Method for erecting continuous type suspension bridge main cable reference strand with anti-sliding shear keys

Abstract

The invention relates to the technical field of suspension bridge main cables, in particular to a method for erecting a continuous type suspension bridge main cable reference strand with an anti-sliding shear key, the reference strand is made of full-high-precision standard wires, and a continuous full-length type cable manufacturing mode is adopted. Comprising the following steps that S1, starting point mark points and terminal point mark points of all standard wires of a reference cable strand are aligned; s2, shear keys are fixedly installed at the span points of the reference cable strand, and the shear keys are matched with reserved notches of the cable saddle; s3, temporary fixing is conducted on the base line length marking position of the reference cable strand, and the reference cable strand is wound with a wrapping tape; and S4, temporary fixation is removed, the steel wires in the strands freely slide, and after the cable strands are stressed, the standard cable strands are erected with the average length naturally formed after standard wire length self-adaption as the length of the standard cable strands. According to the erecting method, the intra-strand error is effectively reduced, high-precision erecting can be achieved only by aligning the shear keys with the notches on site, sag adjustment is not needed, and the construction efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of suspension bridge main cable technology, and in particular to a method for erecting the reference strand of a continuous suspension bridge main cable with anti-slip shear keys. Background Technology

[0002] The main cables of suspension bridges generally adopt a prefabricated parallel wire strand (PWS) structure, and its length accuracy has a decisive influence on the forming quality of the main cable and the structural stress performance. According to the "Technical Conditions for Prefabricated Main Cable Strands of Suspension Bridges" (JT / T 395-1999), the length accuracy of prefabricated parallel wire strands for suspension bridges must be greater than 1 / 12000, and the length accuracy of standard wires must be greater than / 15000. Currently, standard wires are typically produced using the baseline method or magnetization length measurement method, with a maximum measurement accuracy of 1 / 100000. However, in the actual stranding process, two key issues still arise:

[0003] First, intra-strand errors are difficult to avoid. Due to the discreteness of wire diameter, uneven stress distribution, and uncontrollable wire drumming process, even if all standard wires are of acceptable precision, there will still be significant intra-strand errors after the strand is completed. For example, in 2019, Jin Fang (Jin Fang, Zhang Hailiang, Gu Qinghua, et al. Precision control and verification of strand length of main cable of 1960 MPa suspension bridge [J]. Metal Products, 2019, 45(01):16-25.) placed a standard wire at each of the six corners of the strand and measured the limit deviation of the marked points of the six standard wires. During the strand preparation process, the maximum relative deviation of the 3070m long strand at each standard wire mark was 175mm, and the relative length accuracy was 1 / 17543. This error is the intra-strand error of the strand.

[0004] Currently, the length accuracy of prefabricated parallel wire strands for suspension bridges, both domestically and internationally, is mainly controlled by standard wires. The accuracy requirement for standard wires is generally 1 / 15000, and the length accuracy of strands is 1 / 12000. However, the error within a strand is the stress elongation value of 1.0% of the tensile strength of the steel wire. This factor has a significant impact on the accuracy of the strands. According to the previous manufacturing process, strands need to be made with a very long anchoring tie rod adjustment range, which will increase construction errors and risks.

[0005] Secondly, the accuracy of the on-site erection of the reference cable strands is difficult to guarantee. Currently, the "absolute sag method" is still widely used for erecting reference cable strands. This method utilizes the one-to-one correspondence between the sag and length of the cable strands, measuring the sag at the midpoint to indirectly control the length of the cable strands. However, sag measurement is extremely sensitive to weather conditions (temperature, wind speed, humidity, etc.), and is time-consuming and labor-intensive, usually requiring multiple people to work together, including nighttime operations, with an erection period of 7 to 30 days. In case of severe weather, work may even be suspended, seriously affecting the construction progress and quality.

[0006] Current research on high-precision erection schemes for reference cable strands mainly focuses on the method of marking and aligning the main cable strands with multi-standard wires using a span-type high-precision marking cable strand method. The disadvantages are: firstly, during span-type manufacturing, the cable strand anchor head needs to be injected and cut multiple times, which increases the manufacturing error of the cable strand; secondly, at the cable saddle anchorage, the cable strand is shaped from a hexagon to a rectangle, resulting in a large change in the shape of the cable strand, which further reduces the accuracy of the reference cable strand erection and increases the construction difficulty.

[0007] For existing methods of erecting reference strands, please refer to Chinese invention patents with publication numbers CN114657878B and CN110878523A, which disclose a suspension bridge main cable with high-precision marked strands in a span-type manner and a suspension bridge main cable strand marking alignment erection method based on multiple standard wires. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of existing methods for erecting reference strands of main cables for suspension bridges, where intra-strand errors have a significant impact on strand accuracy and the erection efficiency of reference strands is low. This invention provides a method for erecting reference strands of main cables for suspension bridges with anti-slip shear keys.

[0009] In a first aspect, the present invention provides a method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys. The reference strand is made of high-precision standard wire and is manufactured using a continuous, full-length cable-making method, comprising the following steps: S1: Align the start and end marks of all standard wires in the reference strand; S2: Shear keys are fixedly installed at each span point of the reference cable strand. The shear keys are matched with the reserved slots of the cable saddle. The shear keys are used to limit the slippage between the reference cable strand and the cable saddle. S3: Temporarily fix the reference cable strand at the baseline length mark position and wrap the reference cable strand with wrapping tape; S4: Remove the temporary fixation to allow the steel wires inside the strand to slide freely. When the strand is under stress, use the average length that naturally forms after the standard wire length adapts as the length of the reference strand, and then set up the reference strand.

[0010] The present invention provides a method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys. Unlike the traditional segmented manufacturing method which requires multiple anchor head injection and cutting, which may introduce errors, this method adopts a continuous through-length cable making method, which completes the strand making in one go, avoiding the cumulative errors caused by multiple anchoring operations and improving the overall manufacturing accuracy of the strand. The reference strands are made using high-precision standard wires, and the continuous, full-length cable-making method allows all wires to be cross-checked during the manufacturing process. The final strand length accuracy is the combined accuracy of all ultra-high-precision standard wires, far exceeding the 1 / 12000 requirement in the "Technical Conditions for Precast Main Cable Strands of Suspension Bridges" (JT / T 395-1999). This significantly improves the forming quality and structural stress performance of the main cable. After the reference strands are transported to the site, only the span marking points need to be aligned with the span marking points on the saddle. High-precision erection can be achieved without complex sag adjustments. Manufactured using high-precision standard wires and combined with a continuous, full-length cable-making process, it eliminates strand errors caused by uneven internal forces of the steel wires during cable braiding, coiling, and erection. When the strands are under stress, the steel wires can slide freely, automatically eliminating wire bulging. The strand length is based on the average length naturally formed after the high-precision standard wires adapt, greatly reducing random and gross errors and eliminating non-uniform strand errors caused by cable braiding. Unlike traditional cable strands that use red and blue paint to mark the boundary points of each span, this cable strand uses anti-slip shear keys to mark the boundary points of each span. The shear keys fit into the pre-reserved slots set during the manufacturing of each cable saddle, which not only provides precise positioning but also prevents cable strand slippage that may occur during construction.

[0011] Preferably, the reference strand is made of 19 high-precision standard wires.

[0012] The reference strands are made using 19-wire high-precision standard wires. By reducing the strand size, the influence of standard wire weaving errors on strand length accuracy is reduced, thereby improving the accuracy of strand making while controlling the manufacturing cost of strands to the greatest extent.

[0013] Preferably, the reference strand is made of 37 high-precision standard wire.

[0014] The use of 37-wire high-precision standard wire achieves a balance between strength and precision, making it suitable for suspension bridge projects with different spans and load requirements, thus improving the adaptability and flexibility of the technology.

[0015] Preferably, in S1, a drawing and drumming process is used to align the start and end marks of all standard wires in the reference strand.

[0016] By using the drawing and drumming process to align the starting and ending points of the standard wires, the length and tension of each standard wire can be precisely controlled, ensuring that they reach a highly consistent state before braiding. This allows the standard wires to maintain a uniform stress state during the braiding process, thereby reducing the error within the strand caused by uneven stress.

[0017] Preferably, in S3, temporary fixing is performed at the marked positions every 700±10 meters of baseline length of the reference cable strand.

[0018] The reference strand is a crucial reference standard for the alignment and tensioning of the main cable system. Slippage of the wires within the strand can cause deviations in the strand's geometry and tension from design requirements, thus affecting the bridge's structural integrity and load-bearing capacity. Temporary fixing at the baseline length markings effectively prevents wire slippage within the strand, ensuring the accuracy and stability of the reference strand.

[0019] Preferably, in S3, a torpedo clamp is used for temporary fixation at the baseline length mark position of the reference cable strand.

[0020] Torpedo clips are preferred for temporary fixation, as they provide extremely strong clamping force and ensure that the wire rope will not slip under high tension.

[0021] Preferably, in S3, the spacing between adjacent wrapping tapes is 1.5 ± 0.2 meters.

[0022] The wrapping tape is wound at intervals of 1.5 ± 0.2 meters, which can firmly restrain the reference strands and prevent them from deforming or shifting due to changes in tension, wind, or temperature during construction, ensuring that the strands do not loosen. This shaping effect ensures that the strands maintain the geometric shape required by the design, providing a guarantee for the overall accuracy of the main cable and the structural stability of the suspension bridge.

[0023] Preferably, in S3, each wrapping tape is wrapped in no less than six layers.

[0024] The wrapping tape is preferably wrapped in at least six layers, which further improves the shaping effect of the wrapping tape.

[0025] Preferably, in S3, the wrapping method for each wrapping tape is as follows: first, wrap the non-adhesive side of the wrapping tape around twice, then fold the wrapping tape over and wrap it around four times.

[0026] First, wrap the unbonded backing around the strand twice to smoothly conform to the surface of the strand, ensuring that the steel wires inside the strand can slide freely. When the strand is under stress, the steel wires will slide, and the bulging of the wires will be automatically eliminated. Therefore, the length of the strand is the average length naturally formed after the high-precision standard wire length is adaptive, which greatly reduces random errors and gross errors, and eliminates non-uniform errors inside the strand caused by braiding.

[0027] Preferably, in S4, a separate cable groove is used to erect the reference cable strand on the outside.

[0028] By using a separate cable slot placed on the outside, the traditional reference cable, which is located at the bottom, can avoid the loss of reference function due to the collapse of the cable strands during later installation. It can provide a reliable reference throughout the entire cable erection process. In addition, because it is located on the outside, it has good visibility and can be easily automated and intelligently tested and upgraded.

[0029] The outer individual cable groove is a rectangular cable groove. The high-precision reference cable strand changes from a hexagonal shape in general locations to a rectangle at the main cable saddle and the branch cable saddle. The shape change is small, and the cable strand is easy to shape. Compared with the previous split-span high-precision reference cable strand, the construction difficulty of changing from a hexagonal shape to a rectangle is greatly reduced.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention provides a method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys. Unlike the traditional segmented manufacturing method that requires multiple anchor head injection and cutting, which may introduce errors, this method adopts a continuous through-length cable manufacturing method, which completes the strand manufacturing in one go, avoiding the cumulative errors caused by multiple anchoring operations and improving the overall manufacturing accuracy of the strand. 2. This invention provides a method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys. The reference strand is made using high-precision standard wires, and the continuous, full-length cable-making method allows all wires to be cross-checked during the manufacturing process. The final strand length accuracy is the combined accuracy of all ultra-high-precision standard wires, reaching more than 1 / 50000, far exceeding the requirement of 1 / 12000 in the "Technical Conditions for Prefabricated Main Cable Strands of Suspension Bridges" (JT / T 395-1999). This significantly improves the forming quality and structural stress performance of the main cable. After the reference strand is transported to the site, it is only necessary to align the span markings with the span markings on the saddle, without the need for complex sag adjustments to achieve high-precision erection. 3. This invention provides a method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys. It utilizes high-precision standard wires and a continuous, full-length cable-making process, eliminating strand errors caused by uneven internal forces in the steel wires during cable braiding, coiling, and erection. When the strand is under stress, the steel wires can slide freely, automatically eliminating wire bulging. The strand length is based on the average length naturally formed after the high-precision standard wires adapt, greatly reducing random and gross errors and eliminating non-uniform strand errors caused by cable braiding. 4. This invention provides a method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys. Unlike the traditional method of marking the boundary points of each span of the strand with red and blue paint, this method uses anti-slip shear keys to mark the boundary points of each span of the strand. The shear keys fit into the reserved slots set during the manufacturing of each cable saddle, which can accurately position the strand and prevent it from slipping during construction. Attached Figure Description

[0031] Figure 1 This is a schematic diagram showing the installation position of the reference cable strand at the cable saddle. Figure 2 This is a detailed drawing of the shear key section of the reference cable. Figure 3 This is a schematic diagram of the shear key at the saddle of the main cable of the reference cable strand; Figure 4 This is a schematic diagram of the shear key at the reference cable strand saddle. Figure 5 This is a diagram showing the arrangement of the cable strands along the entire bridge; Figure 6 The diagram shows the arrangement of anti-slip shear keys along the cable strands at the span points of the reference cable strands. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0033] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of the present invention is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0034] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but that it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0035] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0036] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as 2, 3, 4, 5, 6, 7, 8, or 9, and can even exceed nine.

[0037] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0038] Example 1 like Figures 1-6 As shown in the figure, this embodiment provides a method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys.

[0039] Specifically, the reference strand provided in this embodiment is made of high-precision standard wire (i.e., each wire in the strand is a high-precision standard wire with a length accuracy of 1 / 100,000 or higher), and a continuous, full-length cable-making method is adopted. The method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys provided in this embodiment differs from the traditional segmented manufacturing method, which requires multiple anchor head injection and cutting operations that may introduce errors. This method uses a continuous, full-length cable-making method to complete the strand fabrication in one go, avoiding the cumulative errors caused by multiple anchoring operations and improving the overall manufacturing accuracy of the strand.

[0040] Furthermore, in this embodiment or other embodiments, the reference strand is made using 19-wire or 37-wire high-precision standard wire. Using 19-wire high-precision standard wire to make the reference strand reduces the impact of standard wire weaving errors on strand length accuracy by decreasing the strand size, thus improving cable manufacturing accuracy while controlling strand manufacturing costs to the greatest extent. Preferably, 37-wire high-precision standard wire achieves a balance between strength and accuracy, making it suitable for suspension bridge projects with different spans and load requirements, thus enhancing the adaptability and flexibility of the technology.

[0041] The method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys provided in this embodiment includes the following steps: S1: The starting and ending marks of all standard wires in the reference strand are aligned using processes such as drawing and drumming.

[0042] By using the drawing and drumming process to align the starting and ending points of the standard wires, the length and tension of each standard wire can be precisely controlled, ensuring that they reach a highly consistent state before braiding. This allows the standard wires to maintain a uniform stress state during the braiding process, thereby reducing the error within the strand caused by uneven stress.

[0043] S2: As Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, shear keys are fixedly installed at each span point of the reference cable strand. The shear keys mate with the pre-reserved slots in the cable saddle, and are used to limit slippage between the reference cable strand and the cable saddle. Figure 3 This diagram illustrates the shear key connection between the reference cable strands and the main cable saddle. Figure 4 The diagram illustrates the shear key connection of the reference cable strand at the cable saddle.

[0044] Unlike traditional cable strands that use red and blue paint to mark the boundary points of each span, this cable strand uses anti-slip shear keys to mark the boundary points of each span. The shear keys fit into the pre-reserved slots set during the manufacturing of each cable saddle, which not only provides precise positioning but also prevents cable strand slippage that may occur during construction.

[0045] S3: Temporarily fix the reference strand at the baseline length mark position and wrap the reference strand with wrapping tape.

[0046] Preferably, temporary fixing is performed, for example, at the marked position every 700±10 meters of baseline length of the reference cable strand; more preferably, temporary fixing is performed at the marked position every 700 meters of baseline length of the reference cable strand.

[0047] The reference strand is a crucial reference standard for the alignment and tensioning of the main cable system. Slippage of the wires within the strand can cause deviations in the strand's geometry and tension from design requirements, thus affecting the bridge's structural integrity and load-bearing capacity. Temporary fixing at the baseline length markings effectively prevents wire slippage within the strand, ensuring the accuracy and stability of the reference strand.

[0048] Preferably, torpedo clips are used for temporary fixation at the baseline length marking positions of the reference cable strand. Specifically, torpedo clips can be used for temporary fixation at the 700-meter baseline length marking positions of the reference cable strand. The use of torpedo clips for temporary fixation provides extremely strong clamping force, ensuring that the wire rope will not slip under high tension.

[0049] Preferably, in this embodiment or other embodiments, the spacing between adjacent wrapping tapes is 1.5 ± 0.2 meters, and more preferably, the spacing between adjacent wrapping tapes is 1.5 meters.

[0050] The wrapping tape is wound at intervals of 1.5 ± 0.2 meters, which can firmly restrain the reference strands and prevent them from deforming or shifting due to changes in tension, wind, or temperature during construction, ensuring that the strands do not loosen. This shaping effect ensures that the strands maintain the geometric shape required by the design, providing a guarantee for the overall accuracy of the main cable and the structural stability of the suspension bridge.

[0051] Preferably, in this embodiment or other embodiments, each wrapping tape is wound in at least six layers. Preferably, the wrapping tape is wound in at least six layers, which further improves the shaping effect of the wrapping tape.

[0052] Preferably, in this embodiment or other embodiments, the wrapping method for each wrapping tape is as follows: first, wrap the non-adhesive side of the wrapping tape around twice, and then fold the wrapping tape over and wrap it around four times.

[0053] First, wrap the unbonded backing around the strand twice to smoothly conform to the surface of the strand, ensuring that the steel wires inside the strand can slide freely. When the strand is under stress, the steel wires will slide, and the bulging of the wires will be automatically eliminated. Therefore, the length of the strand is the average length naturally formed after the high-precision standard wire length is adaptive, which greatly reduces random errors and gross errors, and eliminates non-uniform errors inside the strand caused by braiding.

[0054] S4: Remove the temporary fixation to allow the steel wires inside the strand to slide freely. When the strand is under stress, use the average length that naturally forms after the standard wire length adapts as the length of the reference strand to set up the reference strand.

[0055] Preferably, such as Figure 1 As shown, a separate cable groove is used to erect the reference cable strand on the outside. Using a separate cable groove on the outside avoids the loss of reference function caused by the collapse of the cable strands during later erection, which is common in traditional systems where the reference cable is at the bottom. This ensures a reliable reference throughout the entire cable erection process. Furthermore, its location on the outside provides good visibility and facilitates automated and intelligent testing and upgrades.

[0056] The outer individual cable groove is a rectangular cable groove. The high-precision reference cable strand changes from a hexagonal shape in general locations to a rectangle at the main cable saddle and the branch cable saddle. The shape change is small, and the cable strand is easy to shape. Compared with the previous split-span high-precision reference cable strand, the construction difficulty of changing from a hexagonal shape to a rectangle is greatly reduced.

[0057] The method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys provided in this embodiment uses high-precision standard wires to make the reference strand. Through a continuous, full-length cable making method, all steel wires are cross-checked during the manufacturing process. The final strand length accuracy is the comprehensive accuracy of all ultra-high precision standard wires, with an accuracy of more than 1 / 50000, far exceeding the requirement of 1 / 12000 in the "Technical Conditions for Prefabricated Main Cable Strands of Suspension Bridges" (JT / T 395-1999). This significantly improves the forming quality of the main cable and the structural stress performance. After the reference strand is transported to the site, it is only necessary to align the span marking points with the span marking points on the saddle. High-precision erection can be achieved without complex sag adjustments. The method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys provided in this embodiment uses high-precision standard wires and a continuous, full-length cable-making process to eliminate intra-strand errors caused by uneven internal forces of the steel wires during cable braiding, coiling, and erection. When the strand is under stress, the steel wires can slide freely, the bulging phenomenon is automatically eliminated, and the strand length is based on the average length naturally formed after the high-precision standard wires adapt, greatly reducing random and gross errors and eliminating non-uniform intra-strand errors caused by cable braiding.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys, characterized in that, The reference strand is made of high-precision standard wire and uses a continuous, full-length cable-making method, including the following steps: S1: Align the start and end marks of all standard wires in the reference strand; S2: Shear keys are fixedly installed at each span point of the reference cable strand. The shear keys are matched with the reserved slots of the cable saddle. The shear keys are used to limit the slippage between the reference cable strand and the cable saddle. S3: Temporarily fix the reference cable strand at the baseline length mark position and wrap the reference cable strand with wrapping tape; S4: Remove the temporary fixation to allow the steel wires inside the strand to slide freely. When the strand is under stress, use the average length that naturally forms after the standard wire length adapts as the length of the reference strand, and then set up the reference strand.

2. The method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys according to claim 1, characterized in that, The reference strand is made of 19 high-precision standard wires.

3. The method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys according to claim 1, characterized in that, The reference strand is made of 37 high-precision standard wire.

4. The method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys according to claim 1, characterized in that, In S1, the drawing and drumming processes are used to align the start and end marks of all standard wires in the reference strand.

5. The method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys according to claim 1, characterized in that, In S3, temporary fixation is performed at the marked positions every 700±10 meters of baseline length on the reference cable strand.

6. The method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys according to claim 1, characterized in that, In S3, torpedo clips are used for temporary fixation at the baseline length mark position of the reference cable strand.

7. The method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys according to claim 1, characterized in that, In S3, the spacing between adjacent wrapping tapes is 1.5 ± 0.2 meters.

8. The method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys according to claim 1, characterized in that, In S3, each wrapping tape is wrapped with no less than six layers.

9. The method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys according to claim 1, characterized in that, In S3, the wrapping method for each wrapping tape is as follows: first, wrap the non-adhesive side of the wrapping tape around twice, then fold the wrapping tape over and wrap it around four times.

10. The method for erecting the reference strand of the main cable of a continuous suspension bridge with anti-slip shear keys according to claim 1, characterized in that, In S4, a separate cable groove is used to erect the reference cable strand on the outside.

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