Pile breakage detection method and device, electronic equipment and storage medium

Abstract

The application provides a broken pile detection method and device, electronic equipment and a storage medium, and belongs to the technical field of engineering nondestructive testing. The method comprises the following steps: synchronously acquiring three types of data of holding current, grouting pressure and drill rod vibration at a first acquisition frequency, and calculating the holding current drop amplitude, the grouting pressure drop amplitude and the drill rod vibration frequency growth based on the three types of data. If the above indexes meet the over-limit early warning condition, the current drill rod drilling depth is acquired, and the second acquisition frequency is switched to to supplement the same type of data. The target parameter early warning threshold set is determined based on the soil property data corresponding to the current drilling depth. The three types of data acquired before and after the acquisition and the target parameter early warning threshold set are fused, and the broken pile risk probability is calculated. When the broken pile risk probability reaches the preset broken pile alarm probability threshold, the broken pile alarm information is generated. The application can realize timely identification and accurate early warning of the broken pile risk.

Description

Technical Field

[0001] This application belongs to the field of engineering non-destructive testing technology, and more specifically, relates to methods and devices for detecting broken piles, electronic equipment, and storage media. Background Technology

[0002] Cement-fly ash-gravel (CFG) piles, as core components of composite foundation treatment, are widely used in foundation reinforcement construction for buildings, transportation, and other engineering projects. The integrity of the pile body directly determines the bearing capacity of the composite foundation and the safety of the engineering structure. Pile breakage is a typical and highly concealed quality defect in CFG pile construction, referring to the phenomenon where the continuity of the pile body is interrupted during the pile formation process due to factors such as geological conditions and improper control of construction parameters.

[0003] In existing technologies, CFG pile construction quality monitoring largely relies on traditional testing systems (such as the TCF900 composite foundation quality management system). These systems can collect foundation construction parameters such as pile driving depth and verticality in real time, providing data support for construction process control. However, for hidden quality problems such as pile breakage, existing technologies lack specialized pile breakage identification functions and cannot assess the risk of pile breakage in real time. Pile breakage can only be detected after pile completion through post-construction testing methods such as low-strain detection, by which time the opportunity for on-site remediation has been missed. Summary of the Invention

[0004] The purpose of this application is to provide a method and device for detecting broken piles, electronic equipment, and storage medium to achieve real-time detection of the risk of broken piles.

[0005] A first aspect of this application provides a method for detecting broken piles, including:

[0006] The first bearing current data, the first grouting pressure data, and the first drill pipe vibration data are synchronously acquired based on the first acquisition frequency for the first time period; the bearing current decrease is calculated based on the first bearing current data, the grouting pressure decrease is calculated based on the first grouting pressure data, and the drill pipe vibration frequency increase is calculated based on the first drill pipe vibration data.

[0007] If the decrease in bearing current, the decrease in grouting pressure, and the increase in drill pipe vibration frequency meet the over-limit warning conditions, then the current drill pipe drilling depth is obtained, and the second bearing current data, the second grouting pressure data, and the second drill pipe vibration data for the second time period are simultaneously obtained based on the second acquisition frequency; the second acquisition frequency is greater than the first acquisition frequency; the first time period is before the second time period;

[0008] Determine the target parameter early warning threshold set based on the soil characteristic data corresponding to the current drill pipe drilling depth;

[0009] The probability of pile breakage risk is determined based on the first bearing current data, the second bearing current data, the first grouting pressure data, the second grouting pressure data, the first drill rod vibration data, the second drill rod vibration data, and the target parameter early warning threshold set.

[0010] If the probability of pile breakage reaches the preset pile breakage alarm probability threshold, a pile breakage alarm message will be generated.

[0011] A second aspect of this application provides a broken pile detection device, comprising:

[0012] The low-frequency data analysis module is used to synchronously acquire first bearing current data, first grouting pressure data and first drill pipe vibration data for a first time period based on a first acquisition frequency; calculate the bearing current decrease based on the first bearing current data, calculate the grouting pressure decrease based on the first grouting pressure data, and calculate the drill pipe vibration frequency increase based on the first drill pipe vibration data.

[0013] The high-frequency data acquisition module is used to acquire the current drilling depth of the drill pipe and simultaneously acquire the second bearing current data, second grouting pressure data, and second drill pipe vibration data for a second time period based on the second acquisition frequency if the decrease in bearing current, the decrease in grouting pressure, and the increase in drill pipe vibration frequency meet the over-limit warning conditions; the second acquisition frequency is greater than the first acquisition frequency; the first time period is before the second time period;

[0014] The dynamic threshold determination module is used to determine the target parameter warning threshold set based on the soil characteristic data corresponding to the current drill pipe drilling depth;

[0015] The pile breakage risk analysis module is used to determine the probability of pile breakage risk based on the first bearing current data, the second bearing current data, the first grouting pressure data, the second grouting pressure data, the first drill rod vibration data, the second drill rod vibration data, and the target parameter early warning threshold set.

[0016] The broken pile alarm module is used to generate a broken pile alarm message if the probability of broken pile risk reaches a preset broken pile alarm probability threshold.

[0017] A third aspect of this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor executes the computer program to implement the steps of the above-described broken pile detection method.

[0018] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the above-described broken pile detection method.

[0019] The beneficial effects of the broken pile detection method and device, electronic equipment, and storage medium provided in this application embodiment are as follows:

[0020] This application embodiment enables real-time monitoring and accurate identification of pile breakage. This embodiment simultaneously collects three types of data directly related to pile breakage: bearing current, grouting pressure, and drill rod vibration. Initially, routine monitoring is performed at a conventional first acquisition frequency. Once abnormal data is detected and meets the warning conditions, the system switches to a higher second acquisition frequency to supplement data collection. This ensures the efficiency of daily construction monitoring while obtaining more complete and accurate core data when pile breakage is suspected, providing solid support for subsequent judgment and avoiding missed or incorrect diagnoses.

[0021] The detection method of this application is adaptable to different construction environments and can improve the reliability of pile breakage judgment. This application's embodiment determines the target parameter warning threshold by combining soil characteristic data corresponding to the current drill rod drilling depth. Considering the differences in the impact of different soil layers on construction parameters, the judgment standard is made to fit the actual construction scenario, avoiding misjudgment problems caused by a uniform standard, and ensuring accurate identification of pile breakage risks under different geological conditions.

[0022] This application's embodiment can scientifically quantify the risk of pile breakage, buying time for subsequent handling. This embodiment does not simply determine pile breakage based on a single data anomaly, but rather integrates multi-dimensional data collected from two separate datasets with adaptability thresholds. By calculating the probability of pile breakage risk, a quantitative judgment is achieved. This ensures the scientific validity of the judgment and generates alarm information immediately when the risk reaches the alarm threshold, allowing construction personnel to be aware of the anomaly immediately. This prevents the fault in the broken pile area from escalating, laying the foundation for timely remedial measures, reducing rework costs, and ensuring project quality. It significantly improves the quality control level and construction efficiency of CFG pile construction. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic flowchart of a broken pile detection method provided in an embodiment of this application;

[0025] Figure 2 This is a structural block diagram of a broken pile detection device provided in one embodiment of this application;

[0026] Figure 3 This is a schematic block diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0027] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0028] It is understood that in the embodiments of this application, data such as user information are involved. When the embodiments of this application are applied to specific products or technologies, user permission or consent is required, and the collection, use and processing of related data must comply with relevant laws, regulations and standards.

[0029] It should be noted that the terms "first," "second," etc., used in the specification, claims, and drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0030] Please refer to Figure 1 , Figure 1 This is a flowchart illustrating a broken pile detection method provided in an embodiment of this application. The method can be executed by an electronic device, and specifically, the method may include S101 to S105.

[0031] S101: Based on the first acquisition frequency, synchronously acquire the first bearing current data, the first grouting pressure data, and the first drill pipe vibration data for the first time period; calculate the bearing current decrease based on the first bearing current data, calculate the grouting pressure decrease based on the first grouting pressure data, and calculate the drill pipe vibration frequency increase based on the first drill pipe vibration data.

[0032] In this embodiment, the first acquisition frequency refers to the data acquisition frequency during the conventional construction phase of CFG piles, a fixed frequency standard set to meet the efficiency requirements of foundation monitoring. The first bearing current data is the force current data collected by the current transformer during drill pipe drilling at this frequency, used to characterize the interaction strength between the drill pipe and the soil. The bearing current decrease amplitude refers to the ratio of the difference in the first bearing current data at different times to the initial data, used to reflect sudden current changes. The first grouting pressure data is the pressure data collected by the grouting pressure sensor at the grouting pipe outlet at this frequency, characterizing the grout delivery pressure state. The grouting pressure decrease amplitude refers to the ratio of the difference in the first grouting pressure data at different times to the initial data, reflecting the trend of grouting pressure changes. The first drill pipe vibration data is the drill pipe vibration-related data collected by the drill pipe vibration sensor at the first acquisition frequency, including parameters such as vibration frequency and vibration amplitude. The drill pipe vibration frequency increase refers to the difference between the real-time vibration frequency and the reference frequency, used to reflect abnormal vibration changes.

[0033] Given the highly concealed nature of pile breakage, this implementation method integrates multi-dimensional data for judgment. Bearing current, grouting pressure, and drill rod vibration are directly related to pile stress, grout delivery, and mechanical operation status, respectively; all three exhibit characteristic changes when pile breakage occurs. This implementation method simultaneously collects these three types of data to achieve multi-dimensional monitoring, avoiding misjudgment based on a single parameter. This method calculates the degree of anomaly in the changes of each parameter, making it easier to identify precursors to pile breakage compared to raw data. This provides a core basis for subsequent over-limit warnings and risk probability calculations, thus addressing the pain point of traditional monitoring methods' inability to identify pile breakage risks in real time, and buying time for on-site remediation.

[0034] For example, before implementing this embodiment, the sensor deployment and system docking can be completed on the CFG pile construction equipment. The grouting pressure sensor is installed at the grouting pipe outlet of the pump truck, the drill rod vibration sensor is fixed in the middle of the drill rod of the pile driver, and the current transformer adopts the existing configuration of the TCF900 system. The three types of sensors are connected to the TCF900 main control box through data transmission cables to ensure that the new equipment is compatible with the original system.

[0035] In this embodiment, a first acquisition frequency can be set. Considering the normal construction progress and data processing efficiency, this frequency is set to acquire data once per second, meeting the balance requirements of real-time monitoring and high efficiency. Thirdly, after construction begins, the system synchronously acquires three types of data at the first acquisition frequency. Using the time signal of the BeiDou RTK positioning system as a reference, the acquired first bearing current data, first grouting pressure data, and first drill rod vibration data are time-calibrated to eliminate time differences caused by data transmission delays, ensuring that the three types of continuously acquired data are completely consistent in the time dimension.

[0036] The system continuously analyzes the calibrated first bearing current data, selecting current data from adjacent acquisition cycles, calculating the difference between the data from the next cycle and the data from the previous cycle, and then performing a ratio calculation to obtain the bearing current decrease. Using the same time cycle comparison method, the first grouting pressure data is processed, calculating the ratio of the difference between different cycle data to the data from the previous cycle to obtain the grouting pressure decrease. The vibration frequency parameter is extracted from the first drill pipe vibration data. Using the vibration frequency during the stable drilling stage in the early stage of construction as the benchmark value, the difference between the real-time acquired vibration frequency and the benchmark value is calculated to obtain the drill pipe vibration frequency increase. This completes the quantitative calculation of the changes in the three core parameters, providing data support for subsequent over-limit judgments.

[0037] S102: If the decrease in bearing current, the decrease in grouting pressure, and the increase in drill pipe vibration frequency meet the over-limit warning conditions, then the current drill pipe drilling depth is obtained, and the second bearing current data, the second grouting pressure data, and the second drill pipe vibration data for the second time period are obtained synchronously based on the second acquisition frequency; the second acquisition frequency is greater than the first acquisition frequency; the first time period is before the second time period.

[0038] In this embodiment, the over-limit warning condition refers to the judgment condition that at least one of the following—the decrease in bearing current, the decrease in grouting pressure, and the increase in drill rod vibration frequency—reaches a preset critical value, which is used to trigger subsequent enhanced monitoring procedures. The second acquisition frequency refers to a data analysis rate higher than the first acquisition frequency, used to increase data acquisition density when an anomaly is suspected. The second bearing current data, second grouting pressure data, and second drill rod vibration data refer to the corresponding three types of construction parameter data acquired synchronously at the second acquisition frequency, used to supplement information during abnormal periods. The current drill rod drilling depth refers to the actual depth of the drill rod into the foundation when the over-limit warning is triggered, used to match geological conditions.

[0039] The core objective of this embodiment is to balance construction monitoring efficiency with anomaly identification accuracy. Routine monitoring uses the first acquisition frequency to avoid redundant data and energy consumption associated with high-frequency acquisition. When the three core parameters show anomalies that meet the over-limit warning conditions, it indicates a potential risk of pile breakage. At this point, switching to a higher second acquisition frequency allows for the acquisition of more dense and complete parameter change data, providing sufficient basis for subsequent pile breakage risk probability calculations. Simultaneously, the current drill rod drilling depth is acquired, and the judgment criteria can be adjusted based on corresponding soil characteristics to avoid misjudgments caused by uniform thresholds. This ensures accurate capture of anomaly information in suspected pile breakage scenarios while also considering monitoring economy and real-time performance.

[0040] For example, during CFG pile construction, the current transformer, grouting pressure sensor, and drill rod vibration sensor synchronously collect data for a first time period (e.g., 5 seconds) at a first acquisition frequency (e.g., 10Hz), continuously transmitting the data to the TCF900 main control box. The data is calibrated using the BeiDou RTK positioning system time signal to ensure continuity and consistency. This embodiment can calculate in real time the decrease in bearing current, the decrease in grouting pressure, and the increase in drill rod vibration frequency. An early warning is triggered when any of the preset over-limit conditions are detected, such as a sudden drop in grouting pressure ≥50% lasting >3 seconds, or an increase in drill rod vibration frequency exceeding twice the normal value and a decrease in bearing current ≥30%. This embodiment can use the TCF900's BeiDou RTK positioning technology and depth detection module to instantly obtain the current drill rod drilling depth and automatically switch the acquisition frequency of the three types of sensors to a second acquisition frequency (e.g., 50Hz).

[0041] Starting from the current moment, the sensor continuously and synchronously collects the second bearing current data, second grouting pressure data, and second drill rod vibration data within the first time period (e.g., 10 seconds) at the second acquisition frequency. The data is transmitted to the main control box in real time via a transmission cable and is still calibrated using the BeiDou RTK time signal to ensure consistency with the time dimension of the data from the first time period. This embodiment can integrate and store data from both stages, providing complete data support for subsequently determining the target parameter early warning threshold set and calculating the probability of pile breakage based on soil characteristics.

[0042] S103: Determine the set of target parameter warning thresholds based on the soil characteristic data corresponding to the current drill pipe drilling depth.

[0043] In this embodiment, the soil characteristic data includes void ratio and bearing capacity characteristic value;

[0044] Based on the soil characteristic data corresponding to the current drill pipe drilling depth, a set of target parameter early warning thresholds is determined, including:

[0045] The degree of soil looseness is determined based on the void ratio and bearing capacity characteristic value;

[0046] The initial warning threshold set is updated based on the soil looseness level to obtain the target parameter warning threshold set.

[0047] In this embodiment, the soil looseness level includes a first looseness level, a second looseness level, and a third looseness level; the looseness level corresponding to the first looseness level is higher than that of the second looseness level, and the looseness level corresponding to the second looseness level is higher than that of the third looseness level.

[0048] The initial warning threshold set includes the initial current fluctuation threshold, the initial pressure fluctuation threshold, the initial time threshold, the initial vibration frequency fluctuation threshold, and the initial amplitude peak threshold;

[0049] The initial warning threshold set is updated based on the soil looseness level to obtain the target parameter warning threshold set, including:

[0050] If the soil looseness level is the first looseness level, then the current fluctuation threshold is used as the target current fluctuation threshold; the initial pressure fluctuation threshold is lowered based on the first adjustment ratio to obtain the target pressure fluctuation threshold; the initial time threshold is shortened based on the second adjustment ratio to obtain the target time threshold; the initial vibration frequency fluctuation threshold is lowered based on the third adjustment ratio to obtain the target vibration frequency fluctuation threshold; the amplitude peak threshold is lowered based on the fourth adjustment ratio to obtain the target amplitude peak threshold; the target current fluctuation threshold, target pressure fluctuation threshold, target time threshold, target vibration frequency fluctuation threshold, and target amplitude peak threshold are used as the target parameter warning threshold set.

[0051] If the soil looseness level is level two, then the current fluctuation threshold is used as the target current fluctuation threshold; the initial pressure fluctuation threshold is lowered based on the fifth adjustment ratio to obtain the target pressure fluctuation threshold; the initial time threshold is shortened based on the sixth adjustment ratio to obtain the target time threshold; the initial vibration frequency fluctuation threshold is lowered based on the seventh adjustment ratio to obtain the target vibration frequency fluctuation threshold; the amplitude peak threshold is lowered based on the eighth adjustment ratio to obtain the target amplitude peak threshold; the target current fluctuation threshold, target pressure fluctuation threshold, target time threshold, target vibration frequency fluctuation threshold, and target amplitude peak threshold are used as the target parameter warning threshold set.

[0052] The first adjustment ratio is greater than the fifth adjustment ratio, the second adjustment ratio is greater than the sixth adjustment ratio, the third adjustment ratio is greater than the seventh adjustment ratio, and the fourth adjustment ratio is greater than the eighth adjustment ratio.

[0053] If the soil looseness level is the third looseness level, then the initial warning threshold set will be used as the target parameter warning threshold set.

[0054] In this embodiment, the void ratio refers to the ratio of pore volume to solid particle volume in the soil, and is a core indicator characterizing the compactness of the soil. The bearing capacity characteristic value refers to the load limit that the foundation soil can withstand per unit area under the premise of stability, reflecting the soil's bearing capacity. The soil looseness level is a classification of soil looseness based on the void ratio and bearing capacity characteristic value. The initial warning threshold set is a preset set of benchmark thresholds for determining pile breakage, including initial current fluctuation threshold, initial pressure fluctuation threshold, initial time threshold, initial vibration frequency fluctuation threshold, and initial amplitude peak threshold. The target parameter warning threshold set is a set of thresholds used for actual pile breakage determination after adjustment by the soil looseness level, including corresponding target thresholds. The first to eighth adjustment ratios are coefficients used to adjust the initial thresholds according to the soil quality level; within the same type of adjustment ratio, the adjustment ratio corresponding to the high looseness level is greater than the adjustment ratio corresponding to the low looseness level.

[0055] For example, this embodiment considers the direct correlation between soil looseness and abnormal construction parameters and pile breakage. In highly loose soil layers (such as the first loose grade), grout is easily lost and vibration signals are easily amplified, resulting in more significant parameter changes when a pile breaks. Therefore, a larger adjustment to the initial threshold (lowering pressure and vibration thresholds and shortening the time threshold) is needed to improve detection sensitivity and avoid missed detections. For medium loose soil layers (the second loose grade), moderate adjustments are needed to balance sensitivity and accuracy. In dense soil layers (the third loose grade), parameter changes are stable, and accurate detection can be achieved without adjusting the initial threshold. By adjusting the threshold according to soil grade differences, the judgment standard is adapted to actual geological conditions, solving the problem of misjudgments and missed detections caused by a uniform threshold, and ensuring the accuracy of pile breakage detection.

[0056] For example, before CFG pile construction, the void ratio and bearing capacity characteristic values ​​corresponding to different depths in the construction area are obtained through the geological survey report. Combined with the depth detection module of the TCF900 system, a depth-soil characteristic data mapping relationship is established, and an initial warning threshold set is preset. The initial current fluctuation threshold is set to 30%, the initial pressure fluctuation threshold is set to 50%, the initial time threshold is set to 5 seconds, the initial vibration frequency fluctuation threshold is set to 2 times, and the initial amplitude peak threshold is set to 5mm. At the same time, the first to eighth adjustment ratios are set: the first adjustment ratio is 20%, the fifth adjustment ratio is 10%, the second adjustment ratio is 30%, the sixth adjustment ratio is 15%, the third adjustment ratio is 25%, the seventh adjustment ratio is 12%, the fourth adjustment ratio is 20%, and the eighth adjustment ratio is 10%.

[0057] After triggering an over-limit warning during construction, this embodiment can use the Beidou RTK positioning technology and depth detection module of the TCF900 to obtain the current drilling depth of the drill rod. Based on a preset mapping relationship, the void ratio and bearing capacity characteristic value corresponding to that depth are extracted. This embodiment can determine the degree of soil looseness according to preset standards: if the void ratio is greater than 1.0 and the bearing capacity characteristic value is less than 100 kPa, it is determined to be the first looseness level; if the void ratio is between 0.7 and 1.0 and the bearing capacity characteristic value is between 100 and 200 kPa, it is determined to be the second looseness level; if the void ratio is less than 0.7 and the bearing capacity characteristic value is greater than 200 kPa, it is determined to be the third looseness level.

[0058] This embodiment can adjust the initial warning threshold set based on the determined soil looseness level. If it is the first looseness level, the initial current fluctuation threshold of 30% is directly used as the target current fluctuation threshold; the initial pressure fluctuation threshold is reduced by 20%, i.e., 50% × (1-20%) = 40%, as the target pressure fluctuation threshold; the initial time threshold is shortened by 30%, i.e., 5 seconds × (1-30%) = 3.5 seconds, as the target time threshold; the initial vibration frequency fluctuation threshold is reduced by 25%, i.e., 2 times × (1-25%) = 1.5 times, as the target vibration frequency fluctuation threshold; the initial amplitude peak threshold is reduced by 20%, i.e., 5mm × (1-20%) = 4mm, as the target amplitude peak threshold, and integrated to form the target parameter warning threshold set.

[0059] For the second loosening level, the initial current fluctuation threshold of 30% is used as the target value; the initial pressure fluctuation threshold is reduced by 10% to 45%, the initial time threshold is shortened by 15% to 4.25 seconds, the initial vibration frequency fluctuation threshold is reduced by 12% to 1.76 times, and the initial amplitude peak threshold is reduced by 10% to 4.5 mm, which are then integrated into the target parameter warning threshold set. For the third loosening level, the initial warning threshold set is directly used as the target parameter warning threshold set without adjustment. In this embodiment, the adjusted target parameter warning threshold set can be transmitted to the TCF900 main control box for subsequent calculation of the pile breakage risk probability using multi-dimensional data collected before and after fusion, ensuring that the judgment criteria accurately match the current geological conditions.

[0060] This embodiment differentiates the early warning threshold according to the degree of soil looseness, ensuring that the target parameter early warning threshold set is suitable for different geological conditions. This effectively solves the problems of missed detection of highly loose soil layers and misjudgment of dense soil layers caused by a uniform threshold in existing technologies, significantly improving the accuracy of pile breakage detection. Furthermore, the adjustment logic is clear and the operation is simple, directly relying on existing construction systems and geological data without the need for additional complex equipment, thus balancing practicality and economy. The accurate target threshold provides a reliable basis for subsequent pile breakage risk probability calculation, laying the foundation for real-time early warning of pile breakage, and helping to reduce rework costs and ensure construction quality.

[0061] S104: Determine the probability of pile breakage risk based on the first bearing current data, the second bearing current data, the first grouting pressure data, the second grouting pressure data, the first drill rod vibration data, the second drill rod vibration data, and the target parameter early warning threshold set.

[0062] In this embodiment, the probability of pile breakage risk is determined based on the first bearing current data, the second bearing current data, the first grouting pressure data, the second grouting pressure data, the first drill pipe vibration data, the second drill pipe vibration data, and the target parameter early warning threshold set, including:

[0063] The first and second bearing current data are weighted and spliced ​​together to obtain the target bearing current data.

[0064] The first grouting pressure data and the second grouting pressure data are weighted and spliced ​​together to obtain the target grouting pressure data;

[0065] The vibration data of the first drill pipe and the vibration data of the second drill pipe are weighted and stitched together to obtain the vibration data of the target drill pipe.

[0066] The bearing current fluctuation amplitude is calculated based on the target bearing current data; the grouting pressure fluctuation amplitude and pressure zeroing time are calculated based on the target grouting pressure data; and the drill pipe vibration frequency fluctuation coefficient and peak amplitude are obtained based on the target drill pipe vibration data.

[0067] The probability of pile breakage risk is calculated based on the set of bearing current fluctuation amplitude, grouting pressure fluctuation amplitude, pressure zeroing time, drill pipe vibration frequency fluctuation coefficient, amplitude peak value, and target parameter warning threshold.

[0068] In this embodiment, the target parameter warning threshold set includes the target current fluctuation threshold, the target pressure fluctuation threshold, the target time threshold, the target vibration frequency fluctuation threshold, and the target amplitude peak threshold;

[0069] The probability of pile breakage risk is calculated based on the set of factors including the amplitude of bearing current fluctuation, grouting pressure fluctuation, pressure zeroing time, drill pipe vibration frequency fluctuation coefficient, peak amplitude, and target parameter warning thresholds.

[0070] Based on the bearing current fluctuation amplitude, grouting pressure fluctuation amplitude, pressure zeroing time duration, drill rod vibration frequency fluctuation coefficient, amplitude peak value, target current fluctuation threshold, target pressure fluctuation threshold, target time threshold, target vibration frequency fluctuation threshold, and target amplitude peak value, the pile breakage risk probability is calculated through the pile breakage risk probability function.

[0071] The probability function for the risk of pile breakage is:

[0072]

[0073]

[0074] Where P represents the probability of pile failure. Let be the weight coefficient of the i-th parameter. For the i-th parameter, This represents the amplitude of the holding current fluctuation. This refers to the fluctuation range of grouting pressure. For the duration of zero pressure, This is the frequency fluctuation coefficient of the drill pipe vibration. The peak amplitude, Let i be the target warning threshold corresponding to the i-th parameter. The target current fluctuation threshold, The target pressure fluctuation threshold, The target time threshold, The target vibration frequency fluctuation threshold, The target amplitude peak threshold, Let be the sensitivity adjustment index corresponding to the i-th parameter, and n be the number of parameters that exceed the corresponding target warning threshold. For the quantity exceeding the limit, a, b, c, d, and e are all preset correction values.

[0075] In this embodiment, weighted splicing refers to the method of fusing similar data from different acquisition stages according to preset weights. Weight allocation can highlight the importance of high-frequency acquired data. The target bearing current data, target grouting pressure data, and target drill rod vibration data are integrated current, pressure, and vibration data obtained after weighted splicing, used to comprehensively reflect changes in construction parameters. The bearing current fluctuation amplitude refers to the relative change ratio of current in the target bearing current data, and the pressure zeroing duration refers to the continuous duration of zero pressure in the target grouting pressure data. The drill rod vibration frequency fluctuation coefficient refers to the ratio of the actual vibration frequency to the reference frequency in the target drill rod vibration data. The pile breakage risk probability function is a probability calculation model that integrates multiple parameters, weights, sensitivity, and corrections for the number of parameters exceeding the standard. The weight coefficient reflects the priority of each parameter's contribution to the pile breakage judgment, and the sensitivity adjustment index controls the rate of influence of parameters exceeding the standard on the probability. The correction term for the number of parameters exceeding the standard is a preset coefficient that adjusts the probability according to the number of parameters exceeding the standard.

[0076] In this embodiment, the first acquisition frequency data is used for routine monitoring, while the second acquisition frequency data more accurately reflects abnormal states. Weighted splicing integrates the advantages of both-stage data, avoiding the limitations of single-stage data. Extracting multi-dimensional feature parameters comprehensively covers the parameter change patterns during pile breakage, compensating for the one-sidedness of single features. Through the pile breakage risk probability function, combined with weighting coefficients to highlight the role of core parameters, a sensitivity adjustment index to adapt to the progressive characteristics of parameter anomalies, and an excess quantity correction term to balance the differences between single-parameter fluctuations and multi-parameter verification, risk quantification calculation is achieved, shifting pile breakage judgment from qualitative to quantitative, improving the scientific rigor and reliability of the results, and solving the misjudgment problem of traditional subjective judgment.

[0077] For example, before construction, this embodiment can preset weighted splicing weights in the TCF900 main control box, where the weight of the first bearing current data is set to 0.3, the weight of the second bearing current data is set to 0.7; the weight of the first grouting pressure data is set to 0.3, the weight of the second grouting pressure data is set to 0.7; the weight of the first drill rod vibration data is set to 0.3, and the weight of the second drill rod vibration data is set to 0.7, ensuring the dominant role of high-frequency data acquisition. Simultaneously, preset parameters for the pile breakage risk probability function are: weight coefficients are, in order, bearing current fluctuation amplitude 0.1, grouting pressure fluctuation amplitude 0.3, pressure zeroing duration 0.2, drill rod vibration frequency fluctuation coefficient 0.25, and peak amplitude 0.15; in the sensitivity adjustment index, the core parameters grouting pressure fluctuation amplitude and drill rod vibration frequency fluctuation coefficient are set to 1.5, and the rest are set to 1.2; the excess quantity correction items a are set to -0.2, b to -0.1, c to 0, d to 0.05, and e to 0.1.

[0078] After triggering the over-limit warning, this embodiment can retrieve the stored first bearing current data, first grouting pressure data, first drill pipe vibration data, and corresponding data from the second acquisition stage from the TCF900 main control box. Using the timestamp calibrated by the BeiDou RTK positioning system as a reference, the data is weighted and stitched according to preset weights. For example, the average value of the first bearing current data and the average value of the second bearing current data are multiplied by their respective weights and then summed to obtain the target bearing current data. Similarly, the stitching calculation of the target grouting pressure data and the target drill pipe vibration data is completed to ensure the rationality of data integration.

[0079] This embodiment can extract core feature parameters based on the spliced ​​target data. Specifically, this embodiment can calculate the percentage difference between the maximum and minimum current values ​​in the target bearing current data to obtain the bearing current fluctuation amplitude; this embodiment can statistically analyze the continuous duration of zero pressure values ​​in the target grouting pressure data to obtain the pressure zeroing duration; this embodiment can also calculate the percentage of the maximum decrease in grouting pressure to obtain the grouting pressure fluctuation amplitude; this embodiment can compare the actual vibration frequency in the target drill rod vibration data with the preset reference vibration frequency before construction to obtain the drill rod vibration frequency fluctuation coefficient, and simultaneously extract the maximum amplitude value in the vibration data as the amplitude peak value.

[0080] This embodiment can retrieve a set of predetermined target parameter warning thresholds, including target current fluctuation threshold, target pressure fluctuation threshold, target time threshold, target vibration frequency fluctuation threshold, and target amplitude peak threshold. It compares the magnitude relationship between the extracted five feature parameters and the corresponding target thresholds one by one, counts the number of parameters whose actual values ​​are greater than the target thresholds, and determines the number of parameters n that exceed the standard.

[0081] This embodiment allows the calculation of pile breakage risk probability by substituting five characteristic parameters, corresponding target thresholds, preset weighting coefficients, sensitivity adjustment indexes, and correction terms for the number of exceedances determined by n. For example, if n=3, the corresponding correction term is 0.05. The contribution value of each parameter is calculated sequentially, and then the final pile breakage risk probability is obtained through function integration. During the calculation process, the system automatically performs data format verification and unit unification to ensure the accuracy of the calculation results. This embodiment can store the calculated pile breakage risk probability in the TCF900 main control box and display it synchronously on the terminal interface, providing data support for whether to generate pile breakage alarm information later. The entire process is completed within 10 seconds, meeting the needs of real-time monitoring.

[0082] This embodiment integrates data collected in two stages through weighted splicing, ensuring the completeness and representativeness of parameter information and avoiding the one-sidedness of data from a single stage. Multi-dimensional feature parameters comprehensively cover typical signals of pile breakage. Combined with scientific probability functions, incorporating weights, sensitivity, and corrections for the number of exceedances, it achieves quantitative calculation of pile breakage risk, significantly improving the accuracy and objectivity of the judgment. It effectively filters out interference from occasional fluctuations in single parameters, strengthens the risk identification capability when multiple parameters exceed limits, and solves the subjectivity and misjudgment problems of traditional qualitative judgment. It provides reliable quantitative evidence for real-time early warning of pile breakage, helping construction personnel to take timely measures, reduce rework costs, and ensure the quality and efficiency of CFG pile construction.

[0083] S105: If the probability of pile breakage reaches the preset pile breakage alarm probability threshold, a pile breakage alarm message will be generated.

[0084] In this embodiment, the preset pile breakage alarm probability threshold refers to the probability standard for triggering a pile breakage alarm set in advance before construction, used to clarify the alarm triggering boundary. The pile breakage alarm information refers to the warning signal generated by the system after determining that the pile breakage risk has reached the standard, containing key information such as the location, depth, and risk probability of the pile breakage, used to notify construction personnel to take timely action.

[0085] This embodiment clarifies the alarm triggering conditions by setting a preset threshold, avoiding false alarms or missed alarms caused by ambiguity in risk probability. When the probability of pile breakage reaches the threshold, it indicates that the possibility of pile breakage has reached the level requiring intervention. An alarm message is generated and can be synchronized with construction personnel immediately, buying time for immediate suspension of work and initiation of the handling process, thus solving the drawbacks of traditional pile breakage detection after the fact.

[0086] For example, before construction, this embodiment can preset a pile breakage alarm probability threshold in the TCF900 main control box. Combining engineering quality requirements and historical construction data, the threshold is set to 0.8. After completing the pile breakage risk probability calculation, this embodiment can automatically compare the calculation result with the preset threshold. The comparison process relies on the built-in algorithm of the TCF900 main control box to quickly complete the comparison, ensuring real-time response. If the calculated pile breakage risk probability is ≥0.8, the system immediately integrates the pile breakage location from Beidou RTK positioning, the pile breakage depth obtained from the depth detection module, and the risk probability data to generate a pile breakage alarm. The alarm information is simultaneously output through a pop-up window on the TCF900 terminal display and an audible and visual alarm. At the same time, the pile driver actuator is linked to suspend drilling and grouting operations to ensure that construction personnel are promptly informed and can initiate subsequent handling procedures.

[0087] As can be seen from the above, this embodiment can achieve real-time monitoring and accurate identification of pile breakage. This embodiment simultaneously collects three types of data directly related to pile breakage: bearing current, grouting pressure, and drill rod vibration. Initially, routine monitoring is performed at a conventional first acquisition frequency. Once abnormal data is detected that meets the warning conditions, the system switches to a higher second acquisition frequency to supplement data collection. This ensures the efficiency of daily construction monitoring while also obtaining more complete and accurate core data when pile breakage is suspected, providing solid support for subsequent judgment and avoiding missed or incorrect diagnoses.

[0088] The detection method in this embodiment is adaptable to different construction environments, improving the reliability of pile breakage detection. This embodiment determines the target parameter warning threshold by combining soil characteristic data corresponding to the current drill rod drilling depth. Considering the differences in the impact of different soil layers on construction parameters, the judgment standard aligns with actual construction scenarios, avoiding misjudgments caused by uniform standards and ensuring accurate identification of pile breakage risks under different geological conditions.

[0089] This embodiment scientifically quantifies the risk of pile breakage, buying time for subsequent handling. Instead of simply judging pile breakage based on a single data anomaly, this embodiment integrates multi-dimensional data collected from two separate datasets with adaptability thresholds. By calculating the probability of pile breakage risk, it achieves a quantitative judgment. This ensures the scientific validity of the judgment and generates an alarm message immediately when the risk reaches the alarm threshold, allowing construction personnel to be aware of the anomaly immediately. This prevents the fault in the broken pile area from escalating, laying the foundation for timely remedial measures, reducing rework costs, and ensuring project quality. It significantly improves the quality control level and construction efficiency of CFG pile construction.

[0090] In one embodiment of this application, after generating the broken pile alarm information, the method further includes:

[0091] Based on the pile breakage alarm information, a shutdown control command is generated. The shutdown control command is used to control the pile driver actuator to stop drilling and grouting operations.

[0092] After the piling machine actuator stops drilling and grouting operations, if the current drilling depth of the drill rod is less than the preset depth threshold, the first operation is executed.

[0093] The first operation includes:

[0094] Determine the depth of the broken pile and obtain the design radius data of the pile body;

[0095] The backfill height is calculated based on the broken pile depth, and the amount of backfill concrete is calculated based on the backfill height and the pile design radius data.

[0096] Backfill control instructions are generated based on the amount of backfill concrete used. These instructions are used to instruct the concrete conveying equipment to pour concrete into the broken pile area according to the amount of backfill concrete used, so that the pouring height reaches the backfill height.

[0097] In response to receiving the grouting completion signal, a vibration control command is generated. Based on the vibration control command, the vibration equipment is controlled to vibrate the backfilled concrete at a preset vibration frequency until the density parameter of the backfilled concrete reaches the preset density threshold, at which point the vibration operation stops.

[0098] In this embodiment, after the piling machine actuator stops drilling and grouting operations, the following steps are also included:

[0099] If the current drill pipe drilling depth is not less than the preset depth threshold, then perform the second operation;

[0100] The second operation includes:

[0101] Determine the depth of the broken pile, the pile design parameters, and the estimated data for the crack volume in the broken pile area;

[0102] The high-pressure pre-grouting parameters are calculated based on the pile fracture depth, pile design parameters, and crack volume estimation data. The high-pressure pre-grouting parameters include pre-grouting pressure, water-cement ratio, and grouting volume.

[0103] High-pressure grouting control commands are generated based on high-pressure pre-grouting parameters. These commands instruct the high-pressure grouting equipment to inject cement grout into the fractured area of ​​the broken pile.

[0104] The timing starts when the grouting completion signal is received. After a preset static time, a re-driving pile control command is generated. Based on the re-driving pile control command, the pile driver actuator is controlled to perform re-driving pile operation according to the re-driving pile construction parameters. The re-driving pile construction parameters include the drilling speed and the grouting volume.

[0105] In this embodiment, the shutdown control command refers to the operation command generated based on the broken pile alarm information to control the pile driver actuator to stop drilling and grouting, thus preventing the fault from escalating. The preset depth threshold refers to the depth standard for distinguishing between shallow and deep broken piles, with a reference technical specification of 3 meters. The pile design radius data refers to the CFG pile cross-sectional radius parameter specified in the engineering design documents. The backfill height refers to the grouting height required to fill the broken pile section, typically a preset distance above the top of the broken pile. The backfill concrete volume refers to the required concrete volume calculated based on the backfill height and the pile design radius. The grouting completion signal refers to the feedback signal sent by the concrete conveying equipment after completing the preset volume of grouting. The preset vibration frequency refers to the fixed vibration rate of the vibrating equipment during operation, and the preset compaction threshold refers to the compaction standard for determining whether the concrete vibration is qualified. The pile design parameters include design indicators such as pile diameter and length, and the estimated crack volume data for the broken pile area refers to the crack space volume calculated based on the broken pile depth and design parameters. High-pressure pre-grouting parameters are grouting parameters adapted for deep broken piles. Pre-grouting pressure refers to the pressure value of high-pressure grouting, water-cement ratio refers to the ratio of cement to water in the cement grout, and grouting volume refers to the volume of cement grout required to fill the cracks. Preset settling time refers to the waiting time required for the cement grout to initially set, and re-pile construction parameters refer to the operation parameters for re-piling.

[0106] This implementation takes into account the significant differences in geological conditions and construction difficulties between shallow and deep broken piles. Shallow broken piles are located in loose soil layers with weak constraint, allowing for convenient construction intervention. A rapid backfilling and vibratory compaction method can quickly fill the voids, preventing grout loss and balancing efficiency and repair effectiveness. Deep broken piles are located in dense soil layers with high lateral pressure, making cracks easier to close. High-pressure pre-grouting is required to split the soil, fill cracks, and form rigid support before re-driving the pile to ensure its integrity. The layered design can adapt to the repair needs of broken piles at different depths, avoiding the limitations of a single treatment method. Simultaneously, by accurately calculating material usage and construction parameters, targeted control instructions are generated to achieve automated processing, reduce human error, ensure repair quality, and solve the problems of low efficiency and poor effectiveness of traditional remedial methods.

[0107] For example, in this embodiment, after generating a broken pile alarm, a shutdown control command is immediately generated based on the information and sent to the pile driver actuator via a data transmission cable to control it to stop drilling and grouting operations, thus preventing the gap in the broken pile area from widening or grout waste. This embodiment can retrieve the current drill rod drilling depth data and compare it with a preset depth threshold of 3 meters.

[0108] If the current drilling depth is 2.5 meters (less than 3 meters), the first operation is performed: In this embodiment, the depth of the broken pile can be determined to be 2.3 meters using the depth detection module of the TCF900, and the pile design radius data of 0.4 meters can be retrieved from the engineering design database. This embodiment can calculate the backfill height based on the broken pile depth, setting it to 50 centimeters above the top of the broken pile, i.e., the backfill height is 2.3 meters + 0.5 meters = 2.8 meters. The amount of backfill concrete is calculated using the cylinder volume formula, and a specific value is obtained by combining the pile design radius and the backfill height. This embodiment can generate a backfill control command based on this amount and send it to the concrete conveying equipment, instructing it to pour the appropriate amount of concrete into the broken pile area until the pouring height reaches 2.8 meters. After the concrete conveying equipment completes the pouring, it sends a pouring completion signal. In this embodiment, the equipment can respond to the signal to generate a vibration control command, which controls the vibration equipment to vibrate the backfill concrete at a preset vibration frequency of 50 Hz. At the same time, the density parameter is monitored in real time by a density sensor. When the parameter reaches the preset density threshold of 0.95, a stop command is generated to control the vibration equipment to stop operating.

[0109] If the current drill pipe drilling depth is 4 meters or less than 3 meters, the second operation is performed: In this embodiment, the depth of the broken pile can be determined to be 3.8 meters through the depth detection module. The pile design parameters, including a pile diameter of 0.8 meters and a design length of 15 meters, are retrieved. Combined with the broken pile depth and pile cross-sectional dimensions, the estimated volume of the crack in the broken pile area is calculated. Based on the above data, the high-pressure pre-grouting parameters can be calculated, setting the pre-grouting pressure to 1.2 times the design value, the water-cement ratio to 1:1, and the grouting volume to 1.2 times the crack volume. This embodiment can generate a high-pressure grouting control command and send it to the high-pressure grouting equipment, instructing it to inject cement grout into the crack area of ​​the broken pile through the original drill pipe channel. After the high-pressure grouting equipment sends a signal indicating completion of grouting, this embodiment starts timing. The preset static time is set to 4 hours. After the timing ends, a re-driving pile control command is generated. The re-driving pile construction parameters are set as follows: drilling speed = original design value × 0.9, grouting volume = calculated value × 1.1. The pile driver actuator is instructed to perform re-driving pile operation according to these parameters until the entire pile construction is completed.

[0110] This embodiment employs a layered treatment strategy to precisely adapt to the repair needs of broken piles at different depths, significantly improving the effectiveness and efficiency of broken pile remediation. For shallow broken piles, a rapid backfill reinforcement + vibration compaction process is used, combined with precisely calculated backfill concrete usage and density control, to quickly fill voids and ensure the backfill material is dense, achieving efficient rework. For deep broken piles, high-pressure pre-grouting fills the cracks, forming rigid support, followed by optimized re-driving parameters to effectively resist lateral pressure from deep soil and ensure pile integrity. The entire process relies on automated control commands for coordinated operation, reducing human error, timely shutdown to prevent further damage, and precise calculation of material usage and construction parameters to minimize waste, significantly reducing rework costs and downtime. This approach balances repair quality and economy, comprehensively improving the quality control level and project reliability of CFG pile construction.

[0111] Corresponding to the broken pile detection method in the above embodiment, Figure 2 This is a structural block diagram of a broken pile detection device provided according to an embodiment of this application. For ease of explanation, only the parts relevant to the embodiment of this application are shown. References Figure 2 The broken pile detection device 20 includes: a low-frequency data analysis module 21, a high-frequency data acquisition module 22, a dynamic threshold determination module 23, a broken pile risk analysis module 24, and a broken pile alarm module 25.

[0112] Among them, the low-frequency data analysis module 21 is used to synchronously acquire the first bearing current data, the first grouting pressure data and the first drill rod vibration data for the first time period based on the first acquisition frequency; calculate the bearing current decrease based on the first bearing current data, calculate the grouting pressure decrease based on the first grouting pressure data, and calculate the drill rod vibration frequency increase based on the first drill rod vibration data.

[0113] The high-frequency data acquisition module 22 is used to acquire the current drilling depth of the drill pipe and simultaneously acquire the second bearing current data, the second grouting pressure data, and the second drill pipe vibration data for the second time period based on the second acquisition frequency if the decrease in bearing current, the decrease in grouting pressure, and the increase in drill pipe vibration frequency meet the over-limit warning conditions; the second acquisition frequency is greater than the first acquisition frequency.

[0114] The dynamic threshold determination module 23 is used to determine the target parameter early warning threshold set based on the soil characteristic data corresponding to the current drill pipe drilling depth;

[0115] The pile breakage risk analysis module 24 is used to determine the probability of pile breakage risk based on the first bearing current data, the second bearing current data, the first grouting pressure data, the second grouting pressure data, the first drill rod vibration data, the second drill rod vibration data, and the target parameter early warning threshold set.

[0116] The pile breakage alarm module 25 is used to generate pile breakage alarm information if the probability of pile breakage risk reaches the preset pile breakage alarm probability threshold.

[0117] In one embodiment of this application, the broken pile detection device 20 further includes: a shallow broken pile treatment module, used for:

[0118] Based on the pile breakage alarm information, a shutdown control command is generated. The shutdown control command is used to control the pile driver actuator to stop drilling and grouting operations.

[0119] After the piling machine actuator stops drilling and grouting operations, if the current drilling depth of the drill rod is less than the preset depth threshold, the first operation is executed.

[0120] The first operation includes:

[0121] Determine the depth of the broken pile and obtain the design radius data of the pile body;

[0122] The backfill height is calculated based on the broken pile depth, and the amount of backfill concrete is calculated based on the backfill height and the pile design radius data.

[0123] Backfill control instructions are generated based on the amount of backfill concrete used. These instructions are used to instruct the concrete conveying equipment to pour concrete into the broken pile area according to the amount of backfill concrete used, so that the pouring height reaches the backfill height.

[0124] In response to receiving the grouting completion signal, a vibration control command is generated. Based on the vibration control command, the vibration equipment is controlled to vibrate the backfilled concrete at a preset vibration frequency until the density parameter of the backfilled concrete reaches the preset density threshold, at which point the vibration operation stops.

[0125] In one embodiment of this application, the broken pile detection device 20 further includes: a deep broken pile treatment module, used for:

[0126] If the current drill pipe drilling depth is not less than the preset depth threshold, then perform the second operation;

[0127] The second operation includes:

[0128] Determine the depth of the broken pile, the pile design parameters, and the estimated data for the crack volume in the broken pile area;

[0129] The high-pressure pre-grouting parameters are calculated based on the pile fracture depth, pile design parameters, and crack volume estimation data. The high-pressure pre-grouting parameters include pre-grouting pressure, water-cement ratio, and grouting volume.

[0130] High-pressure grouting control commands are generated based on high-pressure pre-grouting parameters. These commands instruct the high-pressure grouting equipment to inject cement grout into the fractured area of ​​the broken pile.

[0131] The timing starts when the grouting completion signal is received. After a preset static time, a re-driving pile control command is generated. Based on the re-driving pile control command, the pile driver actuator is controlled to perform re-driving pile operation according to the re-driving pile construction parameters. The re-driving pile construction parameters include the drilling speed and the grouting volume.

[0132] In one embodiment of this application, the soil characteristic data includes void ratio and bearing capacity characteristic value; when the dynamic threshold determination module 23 determines the target parameter warning threshold set based on the soil characteristic data corresponding to the current drill pipe drilling depth, it is specifically used to: determine the soil looseness level based on void ratio and bearing capacity characteristic value; update the initial warning threshold set based on the soil looseness level to obtain the target parameter warning threshold set.

[0133] In one embodiment of this application, the soil looseness level includes a first looseness level, a second looseness level, and a third looseness level; the looseness level corresponding to the first looseness level is higher than that of the second looseness level, and the looseness level corresponding to the second looseness level is higher than that of the third looseness level; the initial warning threshold set includes an initial current fluctuation threshold, an initial pressure fluctuation threshold, an initial time threshold, an initial vibration frequency fluctuation threshold, and an initial amplitude peak threshold; when the dynamic threshold determination module 23 updates the initial warning threshold set based on the soil looseness level to obtain the target parameter warning threshold set, it is specifically used for:

[0134] If the soil looseness level is the first looseness level, then the current fluctuation threshold is used as the target current fluctuation threshold; the initial pressure fluctuation threshold is lowered based on the first adjustment ratio to obtain the target pressure fluctuation threshold; the initial time threshold is shortened based on the second adjustment ratio to obtain the target time threshold; the initial vibration frequency fluctuation threshold is lowered based on the third adjustment ratio to obtain the target vibration frequency fluctuation threshold; the amplitude peak threshold is lowered based on the fourth adjustment ratio to obtain the target amplitude peak threshold; the target current fluctuation threshold, target pressure fluctuation threshold, target time threshold, target vibration frequency fluctuation threshold, and target amplitude peak threshold are used as the target parameter warning threshold set.

[0135] If the soil looseness level is level two, then the current fluctuation threshold is used as the target current fluctuation threshold; the initial pressure fluctuation threshold is lowered based on the fifth adjustment ratio to obtain the target pressure fluctuation threshold; the initial time threshold is shortened based on the sixth adjustment ratio to obtain the target time threshold; the initial vibration frequency fluctuation threshold is lowered based on the seventh adjustment ratio to obtain the target vibration frequency fluctuation threshold; the amplitude peak threshold is lowered based on the eighth adjustment ratio to obtain the target amplitude peak threshold; the target current fluctuation threshold, target pressure fluctuation threshold, target time threshold, target vibration frequency fluctuation threshold, and target amplitude peak threshold are used as the target parameter warning threshold set.

[0136] The first adjustment ratio is greater than the fifth adjustment ratio, the second adjustment ratio is greater than the sixth adjustment ratio, the third adjustment ratio is greater than the seventh adjustment ratio, and the fourth adjustment ratio is greater than the eighth adjustment ratio.

[0137] If the soil looseness level is the third looseness level, then the initial warning threshold set will be used as the target parameter warning threshold set.

[0138] In one embodiment of this application, the pile breakage risk analysis module 24, when determining the probability of pile breakage risk based on first bearing current data, second bearing current data, first grouting pressure data, second grouting pressure data, first drill rod vibration data, second drill rod vibration data, and a target parameter warning threshold set, is specifically used for:

[0139] The first and second bearing current data are weighted and spliced ​​together to obtain the target bearing current data.

[0140] The first grouting pressure data and the second grouting pressure data are weighted and spliced ​​together to obtain the target grouting pressure data;

[0141] The vibration data of the first drill pipe and the vibration data of the second drill pipe are weighted and stitched together to obtain the vibration data of the target drill pipe.

[0142] The bearing current fluctuation amplitude is calculated based on the target bearing current data; the grouting pressure fluctuation amplitude and pressure zeroing time are calculated based on the target grouting pressure data; and the drill pipe vibration frequency fluctuation coefficient and peak amplitude are obtained based on the target drill pipe vibration data.

[0143] The probability of pile breakage risk is calculated based on the set of bearing current fluctuation amplitude, grouting pressure fluctuation amplitude, pressure zeroing time, drill pipe vibration frequency fluctuation coefficient, amplitude peak value, and target parameter warning threshold.

[0144] In one embodiment of this application, the target parameter warning threshold set includes a target current fluctuation threshold, a target pressure fluctuation threshold, a target time threshold, a target vibration frequency fluctuation threshold, and a target amplitude peak value threshold; the pile breakage risk analysis module 24, when calculating the pile breakage risk probability based on the bearing current fluctuation amplitude, grouting pressure fluctuation amplitude, pressure zeroing duration, drill pipe vibration frequency fluctuation coefficient, amplitude peak value, and the target parameter warning threshold set, is specifically used for:

[0145] Based on the bearing current fluctuation amplitude, grouting pressure fluctuation amplitude, pressure zeroing time duration, drill rod vibration frequency fluctuation coefficient, amplitude peak value, target current fluctuation threshold, target pressure fluctuation threshold, target time threshold, target vibration frequency fluctuation threshold, and target amplitude peak value, the pile breakage risk probability is calculated through the pile breakage risk probability function.

[0146] The probability function for the risk of pile breakage is:

[0147]

[0148]

[0149] Where P represents the probability of pile failure. Let i be the weight coefficient of the i-th parameter. For the i-th parameter, This represents the amplitude of the holding current fluctuation. This refers to the fluctuation range of grouting pressure. For the duration of zero pressure, This is the frequency fluctuation coefficient of the drill pipe vibration. The peak amplitude, Let i be the target warning threshold corresponding to the i-th parameter. The target current fluctuation threshold, The target pressure fluctuation threshold, The target time threshold, The target vibration frequency fluctuation threshold, The target amplitude peak threshold, Let be the sensitivity adjustment index corresponding to the i-th parameter, and n be the number of parameters that exceed the corresponding target warning threshold. For the quantity exceeding the limit, a, b, c, d, and e are all preset correction values.

[0150] See Figure 3 , Figure 3 This is a schematic block diagram of an electronic device provided according to an embodiment of this application. Figure 3 The electronic device 300 in this embodiment may include one or more processors 301, one or more input devices 302, one or more output devices 303, and one or more memories 304. The processors 301, input devices 302, output devices 303, and memories 304 communicate with each other via a communication bus 305. The memories 304 store computer programs, including program instructions. The processors 301 execute the program instructions stored in the memories 304. Specifically, the processors 301 are configured to invoke the program instructions to perform the functions of the modules in the aforementioned device embodiments, for example... Figure 2 The functions of the low-frequency data analysis module 21, high-frequency data acquisition module 22, dynamic threshold determination module 23, pile breakage risk analysis module 24, and pile breakage alarm module 25 are shown.

[0151] It should be understood that, in the embodiments of this application, the processor 301 may be a central processing unit (CPU), but it may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0152] Input device 302 may include a touchpad, a fingerprint sensor (for collecting the user's fingerprint information and fingerprint orientation information), a microphone, etc., and output device 303 may include a display (LCD, etc.), a speaker, etc.

[0153] The memory 304 may include read-only memory and random access memory, and provides instructions and data to the processor 301. A portion of the memory 304 may also include non-volatile random access memory. For example, the memory 304 may also store broken pile alarm information.

[0154] In specific implementations, the processor 301, input device 302, and output device 303 described in the embodiments of this application can execute the implementation methods described in the embodiments of the broken pile detection method provided in this application, or they can execute the implementation methods of the electronic device 300 described in the embodiments of this application, which will not be repeated here.

[0155] In another embodiment of this application, a computer-readable storage medium is provided. This computer-readable storage medium stores a computer program, which includes program instructions. When executed by a processor, the program instructions implement all or part of the processes in the methods described above. Alternatively, the computer program can instruct related hardware to complete the process. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include any entity or device capable of carrying computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc.

[0156] The computer-readable storage medium can be an internal storage unit of the electronic device in any of the foregoing embodiments, such as a hard disk or memory of the electronic device. The computer-readable storage medium can also be an external storage device of the electronic device, such as a plug-in hard disk, smart media card (SMC), secure digital card (SD) card, flash card, etc., equipped on the electronic device. Furthermore, the computer-readable storage medium can include both internal and external storage units of the electronic device. The computer-readable storage medium is used to store computer programs and other programs and data required by the electronic device. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output.

[0157] Those skilled in the art will recognize that the modules / units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.

[0158] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the electronic devices and units described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0159] In the several embodiments provided in this application, it should be understood that the disclosed electronic devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of modules / units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules, units, or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces or modules / units, or it may be an electrical, mechanical, or other form of connection.

[0160] The modules / units described as separate components may or may not be physically separate. Similarly, the components shown as modules / units may or may not be physical modules / units; they may be located in one place or distributed across multiple network modules / units. Some or all of the modules / units can be selected to achieve the purpose of the embodiments of this application, depending on actual needs.

[0161] Furthermore, the functional modules / units in the various embodiments of this application can be integrated into one processing module / unit, or each module / unit can exist physically separately, or two or more modules / units can be integrated into one module / unit. The integrated modules / units described above can be implemented in hardware or in the form of software functional modules / units.

[0162] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for detecting broken piles, characterized in that, include: Based on the first acquisition frequency, the first bearing current data, the first grouting pressure data, and the first drill pipe vibration data are synchronously acquired for the first time period. The decrease in bearing current is calculated based on the first bearing current data, the decrease in grouting pressure is calculated based on the first grouting pressure data, and the increase in drill pipe vibration frequency is calculated based on the first drill pipe vibration data. If the decrease in bearing current, the decrease in grouting pressure, and the increase in drill pipe vibration frequency meet the over-limit warning conditions, then the current drill pipe drilling depth is obtained, and the second bearing current data, the second grouting pressure data, and the second drill pipe vibration data for the second time period are simultaneously obtained based on the second acquisition frequency; the second acquisition frequency is greater than the first acquisition frequency; the first time period is before the second time period; Determine a set of target parameter early warning thresholds based on the soil characteristic data corresponding to the current drill pipe drilling depth; The target parameter early warning threshold set includes target current fluctuation threshold, target pressure fluctuation threshold, target time threshold, target vibration frequency fluctuation threshold, and target amplitude peak threshold; The first bearing current data and the second bearing current data are weighted and concatenated to obtain the target bearing current data; The first grouting pressure data and the second grouting pressure data are weighted and spliced ​​together to obtain the target grouting pressure data; The vibration data of the first drill pipe and the vibration data of the second drill pipe are weighted and spliced ​​to obtain the vibration data of the target drill pipe. The bearing current fluctuation amplitude is calculated based on the target bearing current data, the grouting pressure fluctuation amplitude and the pressure zeroing duration are calculated based on the target grouting pressure data, and the drill pipe vibration frequency fluctuation coefficient and amplitude peak value are obtained based on the target drill pipe vibration data. Based on the bearing current fluctuation amplitude, the grouting pressure fluctuation amplitude, the pressure zeroing duration, the drill rod vibration frequency fluctuation coefficient, the amplitude peak value, the target current fluctuation threshold, the target pressure fluctuation threshold, the target time threshold, the target vibration frequency fluctuation threshold, and the target amplitude peak value, the pile breakage risk probability is calculated using the pile breakage risk probability function. The probability function for the risk of pile failure is: Where P represents the probability of pile failure. Let i be the weight coefficient of the i-th parameter. For the i-th parameter, This represents the amplitude of the holding current fluctuation. This refers to the fluctuation range of grouting pressure. For the duration of zero pressure, This is the frequency fluctuation coefficient of the drill pipe vibration. The peak amplitude, Let i be the target warning threshold corresponding to the i-th parameter. The target current fluctuation threshold, The target pressure fluctuation threshold, The target time threshold, The target vibration frequency fluctuation threshold, The target amplitude peak threshold, Let be the sensitivity adjustment index corresponding to the i-th parameter, and n be the number of parameters that exceed the corresponding target warning threshold. For the quantity exceeding the standard, a, b, c, d, and e are all preset correction values; If the probability of pile breakage reaches the preset pile breakage alarm probability threshold, a pile breakage alarm message will be generated.

2. The method for detecting broken piles as described in claim 1, characterized in that, After generating the broken pile alarm information, the following is also included: Based on the pile breakage alarm information, a shutdown control command is generated. The shutdown control command is used to control the pile driver actuator to stop drilling and grouting operations. After the piling machine actuator stops drilling and grouting operations, if the current drilling depth of the drill rod is less than a preset depth threshold, the first operation is executed. The first operation includes: Determine the depth of the broken pile and obtain the design radius data of the pile body; The backfill height is calculated based on the broken pile depth, and the amount of backfill concrete is calculated based on the backfill height and the pile design radius data. Based on the backfill concrete usage, a backfill control command is generated. The backfill control command is used to instruct the concrete conveying equipment to pour concrete into the broken pile area according to the backfill concrete usage, so that the pouring height reaches the backfill height. In response to receiving a grouting completion signal, a vibration control command is generated. Based on the vibration control command, the vibration equipment is controlled to vibrate the backfilled concrete at a preset vibration frequency until the density parameter of the backfilled concrete reaches a preset density threshold, at which point the vibration operation stops.

3. The method for detecting broken piles as described in claim 1, characterized in that, After generating the broken pile alarm information, the following is also included: Based on the pile breakage alarm information, a shutdown control command is generated. The shutdown control command is used to control the pile driver actuator to stop drilling and grouting operations. After the piling machine actuator stops drilling and grouting operations, if the current drilling depth of the drill rod is not less than a preset depth threshold, then the second operation is performed. The second operation includes: Determine the depth of the broken pile, the pile design parameters, and the estimated data for the crack volume in the broken pile area; Based on the fractured pile depth, pile design parameters, and crack volume estimation data, high-pressure pre-grouting parameters are calculated, including pre-grouting pressure, water-cement ratio, and grouting volume. Based on the high-pressure pre-grouting parameters, a high-pressure grouting control command is generated. The high-pressure grouting control command is used to instruct the high-pressure grouting equipment to inject cement grout into the fractured area of ​​the broken pile. The timing starts when the grouting completion signal is received. After a preset static time, a re-driving pile control command is generated. Based on the re-driving pile control command, the pile driver actuator is controlled to perform re-driving pile operation according to the re-driving pile construction parameters. The re-driving pile construction parameters include the drilling speed and the grouting volume.

4. The method for detecting broken piles as described in claim 1, characterized in that, The soil characteristic data includes void ratio and bearing capacity characteristic values; The determination of the target parameter early warning threshold set based on the soil characteristic data corresponding to the current drill pipe drilling depth includes: The degree of soil looseness is determined based on the void ratio and the bearing capacity characteristic value; The initial warning threshold set is updated based on the soil looseness level to obtain the target parameter warning threshold set.

5. The method for detecting broken piles as described in claim 4, characterized in that, The soil looseness level includes a first looseness level, a second looseness level, and a third looseness level; the looseness level corresponding to the first looseness level is higher than that of the second looseness level, and the looseness level corresponding to the second looseness level is higher than that of the third looseness level; the initial warning threshold set includes an initial current fluctuation threshold, an initial pressure fluctuation threshold, an initial time threshold, an initial vibration frequency fluctuation threshold, and an initial amplitude peak threshold. The initial warning threshold set is updated based on the soil looseness level to obtain the target parameter warning threshold set, including: If the soil looseness level is the first looseness level, then the current fluctuation threshold is used as the target current fluctuation threshold; the initial pressure fluctuation threshold is lowered based on the first adjustment ratio to obtain the target pressure fluctuation threshold; the initial time threshold is shortened based on the second adjustment ratio to obtain the target time threshold; the initial vibration frequency fluctuation threshold is lowered based on the third adjustment ratio to obtain the target vibration frequency fluctuation threshold; the amplitude peak threshold is lowered based on the fourth adjustment ratio to obtain the target amplitude peak threshold; the target current fluctuation threshold, the target pressure fluctuation threshold, the target time threshold, the target vibration frequency fluctuation threshold, and the target amplitude peak threshold are used as the target parameter warning threshold set. If the soil looseness level is the second looseness level, then the current fluctuation threshold is used as the target current fluctuation threshold; the initial pressure fluctuation threshold is lowered based on the fifth adjustment ratio to obtain the target pressure fluctuation threshold; the initial time threshold is shortened based on the sixth adjustment ratio to obtain the target time threshold; the initial vibration frequency fluctuation threshold is lowered based on the seventh adjustment ratio to obtain the target vibration frequency fluctuation threshold; the amplitude peak threshold is lowered based on the eighth adjustment ratio to obtain the target amplitude peak threshold; the target current fluctuation threshold, the target pressure fluctuation threshold, the target time threshold, the target vibration frequency fluctuation threshold, and the target amplitude peak threshold are used as the target parameter warning threshold set. The first adjustment ratio is greater than the fifth adjustment ratio, the second adjustment ratio is greater than the sixth adjustment ratio, the third adjustment ratio is greater than the seventh adjustment ratio, and the fourth adjustment ratio is greater than the eighth adjustment ratio; If the soil looseness level is the third looseness level, then the initial warning threshold set will be used as the target parameter warning threshold set.

6. A broken pile detection device, characterized in that, include: The low-frequency data analysis module is used to synchronously acquire the first bearing current data, the first grouting pressure data, and the first drill pipe vibration data for a first time period based on the first acquisition frequency. The decrease in bearing current is calculated based on the first bearing current data, the decrease in grouting pressure is calculated based on the first grouting pressure data, and the increase in drill pipe vibration frequency is calculated based on the first drill pipe vibration data. The high-frequency data acquisition module is used to acquire the current drilling depth of the drill pipe and simultaneously acquire the second bearing current data, the second grouting pressure data, and the second drill pipe vibration data for a second time period based on the second acquisition frequency if the decrease in the bearing current, the decrease in the grouting pressure, and the increase in the drill pipe vibration frequency meet the over-limit warning conditions; the second acquisition frequency is greater than the first acquisition frequency; the first time period is before the second time period; The dynamic threshold determination module is used to determine a set of target parameter warning thresholds based on the soil characteristic data corresponding to the current drill pipe drilling depth. The target parameter early warning threshold set includes target current fluctuation threshold, target pressure fluctuation threshold, target time threshold, target vibration frequency fluctuation threshold, and target amplitude peak threshold; The pile breakage risk analysis module is used to weight and splice the first bearing current data and the second bearing current data to obtain the target bearing current data. The first grouting pressure data and the second grouting pressure data are weighted and spliced ​​together to obtain the target grouting pressure data; The vibration data of the first drill pipe and the vibration data of the second drill pipe are weighted and spliced ​​to obtain the vibration data of the target drill pipe. The bearing current fluctuation amplitude is calculated based on the target bearing current data, the grouting pressure fluctuation amplitude and the pressure zeroing duration are calculated based on the target grouting pressure data, and the drill pipe vibration frequency fluctuation coefficient and amplitude peak value are obtained based on the target drill pipe vibration data. Based on the bearing current fluctuation amplitude, the grouting pressure fluctuation amplitude, the pressure zeroing duration, the drill rod vibration frequency fluctuation coefficient, the amplitude peak value, the target current fluctuation threshold, the target pressure fluctuation threshold, the target time threshold, the target vibration frequency fluctuation threshold, and the target amplitude peak value, the pile breakage risk probability is calculated using the pile breakage risk probability function. The probability function for the risk of pile failure is: Where P represents the probability of pile failure. Let i be the weight coefficient of the i-th parameter. For the i-th parameter, This represents the amplitude of the holding current fluctuation. This refers to the fluctuation range of grouting pressure. For the duration of zero pressure, This is the frequency fluctuation coefficient of the drill pipe vibration. The peak amplitude, Let i be the target warning threshold corresponding to the i-th parameter. The target current fluctuation threshold, The target pressure fluctuation threshold, The target time threshold, The target vibration frequency fluctuation threshold, The target amplitude peak threshold, Let be the sensitivity adjustment index corresponding to the i-th parameter, and n be the number of parameters that exceed the corresponding target warning threshold. For the quantity exceeding the standard, a, b, c, d, and e are all preset correction values; The broken pile alarm module is used to generate broken pile alarm information if the probability of broken pile risk reaches a preset broken pile alarm probability threshold.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method as described in any one of claims 1 to 5.

8. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1 to 5.

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