A method and system for monitoring the distribution of vertical loads in a locked state of a structure

Abstract

The application provides a vertical load distributed monitoring method and system of a structure locking state, the method comprising: acquiring vertical load data of each locking point, extracting a continuously and directionally changed load segment as a response unit, thereby obtaining a vertical load response unit set of the locking point; merging the response units into homologous vertical load events based on a time proximity relationship and a load change amount; calculating a load bearing participation degree and a correlation strength according to the load change amount in the events, determining a load transfer direction to form a vertical bearing relationship; calculating a locking set index according to the vertical bearing relationship, and outputting a monitoring result containing a state category, an abnormal position and a distribution result; the application has the following beneficial effects: the monitoring object is improved from a single point value to a multi-point bearing relationship, early abnormalities such as local bearing degradation and load migration can be effectively identified when the total load change is not obvious, and the monitoring accuracy is improved.

Description

Technical Field

[0001] This invention relates to the field of marine engineering equipment condition monitoring technology, and in particular to a distributed monitoring method and system for vertical loads in the structural locking state. Background Technology

[0002] Riser pipes, guiding devices, clamping mechanisms, and various large structural connections on offshore platforms typically require locking structures to transfer, limit, and maintain vertical loads, ensuring the riser or supported structure maintains a stable installation posture and stress state during long-term service. These locking structures are often not supported by a single contact point, but rather by multiple locking blocks, slips, clamping units, or support contact areas working together to transfer vertical loads. Deviations in preload, wear on contact surfaces, local deformation, assembly errors, or stiffness changes at any locking point can alter the actual load distribution within the overall structure. In the service environment of offshore platforms, risers are also subject to long-term effects from waves, ocean currents, platform heave, tensioning system adjustments, and fluctuations in operating loads, resulting in dynamic stress responses at multiple locking points. Current technologies typically employ pressure sensors, strain sensors, fiber optic grating sensors, or multi-channel acquisition devices to acquire load or strain data from multiple monitoring locations, and determine whether the locking structure is in an abnormal state by using load peak values, strain amplitudes, over-limit thresholds, statistical characteristics, or timestamp synchronization methods. These methods can reflect the local stress changes at each measuring point and can also detect problems such as overload or obvious loosening to a certain extent. However, their analysis objects are usually still the load values ​​of a single monitoring point or the synchronous curves of several measuring points, making it difficult to directly reveal the transmission process of a vertical load disturbance between multiple locking points.

[0003] In practical engineering, early abnormalities in the locking state often do not manifest as a sudden change in the total vertical load. Instead, they may manifest as a continuous weakening of some locking points, compensatory load increases at adjacent locking points, a gradual shift in the main load-bearing area, and load migration from one locking area to another. At this point, even if the load values ​​at each measuring point do not exceed the alarm threshold, the load-bearing relationship within the locking structure may have already changed. On the other hand, because distributed monitoring nodes are located at different locking points, the responses of multiple locking points to the same vertical load disturbance differ in timing and duration. Directly comparing the numerical values ​​of continuous sampling curves can easily lead to mixed analysis of load changes under different disturbances, or misjudging delayed responses under the same disturbance as independent anomalies. Therefore, existing technologies still lack a monitoring method that can extract the effective load change process from distributed vertical load monitoring data, identify multiple locking points involved in the same vertical load disturbance, and further determine the vertical load-bearing relationship within the locking structure. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a distributed monitoring method and system for vertical loads in the structural locking state, which solves the problem that the analysis objects of the prior art are usually the load values ​​of a single monitoring point or the synchronization curves of several measuring points, making it difficult to directly reveal the transmission process of a single vertical load disturbance between multiple locking points.

[0005] To achieve the above and other related objectives, the present invention provides the following technical solution:

[0006] A distributed monitoring method for vertical loads in a locked structure includes the following steps: acquiring vertical load monitoring data corresponding to each locking point in the locked structure collected by distributed monitoring points on the locked structure, and obtaining a set of vertical load response units for the locking points based on the vertical load monitoring data, wherein each vertical load response unit for the locking points includes a monitoring point number, a response start time, a response end time, and a load change; based on the time proximity relationship and load change among the response units in the set of vertical load response units for the locking points, grouping response units belonging to the same vertical load disturbance into a set of vertical load events from the same source, thereby obtaining a set of vertical load events from the same source.

[0007] The load participation of each locking point is determined based on the load change of each response unit within the same event in the set of common vertical load events, and the load association strength and load transfer direction between each locking point are determined based on the load participation, thereby forming the vertical load relationship of the locking structure; the locking state monitoring results are obtained based on the vertical load relationship of the locking structure, wherein the locking state monitoring results include the locking state category, the location of abnormal locking points, and the vertical load distribution results.

[0008] In one embodiment of the present invention, obtaining the set of vertical load response units for locking points based on the vertical load monitoring data includes: scanning the vertical load monitoring data of each locking point in chronological order of acquisition time, and determining the load segments that are continuously changing in the same direction as the vertical load response units for locking points, thereby obtaining the set of vertical load response units for locking points.

[0009] In one embodiment of the present invention, after acquiring the vertical load monitoring data corresponding to each locking point in the locking structure collected by each distributed monitoring point on the locking structure, and before scanning the vertical load monitoring data of each locking point in the order of acquisition time, the method further includes: verifying the validity of the vertical load monitoring data of each locking point. The validity verification includes determining whether the sampling time is continuous, whether there is a time reversal, whether the load sensor is in the saturation range, whether the sensor calibration coefficient is missing, and whether the original signal exceeds the allowable measurement range of the device. For data segments that fail the validity verification, the corresponding locking point number and time range are recorded, and the data segments that fail the validity verification are not written into the locking point vertical load response unit set as locking point vertical load response units.

[0010] In one embodiment of the present invention, the step of scanning the vertical load monitoring data of each locking point in chronological order of acquisition time and determining the load segments that continuously change in the same direction as the locking point vertical load response unit includes: scanning the vertical load monitoring data of each locking point in chronological order of acquisition time; when adjacent sampled values ​​continuously change in the same direction, determining the load segments that continuously change in the same direction as a load change process; when the change direction reverses or the change amplitude is lower than a preset effective change condition, ending the current load change process and generating a locking point vertical load response unit, wherein the preset effective change condition is that the load change amplitude reaches an effective change threshold and the load change remains in the same direction within a continuous sampling interval of not less than a preset number of sampling points.

[0011] In one embodiment of the present invention, the step of grouping response units belonging to the same vertical load disturbance into a common vertical load event based on the time proximity relationship and load change among the response units in the locking point vertical load response unit set includes: sorting all response units in the locking point vertical load response unit set according to the response start time, and calculating the time proximity of any two response units based on the response start time and response end time of the two response units;

[0012] The load participation ratio is calculated based on the absolute value of the load change of the two response units, and the product of the time proximity and the load participation ratio is used as the load event correlation quantity between the two response units. The response unit with the earliest response start time that has not yet been assigned to any event is selected as the seed response unit. The response units in the set of vertical load response units at the locking point that have not yet been assigned to the seed response unit are compared in pairs. Based on the comparison results, the response units that meet the preset correlation conditions are assigned to the same candidate event as the seed response unit.

[0013] Using the response units already included in the candidate events as the expansion objects, check the load event correlation between the remaining response units in the locking point vertical load response unit set and any response unit in the candidate events. When the load event correlation reaches a preset correlation condition, the corresponding response unit is assigned to the candidate event. When there are no new response units that can be assigned in the locking point vertical load response unit set, the candidate event is determined as a homogeneous vertical load event, and the next response unit that has not yet been assigned to an event and has the earliest response start time is selected as the new seed response unit. The merging process is repeated until all response units in the locking point vertical load response unit set have been assigned.

[0014] In one embodiment of the present invention, determining the load participation of each locking point based on the load change of each response unit within the same event in the set of common vertical load events includes: for any common vertical load event in the set of common vertical load events, extracting the load change of all response units within the event, and determining the load participation of the locking point in the event based on the absolute value of the load change corresponding to a single locking point and the absolute value of the load change of all response units within the event.

[0015] In one embodiment of the present invention, determining the load association strength and load transfer direction between each locking point based on the load participation degree to form a vertical load-bearing relationship of the locking structure includes: for any two locking points within the same event, using the product of the load participation degrees of the two locking points as a basic association term, and determining the load association strength based on the basic association term and the load change of the two locking points; classifying the load relationship in conjunction with the response start time, and determining each locking point as a priority load-bearing point, a cooperative load-bearing point, and a load release point based on the classification results, and defining the load transfer relationship, wherein the load transfer direction of the load transfer relationship is from the unloaded locking point to the unloaded locking point;

[0016] For all the same-source vertical load events in the set of same-source vertical load events, determine the load-bearing relationship record corresponding to each event; statistically analyze the load-bearing participation of each locking point according to the order of event occurrence, obtain the long-term load-bearing ratio of each locking point within the monitoring period based on the statistical results, and statistically analyze the load-bearing correlation strength between each locking point according to the order of event occurrence, obtain the long-term load-bearing correlation strength based on the statistical results; when the same pair of locking points continuously has a load-bearing correlation strength higher than the preset correlation strength threshold in consecutive same-source vertical load events and the load change direction shows that one locking point is deloaded while the other locking point is loaded, the same pair of locking points is recorded as a continuous load migration path.

[0017] In one embodiment of the present invention, obtaining the locking state monitoring result based on the vertical load-bearing relationship of the locking structure includes: sorting the long-term load-bearing ratio of each locking point from high to low, selecting the locking point with the highest load-bearing ratio, and using the sum of the long-term load-bearing ratios of the selected locking points as the locking concentration index; when the locking concentration index is within the range corresponding to the normal locking state and there is no continuous load migration path with continuously increasing load-bearing correlation strength, a stable locking state is output; when the locking concentration index is higher than the range corresponding to the normal locking state and the main load-bearing effect is concentrated on the selected locking point, an off-center load locking state is output.

[0018] When the long-term load-bearing ratio of a certain locking point continues to decrease and the load transfer direction of the locking point points to another locking point, the output shows that the load-bearing capacity of the corresponding area of ​​the locking point is degraded; when the load-bearing participation of a certain locking point is continuously lower than the weak participation threshold in consecutive occurrences of the same source vertical load events and the long-term load-bearing ratio of adjacent locking points continues to increase, the output shows that the corresponding area of ​​the locking point is at risk of local failure.

[0019] A distributed monitoring system for vertical loads in a structure under locking conditions includes: a response unit forming module, used to acquire vertical load monitoring data corresponding to each locking point in the locking structure collected by distributed monitoring points on the locking structure, and to obtain a set of vertical load response units for locking points based on the vertical load monitoring data, wherein each vertical load response unit for locking points includes a monitoring point number, a response start time, a response end time, and a load change; and a homogeneous event merging module, used to merge response units belonging to the same vertical load disturbance into homogeneous vertical load events based on the time proximity relationship and load change among the response units in the set of vertical load response units for locking points, thereby obtaining a set of homogeneous vertical load events.

[0020] The load-bearing relationship determination module is used to determine the load participation degree of each locking point based on the load change of each response unit within the same event in the same set of vertical load events, and to determine the load association strength and load transfer direction between each locking point based on the load participation degree, thereby forming the vertical load-bearing relationship of the locking structure; the locking state monitoring result output module is used to obtain the locking state monitoring result based on the vertical load-bearing relationship of the locking structure, wherein the locking state monitoring result includes the locking state category, the location of abnormal locking points, and the vertical load distribution result.

[0021] An electronic device includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform a distributed monitoring method for vertical loads in a structural locking state as described above.

[0022] As described above, the distributed monitoring method and system for vertical loads in the locked state of a structure according to the present invention has the following beneficial effects: The present invention elevates the monitoring and analysis object from single-point load values ​​to the vertical bearing relationship between multiple points, which can effectively identify early anomalies such as local load withdrawal and load migration when the total vertical load change is not significant, overcoming the problem of misjudgment of single-point thresholds; The present invention also extracts response units of continuous load increase and decrease, and merges events of the same source according to time and load participation relationship, effectively distinguishing the associated response under the same disturbance from the independent changes under different disturbances, avoiding misjudgment caused by response delay in dynamic environments; The present invention also accurately identifies the main bearing area, release area and transfer direction by quantifying bearing participation and correlation strength, calculates the locking concentration index, and intuitively outputs the state category, abnormal location and load distribution results, providing reliable support for predictive maintenance and precise inspection of locked structures, thereby significantly improving the accuracy and foresight of structural safety monitoring in complex environments. Attached Figure Description

[0023] Figure 1 This is a flowchart of the distributed monitoring method for vertical loads in the structural locking state according to the first embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of a distributed monitoring system for vertical loads in the structural locking state according to the second embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of an electronic device according to the third embodiment of the present invention;

[0026] Figure 4 This is the distribution of the average load participation of each locking point in the embodiments of the present invention. Detailed Implementation

[0027] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features described herein can be combined with each other.

[0028] The first embodiment of the present invention relates to a distributed monitoring method for vertical loads in a structural locking state, the process of which is as follows: Figure 1 As shown, the details are as follows:

[0029] Step 101: Obtain the vertical load monitoring data corresponding to each locking point in the locking structure collected by each distributed monitoring point on the locking structure, and obtain the set of vertical load response units of the locking point based on the vertical load monitoring data.

[0030] Specifically, firstly, the vertical load monitoring data corresponding to each locking point in the locking structure is acquired; then, the vertical load monitoring data of each locking point is scanned in the order of acquisition time, and the load segments that are continuously changing in the same direction are identified as the vertical load response units of the locking points, thereby obtaining the set of vertical load response units of the locking points; wherein, the vertical load response unit of the locking points includes the monitoring point number, the response start time, the response end time, and the load change amount.

[0031] More specifically, the vertical load monitoring data of each locking point is scanned in chronological order of acquisition time, and load segments that continuously change in the same direction are identified as locking point vertical load response units. The specific process includes: first, scanning the vertical load monitoring data of each locking point in chronological order of acquisition time; when adjacent sampled values ​​continuously change in the same direction, the load segments continuously changing in the same direction are identified as a load change process; when the change direction reverses or the change amplitude is lower than the preset effective change condition, the current load change process ends and a locking point vertical load response unit is generated. The preset effective change condition is that the load change amplitude reaches the effective change threshold and the load change remains in the same direction within a continuous sampling interval of no less than the preset number of sampling points; for segments where only a single sampling point jumps and the sampling points before and after do not form a continuous change trend, they are marked as instantaneous interference and no locking point vertical load response unit is generated.

[0032] Furthermore, step 101 forms a set of vertical load response units at the locking point. This step serves as the initial step of the entire method, processing the raw vertical load monitoring data uploaded by each distributed monitoring point of the locking structure. Taking the riser locking structure of an offshore platform as an example, multiple locking blocks, slips, or clamping units jointly bear the vertical load of the riser. Each locking point is equipped with a monitoring node. The monitoring node can directly obtain the contact load using a pressure sensor, or it can obtain the force response using a strain sensor or fiber optic grating sensor and then convert it into a vertical load value through a pre-calibrated relationship. Regardless of the type of sensor used, the data entering this step is uniformly represented by the monitoring point number. Collection time and vertical load values ,in Corresponding to the sensor installation location, The clock signal is provided by the monitoring system. This refers to the vertical load monitoring value at the corresponding locking point at that moment;

[0033] A set of vertical load response units is formed at the locking point. Previously, this invention first verified the validity of the raw data collected at each locking point. Validity verification included determining whether the sampling time was continuous, whether there was time reversal, whether the load sensor was in the saturation range, whether the sensor calibration coefficients were missing, and whether the raw signal exceeded the device's allowable measurement range. When the collected signal was strain, voltage, pressure, or fiber optic wavelength offset, it should first be converted into a vertical load according to the pre-established calibration relationship of the corresponding locking point. Then proceed to subsequent differential and response judgments; for data segments that fail validity verification, the system only records their corresponding locking point number and time range, and does not write them into the set as normal response units. To avoid invalid data being mistakenly identified as a change in the locking state;

[0034] This step does not directly send all the continuously sampled data into subsequent analysis. Instead, it converts the continuous load curve into a response unit representing a local load change process. This design is because early abnormal locking states often do not manifest as an instantaneous sample value exceeding the limit, but rather as a continuous increase or decrease in load at a locking point, or a gradual withdrawal from the load-bearing capacity. This invention takes a single monitoring point as the object and scans its vertical load value in chronological order of acquisition time. When adjacent sampled values ​​show the same direction of change, the continuous segment is determined as a load change process. When the direction of change reverses, or the change amplitude is lower than the preset effective change condition, the current load change process ends, and a response unit is generated.

[0035] The load change is obtained by the difference between adjacent states, which is derived from the first-order incremental relationship in mathematics. That is, the change of a physical quantity between two states is equal to the value of the later state minus the value of the earlier state. This application uses this basic relationship to express the change of the vertical load at the locking point between the start and end times of a single response segment: ,in, This represents the load change corresponding to a response unit; Indicates the end time of the response. The corresponding vertical load value; Indicates the start time of the response. The corresponding vertical load value; Indicates the end time of the response; Indicates the start time of the response; and Both values ​​are vertical load monitoring values ​​from the same monitoring point, so subtracting them still represents the same type of vertical load change. If the sensor's original output is strain or wavelength drift, it should first be converted using calibration relationships. Then participate in the above calculations, without directly substituting different physical quantities into the formula;

[0036] For example, numbered The locking point yielded the following vertical load value changes during continuous sampling: 100, 104, 109, 115, 119, 118, 115. This invention identifies the change from 100 to 119 as a continuous load increase process, with the response start time corresponding to the sampling time at 100 and the response end time corresponding to the sampling time at 119. Substituting these values ​​into the above relationship yields... This forms a response unit; subsequently, the process from 119 to 115 is identified as a continuous unloading process, forming the next response unit. Through this process, multiple consecutive sampled values ​​are compressed into a response unit that reflects the load change process, while retaining the monitoring point number, response start and end time and load change direction required for subsequent judgment of the same source vertical load event.

[0037] When generating response units, this invention also eliminates minor fluctuations that do not meet the effective change conditions; for example, when a locking point exhibits small oscillations around a stable value such as 100, 100.2, 100.1, 100.3, this segment is not considered an independent response unit; only load changes that can reflect the continuous loading or unloading process are retained; this processing is not filtering in the general sense, but an engineering extraction method designed for the vertical load redistribution process of the locking structure, the purpose of which is to limit the subsequent analysis objects to load response segments that may reflect changes in the bearing relationship;

[0038] The aforementioned effective change conditions can be determined based on sensor resolution, no-load background fluctuations, historical fluctuation range under stable locking conditions, and equipment allowable errors, and should be written into the parameter table before monitoring the same batch. Specifically, in addition to requiring the load change amplitude to reach the effective change threshold, the change must also remain in the same or approximately the same direction within a continuous sampling interval of no less than a preset number of sampling points. If only a single sampling point jumps abruptly and the preceding and following sampling points do not form a continuous change trend, it is marked as transient interference, and no response unit is generated.

[0039] The final output of this step is a set of vertical load response units at the locking point. ,gather Each response unit in the system includes at least one monitoring point number. Response start time Response end time and load variation This set will serve as input for the next step, determining which response units belong to the same vertical load disturbance.

[0040] Step 102: Based on the time proximity relationship and load change among the response units in the vertical load response unit set of the locking point, the response units belonging to the same vertical load disturbance are grouped into the same source vertical load event, thereby obtaining the same source vertical load event set.

[0041] Specifically, firstly, all response units in the set of vertical load response units for the locking point are sorted according to their response start time; then, for any two response units, the time proximity is calculated based on their response start time and response end time, where the time proximity is the ratio between the common coverage of the two response units on the time axis and the overall coverage of the two response units from the earliest start to the latest end; next, the load participation ratio is calculated based on the absolute values ​​of the load changes of the two response units, where the load participation ratio is the ratio of the absolute value of the smaller load change of the two response units to the sum of the absolute values ​​of the load changes of the two response units;

[0042] Then, the product of the time proximity and the load participation ratio is used as the load event correlation between the two response units; the response unit with the earliest response start time that has not yet been assigned to any event is selected as the seed response unit; then, the response units that have not yet been assigned to the lock point vertical load response unit set are compared with the seed response unit in pairs. When the load event correlation between the two response units reaches the preset correlation condition, the corresponding response unit is assigned to the same candidate event as the seed response unit.

[0043] Then, using the response units already included in the candidate event as the expansion object, the load event correlation between the remaining response units in the locking point vertical load response unit set and any response unit in the candidate event is checked. When the load event correlation reaches the preset correlation condition, the corresponding response unit is assigned to the candidate event. Finally, when there are no new response units that can be assigned in the locking point vertical load response unit set, the candidate event is determined as a homogeneous vertical load event, and the next response unit that has not yet been assigned to the event and has the earliest response start time is selected as the new seed response unit. The merging process is repeated until all response units in the locking point vertical load response unit set are assigned.

[0044] More specifically, step 102 is based on the set of vertical load response units at the locking point. Forming a set of vertical load events from the same source This step directly uses the set output from the previous step. As the object of processing, collection Each response unit contains a monitoring point number. Response start time Response end time and load variation Step 101 has already converted the continuous vertical load curve into response units that can represent the local load change process. This step continues to use the time proximity and load participation relationships between these response units to group response units belonging to the same vertical load disturbance into the same source vertical load event. In other words, step 101 obtains a single locking point's load increase or decrease process within a certain time period. This step further determines whether these load increase or decrease processes of multiple locking points originate from the same vertical load redistribution.

[0045] When set Empty, or set If the data contains only invalid records due to missing data, sensor saturation, or calibration failure, this step will not output normal homogeneous vertical load events. If there is only one valid response unit in a certain period of time, this invention can retain it as a local load change event to indicate single-point anomaly or local force change, but will not use it directly to infer the overall load transfer relationship of the locking structure, so as to avoid deriving non-existent multi-point bearing relationship from single-point change.

[0046] In the riser locking structure of an offshore platform, the same vertical load disturbance usually does not manifest at only one locking point, but rather forms an interconnected response among multiple locking points. For example, when the platform heave causes an increase in the vertical load on the riser, some locking points may experience a synchronous increase in load. When the contact stiffness of a locking point decreases or becomes slightly loose, that locking point may exhibit a load reduction, while adjacent locking points may exhibit a compensatory load increase. Therefore, this step does not use "change in the same direction" as the sole merging criterion, but rather uses "belonging to the same disturbance range in time" and "both load change amplitudes reaching the effective participation level" as the merging criteria for events of the same origin. This can simultaneously cover common load increases, common load reductions, and load transfer scenarios with one increase and one decrease, which is more in line with the actual law of vertical load redistribution within the locking structure.

[0047] In specific implementation, the present invention first follows the response start time. For sets All response units in the set are sorted. After sorting, the earliest response unit that has not yet been assigned to any event is selected as the seed response unit for the candidate event. Subsequently, the present invention sequentially takes the set... The remaining response units whose affiliation has not yet been determined are compared in pairs with the seed response unit. During the comparison, it is first determined whether the durations of the two response units overlap or whether they are within the short delay range allowed by the same engineering disturbance. This short delay range can be obtained during the equipment commissioning phase through normal heave or tension adjustment processes. For example, when the riser is in a normal locking state, the multi-point response time distribution caused by a known tension adjustment action is recorded, and the main response time difference in this distribution is used as the time reference for merging. For locking points with fixed propagation delays, the response start time and response end time can be equivalently extended before comparison so that responses that are slightly sequential under the same disturbance can still be identified as related responses.

[0048] The temporal proximity of two response units is calculated using the concept of interval overlap. This calculation originates from the basic form of the interval intersection-union ratio in mathematics, which describes the proximity of two intervals on the time axis as the ratio between the overlap length and the total coverage length. This step applies this form to compare the durations of the two locking point response units to obtain the temporal proximity. ;

[0049] When calculating time proximity, if the response intervals of two response units do not overlap but the difference in their start times is within the allowable propagation delay range, a weak correlation can be performed using a delay-based correlation method. If the response interval length is zero, the joint interval length is zero, or the response start time is missing, then normal time proximity is not calculated, and the corresponding response unit is marked as a record to be reviewed. This process avoids the erroneous merging of events from the same source due to abnormal timestamps or excessively short sampling segments. When the above conditions are met, time proximity is calculated using the following formula: ,in, This indicates the temporal proximity of two response units; This indicates the start time of the response of the first response unit, derived from the set. The response unit in ; This indicates the end time of the response of the first response unit, derived from the set. The response unit in ; This indicates the start time of the response of the second response unit, derived from the set. Another response unit in ; This indicates the end time of the response of the second response unit, derived from the set. Another response unit in The numerator represents the shared temporal coverage of the two response units, set to 0 when there is no shared coverage; the denominator represents the overall coverage of the two response units from the earliest start to the latest end; since both the numerator and denominator are derived from the difference between response times... This is a proportional value. When the durations of the two response units highly overlap, Increase; when the time interval between two response units is large. Approaching 0;

[0050] After determining the time proximity, this invention further combines the load changes of the two response units to determine whether they are substantially involved in the same vertical load disturbance. This determination uses an amplitude participation relationship derived from the overlap ratio concept in classical similarity metrics, which uses the proportion of the smaller participation amount relative to the overall participation amount to measure whether two objects jointly participate in the same process. This step modifies this concept for the vertical load response at the locking point, forming a vertical load event correlation quantity. : ,in, This indicates the degree of correlation between two response units belonging to the same vertical load disturbance; This indicates the degree of time proximity obtained from the aforementioned formula; This represents the load change of the first response unit, derived from the set. The response unit in ; The load change of the second response unit originates from the set. Another response unit in In the formula and This indicates the relative strength of the two response units' participation in the load change. The denominator reflects the overall participation of both response units, used to reflect the combined participation of both. If the load change amplitudes of both response units are zero, or if neither reaches the effective change condition, then the general correlation degree is not calculated. This formula multiplies the degree of temporal proximity with the degree of load participation, requiring both response units to simultaneously meet the conditions of temporal proximity and effective load change in order to obtain a high degree of correlation. The formula uses absolute values ​​in the calculation because, in a locking structure, the redistribution of the same vertical load may manifest as simultaneous load increases at both locking points, or as load increases at one locking point and load decreases at the other. The directions of load changes do not cancel each other out in this formula, but are retained as a characteristic of the load-bearing relationship within the event after subsequent merging.

[0051] For example, sets There are two response units, the first response unit comes from the locking point. The duration is 10 to 20. The second response unit originates from the locking point. The duration is 12 to 22. Based on their time proximity, the common coverage range of the two response units is 12 to 20, and their overall coverage range is 10 to 22. Therefore... Next, calculate the load participation relationship. The smaller load change amplitude is 14, and the sum of the two load change amplitudes is 32. Therefore, the load participation ratio is... ,get The results indicate that significant vertical load changes occurred at both locking points within a similar timeframe, suggesting they can be considered as correlated responses within the same candidate event.

[0052] For example, locking points The duration of the response unit is 13 to 21 seconds. Its connection with the locking point When comparing response units, they are still within the same coverage area in terms of time, and It has a high degree of effective participation; although The direction of load change is Conversely, this relationship of increasing and decreasing loads is a typical manifestation of load transfer within the locking structure; therefore, this response unit can be... , They are all classified under the same source of vertical load event; conversely, if the locking point The response unit duration is 55 to 63. Although its load variation is large, its response time is much longer than that of the aforementioned response unit, and the calculated response time is... Approaching 0, corresponding to It also approaches 0, so it is not included in the aforementioned event, but is instead used as a candidate response unit for another subsequent event;

[0053] During the event merging process, this invention starts with the seed response unit and merges the events related to the seed response unit. Response units that meet the preset association conditions are grouped into the same candidate event; after being grouped, the system continues to use the response units already included in the candidate event as expansion objects to check the set. Between the remaining response units and any response unit within the candidate event If a response unit satisfies the association condition with any response unit within a candidate event, it is included in that candidate event; this extension method is suitable for chained response phenomena in locking structures, such as... First, increase the load. Then the load was increased. Even if the load is reduced again, and The time overlap is insufficient, as long as respectively with and A correlation is formed, and the three events can still constitute an event under the same vertical load disturbance. This candidate event continues to expand until the set... If no new response unit can be included, the present invention selects the next unincluded event with the earliest response start time as the new seed response unit, and repeats the above process until the set is complete. All response units in the system have been assigned a home address;

[0054] The time proximity threshold, load change similarity threshold, and minimum number of participating locking points used for event merging are jointly determined by the locking structure type, locking point spacing, load transfer path, and sampling frequency, and can be obtained through calibration during equipment debugging or historical stable operation. When the same response unit simultaneously meets the merging conditions of multiple candidate homogeneous events, this invention prioritizes merging it into the event with higher time overlap and greater load change participation. If it still cannot be distinguished, the conflict mark is retained, and the response unit is not used for subsequent load ratio calculation.

[0055] For ease of implementation, the event merging process can be understood as a field data processing process; assuming the set It contains four response units: locking points Between 10 and 20 Locking point Between 12 and 21 Locking point Between 13 and 22 Locking point Between 55 and 63 This invention first uses The corresponding response unit is used as a seed to calculate its relationship with... , , Between corresponding response units ;because , In terms of time and Since they are close in magnitude and the load change amplitudes all reach the effective participation level, they are classified into the same event. Because the time interval is too large, it is not included in this event; therefore, the present invention forms a single vertical load event, which includes... , , Three response units; subsequently, As new seed response units, they enter the next round of merging; through this process, the discrete response units output in step one are organized into homogeneous vertical load events with engineering implications.

[0056] For each generated vertical load event originating from the same source, this invention retains information on all response units within the event, including the monitoring point number of each response unit. Response start time Response end time and load variation The load increase and load decrease responses within an event retain their original signs and are not canceled out, as these signs will be used in the next step to distinguish between primary load, cooperative load, unloading transfer, or weak participation relationships. If a certain co-source vertical load event contains only a single response unit, the event can still be retained as a single-point vertical load event, but in the next step it is only used to represent the local load change at that locking point and does not form a load transfer relationship between multiple points independently.

[0057] This step ultimately outputs a set of events related to the same vertical load source. ,gather Each element in the set corresponds to a vertical load disturbance event, and each event is generated by one or more events from the set. It consists of response units, and fully retains the response units within the event. , , and This set will serve as input for the next step, used to determine the vertical bearing relationship between locking points within the same vertical load disturbance range.

[0058] Step 103: Determine the load participation of each locking point based on the load change of each response unit within the same event in the same set of vertical load events, and determine the load association strength and load transfer direction between each locking point based on the load participation, thereby forming the vertical load relationship of the locking structure.

[0059] Specifically, for any vertical load event in the set of vertical load events of the same origin, the load change of all response units in the event is extracted; and the ratio of the absolute value of the load change corresponding to a single locking point to the sum of the absolute values ​​of the load changes of all response units in the event is determined as the load participation degree of the locking point in the event.

[0060] Then, for any two locking points within the same event, the product of the load participation of the two locking points is used as the basic correlation term; when the load changes of the two locking points have opposite signs, a load transfer enhancement term equal to the basic correlation term is superimposed on the basic correlation term to obtain the load correlation strength; when the load changes of the two locking points have the same sign, the basic correlation term is used as the load correlation strength.

[0061] The load-bearing relationships are categorized based on the response start time: For locking points with positive load changes, if the response start time is earlier than other load-increasing locking points within the same event, the locking point is designated as the priority load-bearing point; for locking points with positive load changes, if the response start time is later than the priority load-bearing point within the same event, the locking point is designated as the cooperative load-bearing point; locking points with negative load changes are designated as load release points; when the load-bearing correlation strength between two locking points is higher than the preset transfer threshold and the load changes of the two locking points have opposite signs, the two locking points are designated as having a load transfer relationship, with the load transfer direction from the load-reducing locking point to the load-increasing locking point.

[0062] For all vertical load events in the set of events originating from the same source, determine the bearing relationship record corresponding to each event; then, according to the order of event occurrence, count the bearing participation of each locking point to obtain the long-term bearing ratio of each locking point during the monitoring period; then, according to the order of event occurrence, count the bearing correlation strength between each locking point to obtain the long-term bearing correlation strength.

[0063] Finally, when the same pair of locking points continuously have a load-bearing correlation strength higher than the preset correlation strength threshold in consecutive occurrences of the same source vertical load events, and the direction of load change is such that one locking point is unloaded while the other locking point is loaded, the same pair of locking points will be recorded as a continuous load migration path.

[0064] More specifically, step 103 is based on the set of vertical load events originating from the same source. Determine the vertical load-bearing relationship of the locking structure This step directly uses the set output from the previous step. As the object of processing, collection Each homogeneous vertical load event corresponds to a vertical load disturbance, and each event retains response unit information from step one, including the monitoring point number. Response start time Response end time and load variation After step 102, the present invention has merged the response units scattered on different locking points into the same vertical load disturbance range. Based on this, this step further analyzes the load division among the locking points within the same event, determines which locking points are the main load-bearing areas, which locking points are the cooperative load-bearing areas, which locking points are releasing load, and which locking points have load transfer relationships.

[0065] In the riser locking structure of an offshore platform, although multiple locking points jointly constrain the riser, they typically do not uniformly bear the vertical load during actual service. Differences in installation preload, contact surface wear, local stiffness differences, and contact degradation after long-term stress can all cause some locking points to participate in load bearing earlier, while others gradually reduce their participation. Especially within a single vertical load disturbance, if one locking point experiences a significant increase in load while another locking point experiences a decrease in load around the same time, it usually indicates that the vertical load is shifting from the decreasing area to the increasing area. If multiple locking points increase in load simultaneously, it means that these locking points share the newly added external vertical load; if multiple locking points decrease in load simultaneously, it means that these locking points are collectively in a load release state. Therefore, this step will consider the response units within the same event. symbol, Amplitude and The sequential relationships are combined to form the vertical load-bearing relationship of the locking structure. ;

[0066] In practical implementation, this invention reads the set one by one. The same vertical load events in the data; for any event, first extract the monitoring point numbers of all response units within that event. Response start time and load variation Within the same event Retaining the positive and negative signs, a positive value indicates that the locking point is loaded in the event, and a negative value indicates that the locking point is unloaded in the event; this invention first calculates the load participation degree of each locking point in the current event. This indicates the degree of participation of the locking point in the current vertical load redistribution process; load participation. The initial source is the idea of ​​local contribution ratio commonly used in engineering analysis, that is, the contribution of a local object to the overall process is represented by the proportion of a certain local change relative to the overall change. This step applies this idea to the process of redistributing the vertical load of the locking structure, and expands the participating objects from a single load increase to a load change in which both load increase and load decrease participate. Therefore, the absolute value of the load change is used in the calculation, so that both the load increase locking point and the load decrease locking point can be regarded as effective participating objects in this load redistribution.

[0067] When calculating the load participation ratio of each locking point, this invention first confirms that the same vertical load event contains at least two effective response units, and confirms that the load change of each response unit comes from the vertical load data after calibration conversion; if the sum of the absolute values ​​of the load changes of all locking points in a certain event is zero, or only invalid load changes exist, then the normal load participation ratio is not calculated; for events that can be calculated normally, the participation ratio corresponding to each locking point should be between 0 and 1, and the sum of the participation ratios of all effective locking points in the same event should be 1; when the above conditions are met, the load participation is calculated according to the following formula: ,in, Indicates the first event within the current same-source vertical load event. The load-bearing participation of each locking point; Indicates the first event within the current event The load change of each response unit originates from the set The response unit retains ; Indicates the total number of response units contained in the current event; This represents the sum of the absolute values ​​of the load changes of all response units within the current event. This formula is derived from the local contribution ratio form. The numerator represents the participation of a single locking point in the current load change process, and the denominator represents the total participation of all locking points in the current event. Since both the numerator and denominator are composed of the absolute values ​​of similar load changes... This indicates a proportional relationship. This treatment ensures that both load increases and decreases within the same event are included in the load-bearing relationship analysis, without weakening the load transfer process due to positive and negative cancellation.

[0068] For example, locking points of Locking point of Locking point of Locking point of The sum of the absolute values ​​of all load changes during this event is 52. of , of , of , of Therefore, it can be concluded that and These are the key points of control with a high degree of involvement in this incident, among which As the main load-adding area, This is the main area for load reduction;

[0069] Gaining participation Subsequently, the present invention further determines the load-bearing correlation strength between locking points. Bearing correlation strength The fundamental basis is the concept of joint contribution in collaborative contribution analysis, which states that the strength of two objects' joint participation in the same process can be represented by the product of their respective degrees of participation. This step modifies this joint contribution form for locking structures: in addition to the basic joint participation term, a load transfer enhancement term is added, highlighting the combination of one increasing and one decreasing locking points. The engineering basis for this modification is that early abnormal vertical loads in locking structures often manifest as a load reduction at one locking point and a compensatory load increase at another; this relationship of one increasing and one decreasing better reflects the migration of internal load-bearing paths. ,in, Indicates the locking point within the current same-source vertical load event. With locking point The strength of the load-bearing correlation between them; Indicates locking point The carrying capacity participation rate is calculated using the aforementioned formula; Indicates locking point The carrying capacity participation rate is calculated using the aforementioned formula; Indicates locking point With locking point Load transfer markers between, when and The expression takes the value 1 when the signs are opposite and 0 when the signs are the same. This expression is first passed through... This indicates the degree to which two locking points participate in the same event, and then through... Strengthen the transfer relationship with opposite directions of load change; due to , as well as All are proportions or marked quantities. This indicates the strength of the correlation. The previous formula yielded... and As input to this formula, a derivation relationship is formed between the two formulas, from "single-point participation" to "two-point bearing association";

[0070] Continuing with the above example, the locking point of Locking point of ,and Increased load, Reduced load, therefore ,get ,Right now Locking point and Both are additional loads, therefore ,get ,Right now In this incident, Higher than ,illustrate and The relationship between them is closer to a load transfer relationship, while and The relationships between them are closer to those of collaborative load-bearing; through this calculation, the loading area, unloading area, and collaborative load-bearing area in the same event can be distinguished;

[0071] In determining Subsequently, the present invention incorporates the response start time. The bearing relationships are specifically categorized; for For positive and Higher locking points, if their If the loading and locking point is earlier than other loading and locking points within the same event, it is determined as the priority loading point; for For positive but The later locking point is designated as the cooperative bearing point; for negative and The higher locking point is designated as the load release point; for Negative and between a certain load-locking point A higher locking point establishes a load transfer relationship between the two, with the direction from the unloading locking point to the loading locking point. For Locking points that are low-frequency and only appear at the edge of events over a long period are recorded as weakly involved locking points; the above classifications are all based on sets. The existing internal events in China , and Confirmed, the classification results are consistent with the aforementioned and The calculation results are consistent;

[0072] The high participation ratio threshold, load transfer coefficient threshold, weak participation threshold, and load migration judgment conditions used for load relationship classification can all be determined based on the design load range of the locking structure, the allowable deviation of the installation preload, and historical normal locking samples. If the participation ratio and load transfer coefficient of a certain locking point are both lower than the weak participation threshold for a long period of time, it is classified as insufficient load or low locking contribution. If there is a continuous combination of increasing and decreasing participation ratios between adjacent locking points, it is classified as potentially having load migration. If there is only a slight change in a single event and no continuous trend is formed, it is only recorded as background disturbance and the abnormal locking state is not directly output.

[0073] For example, locking point in an event exist Start unloading. Locking point exist Start loading. Between the two If the value is high, the system will record it. to There is a single load transfer relationship. If this relationship recurs in subsequent events... Reduce load, Increased load, and between the two A consistently high level indicates a problem with the locking structure. The vertical bearing capacity of the area is increasing. The location of the area is shifted; this result can reflect the change in the internal bearing path when the total vertical load does not change significantly, and is particularly suitable for identifying early states such as locking point contact degradation, preload decay or partial loss of bearing capacity;

[0074] This invention relates to a set The above process is repeated for each vertical load event originating from the same source; for each event, a load-bearing relationship record is generated, including the load-bearing participation degree of each locking point. The load-bearing correlation strength between locking points Priority bearing point, cooperative bearing point, load release point, weakly involved locking point, and load transfer direction; for the same locking point relationship that occurs repeatedly in multiple events, this invention is based on the number of times the event occurs and The continuous performance is summarized to form the vertical load-bearing relationship of the locking structure. For example, if It showed high performance in most events. Loading point, then Recorded as the primary carrying area; if In most cases If the load point is low or consistently low, then Recorded as a region of reduced load-bearing capacity; if to If the load transfer relationship repeats in multiple events, then that direction is recorded as the stable load migration direction;

[0075] This step ultimately outputs the vertical load-bearing relationship of the locking structure. ; From set The derivation of all common vertical load events includes the load participation of each locking point in different events, the cooperative load-bearing relationship between locking points, the load release relationship, and the load transfer relationship; This will serve as input for the next step, used to output the locking status monitoring results, abnormal locking point locations, and vertical load distribution results.

[0076] Step 104: Obtain the locking status monitoring results based on the vertical bearing relationship of the locking structure.

[0077] Specifically, firstly, locking points are sorted from highest to lowest according to their long-term load-bearing ratio, and the locking points with the highest ratios are selected. The number of selected locking points is determined by the design load-bearing zoning of the locking structure. The sum of the long-term load-bearing ratios of the selected locking points is used as the locking concentration index. Then, when the locking concentration index is within the range corresponding to the normal locking state and there is no continuous load migration path with continuously increasing load-bearing intensity, a stable locking state is output. When the locking concentration index is higher than the range corresponding to the normal locking state and the main load-bearing effect is concentrated on the selected locking points, an off-center locking state is output. When the long-term load-bearing ratio of a certain locking point continues to decrease and the load transfer direction of the locking point points to another locking point, the area corresponding to the locking point is output as having a load-bearing degradation trend. When the load participation of a certain locking point is continuously lower than the weak participation threshold in consecutive occurrences of the same source vertical load events and the long-term load-bearing ratio of adjacent locking points continues to increase, the area corresponding to the locking point is output as having a local failure risk.

[0078] More specifically, step 104 is based on the vertical load-bearing relationship of the locking structure. Output locking status monitoring results This step directly uses the vertical load-bearing relationship of the locking structure output in the previous step. As the processing object; step 103 has already established the load-bearing participation status of each locking point, the cooperative load-bearing relationship between locking points, the load release relationship, and the load transfer relationship within the scope of multiple co-originating vertical load events, and in the load-bearing relationship The load-bearing participation of each locking point is retained. The load-bearing correlation strength between the locking point and the locking point Therefore, this step utilizes the bearing relationship. Based on the established long-term load-bearing patterns, determine the current locking state of the locking structure and output the locking state monitoring results. And the corresponding vertical load distribution results;

[0079] Locking status monitoring results in this step It outputs the overall stress state of the locking structure, rather than a simple indication of the sensor's own operating state; generating At the same time, the system synchronously saves the number of vertical load events of the same origin involved in the judgment, the number of effective locking points, the monitoring time period, the number of missing locking points, and the load relationship. The version information allows subsequent alarms, maintenance, and verification to trace back to the specific data source.

[0080] The engineering monitoring objective of the riser locking structure on an offshore platform is to determine whether the locking structure still maintains a reasonable vertical load distribution, rather than simply judging whether a single load change exceeds the limit. When multiple locking points share the vertical load of the riser, under normal conditions, each locking point will participate in the load-bearing according to the installation preload, contact stiffness, and structural arrangement. When a locking point gradually withdraws from bearing the load due to wear, preload decay, or contact degradation, the vertical load it bears will transfer to other locking points. At this time, the total vertical load may not change significantly, but the load-bearing relationship... The process will exhibit a decrease in the long-term engagement of some locking points, an increase in the long-term engagement of others, and a continuous enhancement of load transfer relationships in specific directions; therefore, this step will focus on the load-bearing relationship. The results are converted into engineering-readable locking states, with a focus on identifying risks of load concentration, load reduction, load migration, and local failure.

[0081] In practical implementation, the present invention first reads the bearing relationship. Bearing participation of each locking point in multiple co-current vertical load events The same locking point may have different values ​​in different events. The present invention saves the locking point according to the order of event occurrence. The sequence is used to determine the long-term load percentage of the locking point during the monitoring period. Long-term carrying capacity ratio It is possible to apply the same locking point to multiple events The average value can be used to obtain the data, or a higher weight can be assigned to the most recent monitoring period during project implementation to reflect the current service status; here... This still represents the load participation degree within a single vertical load event originating from the same source in step three. Indicates that there are multiple events The percentage of long-term load during the monitoring period obtained from statistics is used to characterize the stability of each locking point in bearing vertical load during the monitoring period;

[0082] Subsequently, the present invention reads the bearing relationship. The load-bearing correlation strength In addition, regarding load transfer relationships, for the same pair of locking points, the system saves their positions in multiple vertical load events originating from the same source, according to the order of event occurrence. The sequence is used to determine the long-term load-bearing correlation strength. Long-term load-bearing correlation strength This can be achieved by applying the same pair of locking points in multiple events. Statistical analysis is performed to characterize the persistence of the load transfer relationship between the two locking points; if a high load transfer relationship repeatedly occurs between two locking points in multiple events... If the load change direction consistently exhibits a pattern of load reduction at one locking point and load increase at another, then the path between these two points is recorded as the continuous load migration path; for example, if the locking point... In multiple events, this manifested as load reduction and locking points. In the same event, it manifests as overloading, and If the load remains high, the system records the load from the locking point. Corresponding area to locking point Corresponding area migration; this process directly utilizes the carrying capacity relationship formed in step three. The original load curve is not reprocessed.

[0083] In order to transform the long-term load distribution into a determinable locking state result, this step uses the locking concentration index. The initial source of this indicator is the cumulative contribution evaluation concept commonly used in structural health monitoring and reliability analysis. This concept determines whether the system's main role is played by a few objects by assessing the cumulative proportion of major contributing objects. This step applies this concept to the monitoring of vertical load distribution in locking structures, specifically limiting "contributing objects" to load-bearing relationships. The locking points with the highest proportion of medium and long-term load are used to evaluate whether the vertical load is abnormally concentrated in a few locking points;

[0084] Locking Concentration Index The normal range can be determined through historical samples of the locking structure under qualified installation, qualified pre-tightening, and stable load-bearing conditions, or it can be preset according to the design allowable load distribution range. When the number of effective events used to calculate the average participation ratio is insufficient, some key locking points are missing for a long time, or the average participation ratio cannot cover the main load-bearing area, the system will not output a normal locking conclusion, but will output a message indicating insufficient data or insufficient monitoring coverage. When the above conditions are met, the locking concentration index is calculated according to the following formula: ,in, Indicates the concentration index; This indicates the order of the children's numbers after being sorted from highest to lowest according to their long-term carrying capacity percentage. The long-term load-bearing ratio corresponding to each locking point is derived from the load-bearing relationship. The locking point is within the monitoring period Statistical results; This represents the number of locking points used to evaluate the main load-bearing area, determined by the design load-bearing zones of the locking structure, with the preferred number being the number of locking points contained within the main load-bearing area. This formula is derived from the cumulative contribution evaluation form, with the numerator being the sum of the locking points from the main load-bearing area. This indicates the proportion of the main load-bearing area, and the overall result is used to represent the concentration of vertical loads at the main locking points; because For the long-term carrying capacity ratio, It also indicates a proportional relationship;

[0085] For example, a certain locking structure has 8 locking points, and the load-bearing relationship is... The statistics show that the long-term load-bearing ratio of each locking point is ranked as follows: , , , The remaining locking points are all below 0.08. If the first four locking points are taken as the main load-bearing area in the design of this locking structure, then substituting them yields... This result indicates that the main load-bearing area bears the majority of the vertical load, and this invention compares it with the load concentration level under normal locking conditions; if the current If the load is significantly higher than the baseline range under normal locking conditions, it is determined that there is a tendency for load concentration.

[0086] Locking Concentration Index It is used to determine whether the load is concentrated, but the determination of the locking state also needs to be combined with the bearing relationship. The load migration path in the process; the present invention outputs the locking state monitoring results in the following manner. :when Within the range corresponding to the normal locking state, and the load-bearing relationship. When no continuously increasing load migration path appears, the output is in a stable locked state; when When the load is increased and the main load-bearing area is concentrated in a few locking points, the output is in an off-center locking state; when a certain locking point bears a large proportion of the load for a long period of time... When the load continues to decrease and the corresponding load transfer relationship points to other locking points, the output indicates that the area corresponding to the locking point has a load degradation trend; when a locking point is continuously in a weak participation state in multiple events and the proportion of load borne by surrounding locking points continues to increase, the output indicates that the area corresponding to the locking point has a risk of local failure.

[0087] For example, during continuous monitoring, bearing relationship Display locking point Long-term carrying capacity ratio It decreased from 0.14 to 0.04, while to Long-term load-bearing correlation strength It remains high, and Long-term carrying capacity ratio If the value continues to rise, the system outputs a lockout point. The corresponding area's load-bearing capacity decreases, and the vertical load is directed towards the locking point. The monitoring results of migration in the corresponding region; if the locking concentration index is calculated simultaneously. If the value exceeds the range corresponding to the normal locking state, then the off-center locking state will be output, and... Mark the abnormal locking point location, and Marked as a region of concentrated load;

[0088] For ease of use in the field, this step will monitor the locking status results. The information is organized to be directly used for inspections and alarms. Results At a minimum, it includes the locking state category, abnormal locking point location, and vertical load distribution results; wherein, the locking state category is used to indicate whether the current locking structure is stable locking, off-center locking, load degradation, or at risk of local failure; the abnormal locking point location is determined by the load relationship. Locking point numbering for medium- to long-term weak participation, continuous load reduction, or continuous outward transfer of load. The vertical load distribution is determined by the long-term load-bearing ratio of each locking point and the main load migration path. For example, the system can output the locking points. , For the main load-bearing area, locking point , To coordinate the carrying area, locking points To support the weakened area, the main load migration direction is... When the locking status category reaches the preset alarm conditions, the system generates an alarm or inspection prompt to remind maintenance personnel to check the corresponding locking point.

[0089] This step ultimately outputs the monitoring results of the locking status. ,result Vertical load-bearing relationship of the locking structure The derivation yields locking status categories, abnormal locking point locations, vertical load distribution results, and alarm or inspection prompts. This output completes the conversion from distributed vertical load response to locking status monitoring results, enabling the monitoring system to identify the risk of off-center loading, degradation, or local failure of the locking structure based on changes in the load-bearing relationship when the total vertical load does not change significantly.

[0090] Output locking status monitoring results It can write to the locking structure operation record and be used to trigger alarms, maintenance prompts, or retesting processes; in the next monitoring cycle, the present invention continues to read the new vertical load response unit and compares the new average participation ratio, load transfer coefficient, locking concentration index, and abnormal locking point position with the results of the previous cycle; if the abnormal concentration level continues to increase or the abnormal locking point position remains unchanged, the abnormal level is increased; if it returns to the normal range and continues to meet the stability conditions, the abnormal level is reduced or the prompt is lifted.

[0091] In practical applications, in one embodiment, the locking structure includes six locking points. to This invention identifies three identical vertical load events within the same monitoring period and calculates the load change at each locking point during the event. , carrying participation The load-bearing correlation strength between the locking points of the opposite sign and the opposite sign The average participation rate after summarizing the three events is shown in the table below; the data in this embodiment are used to illustrate steps three and four. , , , and the locking concentration index The correspondence between them;

[0092]

[0093] As shown in the table above, load redistribution mainly occurs in... , and The three locking points have a cumulative average load participation rate of 0.812, which is the locking concentration index during the current monitoring period. The value is 0.812; further examination reveals the relationship between opposite sign load changes in each co-originating vertical load event, specifically in event E2. to The load-bearing correlation strength is 0.234 in event E3. to The load-bearing correlation strength is 0.259, indicating that... It continues to exhibit a load reduction node. The nodes consistently exhibit load-increasing behavior, with recurring load migration paths existing between them; based on the ranking results of average load participation, As the main load-bearing area, Although participation was high, its The total is negative, therefore it is identified as a source of load release and migration; this embodiment illustrates that the present invention does not rely solely on whether a single point load exceeds the limit for alarm, but rather on the same source event... , and a summary of multiple events Identify load concentration and load migration status;

[0094] Figure 4 This illustrates the distribution of the average load-bearing participation at each locking point in this embodiment; by Figure 4 visible, , and It constitutes the main area of ​​change, and Although it has a high level of participation, its The total is negative, therefore it cannot be simply interpreted as a high load-bearing point. Instead, it should be judged as a load migration source in conjunction with the load sign and the load-bearing associated strength. This figure, together with the table above, illustrates the locking concentration index. This reflects the degree of concentrated participation of multiple locking points in the same vertical load event. When outputting the locking status monitoring results, it is necessary to combine the participation ranking, load change direction and repeated migration path to jointly determine the risk location.

[0095] The second embodiment of the present invention relates to a distributed monitoring system for vertical loads in a structural locking state. Please refer to [link to relevant documentation]. Figure 2 ,include:

[0096] The response unit forming module is used to acquire the vertical load monitoring data corresponding to each locking point in the locking structure collected by each distributed monitoring point on the locking structure, and to obtain the set of vertical load response units for the locking point based on the vertical load monitoring data. The vertical load response unit for the locking point includes the monitoring point number, response start time, response end time and load change amount.

[0097] The same-source event merging module is used to merge response units belonging to the same vertical load disturbance into same-source vertical load events based on the time proximity relationship and load change amount among the response units in the set of vertical load response units at the locking point, thereby obtaining a set of same-source vertical load events.

[0098] The load-bearing relationship determination module is used to determine the load participation degree of each locking point based on the load change of each response unit in the same event in the same set of vertical load events from the same source, and to determine the load association strength and load transfer direction between each locking point based on the load participation degree, thereby forming the vertical load-bearing relationship of the locking structure;

[0099] The locking status monitoring result output module is used to obtain the locking status monitoring result based on the vertical load relationship of the locking structure. The locking status monitoring result includes the locking status category, the location of abnormal locking points, and the vertical load distribution result.

[0100] It is not difficult to see that this embodiment is a system implementation corresponding to the first embodiment, and this embodiment can be implemented in conjunction with the first embodiment. The relevant technical details mentioned in the first embodiment are still valid in this embodiment, and will not be repeated here to reduce repetition. Accordingly, the relevant technical details mentioned in this embodiment can also be applied to the first embodiment.

[0101] It is worth mentioning that all modules involved in this embodiment are logical modules. In practical applications, a logical unit can be a physical unit, a part of a physical unit, or a combination of multiple physical units. Furthermore, to highlight the innovative aspects of this invention, this embodiment does not introduce units that are not closely related to solving the technical problem proposed by this invention; however, this does not mean that other units are absent from this embodiment.

[0102] The third embodiment of the present invention relates to an electronic device; please refer to [link / reference]. Figure 3 ,include:

[0103] At least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the above-described distributed monitoring method for vertical loads in a structural locking state.

[0104] The memory and processor are connected via a bus, which can include any number of interconnecting buses and bridges, connecting various circuits of one or more processors and memories. The bus can also connect various other circuits, such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and will not be described further herein. The bus interface provides an interface between the bus and the transceiver. The transceiver can be a single element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices over a transmission medium. Data processed by the processor is transmitted over the wireless medium via an antenna, which further receives data and transmits it to the processor.

[0105] The processor manages the bus and general processing, and also provides various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. Memory is used to store data used by the processor during operation.

[0106] The fourth embodiment of the present invention relates to a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above-described method embodiments.

[0107] That is, those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. This program is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0108] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this invention should still be covered by the claims of this invention.

Claims

1. A distributed monitoring method for vertical loads in a structural locking state, characterized in that, Includes the following steps: The vertical load monitoring data of each locking point in the locking structure is collected by each distributed monitoring point on the locking structure, and a set of vertical load response units for the locking points is obtained based on the vertical load monitoring data. The vertical load response units for the locking points include each monitoring point number, response start time, response end time, and load change amount. Based on the time proximity relationship and load change among the response units in the set of vertical load response units at the locking point, response units belonging to the same vertical load disturbance are grouped into the same source vertical load event, thereby obtaining the set of the same source vertical load event. The load participation of each locking point is determined based on the load change of each response unit within the same event in the same set of vertical load events from the same source, and the load association strength and load transfer direction between each locking point are determined based on the load participation, thereby forming the vertical load relationship of the locking structure. The locking state monitoring results are obtained based on the vertical load relationship of the locking structure, wherein the locking state monitoring results include the locking state category, the location of abnormal locking points, and the vertical load distribution results.

2. The method for distributed monitoring of vertical loads in a structural locking state according to claim 1, characterized in that: The set of locking point vertical load response units obtained based on the vertical load monitoring data includes: The vertical load monitoring data of each locking point is scanned in chronological order of acquisition time, and the load segments that change continuously in the same direction are identified as the vertical load response units of the locking points, thus obtaining the set of vertical load response units of the locking points.

3. The method for distributed monitoring of vertical loads in a structural locking state according to claim 2, characterized in that: After acquiring the vertical load monitoring data corresponding to each locking point in the locking structure from the distributed monitoring points on the locking structure, and before scanning the vertical load monitoring data of each locking point in chronological order of acquisition time, the method further includes: The validity of the vertical load monitoring data at each locking point is verified. The validity verification includes determining whether the sampling time is continuous, whether there is time reversal, whether the load sensor is in the saturation range, whether the sensor calibration coefficient is missing, and whether the original signal exceeds the allowable measurement range of the equipment. For data segments that fail validity verification, record the corresponding locking point number and time range, and do not write the data segments that fail validity verification as locking point vertical load response units into the locking point vertical load response unit set.

4. The method for distributed monitoring of vertical loads in a structural locking state according to claim 2, characterized in that: The process of scanning the vertical load monitoring data of each locking point in chronological order of acquisition time, and identifying continuous load segments exhibiting the same direction of change as the vertical load response unit of the locking point, includes: The vertical load monitoring data of each locking point is scanned in chronological order of collection time. When adjacent sampled values ​​show the same direction of change, the load segment that shows the same direction of change is determined as a load change process. When the direction of change reverses or the magnitude of change falls below the preset effective change condition, the current load change process ends and a locking point vertical load response unit is generated. The preset effective change condition is that the load change amplitude reaches the effective change threshold and the load change remains in the same direction within a continuous sampling interval of no less than the preset number of sampling points.

5. The method for distributed monitoring of vertical loads in a structural locking state according to claim 1, characterized in that: The step of grouping response units belonging to the same vertical load disturbance into co-originating vertical load events based on the time proximity and load change among the response units in the set of vertical load response units at the locking point includes: All response units in the set of vertical load response units at the locking point are sorted according to the response start time, and for any two response units, the time proximity is calculated based on the response start time and response end time of the two response units. The load participation ratio is calculated based on the absolute value of the load change of the two response units, and the product of the time proximity and the load participation ratio is used as the load event correlation quantity between the two response units. The response unit with the earliest response start time that has not yet been assigned to any event is selected as the seed response unit. Then, the response units in the set of vertical load response units of the locking point that have not yet been assigned to the seed response unit are compared in pairs. Based on the comparison results, the response units that meet the preset association conditions are assigned to the same candidate event as the seed response unit. Using the response units already included in the candidate events as the expansion objects, check the load event correlation between the remaining response units in the locking point vertical load response unit set and any response unit in the candidate events. When the load event correlation reaches the preset correlation condition, the corresponding response unit is included in the candidate events. When there are no new response units that can be assigned to the set of vertical load response units at the locking point, the candidate event is determined as a homogeneous vertical load event, and the next unassigned event with the earliest response start time is selected as the new seed response unit. The merging process is repeated until all response units in the set of vertical load response units at the locking point are assigned.

6. The method for distributed monitoring of vertical loads in a structural locking state according to claim 1, characterized in that: The determination of the load participation degree of each locking point based on the load change of each response unit within the same event in the set of homogeneous vertical load events includes: For any vertical load event in the set of vertical load events of the same origin, the load change of all response units in the event is extracted, and the load participation of the locking point in the event is determined according to the absolute value of the load change corresponding to a single locking point and the absolute value of the load change of all response units in the event.

7. A method for distributed monitoring of vertical loads in a structural locking state according to claim 6, characterized in that: The step of determining the load-bearing correlation strength and load transfer direction between each locking point based on the load-bearing participation degree, thereby forming the vertical load-bearing relationship of the locking structure, includes: For any two locking points within the same event, the product of the load participation of the two locking points is used as the basic correlation term, and the load correlation strength is determined based on the basic correlation term and the load change of the two locking points. The load-bearing relationships are categorized based on the start time of the response, and each locking point is determined as a priority load-bearing point, a cooperative load-bearing point, and a load release point based on the categorization results. The load transfer relationship is also defined, wherein the load transfer direction of the load transfer relationship is from the load reduction locking point to the load increase locking point. For all the same-source vertical load events in the set of same-source vertical load events, determine the bearing relationship record corresponding to each event; The load participation of each locking point is statistically analyzed according to the order of events. The long-term load ratio of each locking point during the monitoring period is obtained based on the statistical results. The load correlation strength between each locking point is statistically analyzed according to the order of events. The long-term load correlation strength is obtained based on the statistical results. When the same pair of locking points continuously have a load-bearing correlation strength higher than the preset correlation strength threshold in consecutive occurrences of the same source vertical load events, and the direction of load change is such that one locking point is unloaded while the other locking point is loaded, the same pair of locking points are recorded as a continuous load migration path.

8. A method for distributed monitoring of vertical loads in a structural locking state according to claim 7, characterized in that: The process of obtaining the locking status monitoring result based on the vertical bearing relationship of the locking structure includes: Sort the long-term load-bearing ratio of each locking point from high to low, select the locking point with the highest load-bearing ratio, and use the sum of the long-term load-bearing ratios of the selected locking points as the locking concentration index. When the locking concentration index is within the range corresponding to the normal locking state and there is no continuous load migration path with continuously increasing load-bearing strength, a stable locking state is output; when the locking concentration index is higher than the range corresponding to the normal locking state and the main load-bearing effect is concentrated at the selected locking point, an off-center locking state is output. When the long-term load-bearing ratio of a certain locking point continues to decrease and the load transfer direction of the locking point points to another locking point, the output shows that the load-bearing capacity of the corresponding area of ​​the locking point is degraded; when the load-bearing participation of a certain locking point is continuously lower than the weak participation threshold in consecutive occurrences of the same source vertical load events and the long-term load-bearing ratio of adjacent locking points continues to increase, the output shows that the corresponding area of ​​the locking point is at risk of local failure.

9. A distributed monitoring system for vertical loads in a structural locking state, characterized in that: include: The response unit forming module is used to acquire the vertical load monitoring data corresponding to each locking point in the locking structure collected by each distributed monitoring point on the locking structure, and to obtain a set of vertical load response units for the locking points based on the vertical load monitoring data. The vertical load response units for the locking points include each monitoring point number, response start time, response end time, and load change amount. The same-source event merging module is used to merge response units belonging to the same vertical load disturbance into same-source vertical load events based on the time proximity relationship and load change amount among the response units in the locking point vertical load response unit set, thereby obtaining the same-source vertical load event set. The load-bearing relationship determination module is used to determine the load participation degree of each locking point based on the load change of each response unit in the same event in the same set of vertical load events, and to determine the load association strength and load transfer direction between each locking point based on the load participation degree, thereby forming the vertical load-bearing relationship of the locking structure. The locking status monitoring result output module is used to obtain the locking status monitoring result based on the vertical load relationship of the locking structure. The locking status monitoring result includes the locking status category, the location of abnormal locking points, and the vertical load distribution result.

10. An electronic device, characterized in that, include: At least one processor; as well as, A memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the distributed monitoring method for vertical loads in the structural locking state as described in any one of claims 1 to 8.

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