Wrapping tape protection system for bridge main cable

Abstract

The utility model relates to the technical field of bridge protection, in particular to a wrapping tape protection system for a bridge main cable. At present, a bridge main cable is easily eroded by environmental factors in long-term use, so that the structural performance is reduced. According to the technical scheme, the wrapping tape is characterized in that a wrapping tape body is provided with a plurality of long-strip-shaped filling openings distributed at specific angles, a regulation and control film is connected with the wrapping tape body through a reinforcing material layer, the regulation and control film is a reverse osmosis film and / or a moisture permeable film and is breathable and salt-resistant, and the reinforcing material layer is composed of composite fibers. The protection system is mainly used for improving the protection performance of the bridge main cable, effectively resisting the damage of the external environment to the main cable and prolonging the service life of the bridge.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge engineering field. More specifically, the utility model relates to bridge main cable with wrapping tape protection system. BACKGROUND

[0002] In the field of bridge engineering, the main cable of a suspension bridge, as the main load-bearing component, its safety and stability are crucial to the overall structure of the bridge. During long-term service, the main cable not only has to bear the constant load, alternating load and accidental load, but also is subjected to erosion of various environmental factors such as light, wind and rain, humidity, salt mist and atmospheric pollutants, which makes the main cable prone to internal and external corrosion damage.

[0003] To solve the corrosion problem of the main cable, the main cable of a newly built long-span suspension bridge is generally installed with a sealing protection system at home and abroad. The system mainly uses a main cable dehumidification system, which uses a timing or humidity monitoring method to introduce dry air into the main cable, and uses a pressure relief valve at the cable clamp to remove moisture in the main cable, so as to achieve the purpose of corrosion protection of the main cable.

[0004] The common sealing protection system mainly has the following schemes: scheme one is wrapping + vulcanized rubber sealant + high weather-resistant topcoat; scheme two is wrapping + chlorosulfonated polyethylene wrapping tape; and scheme three is wrapping + flexible coating layer. In practical application, scheme one and scheme two have been widely used in China due to their relatively good protection effect. However, scheme three is less used in actual engineering due to its relatively poor protection effect.

[0005] However, even if scheme one or scheme two is used, the existing sealing protection system still has many shortcomings. On the one hand, these traditional protection systems have certain limitations in blocking water and salt. In a long-term humid and high-salt environment, water and salt may still slowly penetrate into the main cable, which will seriously threaten the structural strength and service life of the main cable after long-term accumulation. On the other hand, the traditional protection system has poor air permeability, and the water vapor generated in the main cable due to temperature changes cannot be effectively discharged, which causes the main cable to be in a humid state for a long time, further accelerating the corrosion process of the main cable.

[0006] From the design level of the protection system, the traditional scheme mainly focuses on physical isolation, and the protection material is relatively single, which is difficult to effectively regulate and control water vapor, salt and other pollutants in complex environment. Moreover, in the design process, the gas exchange demand between the inside and outside of the main cable is not fully considered. For example, when trying to increase the thickness of the protective layer to improve the waterproof performance, it often leads to the increase of the self weight of the main cable, which further affects the stability of the overall structure of the bridge; and using ordinary waterproof material can waterproof to a certain extent, but it will further hinder the air permeability, making the water vapor accumulation in the main cable more serious. In addition, finding an effective water and salt blocking and air permeable protection material and reasonably applying it to the protection system has always been a challenging task in this field.

[0007] In summary, the existing sealing and protection system of the main cable of the suspension bridge still has a large space for improvement in the protection performance, and a more effective protection system needs to be developed to meet the growing demand for bridge safety and durability. Content of the utility model

[0008] The purpose of the utility model is to provide a wrapping tape protection system for bridge main cable, which optimizes the main structure of the wrapping tape, accurately selects and arranges the control film, effectively enhances the water discharge capacity and salt blocking capacity, ensures good air permeability, accurately regulates and controls the exchange of substances between the inside and outside of the main cable, and further improves the protection performance of the bridge main cable, prolongs the service life of the main cable, and ensures the long-term safety and stability of the bridge structure.

[0009] In order to achieve these purposes and other advantages of the utility model, a wrapping tape protection system for bridge main cable is provided, which comprises:

[0010] The wrapping tape main body is provided with at least one filling port at intervals thereon;

[0011] At least one control film is equal in number to the filling ports and corresponds to each filling port one by one, each control film is attached to the wrapping tape main body and seals the corresponding filling port, and each control film can be air permeable, salt resistant and water discharge.

[0012] Preferably, in the wrapping tape protection system for bridge main cable, each control film is attached to a layer of air permeability enhancing material on the outside, and each layer of enhancing material is attached to the wrapping tape main body and seals the corresponding control film.

[0013] Preferably, in the wrapping tape protection system for bridge main cable, the layer of enhancing material is a layer of fiber material.

[0014] Preferably, in the wrapping tape protection system for bridge main cable, the layer of fiber material is a layer of glass fiber, carbon fiber, polypropylene, acrylic, polyvinyl alcohol fiber or polyethylene fiber.

[0015] Preferably, in the bridge main cable wrapping protection system, the regulating membrane is a reverse osmosis membrane and / or a moisture-permeable membrane.

[0016] Preferably, in the bridge main cable wrapping tape protection system, the total area of ​​the filling opening accounts for 3 to 20% of the total area of ​​the wrapping tape body.

[0017] Preferably, in the bridge main cable wrapping tape protection system, the fiber material layer is adhered to the wrapping tape body by hot pressing or bonding, and the control film is adhered to the wrapping tape body by hot pressing or bonding.

[0018] Preferably, in the bridge main cable wrapping tape protection system, there are multiple filling ports, which are spaced apart along the length of the wrapping tape body. Each filling port is elongated, and the angle between its length direction and the width direction of the wrapping tape body is 30 to 60 degrees.

[0019] This utility model has at least the following beneficial effects:

[0020] This utility model discloses a bridge main cable wrapping tape protection system. By setting elongated filling openings with specific angles, distributions, and area proportions on the wrapping tape body, and combining it with a breathable, salt-blocking, and drainage regulating membrane, the system greatly enhances the protection capability of the main cable. The precisely designed filling openings provide a foundation for the effective installation and function of the regulating membrane. The regulating membrane effectively blocks harmful substances such as salt in the environment from contacting the main cable, while allowing reasonable exchange of moisture, reducing the risk of main cable corrosion caused by moisture and salt erosion, and significantly extending the service life of the main cable.

[0021] The reasonable layout and size design of the filling port in this utility model ensures the protective function without affecting the structural integrity of the wrapping tape body, and does not add excessive extra burden to the main cable. The hot-pressing or adhesive bonding method ensures that the control film is tightly bonded to the wrapping tape body, ensuring that the protective system can still function stably when the main cable is subjected to various loads and deformations, thus guaranteeing the stability and safety of the overall bridge structure.

[0022] This invention effectively improves the protective performance, reducing the need for frequent maintenance and replacement of the main cable due to corrosion. In the long run, it reduces the manpower, material and financial costs required for bridge maintenance, improves the economic efficiency of bridge operation, and provides a strong guarantee for the long-term stable operation of the bridge.

[0023] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0024] Figure 1 This is a flowchart illustrating the preparation process of a wrapping tape for a bridge main cable according to an embodiment of the present invention;

[0025] Figure 2 This is a diagram illustrating the usage of the bridge main cable wrapping tape according to an embodiment of the present invention.

[0026] The attached diagram is labeled as follows: wrapping tape main body-1; filling port-2; control membrane-3; reinforcing material layer-4; main cable-5. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0028] It should be noted that in the description of this utility model, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] This utility model provides a wrapping tape protection system for bridge main cables, including:

[0030] The main body of the wrapping tape 1 has at least one filling port 2 spaced apart on it;

[0031] At least one regulating membrane 3 is provided, which is equal in number to the number of filling ports and corresponds one-to-one. Each regulating membrane is attached to the main body of the wrapping tape and seals its corresponding filling port. Each regulating membrane is permeable to air, prevents salt, and allows water to drain. In actual use, multiple regulating membranes are often designed as needed, rather than just one.

[0032] Based on the length and circumference of the main cable 5, the customized wrapping tape is wound along the axial direction of the main cable. During the winding process, it is essential to ensure that the wrapping tape adheres tightly to the surface of the main cable, avoiding wrinkles, gaps, or other defects. The placement of the filling slots must be accurate. The filling slots should avoid previously marked stress concentration areas, or be strategically placed in sections according to the natural length of the main cable. Dedicated winding equipment or manual assistance can be used to ensure the uniformity and stability of the wrapping tape installation.

[0033] Depending on the environmental conditions of the main cable, for areas requiring special protection against salt corrosion, a control membrane is selected and attached to the filling opening of the main body of the wrapping tape. If a hot-pressing method is used, the main body of the wrapping tape and the control membrane are placed in a hot press and subjected to the set temperature (e.g., 100–130℃), pressure (e.g., 3–8 MPa), and time (e.g., 2–4 minutes) parameters to ensure a firm bond between the control membrane and the main body of the wrapping tape. If an adhesive application method is used, a high-performance adhesive is first evenly applied around the filling opening of the main body of the wrapping tape. Then, the pre-cut control membrane is precisely placed over the filling opening, and a certain pressure is applied to ensure full adhesion and a good seal, preventing gaps that would compromise air permeability and salt barrier performance. These materials ensure that they not only meet the strength requirements of the wrapping tape but also allow effective drainage of moisture from inside the main cable.

[0034] A dry air ventilation system, including an air compressor, pipes, valves, and control devices, is installed within the bridge's main cable protection system. The dry air delivery pipes are connected to the protective tape, ensuring a tight, leak-free connection. The dry air ventilation system is then commissioned, and pressure parameters and ventilation intervals are set for different operating conditions. Simultaneously, an external salt spray concentration monitoring device is installed and connected to the dry air ventilation system's control device for automated control.

[0035] During subsequent use, the protection system should be inspected regularly for damage to the control membrane, loosening of the wrapping tape, etc. Any problems should be repaired or replaced promptly. Simultaneously, based on external salt spray concentration monitoring data, the operation of the dry air ventilation system should be automatically controlled. When the external salt concentration is high, osmotic pressure should be used to ensure moisture removal without ventilation; when the external salt concentration is low, ventilation should be used to enhance internal driving force and ensure the main cable remains dry. Furthermore, the ventilation system should be regularly checked to ensure it removes salt and dust from the outside of the control membrane, achieving a "backwashing" effect to ensure the long-term stable operation of the protection system.

[0036] This invention's protective system significantly enhances the protection of the main cable by incorporating filling openings on the wrapping tape and installing regulating membranes. These membrane materials not only effectively block external salt intrusion but also regulate the moisture exchange within the main cable. In high-salt environments, osmotic pressure provides the driving force to ensure moisture expulsion; in low-salt environments, the internal driving force is strengthened through a dry air circulation system, maintaining a dry environment inside the main cable. This significantly reduces the risk of corrosion caused by moisture and salt erosion, effectively extending the cable's service life and minimizing structural safety hazards due to cable corrosion.

[0037] The rational design and installation of the wrapping tape and the regulating membrane ensures protective functionality without placing additional burden on the main cable structure. The layout of the filling openings avoids stress concentration areas or is segmented according to the natural length of the main cable, thus not affecting the structural integrity of the wrapping tape. The hot-pressing or adhesive bonding method ensures a tight bond between the membrane and the wrapping tape, guaranteeing the protective system's stable operation even under various loads (such as constant loads from vehicle traffic and alternating loads from wind-induced vibrations) and deformation of the main cable. This safeguards the overall stability and safety of the bridge structure and reduces the risk of structural deformation and collapse due to protective system failure.

[0038] Because the protective system effectively enhances the protective performance of the main cable, it reduces the frequency of maintenance and replacement required due to corrosion. The "backwashing" effect of the dry air system and its automatic adjustment function based on the environment further ensure the long-term effectiveness of the protective system. This means that throughout the bridge's entire lifespan, the manpower, material, and financial costs required for maintenance can be significantly reduced. It reduces the workload and difficulty of maintenance personnel, lowers the equipment and material costs required for maintenance, improves the economic efficiency of bridge operation, provides strong economic support for the long-term stable operation of the bridge, and also reduces the impact of bridge maintenance on traffic.

[0039] In another embodiment, in the bridge main cable wrapping tape protection system, each control membrane has a breathable reinforcing material layer 4 attached to its outer side. The reinforcing material is breathable and will not affect the breathability, salt barrier, and drainage functions of the control membrane. Each reinforcing material layer is attached to the wrapping tape body and seals the corresponding control membrane.

[0040] like Figure 1 As shown, in the installation of the bridge main cable wrapping tape protection system, the adhesion of the membrane material to the reinforcing material is carried out according to the following process:

[0041] Unfold the main body of the wrapping tape and fix it to the operating table with the fixing device.

[0042] Align the cutting die with the area to be cut, start the cutting equipment and cut smoothly to form a filling opening.

[0043] Select a membrane material that is larger than the filling inlet and possesses good air permeability, salt barrier properties, drainage capabilities, and mechanical strength. Before operation, wipe the surface of the membrane material with a lint-free cloth dampened with detergent to remove dust, oil, and other impurities. Place the membrane material precisely on the filling surface, ensuring edge alignment and eliminating wrinkles and air bubbles. Temporarily secure it with high-precision clamps to prevent damage to the membrane material.

[0044] After the membrane material is fixed, a reinforcing material that is longer than the membrane material in both the transverse and longitudinal directions is covered on the membrane material and part of the original wrapping tape. The reinforcing material is then hot-pressed or applied to the wrapping tape, and the membrane material is hot-pressed or applied to the wrapping tape.

[0045] This utility model's protective system enhances the protection of the main cable by creating a filling port on the wrapping tape, sealing the port with a regulating membrane, and attaching a reinforcing material to the regulating membrane to strengthen its mechanical properties. The reinforcing material layer further strengthens the connection between the regulating membrane and the wrapping tape, making the protective structure more robust. These membrane-reinforcing material composites not only effectively block the intrusion of external salt but also rationally regulate the water vapor exchange inside the main cable. In high-salt environments, osmotic pressure provides the driving force to ensure water expulsion; in low-salt environments, the internal driving force is strengthened through a dry air circulation system, maintaining a dry environment inside the main cable. This significantly reduces the risk of corrosion caused by moisture and salt erosion, effectively extending the service life of the main cable and reducing potential safety hazards to the bridge structure due to main cable corrosion.

[0046] In another embodiment, in the bridge main cable wrapping tape protection system, the reinforcing material layer is a fiber material layer, which can be inorganic fiber or organic fiber, preferably inorganic fiber.

[0047] In another embodiment, in the bridge main cable wrapping tape protection system, the fiber material layer is glass fiber, carbon fiber, polypropylene, acrylic fiber, polyvinyl alcohol fiber, or polyethylene fiber layer.

[0048] In another embodiment, in the bridge main cable wrapping protection system, the regulating membrane is a reverse osmosis membrane and / or a moisture-permeable membrane.

[0049] In another embodiment, in the bridge main cable wrapping tape protection system, the total area of ​​the filling opening accounts for 3 to 20% of the total area of ​​the wrapping tape body.

[0050] The total area of ​​the filling ports should be controlled within the range of 3% to 20% of the total area of ​​the wrapping tape. If the proportion is less than 3%, the number of control membranes is relatively small, which will make it difficult to guarantee the exchange performance of water vapor and gas between the inside and outside environment of the main cable, and the protective system cannot effectively regulate the internal environment of the main cable. On the other hand, if the total area of ​​the filling ports exceeds 20%, the number of control membranes is too large. Although the exchange performance may be improved to some extent, it will significantly increase the material cost and installation difficulty, making the economic efficiency of the protective system too low and not in line with the cost-effectiveness principle in practical engineering applications.

[0051] In another embodiment, in the bridge main cable wrapping tape protection system, the fiber material layer is adhered to the wrapping tape body by hot pressing or bonding, and the control film is adhered to the wrapping tape body by hot pressing or bonding.

[0052] In another embodiment, the bridge main cable wrapping tape protection system has multiple filling ports, which are spaced apart along the length of the wrapping tape body. Each filling port is elongated, and the angle between its length direction and the width direction of the wrapping tape body is 30 to 60 degrees.

[0053] Multiple elongated filling ports are spaced apart along the length of the wrapping tape body, with the length direction forming a 30-60 degree angle with the width direction of the wrapping tape body. This increases the contact area between the control membrane and the main cable surface. Within the limited area of ​​the wrapping tape, the arrangement of more filling ports means that the control membrane can more comprehensively cover the critical parts of the main cable, improving the protection range of the main cable. The elongated design at a specific angle allows the control membrane to function in different directions while ensuring the structural strength of the wrapping tape, effectively blocking external salt from corroding the main cable from all angles, greatly improving the overall protective performance of the protection system for the main cable.

[0054] The elongated filling openings provide a larger gas exchange channel for the control membrane. Due to the specific angle between the filling openings and the width of the wrapping tape, gas exchange between the inside of the main cable and the external environment is smoother, forming a unique airflow channel. When moisture is generated inside the main cable, it can be discharged more efficiently through these angled filling openings, maintaining a dry environment inside the main cable, effectively preventing corrosion caused by moisture accumulation, and ensuring the structural stability of the main cable.

[0055] The multiple, spaced-apart filling ports allow the protective system to flexibly adjust the distribution of the control membrane according to the actual environmental requirements of different parts of the main cable. In areas with high corrosion risk, the density of filling ports can be appropriately increased to enhance the protective effect; in areas with relatively good environmental conditions, the number of filling ports can be appropriately reduced to lower costs. Simultaneously, the elongated filling ports with a specific angle can adapt to the deformation of the main cable under different environmental conditions, ensuring that the control membrane always adheres tightly to the main cable, exerting a good protective effect and enhancing the adaptability of the protective system to complex environments.

[0056] The elongated, angled filler opening design optimizes material usage while ensuring protective and exchange performance. Compared to large or irregular filler openings, this design reduces unnecessary material waste, lowers material costs and installation difficulty, improves the cost-effectiveness of the protection system, and ensures the structural stability of the wrapping tape during long-term use.

[0057] This invention selects a suitable wrapping tape material based on the actual dimensions and protection requirements of the bridge's main cable, such as rubber or plastic with good flexibility and a certain strength. The width and length of the wrapping tape are determined to ensure it completely covers the main cable.

[0058] Using high-precision cutting equipment, long strip-shaped filling openings are cut at intervals along the length of the main wrapping tape, strictly following design requirements. By precisely controlling the angle of the cutting blade, the angle between the length direction of each filling opening and the width direction of the main wrapping tape is ensured to be between 30 and 60 degrees. For example, the angle can be set to 45 degrees to ensure the consistency and accuracy of the filling openings. The spacing of the filling openings is rationally planned according to the corrosion risk level of different parts of the main cable. For critical areas susceptible to corrosion, the spacing of the filling openings is appropriately reduced to increase the coverage area of ​​the control membrane. During the cutting process, the cutting quality must be strictly controlled to ensure that the edges of the filling openings are neat and smooth, avoiding uneven edges that could affect the adhesion of the control membrane.

[0059] Select a suitable control membrane based on the actual environmental conditions of the main cable. A permeable membrane is preferred; however, if the salt spray concentration around the main cable is too high, a reverse osmosis membrane can be used.

[0060] Cut the control film to a size that matches the filling opening, ensuring dimensional accuracy to guarantee a tight seal. Attach the control film to the wrapping tape body using hot pressing or lamination. For hot pressing, place the wrapping tape body and control film in a hot press, precisely setting the temperature, pressure, and time parameters. Generally, the temperature is controlled at 100–130℃, the pressure at 3–8 MPa, and the time at 2–4 minutes to ensure a strong bond between the control film and the wrapping tape body. For lamination, use a high-performance adhesive, applying it evenly to the bonding surfaces of the wrapping tape body and control film. Then, firmly adhere the two together, applying pressure to ensure complete adhesion. When applying the adhesive, ensure even application to avoid missed areas or adhesive buildup.

[0061] In constructing the entire protective system, the use of fiber materials should be increased. High-strength, high-toughness fiber materials, such as glass fiber and carbon fiber, should be selected. During the hot-pressing or bonding operation of the control membrane and the wrapping tape, the fiber material should be simultaneously laid on the control membrane and the wrapping tape. The fiber material should be longer than the control membrane in both the transverse and longitudinal dimensions to ensure effective connection between a portion of the fiber and the original wrapping tape. During hot pressing, based on the characteristics of the fiber material, a firm bond should be achieved between the fiber and the wrapping tape and control membrane under conditions of 120–150℃, 5–10 MPa, and 3–5 minutes. If bonding is used, a suitable adhesive should be selected and evenly applied to the contact surfaces of the fiber, the wrapping tape, and the control membrane to ensure stable fiber adhesion.

[0062] Throughout the installation of the entire protective system, rigorous quality inspections are conducted at every step to ensure secure connections between components and that the system's performance meets design requirements. For example, airtightness testing verifies the sealing effect between the control membrane and the wrapping tape, tensile testing checks their bonding strength, and additional tensile and shear strength tests are performed on the connections between fiber materials and other components to ensure a stable bond between the fibers and the overall structure.

[0063] This invention focuses on constructing an efficient protective system for bridge main cables using wrapping tape. First, based on the actual dimensions of the main cable and protection requirements, a rubber or plastic material with good flexibility and strength is selected as the main body of the wrapping tape, and its width and length are determined to ensure complete wrapping of the main cable. Using high-precision cutting equipment, elongated filling slots are cut at intervals along the length of the wrapping tape main body. The angle of the cutting tool is precisely controlled to maintain the angle between the length direction of the filling slot and the width direction of the wrapping tape main body at 30–60 degrees. For example, a 45-degree angle is set to ensure consistency and accuracy. Simultaneously, the spacing between the filling slots is rationally planned according to the corrosion risk level of different parts of the main cable.

[0064] When selecting a control membrane, a moisture-permeable membrane, such as a PTFE moisture-permeable membrane (PTFE air filter membrane), is preferred. If the salt spray concentration around the main cable is too high, a reverse osmosis membrane can be used. The membrane should be cut to the size that matches the filling port and attached to the wrapping tape body by hot pressing (100-130℃, 3-8MPa, 2-4 minutes) or by applying (using high-performance adhesive and spreading it evenly).

[0065] Specifically, fiber materials, such as glass fiber and carbon fiber, are added to the protective system. During hot pressing (120-150℃, 5-10MPa, 3-5 minutes) or application, the fiber material is laid on the control film and the wrapping tape body, and the transverse and longitudinal dimensions of the fiber material are longer than the control film to ensure effective connection with the original wrapping tape body.

[0066] Throughout the installation process, each step undergoes rigorous quality testing. The airtightness test verifies the sealing effect of the control membrane and the wrapping tape, the tensile test verifies the bonding strength between the two, and the tensile and shear strength tests are performed on the connection between the fiber material and other components.

[0067] This protection system has many advantages:

[0068] Optimized protective performance: Multiple elongated filling ports are spaced apart along the length of the wrapping tape, forming an angle of 30-60 degrees with the width of the wrapping tape. This increases the contact area between the control membrane and the main cable surface. Within the limited area of ​​the wrapping tape, more filling ports mean the control membrane can more comprehensively cover critical parts of the main cable, improving the protection range. The elongated design at a specific angle allows the control membrane to function in different directions while ensuring the structural strength of the wrapping tape, effectively blocking external salt from corroding the main cable from all angles. The addition of fiber materials further enhances the strength, toughness, and weather resistance of the overall protective structure, effectively resisting possible external mechanical damage and greatly improving the overall protective performance of the protection system for the main cable.

[0069] Enhanced gas exchange efficiency: The elongated filling openings provide a larger gas exchange channel for the control membrane. Due to the specific angle between the filling openings and the width of the wrapping tape, gas exchange between the inside and outside of the main cable is smoother, forming a unique airflow channel. When moisture is generated inside the main cable, it can be more efficiently discharged through these angled filling openings, maintaining a dry environment inside the main cable, effectively preventing corrosion caused by moisture accumulation, and ensuring the structural stability of the main cable. The presence of the fiber material does not hinder gas exchange; on the contrary, due to its excellent physical properties, it helps to a certain extent to promote the uniform distribution of airflow, further improving gas exchange efficiency.

[0070] Enhanced environmental adaptability: Multiple filler ports spaced at intervals allow the protective system to flexibly adjust the distribution of the control membrane according to the actual environmental requirements of different parts of the main cable. In areas with high corrosion risk, the density of filler ports can be appropriately increased to enhance the protective effect; in areas with relatively good environmental conditions, the number of filler ports can be appropriately reduced to lower costs. Simultaneously, the elongated filler ports with specific angles can adapt to the deformation of the main cable under different environmental conditions, ensuring that the control membrane always adheres tightly to the main cable and exerts a good protective effect. The high flexibility and high strength of the fiber material enable the protective system to maintain structural integrity and protective performance even when faced with tensile and bending deformations of the main cable caused by environmental changes, enhancing the adaptability of the protective system to complex environments.

[0071] Ensuring economic efficiency and structural stability: The total area of ​​the filling ports is controlled within 3-20% of the total area of ​​the wrapping tape itself. This ensures sufficient space for the control membrane to function effectively without weakening the structural strength of the wrapping tape due to excessive filling ports. The elongated, angled filling port design optimizes material usage while maintaining protective and exchange performance. Compared to large-area or irregular filling port designs, this design reduces unnecessary material waste, lowers material costs and installation difficulty, and improves the economic efficiency of the protection system. Although the use of fiber materials increases costs to some extent, its significant improvement in the durability and reliability of the protection system reduces, in the long term, the maintenance and replacement costs of the main cable due to protection failure, while ensuring the structural stability of the wrapping tape during long-term use.

[0072] Reduced Energy Consumption: The membrane-fiber composite material used in the protection system has unique advantages, possessing its own internal drainage driving force. This characteristic reduces reliance on dry air preparation and ventilation systems during the drainage of moisture from the main cable. In traditional protection systems, to ensure the main cable remains dry, dry air preparation equipment and ventilation systems need to be frequently turned on, consuming a large amount of energy. However, the membrane-fiber composite material, with its special structure and properties, such as its microporous structure and unique molecular forces, can actively promote moisture drainage under conditions of humidity differences. This reduces the frequency and duration of start-up and shutdown of dry air preparation and ventilation systems, significantly reducing energy consumption, improving the overall energy efficiency of the protection system, and lowering long-term operating costs.

[0073] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A wrapping tape protection system for a bridge main cable, characterized in that, The application relates to a wrapping belt, which comprises: a wrapping belt body, at least one filling opening being arranged on the wrapping belt body in intervals; at least one control film, the number of the control films being equal to that of the filling openings, each control film being attached to the wrapping belt body and sealing the corresponding filling opening, and each control film being capable of allowing air to pass through, preventing salt from passing through and discharging water.

2. The bridge main cable wrapping tape protection system of claim 1, wherein, Each control film is attached to a layer of air permeability enhancing material on the outside, and each layer of the enhancing material is attached to the wrapping belt body and seals the corresponding control film.

3. A bridge main cable wrapping tape protection system as claimed in claim 2, characterized in that, The layer of the enhancing material is a layer of fiber material.

4. The bridge main cable wrapping tape protection system of claim 3, wherein, The layer of the fiber material is a layer of glass fiber, carbon fiber, polypropylene fiber, acrylic fiber, polyvinyl alcohol fiber or polyethylene fiber.

5. The bridge main cable wrapping tape protection system of claim 1, wherein, The control film is a reverse osmosis membrane and / or a moisture permeable membrane.

6. The bridge main cable wrapping tape protection system of claim 1, wherein, The total area of the filling openings accounts for 3-20% of the total area of the wrapping belt body.

7. The bridge main cable wrapping tape protection system of claim 3, wherein, The layer of the fiber material is attached to the wrapping belt body by hot pressing or pasting, and the control film is attached to the wrapping belt body by hot pressing or pasting.

8. The bridge main cable wrapping tape protection system of claim 1, wherein, The filling openings are multiple, and the multiple filling openings are arranged in intervals along the length direction of the wrapping belt body, each filling opening is long strip-shaped, and the included angle between the length direction of each filling opening and the width direction of the wrapping belt body is 30-60 degrees.

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