Cable-stayed and buckled multi-cable synchronous regulation and control method and system based on hydraulic cooperation

Abstract

The invention discloses a cable-stayed and buckled multi-cable synchronous regulation and control method and system based on hydraulic cooperation, and the method comprises the steps: obtaining the information of each cable, configuring a hydraulic device for each cable, grading and dividing the tensioning operation of the hydraulic devices into a plurality of tensioning levels, distributing a sub-target tensioning force for each tensioning level, the hydraulic device is controlled to stretch each inhaul cable from the first stretch-draw level according to the number of the inhaul cable and the initial stretch-draw force of the inhaul cable until the sub-target stretch-draw force corresponding to the current stretch-draw level is reached, the next stretch-draw level is entered, and the current stretch-draw force of each inhaul cable is monitored in real time; comparing the pressure difference approaching variable with a pressure difference approaching variable threshold value, and finely adjusting the corresponding inhaul cable according to a comparison result; the method comprises the following steps: generating a plurality of tension proximity diagrams according to the real-time monitored current tension force of each inhaul cable, searching for the inhaul cable with tension kick according to node conditions in the tension proximity diagrams, and sending out alarm information.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge cable control, and more specifically, relates to a method and system for synchronously controlling multiple cables of a cable-stayed buckle based on hydraulic coordination. Background Art

[0002] As the core structural form of modern large-span bridges, cable-stayed bridges efficiently transfer the main beam load to the bridge tower through fan-shaped distributed cables, and have the significant advantages of high structural stiffness, excellent seismic performance and strong construction adaptability. Cable-stayed bridges account for more than 65% of bridges with a span of more than 200 meters, and the accuracy of their cable force control directly determines the structural safety and service life. The traditional single-cable discrete tensioning mode can no longer meet the efficiency and accuracy requirements of large-scale bridge construction. The development of multi-cable collaborative intelligent control technology has great engineering value in promoting the industrialized construction of bridge projects.

[0003] The current industry generally adopts a batch single-cable tensioning process, which relies on manually operated hydraulic jacks to adjust each cable. The typical process includes three stages: initial tensioning: pre-tighten the single cable at 20% of the design value to eliminate the gap between the cable saddles; graded tensioning: load in two stages of 60% and 85%, and each stage needs to be left still for 2 hours to observe the cable force attenuation; compensatory tensioning: the spectrum method is used to detect the cable force of the completed bridge and then the cable is tensioned twice. The measured discrete error is ±2% (the overall cable force deviation is ±1%). Although some projects have attempted symmetrical synchronous tensioning, the actual synchronization accuracy is less than 80% due to the lack of coordinated control of the hydraulic system.

[0004] However, the existing technology still has the following technical difficulties: (1) Accuracy out of control: the tensioning of a single cable causes a redistribution effect of the cable force, and the maximum deviation of the cable force in the completed bridge exceeds 10% (monitoring data of a certain cross-sea bridge); the independent control of the hydraulic system leads to a response delay of >200ms, and the pressure fluctuation amplitude under sudden load is ≥15%; (2) Efficiency bottleneck: a single cable-stayed bridge (such as 36 pairs of cables) needs to undergo three rounds of cable adjustment, which takes a total of 15-30 days and interrupts the continuous pouring of main beam concrete; (3) Lack of intelligence: there is no real-time closed-loop feedback of cable force-displacement-oil pressure, and it relies on experience threshold classification; there is a lack of digital simulation rehearsal capabilities, and it is impossible to predict the changes in tower deviation / support reaction force; health monitoring relies on offline detection, and the online diagnosis coverage rate is less than 30%. Summary of the invention

[0005] In order to solve the above technical problems, the present invention proposes a method and system for synchronous control of multiple cables of inclined-stayed buckles based on hydraulic coordination, which decouples the overall tensioning process into multi-level sub-goals, and executes them in a serial manner according to the cable number and the initial cable force; secondly, the pressure difference approach variable of each cable is calculated in real time, and when the rate of change exceeds the threshold, the hydraulic device is triggered to dynamically fine-tune; at the same time, based on the topological structure of the tension approach graph, the cable force jump node is identified, the gradient mutation is greater than 5%, and an early warning is issued, which can perform precise hydraulic coordinated control of the cables of the cable bridge, greatly improving the working efficiency.

[0006] To achieve the above object, according to the first aspect of the present invention, a method for synchronous regulation of multiple cables in a cable-stayed and buckle-suspended system based on hydraulic coordination is provided, including: Obtain the cable information of each cable, and configure a hydraulic device for each cable, where the cable information includes: cable number, initial tensile force of the cable; Classify the tensioning operations of the hydraulic devices into multiple tensioning levels, assign sub-target tensile forces to each tensioning level, and control the hydraulic devices to start from the first tensioning level, and tension each cable according to the cable number and in combination with the initial tensile force of the cable until the sub-target tensile force corresponding to the current tensioning level is reached, and then enter the next tensioning level. Among them, the current tensile force of each cable is monitored in real time, and the differential pressure approaching variable of each cable is calculated, and the differential pressure approaching variable is compared with the differential pressure approaching variable threshold, and the corresponding cable is finely adjusted according to the comparison result; According to the current tensile force of each cable monitored in real time, generate multiple tension proximity graphs, and find the cables with sudden tension jumps according to the node conditions in the tension proximity graphs, and send out alarm information.

[0007] Further, calculating the differential pressure approaching variable of each cable includes: , where, is the differential pressure approaching variable of the th cable, is the adjustment factor, is the average tensile force of all cables, is the current tensile force of the th cable; Comparing the differential pressure approaching variable with the differential pressure approaching variable threshold, and finely adjusting the corresponding cable according to the comparison result specifically includes: When , no adjustment is made; when , tensile fine adjustment is performed, and when , pressure relief fine adjustment is performed, where, is the differential pressure approaching variable threshold.

[0008] Further, generating multiple tension proximity graphs according to the current tensile force of each cable monitored in real time includes: at the current time point, if the difference between the tensile forces of two cables is less than the preset difference threshold, it is considered that the two cables are in a tension proximity state, abstract the two cables as nodes and connect them with connecting edges to form an undirected graph as the tension proximity graph of the two cables, and record all the tension proximity graphs at the current time point.

[0009] Further, according to the node conditions in the tension proximity diagram, the cables where tension jumps occur are found as follows: Every other time period, all tension proximity diagrams are obtained. When the increase or decrease in the number of all tension proximity diagrams exceeds the allowable number threshold, the cable corresponding to the increased tension proximity diagram or the cable corresponding to the decreased tension proximity diagram is taken as the cable where tension jumps occur.

[0010] Further, it also includes: Mapping the cable number of each cable and the corresponding current tensile force into two-dimensional points to form a "cable number - current tensile force" scatter plot set, where the cable number of each cable is used as the abscissa and the current tensile force of each cable is used as the ordinate; According to the "cable number - current tensile force" scatter plot set, through two-dimensional kernel density estimation, a density distribution heat map of the current tensile force under different cable numbers is generated; Within the time period of completing each tensioning level, multiple consecutive sampling intervals are set, and all density distribution heat maps within all sampling intervals are obtained. All density distribution heat maps are stacked according to the sampling intervals to generate a three-dimensional tension density field, where the cable number of each cable is used as the abscissa, the current tensile force of each cable is used as the ordinate, and the sampling interval is the depth axis.

[0011] Further, calculate the density variance and skewness of the density distribution heat map corresponding to each sampling interval; When the density variance is less than the preset variance threshold, the tensile forces of the cable group are consistent and the coordination is normal. Otherwise, there are deviations in the tensile forces of the cable group. Find the cables with abnormal tensile forces and perform fine-tuning operations; When the skewness is approximately equal to 0, the tensile force distribution of the cable group is symmetric about the left and right. When the skewness is greater than 0, the cable group is biased towards the side with low tensile force. When the skewness is less than 0, the cable group is biased towards the side with high tensile force. When the cable group is biased towards the side with low tensile force or the cable group is biased towards the side with high tensile force, find the cables with abnormal tensile forces and perform fine-tuning operations until the tensile force distribution of the cable group is symmetric about the left and right.

[0012] Further, mark the density variance and skewness on the three-dimensional tension density field.

[0013] According to the second aspect of the present invention, a multi-cable synchronous regulation system based on hydraulic coordination for cable-stayed and buckled hanging is also proposed, including: A cable information acquisition module, which is used to acquire the cable information of each cable and configure a hydraulic device for each cable, where the cable information includes: cable number, initial tensile force of the cable; The tensioning module is used to classify the tensioning operations of the hydraulic device into multiple tensioning levels, assign sub-target tensile forces to each tensioning level, control the hydraulic device to start from the first tensioning level, and tension each cable according to the cable number in combination with the initial tensile force of the cable until the sub-target tensile force corresponding to the current tensioning level is reached, and then enter the next tensioning level. Among them, the current tensile force of each cable is monitored in real time, and the differential pressure approaching variable of each cable is calculated, and the differential pressure approaching variable is compared with the differential pressure approaching variable threshold, and the corresponding cable is finely adjusted according to the comparison result; The alarm module is used to generate multiple tension proximity graphs according to the current tensile force of each cable monitored in real time, find the cables with sudden tension jumps according to the node conditions in the tension proximity graphs, and send out alarm information.

[0014] Further, calculating the differential pressure approaching variable of each cable includes: , wherein, is the differential pressure approaching variable of the th cable, is the adjustment factor, is the average tensile force of all cables, is the current tensile force of the th cable; Comparing the differential pressure approaching variable with the differential pressure approaching variable threshold, and finely adjusting the corresponding cable according to the comparison result, specifically including: When , no adjustment is made; when , tensile fine adjustment is performed, and when , pressure relief fine adjustment is performed, wherein, is the differential pressure approaching variable threshold.

[0015] Further, generating multiple tension proximity graphs according to the current tensile force of each cable monitored in real time includes: at the current time point, if the difference between the tensile forces of two cables is less than the preset difference threshold, it is considered that the two cables are in a tension proximity state, and the two cables are abstracted as nodes and connected with connecting edges to form an undirected graph as the tension proximity graph of the two cables, and all tension proximity graphs at the current time point are recorded.

[0016] Generally speaking, compared with the prior art through the above technical solutions conceived by the present invention, the following beneficial effects are obtained: 1. The method of the present invention decouples the overall tensioning process into multiple sub-goals and executes them serially according to the cable number and initial cable force. Secondly, the approaching variable of the pressure difference between each cable is calculated in real time, and when the change rate exceeds the threshold, the hydraulic device is triggered for dynamic fine-tuning. At the same time, the cable force jump nodes are identified based on the topological structure of the tension proximity graph, with a gradient mutation > 5%, and a warning is given, enabling precise hydraulic coordination control of the stay cables of a cable-stayed bridge and greatly improving the operation efficiency.

[0017] 2. The method of the present invention calculates the tension difference between stay cables in real time. When the difference is less than the preset threshold, an undirected graph network with stay cables as nodes and proximity relationships as edges is dynamically constructed. The number mutation of the tension proximity graph is scanned periodically to accurately locate the stay cables with tension jumps. Synchronously, the cable number and the current cable force are mapped into a two-dimensional scatter plot set, and a heat map is generated through kernel density estimation and stacked along the time axis to form a three-dimensional tension density field, significantly improving the warning accuracy.

[0018] 3. The method of the present invention extracts the statistical features of the heat map for each time slice in the three-dimensional tension density field: calculates the density variance to determine the cable force dispersion degree, analyzes the skewness to diagnose the distribution balance; triggers targeted fine-tuning based on statistical decisions - when the variance exceeds the limit, locate the abnormal cable for correction, and when the skewness is unbalanced, perform balanced tensioning towards the lower or higher cable force side; synchronously dynamically mark the statistical extreme points in the density field to guide the response of the hydraulic system, achieving precise control of the overall cable force dispersion and distribution skewness; significantly reducing the fine-tuning energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the flowchart of the method in Embodiment 1 of the present invention; Figure 2 is the system structure diagram of Embodiment 2 of the present invention; Figure 3 is the schematic diagram of the cable-stayed bridge of the present invention; Figure 4 is the schematic diagram of the tensile force monitoring of the stay cable of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] In order to better understand the above technical solution, the following will describe the above technical solution in detail in conjunction with the accompanying drawings of the specification and specific embodiments.

[0021] The method provided by the present invention can be implemented in the following terminal environment. The terminal may include one or more of the following components: a processor, a storage medium, and a display screen. Among them, at least one instruction is stored in the storage medium, and the instruction is loaded and executed by the processor to implement the method described in the following embodiments.

[0022] The processor may include one or more processing cores. The processor uses various interfaces and circuits to connect various parts within the entire terminal, and by running or executing instructions, programs, code sets, or instruction sets stored in the storage medium, as well as calling data stored in the storage medium, it executes various functions of the terminal and processes data.

[0023] The storage medium may include a random access memory (RAM), and may also include a read-only memory (ROM). The storage medium can be used to store instructions, programs, code, code sets, or instructions.

[0024] The display screen is used to display the user interfaces of various applications.

[0025] In addition, those skilled in the art can understand that the structure of the above terminal does not constitute a limitation on the terminal. The terminal may include more or fewer components, or combine certain components, or have different component arrangements. For example, the terminal also includes components such as a radio frequency circuit, an input unit, a sensor, an audio circuit, a power supply, etc., which will not be elaborated here.

[0026] Embodiment 1 As Figure 1 , this embodiment proposes a method for synchronously regulating multiple cables of a cable-stayed buckling suspension based on hydraulic cooperation, including: Step 101, obtain the cable information of each cable, and configure a hydraulic device for each cable. Among them, the cable information includes: cable number, initial tensile force of the cable, and the form of the cable as Figure 3 shown; Step 102, classify the tensioning operations of the hydraulic devices into multiple tensioning levels, assign sub-goal tensile forces to each tensioning level, control the hydraulic devices to start from the first tensioning level, and tension each cable according to the cable number and in combination with the initial tensile force of the cable until the sub-goal tensile force corresponding to the current tensioning level is reached, and then enter the next tensioning level. Among them, the current tensile force of each cable is monitored in real time, and the differential pressure approaching variable of each cable is calculated, and the differential pressure approaching variable is compared with the differential pressure approaching variable threshold, and the corresponding cable is fine-tuned according to the comparison result; Preferably, for example, the tensioning levels can be divided into three levels, and the sub-goal tensile force for each level of tensioning is 33% of the total target tensile force. Of course, the total target tensile force may not be evenly distributed. This embodiment does not limit the number of tensioning levels and the proportion of the sub-goal tensile force corresponding to each level.

[0027] Specifically, calculating the differential pressure approaching variable of each cable includes: , Among them, is the differential pressure approaching variable of the th cable, is the adjustment factor, is the average tensile force of all cables, is the th current tensile force of the cable; Preferably, the adjustment factor can be set according to expert experience or historical experience, which is not limited in this embodiment.

[0028] Compare the differential pressure approaching variable with the differential pressure approaching variable threshold, and make fine adjustments to the corresponding cable according to the comparison result, specifically including: When , no adjustment is made; when , tensioning fine adjustment is carried out, and when , pressure relief fine adjustment is carried out, where is the differential pressure approaching variable threshold.

[0029] Step 103, generate multiple tension proximity diagrams according to the current tensile force of each cable monitored in real time, and find the cables with sudden tension jumps according to the node conditions in the tension proximity diagrams, and send out an alarm message.

[0030] Specifically, as Figure 4 shown, through the tensile force monitoring device (the tensile force monitoring device can be set within the Figure 4 dashed line frame, and the tensile force is measured through the fixed end of the cable within the dashed line frame) to monitor the current tensile force of each cable in real time. Generating multiple tension proximity diagrams according to the current tensile force of each cable monitored in real time includes: at the current time point, if the difference between the tensile forces of two cables is less than the preset difference threshold, it is considered that the two cables are in a tension proximity state, abstract the two cables as nodes and connect them with connecting edges to form an undirected graph as the tension proximity diagram of the two cables, and record all the tension proximity diagrams at the current time point.

[0031] Specifically, finding the cables with sudden tension jumps according to the node conditions in the tension proximity diagrams includes: obtaining all the tension proximity diagrams once every time period. When the increase or decrease in the number of all the tension proximity diagrams exceeds the allowable number threshold, the cables corresponding to the increased tension proximity diagrams or the cables corresponding to the decreased tension proximity diagrams are used as the cables with sudden tension jumps.

[0032] Specifically, after step 103 in this embodiment, it further includes: mapping the cable number of each cable and the corresponding current tensile force into two-dimensional points to form a "cable number - current tensile force" scatter set, where the cable number of each cable is used as the abscissa and the current tensile force of each cable is used as the ordinate; According to the scatter set of "cable number - current tension", through two-dimensional kernel density estimation, a density distribution heat map of the current tension under different cable numbers is generated; Within the time period of completing each tensioning level, multiple consecutive sampling intervals are set, and all density distribution heat maps within all sampling intervals are obtained. All density distribution heat maps are stacked according to the sampling intervals to generate a three-dimensional tension density field, where the cable number of each cable is used as the abscissa, the current tension of each cable is used as the ordinate, and the sampling interval is the depth axis.

[0033] Specifically, calculate the density variance and skewness of the density distribution heat map corresponding to each sampling interval; When the density variance is less than the preset variance threshold, the tensions of the cable group are consistent and the coordination is normal. Otherwise, there are deviations in the tensions of the cable group. Locate the cables with abnormal tensions and perform fine-tuning operations; Preferably, the formula for calculating the density variance is as follows: , where, is the density variance at the sampling interval , is the number of cables, is the sampling interval at the th cable's current tension, is the sampling interval at which the average tension of all cables.

[0034] When the skewness is approximately equal to 0 (as to how much skewness is considered approximately equal to 0, this embodiment does not make a limit, and users can make reasonable settings), the tension distribution of the cable group is symmetric left and right. When the skewness is greater than 0, the cable group is biased towards the side of low tension. When the skewness is less than 0, the cable group is biased towards the side of high tension. When the cable group is biased towards the side of low tension or the cable group is biased towards the side of high tension, locate the cables with abnormal tensions and perform fine-tuning operations until the tension distribution of the cable group is symmetric left and right.

[0035] Preferably, the formula for calculating the skewness is as follows: , where, is the skewness at the sampling interval , is the number of cables, is the sampling interval at the th cable's current tension, is the sampling interval at which the average tension of all cables, is the sampling interval Standard deviation of density at a certain time

[0036] Specifically, the density variance and skewness are marked on the three-dimensional tensile density field.

[0037] Embodiment 2 As Figure 2 shown, this embodiment proposes a multi-cable synchronous regulation system based on hydraulic cooperation for cable-stayed buckling suspension, including: A cable information acquisition module, which is used to acquire the cable information of each cable and configure a hydraulic device for each cable. Among them, the cable information includes: cable number and initial tensile force of the cable; A tensioning module, which is used to classify the tensioning operations of the hydraulic device into multiple tensioning levels, assign sub-target tensile forces to each tensioning level, and control the hydraulic device to start from the first tensioning level, and tension each cable according to the cable number in combination with the initial tensile force of the cable until the sub-target tensile force corresponding to the current tensioning level is reached, and then enter the next tensioning level. Among them, the current tensile force of each cable is monitored in real time, and the differential pressure approaching variable of each cable is calculated, and the differential pressure approaching variable is compared with the differential pressure approaching variable threshold, and the corresponding cable is fine-tuned according to the comparison result; Specifically, calculating the differential pressure approaching variable of each cable includes: , wherein, is the differential pressure approaching variable of the th cable, is the adjustment factor, is the average tensile force of all cables, is the current tensile force of the th cable; Preferably, the adjustment factor can be set according to expert experience or historical experience, and this embodiment does not make a limitation.

[0038] Comparing the differential pressure approaching variable with the differential pressure approaching variable threshold, and fine-tuning the corresponding cable according to the comparison result, specifically including: When , no adjustment is made; when , tensile fine-tuning is performed, and when , pressure relief fine-tuning is performed, wherein, is the differential pressure approaching variable threshold.

[0039] An alarm module, which is used to generate multiple tension proximity diagrams according to the current tensile force of each cable monitored in real time, find the cables with sudden tension jumps according to the node conditions in the tension proximity diagrams, and send out alarm information.

[0040] Specifically, according to the current tensile force of each cable monitored in real time, multiple tension proximity graphs are generated, including: at the current time point, if the difference between the tensile forces of two cables is less than a preset difference threshold, it is considered that the two cables are in a tension proximity state. The two cables are abstracted as nodes and connected by connecting edges to form an undirected graph as the tension proximity graph of the two cables, and all tension proximity graphs at the current time point are recorded.

[0041] Specifically, according to the node situation in the tension proximity graph, the cables with sudden tension jumps are found, including: every time period, all tension proximity graphs are obtained once. When the number of all tension proximity graphs increases or decreases by more than the allowable number threshold, the cables corresponding to the increased tension proximity graphs or the cables corresponding to the decreased tension proximity graphs are used as the cables with sudden tension jumps.

[0042] Specifically, after the warning module in this embodiment, it further includes: mapping the cable number of each cable and the corresponding current tensile force into two-dimensional points to form a "cable number - current tensile force" scatter plot set, where the cable number of each cable is used as the abscissa and the current tensile force of each cable is used as the ordinate; According to the "cable number - current tensile force" scatter plot set, through two-dimensional kernel density estimation, a density distribution heat map of the current tensile force under different cable numbers is generated; Within the time period of each tensioning level, multiple consecutive sampling intervals are set, and all density distribution heat maps within all sampling intervals are obtained. All density distribution heat maps are stacked according to the sampling intervals to generate a three-dimensional tension density field, where the cable number of each cable is used as the abscissa, the current tensile force of each cable is used as the ordinate, and the sampling interval is the depth axis.

[0043] Specifically, calculate the density variance and skewness of the density distribution heat map corresponding to each sampling interval; When the density variance is less than the preset variance threshold, the tensile forces of the cable group are consistent and the coordination is normal. Otherwise, there is a deviation in the tensile forces of the cable group, find the cables with abnormal tensile forces, and perform fine-tuning operations; When the skewness is approximately equal to 0, the distribution of the tensile forces of the cable group is symmetric left and right. When the skewness is greater than 0, the cable group is biased towards the side with low tensile force. When the skewness is less than 0, the cable group is biased towards the side with high tensile force. When the cable group is biased towards the side with low tensile force or the cable group is biased towards the side with high tensile force, find the cables with abnormal tensile forces, and perform fine-tuning operations until the distribution of the tensile forces of the cable group is symmetric left and right.

[0044] Specifically, mark the density variance and skewness on the three-dimensional tension density field.

[0045] Embodiment 3 An embodiment of the present invention also provides a storage medium storing multiple instructions for implementing the method for synchronous regulation of multiple cables in cable-stayed suspension with hydraulic cooperation.

[0046] Optionally, in this embodiment, the above storage medium may be located in any one of the computer terminals in a computer terminal group in a computer network, or in any one of the mobile terminals in a mobile terminal group.

[0047] Optionally, in this embodiment, the storage medium is configured to store program codes for executing the method of Embodiment 1.

[0048] Embodiment 4 An embodiment of the present invention also provides an electronic device, including a processor and a storage medium connected to the processor. The storage medium stores multiple instructions that can be loaded and executed by the processor, so that the processor can execute the method for synchronous regulation of multiple cables in cable-stayed suspension with hydraulic cooperation.

[0049] Specifically, the electronic device in this embodiment may be a computer terminal, and the computer terminal may include: one or more processors, and a storage medium.

[0050] Among them, the storage medium can be used to store software programs and modules, such as the method for synchronous regulation of multiple cables in cable-stayed suspension with hydraulic cooperation in the embodiment of the present invention, and the corresponding program instructions / modules. The processor runs the software programs and modules stored in the storage medium, thereby performing various functional applications and data processing, that is, implementing the above method for synchronous regulation of multiple cables in cable-stayed suspension with hydraulic cooperation. The storage medium may include a high-speed random access storage medium, and may also include a non-volatile storage medium, such as one or more magnetic storage systems, flash memory, or other non-volatile solid-state storage media. In some instances, the storage medium may further include a storage medium remotely disposed relative to the processor, and these remote storage media can be connected to the terminal through a network. Examples of the above network include but are not limited to the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0051] The processor can call the information and application programs stored in the storage medium through a transmission system to execute the method of Embodiment 1.

[0052] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0053] In the above embodiments of the present invention, the descriptions of each embodiment have their own focuses. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0054] In several embodiments provided by the present invention, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the system embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of units or modules can be in electrical or other forms.

[0055] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0056] In addition, each functional unit in various embodiments of the present invention can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0057] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: USB flash drives, read-only storage media (ROM, Read-Only Memory), random access storage media (RAM, Random Access Memory), mobile hard disks, magnetic disks, or optical disks, and other media that can store program codes.

[0058] Obviously, the above embodiments are only examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. The obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A synchronous regulation method for multiple cables of inclined cable suspension based on hydraulic coordination, characterized in that Including: Obtain the cable information of each cable, and configure a hydraulic device for each cable. Wherein, the cable information includes: cable number, initial tensile force of the cable; Classify the tensioning operations of the hydraulic device into multiple tensioning levels, assign sub-target tensile forces to each tensioning level, and control the hydraulic device to start from the first tensioning level, and tension each cable according to the cable number and in combination with the initial tensile force of the cable until the sub-target tensile force corresponding to the current tensioning level is reached, and then enter the next tensioning level. Wherein, the current tensile force of each cable is monitored in real time, and the differential pressure approaching variable of each cable is calculated, and the differential pressure approaching variable is compared with the differential pressure approaching variable threshold, and the corresponding cable is fine-tuned according to the comparison result; Generate multiple tension proximity graphs according to the current tensile force of each cable monitored in real time, and find the cables with sudden tension jumps according to the node conditions in the tension proximity graphs, and send out alarm information.

2. The method for synchronously regulating multiple cables of inclined cable suspension based on hydraulic coordination according to claim 1, wherein Calculating the differential pressure approaching variable of each cable includes: ， Among them, is the differential pressure approaching variable of the th cable, is the adjustment factor, is the average tensile force of all cables, is the th current tensile force of the cable; Comparing the differential pressure approaching variable with the differential pressure approaching variable threshold, and fine-tuning the corresponding cable according to the comparison result, specifically including: When then no adjustment is made; when then tension fine-tuning is carried out, and when then pressure relief fine-tuning is carried out, where is the differential pressure approach variable threshold value.

3. A synchronous regulation method for multiple cables of inclined cable suspension based on hydraulic cooperation according to claim 1, characterized in that Generating multiple tension proximity graphs according to the current tensile force of each cable monitored in real time includes: at the current time point, if the difference between the tensile forces of two cables is less than the preset difference threshold, it is considered that the two cables are in a tension proximity state, abstract the two cables as nodes and connect them with connecting edges to form an undirected graph as the tension proximity graph of the two cables, and record all the tension proximity graphs at the current time point.

4. The synchronous regulation method for multiple cables of cable-stayed and suspended structure based on hydraulic coordination according to claim 3, characterized in that, Finding the cables with sudden tension jumps according to the node conditions in the tension proximity graphs includes: obtaining all the tension proximity graphs every other time period. When the increase or decrease in the number of all the tension proximity graphs exceeds the allowable number threshold, the cables corresponding to the increased tension proximity graphs or the cables corresponding to the decreased tension proximity graphs are used as the cables with sudden tension jumps.

5. A synchronous regulation method for multiple cables of cable-stayed buckling hanging based on hydraulic cooperation as described in claim 1, characterized in that It also includes: mapping the cable number of each cable and the corresponding current tensile force into two-dimensional points to form a "cable number - current tensile force" scatter plot set, where the cable number of each cable is used as the abscissa and the current tensile force of each cable is used as the ordinate; Generate a density distribution heat map of the current tensile force under different cable numbers through two-dimensional kernel density estimation according to the "cable number - current tensile force" scatter plot set; During the time period of completing each tensioning level, set multiple consecutive sampling intervals, and obtain all the density distribution heat maps within all the sampling intervals, stack all the density distribution heat maps according to the sampling intervals to generate a three-dimensional tension density field, where the cable number of each cable is used as the abscissa, the current tensile force of each cable is used as the ordinate, and the sampling interval is the depth axis.

6. The cable-stayed and buckled multi-cable synchronous regulation method based on hydraulic coordination according to claim 5, wherein, Calculate the density variance and skewness of the density distribution heat map corresponding to each sampling interval; When the density variance is less than the preset variance threshold, the tensile forces of the cable group are consistent and the coordination is normal. Otherwise, there is a deviation in the tensile forces of the cable group, find the cables with abnormal tensile forces, and perform fine-tuning operations; When the skewness is approximately equal to 0, the tensile force distribution of the cable group is symmetric left and right. When the skewness is greater than 0, the cable group tends to the side with lower tensile force. When the skewness is less than 0, the cable group tends to the side with higher tensile force. When the cable group tends to the side with lower tensile force or the side with higher tensile force, find the cables with abnormal tensile forces and perform fine-tuning operations until the tensile force distribution of the cable group is symmetric left and right.

7. The method for synchronously regulating multiple cables of inclined cable suspension with hydraulic coordination according to claim 6, wherein Mark the density variance and skewness on the three-dimensional tension density field.

8. A multi-cable synchronous control system for cable-stayed buckling suspension based on hydraulic coordination, characterized in that Including: A cable information acquisition module, configured to acquire the cable information of each cable and configure a hydraulic device for each cable. Wherein, the cable information includes: cable number, initial tensile force of the cable. A tensioning module, configured to classify the tensioning operations of the hydraulic device into multiple tensioning levels, allocate sub-target tensile forces to each tensioning level, and control the hydraulic device to start from the first tensioning level, and tension each cable according to the cable number in combination with the initial tensile force of the cable until the sub-target tensile force corresponding to the current tensioning level is reached, and then enter the next tensioning level. Wherein, the current tensile force of each cable is monitored in real time, and the differential pressure approach variable of each cable is calculated, and the differential pressure approach variable is compared with the differential pressure approach variable threshold, and corresponding cables are fine-tuned according to the comparison result. An alarm module, configured to generate multiple tension proximity diagrams according to the current tensile force of each cable monitored in real time, find the cables with sudden tension jumps according to the node conditions in the tension proximity diagrams, and send out alarm information.

9. The synchronous regulation system for multiple cables of inclined cable suspension with hydraulic cooperation according to claim 8, wherein, Calculating the differential pressure approach variable of each cable includes: ， Among them, is the differential pressure approaching variable of the th cable, is the adjustment factor, is the average tensile force of all cables, is the current tensile force of the th cable; Comparing the differential pressure approach variable with the differential pressure approach variable threshold, and fine-tuning the corresponding cable according to the comparison result, specifically including: When then no adjustment is made; when then tension fine-tuning is carried out, and when then pressure relief fine-tuning is carried out, where is the threshold value of the differential pressure approaching variable.

10. A cable-stayed buckle hanging multi-cable synchronous regulation system based on hydraulic cooperation according to claim 8, characterized in that, Generating multiple tension proximity diagrams according to the current tensile force of each cable monitored in real time includes: at the current time point, if the difference between the tensile forces of two cables is less than the preset difference threshold, it is considered that the two cables are in a tension proximity state, abstract the two cables as nodes and connect them with connecting edges to form an undirected graph as the tension proximity diagram of the two cables, and record all the tension proximity diagrams at the current time point.

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