A method for adjusting the retest of the cable force of a suspender based on an intelligent tensioning system
By optimizing the adjustment sequence of the suspender cable force using the finite element model and sensitivity value sorting of the intelligent tensioning system, the problem of high trial-and-error costs and wasted time caused by blind adjustment in traditional adjustment methods is solved, and efficient and precise adjustment of the suspender cable force is achieved.
Patent Information
- Application Number
- CN202510982429.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-16
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2045-07-16
AI Technical Summary
During the retesting and adjustment of the suspenders, the traditional method of blindly adjusting them leads to unpredictable effects on the cable forces of other suspenders, resulting in high trial-and-error costs and significant time waste.
A finite element model was established using an intelligent tensioning system. By calculating the sensitivity values of the suspension rods and ranking them, the optimal adjustment sequence was determined. The model was then used to simulate and optimize the adjustment path, reducing the number of actual trial and error attempts.
It achieves the global optimal effect of boom cable tension adjustment, reduces trial and error costs and time, and improves adjustment efficiency and accuracy.
Smart Images
Figure CN120470873B_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of bridge construction, and in particular to a method for re-measurement and adjustment of hanger cable force based on an intelligent tensioning system. Background Art
[0002] Bridge hangers are crucial connecting and supporting components in bridge structures. As important force-transmitting components, precise control of their cable tension is directly related to the overall force balance, structural stability, and long-term service performance of the bridge. After all hangers are installed, they are retested. However, traditional hanger retesting and adjustment methods have the following drawbacks:
[0003] The boom system is a statically indeterminate structure. Any local adjustment will be transmitted to other parts through the structural stiffness, triggering a response in the entire system. During the retest process, the traditional adjustment sequence is usually carried out in sequence according to the spatial position or number of the boom. Blindly adjusting the tension of the boom that does not meet the tension standard will have an unpredictable impact on the tension of other booms. The randomness leads to poor results in actual tests. In addition, the traditional method requires actual testing for each adjustment, and the time cost of trial and error is high, resulting in a long cycle. Summary of the Invention
[0004] An embodiment of the present application provides a method for re-measurement and adjustment of the cable tension of a boom based on an intelligent tensioning system to solve the problem in the related art that during the re-measurement and adjustment of the cable tension of the boom, blind adjustment is performed using actual tests, resulting in unpredictable effects on the cable tension of other booms, high trial and error costs, and a waste of a lot of time.
[0005] In a first aspect, a method for re-measurement and adjustment of suspender cable force based on an intelligent tensioning system is provided, comprising:
[0006] S1. After all the suspenders are installed, obtain the actual cable forces of all the suspenders;
[0007] S2. Using the intelligent tensioning system to establish a finite element model of the plurality of hangers, and then numbering the hangers of the finite element model;
[0008] S3. For the target-numbered boom, the test correction amount and the actual cable force corresponding to the target-numbered boom are input into the finite element model to calculate the first sensitivity value of the boom. According to this step, the first sensitivity value of each boom corresponding to the target number is calculated. The first sensitivity value is the sum of the squares of the standard cable force deviations of the remaining booms after adjusting the target-numbered boom.
[0009] S4. Sort by the first sensitivity value from high to low; then sort all the booms according to the first sensitivity value from high to low to obtain the optimal adjustment sequence for boom cable force adjustment; and actually adjust the booms according to the optimal adjustment sequence.
[0010] In some embodiments, the actual adjustment of the boom is performed according to the optimal adjustment sequence, which includes the steps of confirming the acquisition of the cable force:
[0011] S41, obtaining a standard cable force range of a boom with a target number;
[0012] S42: Using each value within the standard cable force range as a test cable force of a target-numbered boom, and sequentially inputting the values into a finite element model to calculate a second sensitivity value corresponding to each test cable force, where the second sensitivity value is the sum of squared deviations of the standard cable forces of the remaining booms after adjusting the target-numbered boom;
[0013] S43, selecting a minimum value from the plurality of second sensitive values, using the test cable force corresponding to the minimum value as the confirmed cable force of the target numbered boom; and performing actual adjustment according to the confirmed cable force;
[0014] S44. Adjust the other numbered booms according to S41-S43.
[0015] In some embodiments, actual adjustments are made to the booms according to the optimal adjustment order. After the tension adjustment of each boom with a target number is completed, the confirmed tension of the boom with the target number that has not undergone tension adjustment is updated according to the steps for obtaining the confirmed tension, so as to continue actual adjustments to the boom with the target number that has not undergone tension adjustment.
[0016] In some embodiments, obtaining the actual cable forces of all the suspenders includes the following steps:
[0017] Tensioning force is applied to the booms through an intelligent tensioning system, and vibration signals of the booms are collected in real time through acceleration sensors installed on each boom. Based on the real-time collected vibration signals of the booms, cable force data of all booms are calculated.
[0018] In some embodiments, the acceleration sensor on the boom obtains a vibration signal with a frequency range within a first target range; the vibration signal within the first standard cutoff frequency is low-pass filtered, and the first three natural frequencies are extracted, and based on the correlation equation between frequency and cable force, the cable force data of all booms are calculated in real time.
[0019] In some embodiments, after all boom adjustments are completed, a first boom protection step is further included, which includes the following steps:
[0020] After completing the cable tension adjustment of each boom, anti-corrosion grease is poured into the anchor end of the boom and a multi-layer sealing protective cover is installed. The protective cover includes an inner butyl rubber protective layer and an outer stainless steel cover body.
[0021] In some embodiments, the method of injecting anti-corrosion grease into the anchor end of the boom and installing a multi-layer sealing protective cover comprises the following steps:
[0022] The injection pressure of the anti-corrosion grease is set to a first set value, and after injection, the protective cover is closed and a pre-tightening force of a second set value is applied.
[0023] In some embodiments, after all boom adjustments are completed, a second boom protection step is further included, which includes the following steps:
[0024] After completing the cable tension adjustment of each boom, check whether the outer protective layer of the boom is damaged. If damaged, perform hot-melt welding of the PE pipe to complete the repair.
[0025] In some embodiments, the intelligent tensioning system includes an information acquisition module, an information processing module and a cable force adjustment module; the information acquisition module is used to obtain the actual cable force of each hanger in real time; the information processing module is used to establish a finite element model of multiple hangers, and then number the hangers in the finite element model, calculate the first sensitivity value of each hanger, and sort them from high to low according to the first sensitivity value; then sort all the hangers according to the first sensitivity value from high to low; the cable force adjustment module actually adjusts the hangers according to the optimal adjustment order.
[0026] In some embodiments, the intelligent tensioning system further includes a fault detection module. During the boom tensioning process, when abnormal boom cable tension is detected, the intelligent tensioning system suspends the current tensioning process and sends an alarm signal to the operator.
[0027] The beneficial effects of the technical solutions provided in the embodiments of the present application include:
[0028] The embodiment of the present application provides a method for retesting and adjusting the cable tension of a boom based on an intelligent tensioning system, wherein a finite element model is constructed based on the actual cable tension of the boom collected in real time, and the disturbance intensity of the adjustment of a single boom on the overall cable tension network is quantified, that is, by injecting different adjustment amounts into the corresponding boom cable tension parameters of the finite element model, the global cable tension fluctuation amplitude caused by the adjustment of each boom is calculated, that is, the sum of the squares of the standard cable tension deviations of the remaining booms, and sorted from high to low according to the fluctuation amplitude, that is, the global fluctuation caused by adjusting the boom is sorted from large to small; the adjustment is made in descending order according to the first sensitive value, so that each adjustment can minimize the overall deviation to the greatest extent, avoiding the redundant operation of repeated correction of the traditional method, using model simulation, and calculating the optimal sequence and correction amount before adjustment to reduce the actual number of trial and error. By quantifying the disturbance intensity and sorting the sensitivity values by the finite element model, the adjustment path is optimized to avoid blind adjustment, achieve one-time sorting, and achieve the technical effect of global optimization, which solves the problem that in the process of retesting and adjusting the boom cable tension in the related technology, blind adjustment is made by actual testing, which has unpredictable effects on the cable tension of other booms, high trial and error costs, and wastes a lot of time. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1A flow chart of a method for re-measurement and adjustment of the hanger cable force based on an intelligent tensioning system provided in an embodiment of the present application. DETAILED DESCRIPTION
[0030] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0031] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.
[0032] In the first aspect, the embodiment of the present application provides a method for retesting and adjusting the suspension cable force based on an intelligent tensioning system, referring to Figure 1 , Figure 1 This is a flow chart of the method for retesting and adjusting the suspension cable force based on the intelligent tensioning system provided in the embodiment of the present application. Figure 1 As shown in FIG, the hanger cable force re-measurement and adjustment method based on the intelligent tensioning system includes:
[0033] S1. After all the suspenders are installed, obtain the actual cable forces of all the suspenders;
[0034] S2. Using the intelligent tensioning system to establish a finite element model of the plurality of hangers, and then numbering the hangers of the finite element model;
[0035] S3. For the target-numbered boom, the test correction amount and the actual cable force corresponding to the target-numbered boom are input into the finite element model to calculate the first sensitivity value of the boom. According to this step, the first sensitivity value of each boom corresponding to the target number is calculated. The first sensitivity value is the sum of the squares of the standard cable force deviations of the remaining booms after adjusting the target-numbered boom.
[0036] S4. Sort by the first sensitivity value from high to low; then sort all the booms according to the first sensitivity value from high to low to obtain the optimal adjustment sequence for boom cable force adjustment; and actually adjust the booms according to the optimal adjustment sequence.
[0037] In this embodiment, a finite element model is constructed based on the actual cable tension of the suspender collected in real time, and the disturbance intensity of the adjustment of a single suspender on the overall cable tension network is quantified, that is, by injecting different adjustment amounts into the corresponding suspender cable tension parameters of the finite element model, the global cable tension fluctuation amplitude caused by the adjustment of each suspender is calculated, that is, the sum of the squares of the standard cable tension deviations of the remaining suspenders, and sorted from high to low according to the fluctuation amplitude, that is, the global fluctuation caused by adjusting the suspender is sorted from large to small; the first sensitive value is adjusted in descending order so that each adjustment can minimize the overall deviation to the greatest extent, avoiding the redundant operation of repeated correction of traditional methods, using model simulation, and calculating the optimal sequence and correction amount before adjustment to reduce the actual number of trial and error. By quantifying the disturbance intensity and sorting the sensitivity values by the finite element model, the adjustment path is optimized to avoid blind adjustment, achieve a one-time sorting, and achieve the technical effect of global optimization, which solves the problem that in the process of repeated measurement and adjustment of the suspender cable tension in the related technology, blind adjustment is performed by actual testing, which has unpredictable effects on the cable tension of other suspenders, high trial and error costs, and wastes a lot of time.
[0038] Furthermore, in one embodiment, the actual adjustment of the boom is performed according to the optimal adjustment sequence, which includes the step of confirming the acquisition of the cable force:
[0039] S41, obtaining a standard cable force range of a boom with a target number;
[0040] S42: Using each value within the standard cable force range as a test cable force of a target-numbered boom, and sequentially inputting the values into a finite element model to calculate a second sensitivity value corresponding to each test cable force, where the second sensitivity value is the sum of squared deviations of the standard cable forces of the remaining booms after adjusting the target-numbered boom;
[0041] S43, selecting a minimum value from the plurality of second sensitive values, using the test cable force corresponding to the minimum value as the confirmed cable force of the target numbered boom; and performing actual adjustment according to the confirmed cable force;
[0042] S44. Follow the above steps to adjust the booms with other numbers.
[0043] In this embodiment, when adjusting the target boom according to the optimal adjustment sequence, it is necessary to obtain its standard cable tension range. Each value within this range is input into the finite element model as a test cable tension. The second sensitivity value corresponding to each test cable tension is calculated, which is the sum of the squared deviations of the standard cables of the remaining booms. Ultimately, the test cable tension with the smallest second sensitivity value is selected as the actual adjustment amount. In traditional adjustment, the adjustment amount is only selected so that the cable tension of the boom meets its own design requirements, which may lead to large fluctuations in the cable tension of other booms after adjustment. In addition, the difference in the impact of different adjustment amounts on the overall situation is not quantified, resulting in a high trial-and-error cost. By simulating the disturbance of different test cables on the system through the finite element model, the adjustment amount that minimizes the sum of the squared deviations of the remaining booms is selected, ensuring that a single adjustment has the smallest overall impact and avoiding the chain imbalance of global cable tension caused by local adjustments. Combined with the standard cable tension range restriction, this method not only ensures that the adjusted cable tension of the target boom meets the design requirements, but also selects the optimal correction amount through the second sensitivity value, thus solving the blindness of empirical adjustment. Compared with the traditional trial-and-error method that requires multiple actual loading tests, this method directly locks in the optimal adjustment amount through model prediction, reducing the number of actual adjustments and shortening the construction period.
[0044] Furthermore, in one embodiment, the actual adjustment of the boom is performed according to the optimal adjustment order. After the tension adjustment of each boom with a target number is completed, the confirmed tension of the boom with the target number that has not been adjusted is updated according to the steps for obtaining the confirmed tension, so as to continue to perform actual adjustment on the boom with the target number that has not been adjusted.
[0045] In this embodiment, it is stipulated that when the booms are adjusted in the optimal order, after each adjustment of a boom is completed, the second sensitive values of the remaining booms need to be recalculated and the confirmed cable forces need to be updated to form a dynamic optimization process; the boom system is a hyperstatic structure, and after adjusting a boom, the coupling relationship between the remaining booms will change, and the original confirmed cable forces may be inaccurate and cannot achieve the optimal effect; by updating the second sensitive value in real time and obtaining the confirmed cable forces thereby, the system state changes during the adjustment process can be adapted to ensure that each adjustment is based on the current optimal cable force, avoiding the limitations of fixed confirmed cable forces; the second sensitive value is recalculated after each adjustment to quickly approach the target cable force distribution and reduce the total number of adjustments; even if there is an error in the initial calculation of the first sensitive value, the dynamic update mechanism can correct the deviation in subsequent steps to improve the robustness of the adjustment.
[0046] Furthermore, in one embodiment, obtaining the actual cable forces of all the suspenders includes the following steps:
[0047] S11. Apply tensioning force to the suspenders through the intelligent tensioning system, and collect vibration signals of the suspenders in real time through acceleration sensors installed on each suspender, and calculate the cable force data of all suspenders based on the real-time collected vibration signals of the suspenders.
[0048] In this embodiment, tensioning force is applied through an intelligent tensioning system, combined with accelerometers to collect boom vibration signals in real time to calculate cable force data. Specifically, during the tensioning process, accelerometers are installed on each boom. By capturing vibration signals, the cable force is calculated in real time based on the physical relationship between vibration response and cable force, such as string vibration theory. This dynamic feedback mechanism, which collects vibration signals in real time and simultaneously calculates cable force, solves the problem of multi-dimensional errors during boom construction, such as tensioning equipment errors and the difficulty of continuously monitoring force transmission between booms.
[0049] Furthermore, in one embodiment, the acceleration sensor on the boom obtains a vibration signal with a frequency range within a first target range; the vibration signal within the first standard cutoff frequency is low-pass filtered, and the first three natural frequencies are extracted, and based on the correlation equation between frequency and cable force, the cable force data of all booms are calculated in real time.
[0050] In this embodiment, the acquisition frequency range of the vibration signal is further limited to 0.1-100 Hz, and the subsequent processing method is as follows: the vibration signal is low-pass filtered with a cutoff frequency of 80 Hz, the first three natural frequencies are extracted, and the actual cable tension is calculated based on the frequency-cable tension equation. There are high-frequency interference sources in the bridge environment, such as mechanical vibration and traffic load. Traditional vibration measurement methods are prone to introducing high-order harmonic noise, resulting in frequency identification deviation; among them, 0.1-100 Hz covers the main low-order modes of the steel strand hanger, excluding irrelevant ultra-low frequencies such as overall structural vibration, and ultra-high frequencies such as noise signals. The 80 Hz cutoff frequency effectively filters out high-frequency interference, such as electromagnetic noise from the motor, while retaining the complete waveforms of the first three modes; the selection of the first three frequencies avoids the weak energy of the high-order modes and susceptibility to insufficient environmental excitation, thereby improving the signal-to-noise ratio.
[0051] Furthermore, in one embodiment, after all the boom adjustments are completed, a first protection for the boom is also included, which includes the following steps: after completing the cable tension adjustment of each boom, injecting anti-corrosion grease into the anchor end of the boom and installing a multi-layer sealing protective cover, wherein the protective cover includes an inner butyl rubber protective layer and an outer stainless steel cover body.
[0052] In this embodiment, the boom protection steps are defined, including pouring anti-corrosion grease into the anchoring end and installing a multi-layer sealing protective cover; this can solve the problems of poor sealing of the traditional boom protective layer, which is easily corroded by moisture and salt spray, leading to rust of the anchor head and shortening the service life; the butyl rubber layer provides a flexible seal to adapt to the micro-deformation of the boom; the stainless steel cover body resists mechanical impact and corrosive media, extending the protection period; the pouring process ensures that grease fills the gaps in the anchor head, blocks the contact between oxygen and moisture, and inhibits corrosion, and the split structure of the protective cover facilitates construction and maintenance, reducing the cost of later replacement. In view of the problem that the traditional protective layer is prone to aging and damage, the convenience of boom maintenance is significantly improved through material composite and structural innovation.
[0053] Furthermore, in one embodiment, anti-corrosion grease is poured into the anchor end of the boom and a multi-layer sealing protective cover is installed, which includes the following steps: setting the pouring pressure of the anti-corrosion grease to a first set value, sealing the protective cover after pouring and applying a pre-tightening force of a second set value.
[0054] In this embodiment, the injection pressure of the anti-corrosion grease is limited to 0.2-0.5MPa. After injection, the protective cover is sealed and a pre-tightening force of 3-5MPa is applied. Among them, the pressure of 0.2-0.5MPa ensures that the grease penetrates into the tiny pores to form an anti-corrosion layer without dead angles. The pre-tightening force of 3-5MPa makes the protective cover fit tightly to the surface of the boom to prevent the intrusion of external media. That is, the pressure and pre-tightening force range are quantified, which can avoid the arbitrariness of manual operation and ensure the quality of protection. It solves the problem of fuzzy parameters in traditional injection process, and realizes the reliability and long-term effectiveness of the anti-corrosion layer through precise control of pressure and pre-tightening force.
[0055] Furthermore, in one embodiment, after all the boom adjustments are completed, a second protection for the boom is also included, which includes the following steps: after completing the cable tension adjustment of each boom, check whether the outer protective layer of the boom is damaged. If damaged, perform hot-melt welding of the PE pipe to complete the repair.
[0056] In this example, cracks in the plastic coating on the steel pipe are patched with PE pipe using hot-melt welding. This prevents rainwater, deicing salt, and other corrosive liquids from penetrating, preventing rust and rotting at the cracked surface. Hot-melt welding is more durable than traditional methods like applying tape or waterproofing paint, fusing the patch to the original protective layer and preventing warping and leaks within two years. If small cracks are left untreated, they could rust through the iron poles over time, necessitating complete replacement of the booms, road closures, and even bridge demolition. Promptly repairing the protective layer extends the bridge's service life.
[0057] Furthermore, in one embodiment, the intelligent tensioning system includes an information acquisition module, an information processing module and a cable force adjustment module; the information acquisition module is used to obtain the actual cable force of each hanger in real time; the information processing module is used to establish a finite element model of multiple hangers, and then number the hangers of the finite element model, calculate the first sensitivity value of each hanger, and sort them from high to low according to the first sensitivity value; then all hangers are sorted from high to low according to the first sensitivity value; the cable force adjustment module actually adjusts the hangers according to the optimal adjustment order.
[0058] In this embodiment, a finite element model is constructed based on the actual cable tension of the suspender collected in real time, and the disturbance intensity of the adjustment of a single suspender on the overall cable tension network is quantified, that is, by injecting different adjustment amounts into the corresponding suspender cable tension parameters of the finite element model, the global cable tension fluctuation amplitude caused by the adjustment of each suspender is calculated, that is, the sum of the squares of the standard cable tension deviations of the remaining suspenders, and sorted from high to low according to the fluctuation amplitude, that is, the global fluctuation caused by adjusting the suspender is sorted from large to small; the first sensitive value is adjusted in descending order so that each adjustment can minimize the overall deviation to the greatest extent, avoiding the redundant operation of repeated correction of traditional methods, using model simulation, and calculating the optimal sequence and correction amount before adjustment to reduce the actual number of trial and error. By quantifying the disturbance intensity and sorting the sensitivity values by the finite element model, the adjustment path is optimized to avoid blind adjustment, achieve a one-time sorting, and achieve the technical effect of global optimization, which solves the problem that in the process of repeated measurement and adjustment of the suspender cable tension in the related technology, blind adjustment is performed by actual testing, which has unpredictable effects on the cable tension of other suspenders, high trial and error costs, and wastes a lot of time.
[0059] Furthermore, in one embodiment, the intelligent tensioning system also includes a fault detection module. During the boom tensioning process, when abnormal boom cable tension is detected, the intelligent tensioning system suspends the current tensioning process and sends an alarm signal to the operator.
[0060] In this embodiment, the intelligent tensioning system is limited to be equipped with a fault detection module. When abnormal cable tension is detected, the tensioning is suspended, the redundant hydraulic circuit is started to maintain the cable tension, and an alarm and emergency instructions are sent. Among them, abnormal fluctuations trigger automatic suspension to prevent the fault from expanding. The redundant hydraulic circuit maintains the cable tension stability when the main line fails, buying time for manual intervention. The alarm signal and the repair plan are pushed synchronously, shortening the fault handling cycle and reducing downtime losses. The problem of low fault tolerance of traditional systems is solved, and construction safety is improved through a multi-level fault response mechanism.
[0061] That is, in this application, the problem of deviation between the actual cable tension of each hanger and the design value after the construction of all hangers in the related technology is first solved. Subsequently, focusing on the installation, adjustment, monitoring and maintenance of the intelligent tensioning system, the problems of insufficient precision, low efficiency and delayed maintenance in traditional hanger construction are systematically solved, which significantly improves the quality and life of the bridge project.
[0062] The beneficial effects brought about by this application include:
[0063] A method for integrated boom measurement and control construction based on an intelligent tensioning system is provided. A finite element model is constructed based on the actual boom tension collected in real time to quantify the disturbance intensity of a single boom adjustment on the overall tension network. This is done by injecting different adjustment values into the corresponding boom tension parameters of the finite element model. The global tension fluctuation amplitude caused by each boom adjustment, i.e., the sum of the squared standard tension deviations of the remaining booms, is calculated and sorted from high to low by fluctuation amplitude. This means that the global fluctuations caused by adjusting the boom are sorted from large to small. Adjustments are made sequentially in descending order of sensitivity, so that each adjustment can minimize the overall deviation and avoid redundant operations such as repeated corrections in traditional methods. Model simulation is used to calculate the optimal sequence and correction amount before adjustment, reducing the number of actual trial and error attempts. By quantifying the disturbance intensity using the finite element model and sorting the sensitivity values, the adjustment path is optimized, avoiding blind adjustments and achieving a one-time, global optimal technical effect. This solves the problem in related technologies of blindly adjusting the boom tension using actual tests during repeated measurement and adjustment, resulting in unpredictable effects on the tensions of other booms, high trial and error costs, and significant time wasted.
[0064] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.
[0065] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit the "first", "second" and "third" to different types.
[0066] In the description of the embodiments of this application, the words "exemplary," "for example," or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary," "for example," or "for example" in the embodiments of this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary," "for example," or "for example" is intended to present the relevant concepts in a concrete manner.
[0067] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.
[0068] In some processes described in the embodiments of the present application, multiple operations or steps are included that appear in a specific order. However, it should be understood that these operations or steps may not be performed in the order in which they appear in the embodiments of the present application or may be performed in parallel. The sequence numbers of the operations are only used to distinguish between different operations, and the sequence numbers themselves do not represent any order of execution. In addition, these processes may include more or fewer operations, and these operations or steps may be performed in sequence or in parallel, and these operations or steps may be combined.
[0069] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, or the part that contributes to the existing technology, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above and includes a number of instructions for enabling a terminal device to execute the methods described in each embodiment of this application.
[0070] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A method for re-measurement and adjustment of suspender cable force based on an intelligent tensioning system, characterized in that: It includes: After all the booms are installed, obtain the actual cable forces of all the booms; Using the intelligent tensioning system to establish a finite element model of multiple hangers, and then numbering the hangers in the finite element model; For the boom with the target number, the test correction amount and the actual cable force corresponding to the boom with the target number are input into the finite element model to calculate the first sensitivity value of the boom; According to this step, calculate the first sensitivity value of the boom corresponding to each number; The first sensitive value is the sum of squares of standard cable force deviations of the remaining booms after adjusting the boom with the target number; Sorting the first sensitivity values from high to low; then sorting all the booms according to the first sensitivity values from high to low to obtain an optimal adjustment sequence for adjusting the boom cable forces; and actually adjusting the booms according to the optimal adjustment sequence, which includes the following steps: obtaining a standard cable force interval for the boom with a target number; Each value within the standard cable force range is used as the test cable force of the target-numbered boom, and then sequentially input into the finite element model to calculate the second sensitivity value corresponding to each test cable force, wherein the second sensitivity value is the sum of squares of the standard cable force deviations of the remaining booms after adjusting the target-numbered boom; Selecting a minimum value from the plurality of second sensitive values, and using the test cable force corresponding to the minimum value as the confirmed cable force of the target numbered boom; Make actual adjustments according to the confirmed cable force; According to the above steps, the booms of other numbers are adjusted; wherein, the booms are actually adjusted according to the optimal adjustment order. After the tension adjustment of each boom of a target number is completed, the confirmed tension of the boom of the target number that has not been adjusted is updated according to the steps for obtaining the confirmed tension, so as to continue to perform actual adjustments on the boom of the target number that has not been adjusted.
2. The method for re-measurement and adjustment of the suspension cable force based on the intelligent tensioning system according to claim 1, characterized in that: Obtaining the actual cable tension of all booms includes the following steps: Tensioning force is applied to the booms through an intelligent tensioning system, and vibration signals of the booms are collected in real time through acceleration sensors installed on each boom. Based on the real-time collected vibration signals of the booms, cable force data of all booms are calculated.
3. The method for re-measurement and adjustment of suspender cable force based on an intelligent tensioning system according to claim 2, characterized in that: The acceleration sensor on the boom acquires a vibration signal with a frequency range within a first target range; The vibration signal within the first standard cutoff frequency is low-pass filtered, and the first three natural frequencies are extracted. Based on the correlation equation between frequency and cable force, the cable force data of all booms are calculated in real time.
4. The method for retesting and adjusting the suspender cable force based on the intelligent tensioning system according to claim 1, characterized in that: After all boom adjustments are completed, the first boom protection step is also included, which includes the following steps: After completing the cable tension adjustment of each boom, anti-corrosion grease is poured into the anchor end of the boom and a multi-layer sealing protective cover is installed. The protective cover includes an inner butyl rubber protective layer and an outer stainless steel cover body.
5. The method for re-measurement and adjustment of the suspension cable force based on the intelligent tensioning system according to claim 4, characterized in that: The process of injecting anti-corrosion grease into the anchor end of the boom and installing a multi-layer sealing protective cover includes the following steps: The injection pressure of the anti-corrosion grease is set to a first set value, and after injection, the protective cover is closed and a pre-tightening force of a second set value is applied.
6. The method for retesting and adjusting the suspension rod cable force based on the intelligent tensioning system according to claim 1, characterized in that: After all boom adjustments are completed, the second boom protection is also included, which includes the following steps: After completing the cable tension adjustment of each boom, check whether the outer protective layer of the boom is damaged. If damaged, perform hot-melt welding of the PE pipe to complete the repair.
7. The method for re-measurement and adjustment of suspender cable force based on an intelligent tensioning system according to claim 1, characterized in that: The intelligent tensioning system includes an information acquisition module, an information processing module and a cable force adjustment module; The information acquisition module is used to obtain the actual cable force of each boom in real time; The information processing module is used to establish a finite element model of multiple booms, then number the booms in the finite element model, calculate the first sensitivity value of each boom, and sort the booms from high to low according to the first sensitivity value; then sort all the booms according to the first sensitivity value from high to low; The cable force adjustment module actually adjusts the boom according to the optimal adjustment sequence.
8. The method for re-measurement and adjustment of suspender cable force based on an intelligent tensioning system according to claim 1, characterized in that: The intelligent tensioning system also includes a fault detection module. During the tensioning process of the boom, when abnormal boom cable force is detected, the intelligent tensioning system suspends the current tensioning process and sends an alarm signal to the operator.