Stay cable watertight detection control method and system

Abstract

The invention relates to the technical field of automatic control, in particular to a stay cable watertight detection control method which comprises the steps that S1, the real-time water temperature of colored water is obtained and compared with a preset water temperature threshold value; s2, liquid level height information is obtained and compared with a preset liquid level height threshold value; s3, whether the water temperature and the liquid level height meet preset conditions or not is judged; s4, the heating state of the heating device is obtained, and the existing water temperature is maintained; s5, according to the number of preset first cycle periods, the axial stretching device is controlled to apply axial tension to the stay cable circularly; s6, axial tension is collected according to the set tension collection period I; s7, according to the preset number of times of a second cycle period, the transverse stretching device is controlled to circularly apply transverse tension to the stay cable; s8, collecting transverse tension according to the set second tension collection cycle; and S9, monitoring the first load value, the second load value and the water temperature through the control terminal, and giving an alarm when the first load value, the second load value and the water temperature are abnormal.

Description

Technical Field

[0001] The present invention relates to the field of automatic control technology, and in particular to a stay cable watertightness detection control method and system. Background Art

[0002] Many existing bridges use cables as the load-bearing method, such as cable-stayed bridges, suspension bridges, steel structure hanger cable bridges, etc. The cable-stayed cable is used in a special environment. The anchors at both ends of the cable are located in the embedded steel sleeves of the beams and towers, which are relatively concealed. However, this part is often a weak position in the cable-stayed structure that is susceptible to external erosion. During use, water ingress into the cable anchors at both ends of the cable can easily lead to corrosion and damage of the cable. In order to effectively improve the anti-corrosion performance of the cable system, optimizing the sealing structure of the cable anchor and ensuring the sealing reliability of the cable anchor are the most effective ways to reduce bridge cable diseases.

[0003] The existing detection method is to put the test piece into colored water, stretch the inclined cable multiple times through the stretching device, and then observe the water seepage manually. The test process is mostly done manually, and the technical level of the tester and the proficiency of the test equipment operation directly affect the accuracy of the test. Therefore, an automatic control system and method are urgently needed to ensure the test quality. Summary of the invention

[0004] The present invention controls the water tightness detection process of the inclined cable by an automatic control method, thereby ensuring the automation of the detection process and the consistency of the detection, reducing the influence of human factors on the detection process and improving the accuracy of the detection.

[0005] The technical solution provided by the present invention is: a method for controlling watertightness detection of a stay cable, the method comprising: S1. Obtain the real-time water temperature of the colored water and compare it with the preset water temperature threshold; S2, obtaining liquid level information and comparing it with a preset liquid level threshold; S3, judging whether the water temperature and liquid level meet the preset conditions, if so, proceeding to the next step; if not, issuing a water injection and heating request message, and proceeding to step S1; S4, obtaining the heating status of the heating device and maintaining the current water temperature; S5, controlling the axial tensioning device to cyclically apply axial tension to the inclined cable according to a preset number of first cycle periods; S6. Collect the axial tension according to the set tension collection cycle 1, obtain multiple first load values, and feed them back to the control terminal; S7, controlling the transverse stretching device to cyclically apply transverse tension to the inclined cable according to a preset second cycle number; S8, collecting the lateral tension according to the set tension collection method, obtaining multiple second load values, and feeding back the values ​​to the control terminal; S9. Monitor the first load value, the second load value and the water temperature through the control terminal, and alarm when the first load value, the second load value and the water temperature are abnormal.

[0006] Preferably, the step of determining whether the water temperature and the liquid level meet preset conditions includes: The water temperature T S The preset water temperature lower limit T b Compare, if |T S -T b |≤3℃, the water temperature is normal; The obtained liquid level H s The preset lower limit of liquid level H b Compare, if |H S -H b |≤1cm, the liquid level is normal.

[0007] Preferably, obtaining the heating state of the heating device to maintain the existing water temperature includes: Check whether the heating device is turned on; If the heating device is not started and the water temperature T S If normal, keep the current working status; If the heating device is turned on and the water temperature T S If it is normal, stop heating, and collect temperature data from the temperature sensor according to the set collection cycle and send it to the control terminal.

[0008] Preferably, the step of controlling the axial tensioning device to cyclically apply axial tension to the stay cable according to a preset first cycle number includes: Obtaining an upper limit L1 of the axial tension value, wherein L1 is not less than 45% of an upper limit value of the stress of the inclined cable; Obtaining a lower limit L2 of the axial tension value, wherein L2 is not less than 20% of an upper limit value of the inclined cable stress; Get the upper limit holding time T L1 And the lower limit is maintained for a period of time T L2 ; Get the first cycle number The first cycle number is the number of times from applying axial tension to L1 and then unloading to L2. ≥10; The control terminal sets the first cycle number, the upper limit L1 of the axial tension value, and the lower limit L2 of the axial tension value, and maintains the duration T L1 And the lower limit is maintained for a period of time T L2 , control the axial stretching device to axially stretch the inclined cable.

[0009] Preferably, collecting the axial tension according to the set tension collection cycle 1, obtaining a plurality of first load values, and feeding back the values ​​to the control terminal, comprises: Obtain the start-up status of the axial stretching device; According to the preset collection frequency Collecting data from the axial tension sensor, obtaining the tensile force value of the axial tension device, that is, the first load value, and transmitting the first load value to the control terminal; .

[0010] The method of controlling the transverse stretching device to cyclically apply transverse tension to the stay cable according to a preset second cycle number includes: Get real-time water temperature T S , if T S =T b ±3℃, the preset second cycle number is obtained, and the transverse stretching device is controlled to apply transverse tension to the inclined cable to reach the set second cycle number When the transverse stretching device stops stretching, the second cycle number is the number of times from applying the transverse tension to the upper limit of the transverse tension and then unloading to 0; Hz; Start the heating device to heat the colored water; Get real-time water temperature T S , if T S =T t ±3℃, where T t Indicates the preset upper limit of water temperature; then obtain the preset second cycle number, control the transverse tension device to apply transverse tension to the inclined cable, and reach the set second cycle number When , stop the stretching action of the transverse stretching device.

[0011] Preferably, the step of collecting the lateral tension according to the set tension collection unit, obtaining a plurality of second load values, and feeding back the values ​​to the control terminal includes: Obtaining the start-up status of the transverse stretching device; According to the preset collection frequency Collecting data from the transverse tension sensor, obtaining the tensile force value of the transverse stretching device, that is, the second load value, and transmitting the second load value to the control terminal; .

[0012] Preferably, the step of monitoring the first load value, the second load value and the real-time water temperature through the control terminal and giving an alarm when the first load value, the second load value and the water temperature are abnormal includes: The first load value obtained is compared with the upper limit L1 of the axial tension value, and the second load value obtained is compared with the upper limit L0 of the lateral tension value. If the first load value is greater than L1 and the second load value is greater than the upper limit L0, an overload alarm is issued, and the axial stretching device or the lateral stretching device is controlled to stop stretching; After the time interval t, data is collected again from the axial tensile sensor or the transverse tensile sensor. If the first load value and the second load value still do not decrease, a shutdown alarm is issued to notify the on-site staff to intervene. The real-time water temperature T S With T t Compare, if T S >T t +6℃, a high temperature alarm is sent and the heating device is controlled to stop heating; After a time interval t1, data is collected from the temperature sensor again. If the real-time water temperature still does not drop, a shutdown alarm is issued to notify on-site staff to intervene.

[0013] The present invention also provides a stay cable watertightness detection control system, comprising a control terminal, a temperature sensor, a water level sensor, a lateral tension sensor, an axial tension sensor and a plurality of position switches, characterized in that the system is used to execute the stay cable watertightness detection control method; The control terminal is used to receive data transmitted by the temperature sensor, the water level sensor, the transverse tension sensor, the axial tension sensor and the position switch, and to send control instructions and alarm signals to the transverse stretching device and the axial stretching device; The temperature sensor is used to collect temperature data of colored water, and the water level sensor is used to collect liquid level data of colored water; the transverse tensile sensor is used to detect transverse tensile force; the axial tensile sensor is used to collect axial tensile force; and the position switch is used for transverse angle offset data of the inclined cable.

[0014] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the aforementioned method for controlling watertightness detection of a stay cable.

[0015] Beneficial effects of the present invention: 1. In the present invention, during the test, the upper limit L1 of the axial tension value is maintained to be not less than 45% of the upper limit value of the stress of the inclined cable, ensuring that the maximum tension applied during the test will not exceed the safety limit of the inclined cable design, and the lower limit L2 of the axial tension value is maintained to be not less than 20% of the upper limit value of the stress of the inclined cable. It is ensured that even in the unloading stage, the inclined cable is subjected to a certain tension, so that the test system can simulate the lowest stress state in actual work. By setting the number of cycles of the first cycle period, it is ensured that the test system can simulate the performance of the inclined cable under long-term cyclic load. During the entire cycle process, the state of the inclined cable is continuously monitored to ensure that the tension is evenly applied and no abnormal situation occurs. By recording the tension value, the holding time and the response of the inclined cable in each cycle, data support is provided for subsequent analysis.

[0016] 2. The present invention obtains the real-time water temperature T S And compare whether it is within the preset water temperature lower limit T b This is to ensure the temperature stability of the test environment so that the system can simulate the different temperature conditions that the cable may encounter in actual use. S If it is not within the allowed range, start the heating device to heat the colored water until the water temperature reaches the preset upper limit T t within the range of ±3℃. This adjustment ensures that the test can be carried out under extreme temperature conditions, thereby more comprehensively evaluating the performance of the inclined cable. After confirming that the water temperature meets the test standards, obtain the preset second cycle number. This parameter defines the number of processes from applying lateral tension to the upper limit of lateral tension and then unloading to 0. According to the set second cycle number and other related parameters (lateral offset angle), the transverse tensioning device is controlled to apply lateral tension to the inclined cable. Once the set second cycle number is reached, the stretching action of the transverse tensioning device is stopped. Ensure that the test system should provide enough lateral loading and unloading processes for the inclined cable, so that the test system is sufficient to evaluate its watertightness and structural integrity under long-term lateral loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a flow chart of a method for controlling watertightness detection of a stay cable. DETAILED DESCRIPTION

[0018] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0019] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0020] refer to Figure 1 The technical solution provided by the present invention is: a method for controlling watertightness detection of a stay cable, comprising the following steps: S1. Obtain the real-time water temperature of the colored water and compare it with the preset water temperature threshold; S2, obtaining liquid level information and comparing it with a preset liquid level threshold; S3, judging whether the water temperature and liquid level meet the preset conditions, if so, proceeding to step S4; if not, issuing water injection and heating request information, and proceeding to step S1; The specific steps for judging whether the water temperature and liquid level meet the preset conditions are as follows: Collect temperature sensor data, obtain real-time water temperature, and convert the real-time water temperature T S The preset water temperature lower limit T b Compare, if |T S -T b |≤3℃, the water temperature is normal; Collect water level sensor data to obtain the water level of colored water, and convert the obtained liquid level H s The preset lower limit of liquid level H b Compare, if |H S -H b |≤1cm, the liquid level is normal.

[0021] S4. Obtain the heating status of the heating device and maintain the current water temperature. The specific steps are as follows: Check whether the heating device is turned on; If the heating device is not started and the water temperature T S Normal, keep the current working state; if the heating device is started and the water temperature T S If it is normal, stop heating, and collect temperature data from the temperature sensor according to the set collection cycle and send it to the control terminal.

[0022] Because some test systems need to perform multiple axial tensile or transverse tensile tests under a certain water temperature. This step allows the system to maintain a constant water temperature.

[0023] S5. According to the preset first cycle number, the axial tension device is controlled to cyclically apply axial tension to the inclined cable. The specific steps are as follows: Obtaining an upper limit L1 of the axial tension value, wherein L1 is not less than 45% of an upper limit value of the stress of the inclined cable; Obtaining a lower limit L2 of the axial tension value, wherein L2 is not less than 20% of an upper limit value of the inclined cable stress; Get the upper limit holding time T L1 And the lower limit is maintained for a period of time T L2 ; Get the first cycle number The first cycle number is the number of times from applying axial tension to L1 and then unloading to L2. ≥10; The control terminal sets the first cycle number, the upper limit L1 of the axial tension value, and the lower limit L2 of the axial tension value, and maintains the duration T L1 And the lower limit is maintained for a period of time T L2 , control the axial stretching device to axially stretch the inclined cable.

[0024] This step is suitable for testing the water tightness of the cable after multiple cycles of stretching at the same temperature. The upper limit of the axial tension value L1 is not less than 45% of the upper limit of the stress of the cable, in order to ensure that the maximum tension applied during the test does not exceed the safety limit of the cable design.

[0025] The lower limit of the axial tension value L2 is not less than 20% of the upper limit of the cable stress. This lower limit ensures that the cable is subjected to a certain tension even in the unloading stage, so that the test system can simulate the lowest stress state in actual work.

[0026] The length of time that the axial tension upper limit L1 needs to be maintained after it is reached to ensure that the performance of the inclined cable under the maximum stress state can be fully evaluated.

[0027] The length of time required to maintain the axial tension after it is reduced to the lower limit L2 is used to evaluate the performance of the inclined cable under a lower stress state for the same purpose.

[0028] This process needs to be repeated no less than 10 times to ensure that the test system can simulate the performance of the cable under long-term cyclic loading.

[0029] S6. Collect the axial tension according to the set tension collection cycle 1, obtain multiple first load values, and feed them back to the control terminal. The specific steps are as follows: Get the startup status of the axial stretching device; according to the preset acquisition frequency Collecting the data of the axial tension sensor, obtaining the tensile force value of the axial tension device, that is, the first load value, and transmitting the first load value to the control terminal; wherein, , that is to say, data is collected at least twice in each tension collection cycle.

[0030] S7, according to the preset second cycle number, control the transverse stretching device to cyclically apply transverse tension to the inclined cable, the specific steps are as follows: Get real-time water temperature T S , if T S =T b ±3℃, the preset second cycle number is obtained, and the transverse stretching device is controlled to apply transverse tension to the inclined cable to reach the set second cycle number When the transverse stretching device stops stretching, the second cycle number is the number of times from applying the transverse tension to the upper limit of the transverse tension and then unloading to 0; Hz; Start the heating device to heat the colored water; Get real-time water temperature T S , if T S =T t ±3℃, where T t Indicates the preset upper limit of water temperature; then obtain the preset second cycle number, control the transverse tension device to apply transverse tension to the inclined cable, and reach the set second cycle number When , stop the stretching action of the transverse stretching device.

[0031] This step is to test the water tightness of the cable at different temperatures; the water temperature for the test is usually selected at both ends of the water temperature range, that is, the lower limit and the upper limit of the water temperature.

[0032] S8. Collect the lateral tension according to the set tension collection, obtain multiple second load values, and feed them back to the control terminal. The specific steps are as follows: Obtaining the start-up status of the transverse stretching device; According to the preset collection frequency Collect the data of the transverse tension sensor, obtain the tensile force value of the transverse stretching device, that is, the second load value, and transmit the second load value to the control terminal; wherein, .

[0033] S9. Monitor the first load value, the second load value and the water temperature through the control terminal, and alarm when the first load value, the second load value and the water temperature are abnormal.

[0034] The present invention also provides a stay cable watertight detection control system, comprising a control terminal, a temperature sensor, a water level sensor, a lateral tension sensor, an axial tension sensor and a plurality of position switches, for executing the stay cable watertight detection control method; Among them, the control terminal is used to receive data transmitted by the temperature sensor, water level sensor, lateral tension sensor, axial tension sensor and position switch, and send control instructions and alarm signals to the lateral stretching device and axial stretching device; in this embodiment, the control terminal can use an existing industrial computer.

[0035] The temperature sensor is used to collect temperature data of colored water, and the water level sensor is used to collect liquid level data of colored water; the transverse stretching sensor is used to detect the transverse stretching force. The transverse stretching device and the axial stretching device described in this embodiment can both use existing hydraulic jacks. The transverse tension sensor and the axial tension sensor can select corresponding models of pressure sensors as needed.

[0036] The axial tensile sensor is used to collect the axial tensile force with an accuracy of 1kN; the position switch is used to measure the transverse angle offset data of the inclined cable. The axial displacement is measured by the axial displacement sensor with a measurement range of 0 to 500mm and an accuracy of 0.1%.

[0037] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the aforementioned method for controlling watertightness detection of a stay cable.

[0038] The embodiments disclosed in the present invention, the process described above with reference to the flowchart can be implemented as a computer software program. The embodiments disclosed in the present invention include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part, and / or installed from a removable medium. When the computer program is executed by the central processing unit (CPU), the above-mentioned functions defined in the method of the present application are executed. It should be noted that the above-mentioned computer-readable medium of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, but not limited to, a system, device or device of an electrical, magnetic, optical, electromagnetic, infrared segment, or semiconductor, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to, an electrical connection with one or more wire segments, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In the present application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code embodied on the computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, electrical wire, optical cable, RF, etc., or any suitable combination of the foregoing.

[0039] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present invention. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0040] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the implementation methods of the present invention may be deformed or modified in any way.

Claims

1. A method for controlling watertightness detection of a stay cable, characterized in that: The method comprises: S1. Obtain the real-time water temperature of the colored water and compare it with the preset water temperature threshold; S2, obtaining liquid level information and comparing it with a preset liquid level threshold; S3, judging whether the water temperature and liquid level meet the preset conditions, if so, proceeding to the next step; if not, issuing a water injection and heating request message, and proceeding to step S1; S4, obtaining the heating status of the heating device and maintaining the current water temperature; S5, controlling the axial tensioning device to cyclically apply axial tension to the inclined cable according to a preset number of first cycle periods; S6. Collect the axial tension according to the set tension collection cycle 1, obtain multiple first load values, and feed them back to the control terminal; S7, controlling the transverse stretching device to cyclically apply transverse tension to the inclined cable according to a preset second cycle number; S8, collecting the lateral tension according to the set tension collection method, obtaining multiple second load values, and feeding back the values ​​to the control terminal; S9. Monitor the first load value, the second load value and the water temperature through the control terminal, and alarm when the first load value, the second load value and the water temperature are abnormal.

2. A stay cable watertight detection control method according to claim 1, characterized in that: The determination of whether the water temperature and the liquid level meet the preset conditions includes: The water temperature T S The preset water temperature lower limit T b Compare, if |T S -T b |≤3℃, the water temperature is normal; The obtained liquid level H s The preset lower limit of liquid level H b Compare, if |H S -H b |≤1cm, the liquid level is normal.

3. A stay cable watertight detection control method according to claim 2, characterized in that: The step of obtaining the heating state of the heating device and maintaining the current water temperature includes: Check whether the heating device is turned on; If the heating device is not started and the water temperature T S If normal, keep the current working status; If the heating device is turned on and the water temperature T S If it is normal, stop heating, and collect temperature data from the temperature sensor according to the set collection cycle and send it to the control terminal.

4. A stay cable watertight detection control method according to claim 3, characterized in that: The method of controlling the axial tension device to cyclically apply axial tension to the stay cable according to a preset first cycle number includes: Obtaining an upper limit L1 of the axial tension value, wherein L1 is not less than 45% of an upper limit value of the stress of the inclined cable; Obtaining a lower limit L2 of the axial tension value, wherein L2 is not less than 20% of an upper limit value of the inclined cable stress; Get the upper limit holding time T L1 And the lower limit is maintained for a period of time T L2 ; Get the first cycle number The first cycle number is the number of times from applying axial tension to L1 and then unloading to L2. ≥10; The control terminal sets the first cycle number, the upper limit L1 of the axial tension value, and the lower limit L2 of the axial tension value, and maintains the duration T L1 And the lower limit is maintained for a period of time T L2 , control the axial stretching device to axially stretch the inclined cable.

5. A stay cable watertight detection control method according to claim 4, characterized in that: The step of collecting the axial tension according to the set tension collection cycle 1, obtaining a plurality of first load values, and feeding back the values ​​to the control terminal includes: Obtain the start-up status of the axial stretching device; According to the preset collection frequency Collecting the data of the axial tension sensor, obtaining the tensile force value of the axial tension device, that is, the first load value, and transmitting the first load value to the control terminal; wherein, .

6. A stay cable watertight detection control method according to claim 3, characterized in that: The method of controlling the transverse stretching device to cyclically apply transverse tension to the stay cable according to the preset second cycle number includes: Get real-time water temperature T S , if T S =T b ±3℃, the preset second cycle number is obtained, and the transverse stretching device is controlled to apply transverse tension to the inclined cable to reach the set second cycle number When the transverse stretching device stops stretching, the second cycle number is the number of times from applying the transverse tension to the upper limit of the transverse tension and then unloading to 0; Hz; Start the heating device to heat the colored water; Get real-time water temperature T S , if T S =T t ±3℃, where T t Indicates the preset upper limit of water temperature; then obtain the preset second cycle number, control the transverse tension device to apply transverse tension to the inclined cable, and reach the set second cycle number When , stop the stretching action of the transverse stretching device.

7. A stay cable watertight detection control method according to claim 6, characterized in that: The method of collecting the lateral tension according to the set tension collection method, obtaining a plurality of second load values, and feeding back the values ​​to the control terminal includes: Obtaining the start-up status of the transverse stretching device; According to the preset collection frequency Collect the data of the transverse tension sensor, obtain the tensile force value of the transverse stretching device, that is, the second load value, and transmit the second load value to the control terminal; wherein, .

8. A stay cable watertight detection control method according to claim 5, characterized in that: The method of monitoring the first load value, the second load value and the real-time water temperature through the control terminal and giving an alarm when the first load value, the second load value and the water temperature are abnormal includes: The first load value obtained is compared with the upper limit L1 of the axial tension value, and the second load value obtained is compared with the upper limit L0 of the lateral tension value. If the first load value is greater than L1 and the second load value is greater than the upper limit L0, an overload alarm is issued, and the axial stretching device or the lateral stretching device is controlled to stop stretching; After the time interval t, data is collected again from the axial tensile sensor or the transverse tensile sensor. If the first load value and the second load value still do not decrease, a shutdown alarm is issued to notify the on-site staff to intervene. The real-time water temperature T S With T t Compare, if T S >T t +6℃, a high temperature alarm is sent and the heating device is controlled to stop heating; After a time interval t1, data is collected from the temperature sensor again. If the real-time water temperature still does not drop, a shutdown alarm is issued to notify on-site staff to intervene.

9. A stay cable watertightness detection control system, the system is used to execute a stay cable watertightness detection control method according to any one of claims 1 to 8, characterized in that: It includes a control terminal, a temperature sensor, a water level sensor, a transverse tension sensor, an axial tension sensor, a transverse stretching device, an axial stretching device and several position switches; The control terminal is used to receive data transmitted by the temperature sensor, the water level sensor, the transverse tension sensor, the axial tension sensor and the position switch, and to send control instructions and alarm signals to the transverse stretching device and the axial stretching device; The temperature sensor is used to collect temperature data of colored water, and the water level sensor is used to collect liquid level data of colored water; the transverse tensile sensor is used to detect transverse tensile force; the axial tensile sensor is used to collect axial tensile force; and the position switch is used for transverse angle offset data of the inclined cable.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement a watertight detection and control method for a stay cable as described in any one of claims 1 to 8.

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