 1, characterized in that: The upper buckle (15) and the lower buckle (16) are connected by high-strength bolts.

6. The stay cable protective cover according to claim 1, characterized in that: The special hoop component (2) is made of a material with good corrosion resistance and high mechanical strength.

7. A stay cable protective cover according to claim 6, characterized in that: The material is one of carbon steel, stainless steel and aluminum alloy.

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