A method and device for testing force of super-long cable-stayed cable and storage medium

Abstract

The application discloses a kind of super-long cable-stayed cable force test method, device and storage medium, belong to cable-stayed cable detection technical field, the method includes: obtaining the position coordinates of three mark points on mark line circle, wherein mark line is three, respectively located at the both ends and intermediate position of cable-stayed cable;Cable-stayed cable center coordinates of mark line position are calculated according to the position coordinates of three mark points;Cable-stayed cable sag is calculated according to the cable-stayed cable center coordinates of three mark line positions;According to the cable-stayed cable sag and the cable force calculation relationship between cable force of cable-stayed cable of suspension cable theory, cable force calculation relationship is obtained;Cable-stayed cable sag is substituted into cable force calculation relationship, and cable force of cable-stayed cable is calculated.The application is suitable for super-long cable monitoring, test data is less and data processing time is short, can satisfy real-time, high-precision dynamic monitoring demand.

Description

TECHNICAL FIELD

[0001] The application relates to a super-long cable-stayed cable force testing method, device and storage medium, and belongs to the technical field of cable-stayed cable detection. BACKGROUND

[0002] Traditional cable force testing mainly relies on the spectrum method, but for super-long cable-stayed cables of large-span cable-stayed bridges, the length of the super-long cable-stayed cables is significantly increased, which leads to a large error of the spectrum method in actual application and makes it difficult to meet the high-precision monitoring requirement. Specifically, the error sources can be summarized as follows: 1) difficulty in capturing low-order frequencies. For super-long cable-stayed cables, the fundamental frequency can be as low as 0.2 Hz or even lower, and the resolution of a conventional acceleration sensor cannot meet this accuracy requirement, which makes it difficult to accurately capture the low-order frequencies. 2) confusion of multiple-order frequencies. Under complex environmental vibration conditions, low-order frequencies can be masked by high-order frequencies, further affecting the accuracy of cable force testing.

[0003] To solve the above problems, the existing method of calculating cable force based on catenary shape can significantly improve the test deviation and reliability of super-long cable-stayed cables. However, the existing catenary shape measurement technology (such as three-dimensional scanning) still has the following limitations in super-long cable monitoring: 1) the effective measurement range of three-dimensional scanning is short, the effective distance is insufficient, and it is difficult to cover the full span of a kilometer-long cable-stayed cable. Moreover, the processing of massive point cloud data is time-consuming and inefficient, which cannot meet the real-time and high-precision dynamic monitoring requirement. 2) Night operation is limited: In order to avoid the influence of solar temperature difference, cable force measurement is usually carried out at night, and additional lighting equipment is required for night measurement, which increases the complexity of on-site implementation. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the defects of the prior art and provide a super-long cable-stayed cable force testing method, device and storage medium, which is suitable for super-long cable monitoring, has less test data and short data processing time, and can meet the real-time and high-precision dynamic monitoring requirement.

[0005] To solve the above technical problems, the technical solution adopted by the present application is as follows:

[0006] In a first aspect, the present application provides a super-long cable-stayed cable force testing method, comprising the following steps:

[0007] Obtaining the position coordinates of three marker points on the marker line, wherein the marker line is three, respectively located at the two ends and the middle position of the cable-stayed cable;

[0008] Calculating the cable-stayed cable center coordinates of the marker line position according to the position coordinates of the three marker points;

[0009] Calculating the cable-stayed cable sag according to the cable-stayed cable center coordinates of the three positions;

[0010] According to the catenary theory, a cable force calculation relationship between the cable sag and the cable force of the cable is calculated;

[0011] The cable sag is substituted into the cable force calculation relationship to calculate the cable force of the cable.

[0012] The marking points on the marking line are evenly distributed along the cable, and the marking points are formed by pasting fluorescent reflective sheets or applying reflective paint on the cable body, and the distance between the marking points is adjusted so that at least three marking points can be seen on a single marking line of the cable on one side.

[0013] The cable center coordinates of the marking line position calculated according to the position coordinates of the three marking points include:

[0014] Let the coordinates of the three marking points be , and , the cable center coordinates calculated according to the position coordinates of the three marking points are , wherein , and are the x-axis coordinate, the y-axis coordinate and the z-axis coordinate of the first marking point, , and are the x-axis coordinate, the y-axis coordinate and the z-axis coordinate of the second marking point, , and are the x-axis coordinate, the y-axis coordinate and the z-axis coordinate of the third marking point, , and are the x-axis coordinate, the y-axis coordinate and the z-axis coordinate of the cable center, and the calculation formula is:

[0015] (1),

[0016] (2),

[0017] wherein represent the coordinate values of the normal vector of the marking line plane on the x-axis, the y-axis and the z-axis, respectively.

[0018] Let the three cable center coordinates be , and , wherein represents the cable center coordinates corresponding to the marking line close to the beam end, represents the cable center coordinates corresponding to the marking line close to the tower end, represents the cable center coordinates corresponding to the marking line in the middle, , and are the x-axis coordinate, y-axis coordinate and z-axis coordinate of the cable circle center corresponding to the marking line near the beam end, respectively, , and are the x-axis coordinate, y-axis coordinate and z-axis coordinate of the cable circle center corresponding to the marking line near the tower end, respectively, , and are the x-axis coordinate, y-axis coordinate and z-axis coordinate of the cable circle center corresponding to the marking line in the middle, respectively.

[0019] The calculation formula of the sag of the cable according to the cable circle center coordinates of the three positions is:

[0020] (3),

[0021] (4),

[0022] (5),

[0023] (6),

[0024] (7),

[0025] (8),

[0026] wherein, is , the straight line length between two points; is , the horizontal distance between two points; is , the vertical height difference between two points; is , the horizontal distance between two points; is to , the vertical distance of the line connecting two points; is the sag of the cable, i.e. the vertical distance of the line connecting the midspan point and , two points.

[0027] The calculation formula of the cable force calculation relationship between the sag of the cable and the cable force calculated according to the suspension cable theory is:

[0028] (9),

[0029] (10),

[0030] (11),

[0031] (12),

[0032] (13),

[0033] (14),

[0034] wherein, is the central deflection coefficient of the cable; is the unit length self weight of the cable; is the unit length weight of the cable in the horizontal direction; is the , the horizontal inclination angle of the two-point line; represents the horizontal distance between the point and the cable force of the point; is the cable force of the point; is the cable force of the point.

[0035] In a second aspect, the present application provides a super-long cable force testing device, comprising:

[0036] a coordinate acquisition module, configured to acquire the position coordinates of three marking points on the marking line, wherein the marking line is three, respectively located at the two ends and the middle position of the cable;

[0037] a center coordinate conversion module, configured to calculate the cable center coordinates of the marking line position according to the position coordinates of the three marking points;

[0038] a cable sag calculation module, configured to calculate the cable sag according to the cable center coordinates of the three marking line positions;

[0039] a calculation relationship construction module, configured to calculate the cable force calculation relationship between the cable sag and the cable force according to the cable sag theory;

[0040] a calculation module, configured to substitute the cable sag into the cable force calculation relationship to calculate the cable force.

[0041] In a third aspect, the present application provides a computer readable storage medium, which stores computer programs / instructions, and the computer programs / instructions are executed by a processor to realize the steps of the super-long cable force testing method.

[0042] The beneficial effects of this invention are as follows: This invention provides a method, device, and storage medium for testing the cable force of ultra-long cable-stayed bridges. It acquires the position coordinates of three marker points on a marking line circumference. The marking line consists of three lines, located at both ends and the middle of the cable-stayed bridge. Only the position coordinates of the marker points on these three lines need to be measured. The marker points are evenly distributed along the entire circumference of the cable-stayed bridge. The marker points are formed by attaching fluorescent reflective sheets or coating reflective paint to the cable body. The cable-stayed bridge linear marking lines are pre-set during the manufacturing stage, achieving high-precision positioning through standardized processes. Using fluorescent reflective sheets as the marking material eliminates the need for subsequent installation and removal. Its high visibility at night meets the requirements for all-weather measurement, and the entire circumference of the marking line covers the cable, allowing for real-time monitoring even if the cable body twists. It is particularly suitable for monitoring the cable force of ultra-long cables, requiring less test data and shorter data processing time. For cable-stayed bridges exceeding 500m, the cable force test deviation can be within 1%, significantly better than traditional measurement methods such as spectrum analyzers, and can meet the requirements for real-time, high-precision dynamic monitoring. Attached Figure Description

[0043] Figure 1 This is a schematic diagram showing the position of the cable-stayed bridge marking line in this invention;

[0044] Figure 2 This is a schematic diagram of the unfolded fluorescent reflective sheet in this invention;

[0045] Figure 3 This is a schematic diagram of the arrangement of the fluorescent reflective sheet on the cable in this invention;

[0046] Figure 4 This is a diagram illustrating the meanings of the symbols for the cable-stayed bridge in this invention;

[0047] Figure 5 This is a flowchart illustrating a method for testing the cable force of an ultra-long cable-stayed bridge according to the present invention.

[0048] Figure 6 This invention relates to the test deviation of cable force and horizontal inclination angle for a kilometer-level three-tower cable-stayed bridge. Relationship diagram;

[0049] Figure 7 This is a graph showing the relationship between the cable force test deviation and the straight length L of the cable stays of a kilometer-class three-tower cable-stayed bridge. Detailed Implementation

[0050] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and should not be used to limit the scope of protection of the present invention.

[0051] Example 1

[0052] like Figure 5As shown, this invention discloses a method for testing the cable force of ultra-long cable-stayed structures, comprising the following steps:

[0053] Step 1: Obtain the position coordinates of three marker points around the marking line, where there are three marking lines, located at the two ends and the middle of the cable.

[0054] During the cable-stayed bridge manufacturing stage, marking lines must be pre-marked on the cable surface to provide a reference for subsequent measurement of the catenary's alignment after installation. The marking lines must meet the following technical requirements:

[0055] 1) After the stay cables are installed, the installation and removal of the marking lines are extremely difficult. Traditional prism measurement methods rely on cable-climbing robots to install and remove the prisms, which are complex and costly, and therefore unsuitable. This invention uses a method of directly pasting high-strength fluorescent reflective sheets or coating with long-lasting high-reflectivity paint to achieve "zero extra steps" in fixing the marking lines, ensuring construction efficiency.

[0056] 2) To avoid the influence of temperature difference between day and night, cable tension measurement is usually carried out at night. The marking line needs to have high visibility at night or in low light environment to adapt to the measurement operation requirements under no sunlight conditions and ensure the accuracy of measurement data.

[0057] 3) The marking lines should be evenly distributed along the entire loop of the cable to form a 360° full coverage, so that even if the cable twists, it can still be monitored through multiple points.

[0058] In summary, the marking lines are selected near the ends (A, B) and the middle (C) of the cable body, specifically as follows: Figure 1 As shown in the figure. In this embodiment, a fluorescent reflective sheet is specifically pasted around the entire surface of the cable-stayed bridge. The markings on the fluorescent reflective sheet are as follows. Figure 2 As shown, d can be determined based on on-site measurement conditions, with at least three marker points visible on one side of the cable as the baseline. The pasting format is as follows: Figure 3 As shown.

[0059] This invention uses a total station to measure the marked points on the fluorescent reflector sheet. At least three marked points are measured along one marking line. The coordinates of the three marked points are denoted as follows: , and Calculate the coordinates of the center of the cable-stayed cable based on the coordinates of the three points. ,in , and These are the x-axis, y-axis, and z-axis coordinates of the first marker point. , and These are the x-axis coordinates, y-axis coordinates, and z-axis coordinates of the second marker point. , and are the x-axis coordinate, y-axis coordinate and z-axis coordinate of the third marker point, respectively, , and are the x-axis coordinate, y-axis coordinate and z-axis coordinate of the cable loop center, respectively, and the calculation formula is:

[0060] (1),

[0061] (2),

[0062] wherein, represent the coordinate values of the normal vector of the marker line plane on the x-axis, y-axis and z-axis, respectively.

[0063] Step two, the cable loop center coordinates of the marker line position are calculated according to the position coordinates of the three marker points.

[0064] Let the three cable loop center coordinates be , and , wherein represents the cable loop center coordinates corresponding to the marker line close to the beam end, represents the cable loop center coordinates corresponding to the marker line close to the tower end, represents the cable loop center coordinates corresponding to the marker line in the middle, , and are the x-axis coordinate, y-axis coordinate and z-axis coordinate of the cable loop center corresponding to the marker line close to the beam end, respectively, , and are the x-axis coordinate, y-axis coordinate and z-axis coordinate of the cable loop center corresponding to the marker line close to the tower end, respectively, , and are the x-axis coordinate, y-axis coordinate and z-axis coordinate of the cable loop center corresponding to the marker line in the middle, respectively.

[0065] Step three, the cable sag is calculated according to the cable loop center coordinates of the three marker line positions, and the specific calculation formula is:

[0066] (3),

[0067] (4),

[0068] (5),

[0069] (6),

[0070] (7),

[0071] (8),

[0072] in, for , The length of the straight line between two points; for , The horizontal distance between two points; for , The vertical height difference between two points; for , The horizontal distance between two points; for arrive , The perpendicular distance between two points; The sag of the cable (mid-span deflection of the cable), i.e., from the mid-span point to the... , The perpendicular distance between two points.

[0073] Step four: Calculate the relationship between the sag of the stay cable and the cable force according to suspension cable theory. The meanings of the symbols for the stay cable are as follows: Figure 4 As shown, the specific calculation formula is as follows:

[0074] (9),

[0075] (10)

[0076] (11),

[0077] (12)

[0078] (13)

[0079] (14)

[0080] in, The central deflection coefficient of the stay cable; The self-weight per unit length of the stay cable; The weight per unit length of the horizontal cable of the stay cable; for , The horizontal angle of the line connecting the two points; Representative and The horizontal distance between the points is cable force of the point of the stay cable; cable force of the point of the stay cable; cable force of the point of the stay cable; cable force of the point of the stay cable; cable force of the point of the stay cable.

[0081] Step five, the sag of the stay cable is substituted into the cable force calculation relationship to obtain the cable force of the stay cable.

[0082] Step six, the geometric characteristics of the stay cable are substituted into the formula to obtain the test deviation of the method.

[0083] The total station measurement has a deviation, which further affects the cable force test result, so the cable force test deviation of the method needs to be analyzed to determine the application range of the method.

[0084] 1) The mileage measurement deviation is represented by symbol , and the changed parameters caused by the measurement deviation are represented in the form of the corresponding symbol in step four followed by an apostrophe ( ).

[0085] (15),

[0086] (16),

[0087] (17),

[0088] (18),

[0089] Because , the order of magnitude is 100m; close to 0, considering the possible deviation actually occurring, the order of magnitude is 1m; the order of magnitude is 0.01m, so: the order of magnitude is 10 -6 , the order of magnitude is 10 -8 , therefore, formula (17) can be simplified as:

[0090] (19),

[0091] When , , and:

[0092]

[0093] wherein, the order of magnitude is 0.01m, the order of magnitude is 100m, so order of 10 -4 Therefore, when , .

[0094] When , , and:

[0095]

[0096] Therefore, when , .

[0097] In summary, formula (18) can be simplified as:

[0098] (20),

[0099] 2) The elevation measurement deviation is denoted by symbol , and the changed parameter after the measurement deviation is denoted by the form of the corresponding symbol in step four plus an apostrophe ( ).

[0100] (21),

[0101] (22),

[0102] (23),

[0103] When , , and:

[0104]

[0105] wherein, order of 0.01 m, order of 100 m, so order of 10 -4 Therefore, when , .

[0106] When , , and:

[0107]

[0108]

[0109] Therefore, when , .

[0110] Therefore, formula (23) can be simplified as:

[0111] (24),

[0112] 3) The symbol of the measurement deviation of the cable length is represented by , the symbol of the measurement deviation of the height is represented by , and the symbol of the changed parameter caused by the measurement deviation is represented by , and the changed parameter is represented by the symbol in step four plus an apostrophe , The test deviation of the cable force caused by the measurement deviation is:

[0113] (25),

[0114] 4) Actual application range analysis: according to experience, the measurement deviation of the total station reflector measuring technology can be controlled within 2 cm in the actual measurement process, and ±0.03 cm is taken as the adverse case, ±0.03 cm is taken. It is generally believed that the test deviation of the cable force dynamometer is 5%. Therefore, when formula (26) is satisfied, it can be considered that the test deviation of the method of the present application is better than the test deviation of the traditional cable force dynamometer. Formula (26) can be further simplified as formula (27).

[0115] In summary, the test deviation of the cable force of the cable-stayed bridge can be accurately calculated by programming, or the simplified formula (27) can be used for estimation.

[0116] (26),

[0117] (27),

[0118] Step seven, taking the cable force test of a kilometer-level three-tower cable-stayed bridge as an example, Figure 6 is the relationship between the cable force test deviation of the kilometer-level three-tower cable-stayed bridge and the horizontal inclination , and Figure 7 is the relationship between the cable force test deviation of the kilometer-level three-tower cable-stayed bridge and the straight line length L of the cable. Table 1, Table 2 and Table 3 are the actual sag and cable force, the test deviation calculated by programming and the test deviation estimated according to the formula.

[0119] The results show that when the horizontal inclination of the cable is less than 60° and the straight line length L is greater than 230 m, the cable force test deviation can be controlled within 5%. When the horizontal inclination of the cable is less than 30° and the straight line length L is greater than 500 m, the cable force test deviation can be controlled within 1%. Formula (27) can be used to approximately estimate the cable force test deviation.

[0120] Table 1 Cable force test results of a kilometer-level three-tower cable-stayed bridge (1)

[0121]

[0122] Table 2 Cable force test results of a kilometer-level three-tower cable-stayed bridge (2)

[0123]

[0124] Table 3 Cable force test results of a kilometer-level three-tower cable-stayed bridge (3)

[0125]

[0126] Embodiment 2

[0127] The embodiment discloses a super-long cable-stayed cable force test device, comprising:

[0128] A coordinate acquisition module is configured to acquire position coordinates of three marking points on a marking line, wherein the marking line is three, and is located at two ends and a middle position of the cable-stayed cable.

[0129] A center coordinate conversion module is configured to calculate cable-stayed cable center coordinates of the marking line position according to the position coordinates of the three marking points.

[0130] A cable-stayed cable sag calculation module is configured to calculate cable-stayed cable sag according to the cable-stayed cable center coordinates of the three positions.

[0131] A calculation relationship construction module is configured to calculate a cable force calculation relationship formula between the cable-stayed cable sag and the cable-stayed cable force according to the suspension cable theory.

[0132] A calculation module is configured to substitute the cable-stayed cable sag into the cable force calculation relationship formula to calculate the cable-stayed cable force.

[0133] The specific function implementation of each module is referred to the related content in the method of embodiment 1, and will not be described here.

[0134] Embodiment 3

[0135] The embodiment discloses a computer readable storage medium, which stores a computer program / instruction, and the computer program / instruction is executed by a processor to realize the steps of the super-long cable-stayed cable force test method in embodiment 1.

[0136] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart or flows and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart or flows and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart or flows and / or block diagram block or blocks.

[0137] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the Figure 1 one or more functions specified in the flowchart or flows and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart or flows and / or block diagram block or blocks.

[0138] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart or flows and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart or flows and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart or flows and / or block diagram block or blocks.

[0139] The above only is the preferred embodiment of the present application, it should be pointed out that: for those skilled in the technical field, without departing from the principles of the present application, can also make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A method for testing the cable force of ultra-long cable-stayed bridges, characterized in that: Includes the following steps: Obtain the position coordinates of three marker points around the marking line, where there are three marking lines, located at the two ends and the middle of the cable. The coordinates of the center of the cable-stayed cable at the position of the marking line are calculated based on the position coordinates of the three marking points. The sag of the cable is calculated based on the coordinates of the center of the cable at the positions of the three marked lines. The relationship between cable sag and cable force is calculated based on suspension cable theory. Substitute the sag of the stay cable into the formula for calculating the cable force to obtain the cable force of the stay cable; Let the coordinates of the centers of the three cable stays be denoted as follows: , and ,in This represents the coordinates of the center of the stay cable corresponding to the mark line near the beam end. This represents the coordinates of the center of the stay cable corresponding to the marker line near the tower end. This represents the coordinates of the center of the cable-stayed bridge located at the midpoint of the marked line. , and These are the x-axis, y-axis, and z-axis coordinates of the center of the stay cable corresponding to the mark line near the beam end. , and These are the x-axis, y-axis, and z-axis coordinates of the center of the cable-stayed cable corresponding to the marking line near the tower end. , and These are the x-axis, y-axis, and z-axis coordinates of the center of the cable-stayed cable corresponding to the middle marker line, respectively. The formula for calculating the sag of the stay cable based on the coordinates of the center of the cable circle at the positions of the three marked lines is as follows: （3）， （4）， （5）， （6）， （7）， （8）， in, for , The length of the straight line between two points; for , The horizontal distance between two points; for , The vertical height difference between two points; for , The horizontal distance between two points; for arrive , The perpendicular distance between two points; The sag of the cable-stayed bridge is measured from the midpoint of the span to the sag of the cable. , The perpendicular distance between two points; The formula for calculating the relationship between the sag and cable force of a stay cable, obtained according to suspension theory, is as follows: （9）， （10）， （11）， （12）， （13）， （14）， in, The central deflection coefficient of the stay cable; The self-weight per unit length of the stay cable; The weight per unit length of the horizontal cable of the stay cable; for , The horizontal angle of the line connecting the two points; Representative and The horizontal distance between the points is The cable force at the point of connection; for The cable force at the point of connection; for The tension of the cable in the inclined plane at the point.

2. The method for testing the cable force of ultra-long cable-stayed bridges according to claim 1, characterized in that: The marking points on the marking line are evenly distributed along the entire circle of the cable. The marking points are formed by attaching fluorescent reflective sheets or coating reflective paint to the cable body. The distance between each marking point is adjusted so that at least three marking points can be seen on a single marking line of one side of the cable.

3. The method for testing the cable force of ultra-long cable-stayed bridges according to claim 1, characterized in that: The calculation of the center coordinates of the cable-stayed cable based on the position coordinates of the three marker points includes: Let the coordinates of the three marker points be denoted as follows: , and The coordinates of the center of the cable-stayed bridge were calculated based on the position coordinates of the three marked points. ,in , and These are the x-axis, y-axis, and z-axis coordinates of the first marker point. , and These are the x-axis coordinates, y-axis coordinates, and z-axis coordinates of the second marker point. , and These are the x-axis coordinates, y-axis coordinates, and z-axis coordinates of the third marker point. , and These are the x-axis, y-axis, and z-axis coordinates of the center of the cable-stayed cable, respectively, and the calculation formula is: （1）， （2）， in, These represent the coordinates of the normal vector of the marked line plane on the x-axis, y-axis, and z-axis, respectively.

4. A device for testing the cable force of an ultra-long cable-stayed bridge, characterized in that: The method for testing the cable force of ultra-long cable-stayed bridges according to any one of claims 1-3 includes: The coordinate acquisition module is used to obtain the position coordinates of three marker points on the perimeter of the marking line, where there are three marking lines, located at both ends and the middle of the cable. The center coordinate conversion module is used to calculate the center coordinates of the cable-stayed cable at the position of the marking line based on the position coordinates of the three marking points; The cable sag calculation module is used to calculate the cable sag based on the coordinates of the cable center of the three marked lines. The calculation relationship construction module is used to calculate the cable force calculation relationship between the sag of the stay cable and the cable force according to the suspension theory. The calculation module is used to substitute the sag of the stay cable into the cable force calculation formula to calculate the cable force of the stay cable.

5. A computer-readable storage medium having a computer program / instructions stored thereon, characterized in that: When the computer program / instruction is executed by the processor, it implements the steps of the ultra-long cable tension testing method according to any one of claims 1-3.

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