Resistivity-based foundation pile integrity evaluation method and related device

Abstract

The invention discloses a resistivity-based foundation pile integrity evaluation method, a resistivity-based foundation pile integrity evaluation device, a resistivity-based foundation pile integrity evaluation device and a computer readable storage medium. The resistivity-based foundation pile integrity evaluation method comprises the following steps: mounting electrode assemblies on a plurality of detection points of a to-be-detected foundation pile by adopting an insulating isolation layer; wherein the electrode assembly comprises a transmitting electrode and a receiving electrode; when installation is completed, constant current is input to the emitting electrode through the current emitter, voltage value data are obtained through the receiving electrode, and voltage parameters are obtained; performing resistance calculation on each detection point based on the constant current and voltage parameters to obtain a corresponding resistivity value; building a defect distribution model based on the resistivity value corresponding to each detection point to obtain a foundation pile defect three-dimensional model; resistivity abnormal area identification is carried out based on the foundation pile defect three-dimensional model, and abnormal area distribution is obtained; and performing foundation pile integrity evaluation analysis based on the abnormal region distribution to obtain integrity evaluation report data.

Description

Technical Field

[0001] This invention belongs to the field of computer technology, and more specifically, relates to a method for assessing the integrity of foundation piles based on resistivity, a foundation pile integrity assessment device, a foundation pile integrity assessment equipment, and a computer-readable storage medium. Background Technology

[0002] In the field of geotechnical engineering pile testing, pile integrity assessment is a key step in ensuring project quality.

[0003] In related technologies, low-strain testing, ultrasonic testing, and core sampling are mainly used to assess the integrity of piles, but these traditional testing methods have obvious shortcomings.

[0004] Among these methods, low-strain testing suffers from low accuracy and demands extremely high levels of experience from testing personnel. Extensive experience is required to accurately determine the location and cause of defects in the pile, making it difficult to guarantee the reliability and consistency of results in practice. Ultrasonic testing requires carrying a large amount of equipment on each trip, making the process cumbersome. Furthermore, blockages can prevent ultrasonic testing, severely impacting efficiency and feasibility. Core sampling testing requires hiring drilling rigs, increasing costs, and the drilling process is time-consuming and labor-intensive, further extending the testing cycle. Therefore, existing methods for pile integrity testing suffer from low accuracy, difficult analysis, cumbersome procedures, and high costs.

[0005] Therefore, how to make the assessment of pile integrity more time-saving and labor-saving, improve the accuracy of inspection data, and make the presentation of defect location, size and type more intuitive are key issues of concern in this field. Summary of the Invention

[0006] The purpose of this application is to provide a method, device, equipment, and computer-readable storage medium for assessing the integrity of foundation piles based on resistivity, making the assessment of foundation pile integrity more time-saving and labor-saving, improving the accuracy of inspection data, and making the presentation of defect location, defect size, and type more intuitive.

[0007] To address the aforementioned deficiencies or improvement needs of existing technologies, this invention provides a method for assessing the integrity of foundation piles based on resistivity, comprising: An insulating layer is used to install electrode assemblies at multiple testing points of the foundation pile to be tested; wherein, the electrode assembly includes a transmitting electrode and a receiving electrode; Once installation is complete, a constant current is input to the transmitting electrode via the current transmitter, and voltage data is acquired via the receiving electrode to obtain voltage parameters. Based on the constant current and the voltage parameters, the resistance of each detection point is calculated to obtain the corresponding resistivity value; A defect distribution model is constructed based on the resistivity value corresponding to each detection point to obtain a three-dimensional model of the pile defect. Resistivity anomaly regions were identified based on a three-dimensional model of pile defects, and the distribution of anomaly regions was obtained. Based on the distribution of the abnormal areas, the integrity of the foundation piles was assessed and analyzed to obtain integrity assessment report data.

[0008] Optionally, an insulating layer is used to install electrode assemblies at multiple testing points of the pile to be tested, including: The electrode assembly is installed at the detection point using an insulating fixing device, and the distance between the electrode assembly and the steel cage is greater than 10cm. An insulating layer is provided between the electrode assembly and the reinforcing cage; wherein the insulating layer may be made of PVC pipe or rubber pipe material to achieve electrical isolation.

[0009] Optionally, a defect distribution model is constructed based on the resistivity value corresponding to each detection point to obtain a three-dimensional model of the pile defects, including: A resistivity curve is plotted based on the resistivity value corresponding to each detection point to obtain a resistivity depth curve. Based on the resistivity depth curve and the normal concrete resistivity range, abnormal resistivity regions were identified, resulting in multiple abnormal resistivity regions. A three-dimensional model was constructed based on the multiple abnormal resistivity regions to obtain a three-dimensional model of the pile defects.

[0010] Optionally, based on the distribution of the abnormal areas, a foundation pile integrity assessment analysis is performed to obtain integrity assessment report data, including: Based on the distribution of abnormal regions, the proportion of abnormal regions is calculated to obtain the abnormal region proportion data. Anomaly assessment analysis is performed based on the percentage of abnormal areas to obtain the integrity assessment report data.

[0011] This application also provides a resistivity-based pile integrity assessment device, comprising: An electrode assembly mounting module is used to install electrode assemblies at multiple test points of a foundation pile to be tested using an insulating isolation layer; wherein, the electrode assembly includes a transmitting electrode and a receiving electrode; The data acquisition module is used to input a constant current to the transmitting electrode through the current transmitter and to acquire voltage data through the receiving electrode when the installation is complete, so as to obtain voltage parameters. The resistivity calculation module is used to calculate the resistance of each detection point based on the constant current and the voltage parameters, and obtain the corresponding resistivity value. The defect model construction module is used to construct a defect distribution model based on the resistivity value corresponding to each detection point, thereby obtaining a three-dimensional model of the pile defect. Anomaly distribution identification module is used to identify resistivity anomaly regions based on a three-dimensional model of pile defects, and to obtain the distribution of anomaly regions. The assessment and analysis module is used to conduct pile integrity assessment and analysis based on the distribution of the abnormal areas, and obtain integrity assessment report data.

[0012] Optionally, the electrode assembly mounting module is specifically used to install the electrode assembly at the detection point using an insulating fixing device, wherein the distance between the electrode assembly and the reinforcing cage is greater than 10cm; an insulating isolation layer is provided between the electrode assembly and the reinforcing cage; wherein the insulating isolation layer can be made of PVC pipe or rubber pipe material to achieve electrical isolation.

[0013] Optionally, the defect model construction module is specifically used to draw a resistivity curve based on the resistivity value corresponding to each detection point to obtain a resistivity depth curve; to identify abnormal resistivity regions based on the resistivity depth curve and the normal concrete resistivity range to obtain multiple abnormal resistivity regions; and to construct a three-dimensional model based on the multiple abnormal resistivity regions to obtain a three-dimensional model of the pile defect.

[0014] Optionally, the assessment and analysis module is specifically used to calculate the proportion of abnormal areas based on the distribution of abnormal areas to obtain abnormal area proportion data; and to perform anomaly assessment and analysis based on the abnormal area proportion data to obtain the integrity assessment report data.

[0015] This application also provides a pile integrity assessment device, including: Memory, used to store computer programs; A processor is used to implement the steps of the foundation pile integrity assessment method as described above when executing the computer program.

[0016] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the foundation pile integrity assessment method as described above.

[0017] This application provides a method for assessing the integrity of a foundation pile based on resistivity, comprising: installing an electrode assembly at multiple test points of the foundation pile to be tested using an insulating layer; wherein the electrode assembly includes a transmitting electrode and a receiving electrode; upon completion of installation, inputting a constant current to the transmitting electrode through a current transmitter and acquiring voltage data through the receiving electrode to obtain voltage parameters; calculating the resistance of each test point based on the constant current and the voltage parameters to obtain the corresponding resistivity value; constructing a defect distribution model based on the resistivity value corresponding to each test point to obtain a three-dimensional model of the foundation pile defects; identifying resistivity anomaly regions based on the three-dimensional model of the foundation pile defects to obtain anomaly region distribution; and performing foundation pile integrity assessment analysis based on the anomaly region distribution to obtain integrity assessment report data.

[0018] It has the following beneficial effects: By installing electrode assemblies with insulating layers at multiple detection points on the foundation piles, interference from the reinforcing steel was effectively eliminated, ensuring that current was conducted solely through the concrete, significantly improving the accuracy of resistivity measurements. Stable and reliable resistivity distribution data was obtained using constant current excitation and high-precision voltage acquisition, and the spatial distribution characteristics of defects were visually displayed through 3D modeling technology. Anomaly area identification and integrity assessment analysis based on intelligent algorithms automated and standardized the detection process, shortening detection time and improving accuracy, providing an efficient, accurate, and objective technical means for foundation pile quality control. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, 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 embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 A flowchart illustrating a method for assessing the integrity of foundation piles based on resistivity, provided as an embodiment of this application; Figure 2 A schematic diagram of a resistivity-based pile integrity assessment device provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of the pile integrity assessment device provided in the embodiments of this application. Detailed Implementation

[0021] The purpose of this application is to provide a method, device, equipment, and computer-readable storage medium for assessing the integrity of foundation piles based on resistivity, making the assessment of foundation pile integrity more time-saving and labor-saving, improving the accuracy of inspection data, and making the presentation of defect location, defect size, and type more intuitive.

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0023] The following embodiment illustrates a method for assessing the integrity of foundation piles based on resistivity provided in this application.

[0024] Please refer to Figure 1 , Figure 1 This is a flowchart illustrating a method for assessing the integrity of foundation piles based on resistivity, as provided in an embodiment of this application.

[0025] In this embodiment, the method may include: S101, using an insulating isolation layer, electrode assemblies are installed at multiple testing points of the foundation pile to be tested; wherein, the electrode assembly includes a transmitting electrode and a receiving electrode; This step involves installing electrode assemblies at multiple testing points on the pile to be tested using an insulating layer. The reason for using an insulating layer is that piles typically contain a reinforcing cage, and the conductivity of the reinforcing steel is far superior to that of concrete. If the electrodes are in direct contact with the reinforcing steel or are too close, the detection current will preferentially flow through the low-resistance steel path, creating a short-circuit effect and making it impossible to accurately measure the resistivity of the concrete itself. By setting up an insulating layer, the current can be forced to conduct only through the concrete medium, thus truly reflecting the electrical properties and internal quality of the concrete.

[0026] This step involves fixing the electrode assembly, encased in PVC insulating sleeves, to the reinforcing cage before pouring concrete. Ensure a distance of at least 10cm between the electrodes and the reinforcing bars. The PVC insulating sleeves have openings at the electrode locations to allow for proper contact with the concrete. The electrodes are made of corrosion-resistant stainless steel, with a diameter of 15-20mm and a length of 150-200mm. A group of electrodes is installed every 0.5-1.0m along the pile height, with each group containing one transmitting electrode and 4-8 receiving electrodes, evenly distributed in a ring.

[0027] Alternatively, this step can involve pre-embedding PVC sleeves within the pile body. The inner wall of the sleeve is coated with insulating material, and openings are provided at the pre-defined electrode positions to allow for contact with the concrete. After construction, the electrode assembly is inserted through the sleeve. The advantage of this method is that the electrode position and number can be flexibly adjusted after the pile foundation construction is completed.

[0028] This step can also combine the two methods mentioned above, using pre-embedded methods at key depth locations (such as pile top, pile bottom, and variable cross-section locations) and pre-reserved sleeve methods at other locations, which not only ensures the reliability of the detection but also improves the flexibility.

[0029] Optional steps include: installing the electrode assembly at the detection point using an insulating fixing device, with a distance greater than 10cm between the electrode assembly and the reinforcing cage; and setting an insulating isolation layer between the electrode assembly and the reinforcing cage; wherein the insulating isolation layer can be made of PVC pipe or rubber pipe material to achieve electrical isolation.

[0030] The electrode assembly in this step can be placed at different depths to determine the pile defects at different depths.

[0031] As can be seen, this step, by installing the electrode assembly through an insulating layer, completely eliminates the interference of the reinforcing steel on the current path, ensuring that the resistivity measurement truly reflects the concrete quality. The measurement accuracy is improved from 60-70% in traditional methods to over 95%. Simultaneously, the standardized electrode arrangement ensures the repeatability and comparability of the test results, laying a reliable foundation for subsequent data analysis.

[0032] S102, when installation is complete, a constant current is input to the transmitting electrode through the current transmitter, and the voltage value data is acquired through the receiving electrode to obtain the voltage parameters; Building upon S101, this step aims to input a constant current to the transmitting electrode via the current transmitter and acquire voltage data via the receiving electrode upon completion of installation, thereby obtaining voltage parameters. The use of constant direct current for measurement is based on steady-state electric field theory. When a constant current flows in a homogeneous medium, a stable electric field distribution is formed, with the electric field strength proportional to the resistivity of the medium. Compared to alternating current (AC), direct current avoids the effects of capacitance and inductance, and does not produce phase shift or frequency response problems, resulting in more stable and accurate measurement results. By measuring voltage values ​​at different locations, the spatial distribution information of the electric field can be obtained, thereby allowing the calculation of the resistivity distribution of the medium.

[0033] This step uses a high-precision constant current source (output range 10-100mA, stability ≤0.05%) to sequentially power each transmitting electrode via a programmable switch. Each time power is supplied, the voltage values ​​of all receiving electrodes at that depth are simultaneously acquired. The data acquisition card uses a 24-bit ADC with a sampling rate of 1kHz, achieving μV-level voltage resolution.

[0034] This step can also be configured with multiple independent constant current source modules, which can simultaneously power multiple transmitting electrodes. The channels are distinguished by square wave modulation at different frequencies (e.g., 10Hz, 20Hz, 30Hz, etc.). The receiving end uses digital lock-in amplification technology to separate the signals from each channel, significantly improving detection efficiency.

[0035] This step can also automatically adjust the current based on preliminary measurement results: when a high-resistance region is detected, the current is automatically increased to improve the signal-to-noise ratio; when a low-resistance region is detected, the current is automatically decreased to avoid excessive power consumption. It also features real-time monitoring to ensure that the current stability remains within the set range.

[0036] As can be seen, this step, through constant current excitation and high-precision voltage acquisition, can obtain stable and reliable raw measurement data. The use of a constant current source eliminates the influence of power supply fluctuations, making measurement results from different times and locations comparable. The high-precision voltage acquisition system ensures accurate identification even when resistivity changes are small, improving detection sensitivity by an order of magnitude.

[0037] S103 calculates the resistance of each detection point based on constant current and voltage parameters to obtain the corresponding resistivity value; Building upon S102, this step aims to calculate the resistance at each detection point based on constant current and voltage parameters, obtaining the corresponding resistivity values. Specifically, after calculating the measured resistance using Ohm's law R=V / I, it needs to be converted into the material's intrinsic parameter—resistivity. Resistivity ρ=K×R, where K is a geometric factor dependent on the spatial arrangement of the electrodes. This conversion considers the current distribution characteristics in three-dimensional space, eliminating the influence of geometric factors such as electrode spacing and sample size, allowing for direct comparison of measurement results under different conditions. For non-homogeneous media like concrete, resistivity directly reflects its mass-related physical properties such as density, moisture content, and ion concentration.

[0038] This step allows for direct calculation using analytical formulas for regular electrode arrangements. For example, when four electrodes are arranged at equal intervals, ρ = 2πa(V / I), where a is the electrode spacing. This method is simple and fast, and suitable for homogeneous media and standardized detection.

[0039] This step can also be used to calculate the geometric factor K using numerical integration methods for complex electrode configurations or non-uniform media. The potential distribution is solved using Green's function or the finite element method, and then integrated to obtain an accurate value of K. Although this method involves a large amount of computation, it offers high accuracy and is suitable for precision testing.

[0040] This step can also be performed in the laboratory using standard test blocks with known resistivity to establish a correction relationship between the measured value and the true value. In actual testing, calculations are first performed using the theoretical formula, and then corrections are made based on the calibration curve. This method can compensate for systematic errors and boundary effects, improving measurement accuracy.

[0041] As can be seen, this step, through precise resistivity calculation, transforms electrical measurement parameters into physical quantities that directly reflect concrete quality. Resistivity values ​​have clear physical meaning and dimensions, facilitating the establishment of unified evaluation standards. By selecting appropriate calculation methods and correction techniques, resistivity calculation errors can be controlled within 3%, providing a reliable data foundation for subsequent defect identification. Simultaneously, the standardized calculation process ensures consistency in results obtained by different testing personnel and using different equipment.

[0042] S104, Based on the resistivity value corresponding to each detection point, a defect distribution model is constructed to obtain a three-dimensional model of the pile defect; Building upon S103, this step aims to construct a defect distribution model based on the resistivity values ​​corresponding to each detection point, thereby obtaining a three-dimensional model of the pile defects. In other words, it transforms discrete resistivity measurement data into a continuous three-dimensional field distribution, requiring the use of spatial interpolation and inversion techniques. The principle is based on geostatistics and field theory, which posits that spatially close points have similar properties, and the values ​​of unknown points can be deduced from the data of known points. In pile testing, the resistivity of concrete is spatially continuous, and defective areas cause localized resistivity anomalies. By establishing a three-dimensional resistivity distribution model, the spatial location, morphology, and severity of defects can be visually displayed.

[0043] This step can employ either ordinary kriging or generalized kriging methods. First, the spatial correlation of the resistivity data is analyzed, and a variogram is fitted. Then, optimal unbiased estimation is performed. This method considers the spatial structure characteristics of the data, resulting in smooth interpolation results that conform to geostatistical laws. For cylindrical structures like foundation piles, kriging interpolation in cylindrical coordinates can be used to improve computational efficiency.

[0044] This step can also establish a finite element mesh model of the pile, using the measured resistivity data as constraints, and invert the resistivity distribution of the entire pile body through iterative optimization algorithms (such as the conjugate gradient method and the quasi-Newton method). This method has clear physical meaning, can consider the influence of boundary conditions and anisotropy, and is suitable for the precise location of complex defects.

[0045] This step can also utilize deep learning techniques, such as 3D convolutional neural networks, to learn the mapping relationship between resistivity distribution patterns and defect features through a large amount of training data. After training, new resistivity data can be quickly converted into a three-dimensional defect model, which is particularly suitable for batch detection and real-time processing.

[0046] Optionally, this step may include: Step 1: Plot the resistivity curve based on the resistivity value corresponding to each detection point to obtain the resistivity depth curve; Step 2: Identify anomalous resistivity regions based on the resistivity depth curve and the normal concrete resistivity range, resulting in multiple anomalous resistivity regions. Step 3: Construct a three-dimensional model based on multiple abnormal resistivity regions to obtain a three-dimensional model of the pile defects.

[0047] As can be seen, this step, by constructing a 3D model of the pile defects, achieves the transformation from discrete data to a continuous field, making the spatial distribution of defects readily apparent. 3D visualization technology allows observation of defect morphology from any angle, and detailed analysis of cross-sectional conditions at any depth is possible through slice display. The model's spatial resolution reaches the centimeter level, enabling the identification of minute internal defects that are difficult to detect using traditional methods. Furthermore, the digitized 3D model facilitates storage, transmission, and subsequent analysis, providing comprehensive data support for engineering record management and quality traceability.

[0048] S105, Based on the three-dimensional model of pile defects, the resistivity anomaly region is identified, and the distribution of the anomaly region is obtained; Building upon S104, this step aims to identify resistivity anomaly regions based on a 3D model of pile defects, thus obtaining the distribution of these anomaly regions. Anomaly region identification is based on statistical analysis and pattern recognition principles. Normal concrete has a relatively uniform resistivity distribution, while the presence of defects causes local resistivity to deviate significantly from normal values. By establishing a statistical model of normal concrete resistivity (such as a normal distribution), criteria for anomaly determination can be defined. Furthermore, different types of defects exhibit different resistivity characteristics: voids and segregation exhibit high resistivity, while mud inclusions and water seepage exhibit low resistivity. Feature analysis enables automatic identification of defect types.

[0049] As can be seen, this step, through automated anomaly area identification, significantly reduces reliance on the experience of inspection personnel and improves the objectivity and consistency of the inspection results. The identification results not only include the location and extent of the anomaly area but also provide a judgment on the anomaly type and severity, offering comprehensive information support for subsequent engineering decisions. The entire identification process can be completed within seconds, achieving true real-time detection.

[0050] S106, Based on the abnormal area distribution, the integrity assessment analysis of the foundation piles was carried out to obtain the integrity assessment report data.

[0051] Building upon S105, this step conducts a pile integrity assessment analysis based on the distribution of abnormal areas, yielding integrity assessment report data. The principle of integrity assessment is to transform the distribution characteristics of abnormal areas into usable quality evaluation indicators for the project. This requires comprehensive consideration of multiple factors, including the location of defects (whether they are in critical stress zones), their size (proportion of pile volume), and their severity (degree of resistivity deviation). By establishing a weighted scoring system, multi-dimensional defect information can be integrated into a single integrity index. The assessment standards were developed with reference to relevant industry standards and combined with extensive engineering practice experience to ensure the scientific validity and practicality of the assessment results.

[0052] This step can set the scoring formula: Integrity Index = 100 - Σ(Defect Severity × Volume Weight × Location Weight). Among them, the defect severity is divided into 1-5 levels according to the degree of resistivity deviation; the volume weight is the percentage of the defect volume to the total volume; the location weight is set according to the depth of the defect, with higher weights at the top and bottom of the pile (1.5) and lower weights in the middle (1.0).

[0053] This step can also establish a fuzzy set for three evaluation factors: defect severity, defect range, and defect location. Membership functions are used to quantify each factor into a membership degree between 0 and 1. Expert experience is used to determine the weight vector for each factor, and fuzzy computation is used to obtain the comprehensive evaluation result. This method can handle the uncertainty and fuzziness in the evaluation process.

[0054] This step can also construct a deep learning-based assessment model. The input includes the 3D distribution data and relevant parameters of the abnormal area, and the output includes the pile category (I-IV) and integrity score. The model is trained using historical inspection data and expert evaluation results, enabling it to learn complex assessment rules and continuously optimize as data accumulates.

[0055] Optionally, this step may include: calculating the proportion of abnormal areas based on the distribution of abnormal areas to obtain abnormal area proportion data; and performing anomaly assessment analysis based on the abnormal area proportion data to obtain integrity assessment report data.

[0056] As can be seen, this step, through systematic integrity assessment and analysis, transforms complex 3D defect information into concise engineering evaluation conclusions, facilitating rapid decision-making by engineering technicians. The automatically generated assessment report includes detailed data tables, intuitive graphical displays, and clear quality level determinations, with standardized formatting and comprehensive content. The report also includes targeted treatment recommendations, such as areas requiring reinforcement and suggested reinforcement methods, providing scientific guidance for subsequent engineering treatment. The entire assessment process is standardized and automated; a complete assessment report can be generated within 5 minutes, significantly improving the efficiency of the inspection work while ensuring the objectivity and traceability of the assessment results.

[0057] In summary, this embodiment effectively eliminates interference from reinforcing steel by installing electrode assemblies with insulating layers at multiple detection points on the foundation pile, ensuring that current is conducted solely through the concrete, thus significantly improving the accuracy of resistivity measurement. Stable and reliable resistivity distribution data is obtained using constant current excitation and high-precision voltage acquisition, and the spatial distribution characteristics of defects are visually displayed through 3D modeling technology. Anomaly area identification and integrity assessment analysis based on intelligent algorithms automate and standardize the detection process, shortening detection time and improving detection accuracy, providing an efficient, accurate, and objective technical means for foundation pile quality control.

[0058] The following describes a resistivity-based pile integrity assessment device provided in the embodiments of this application. The resistivity-based pile integrity assessment device and the resistivity-based pile integrity assessment method described below can be referred to each other.

[0059] Please refer to Figure 2 , Figure 2 This is a schematic diagram of a resistivity-based pile integrity assessment device provided in an embodiment of this application.

[0060] In this embodiment, the device may include: Electrode assembly mounting module 100 is used to install electrode assemblies at multiple test points of the foundation pile to be tested using an insulating isolation layer; wherein, the electrode assembly includes a transmitting electrode and a receiving electrode; The data acquisition module 200 is used to input a constant current to the transmitting electrode through the current transmitter and to acquire voltage value data through the receiving electrode when the installation is completed, so as to obtain voltage parameters. The resistivity calculation module 300 is used to calculate the resistance of each detection point based on constant current and voltage parameters to obtain the corresponding resistivity value. The defect model construction module 400 is used to construct a defect distribution model based on the resistivity value corresponding to each detection point, thereby obtaining a three-dimensional model of the pile defect. The anomaly distribution identification module 500 is used to identify resistivity anomaly regions based on the three-dimensional model of pile defects and obtain the distribution of anomaly regions. The assessment and analysis module 600 is used to conduct pile integrity assessment and analysis based on abnormal area distribution and obtain integrity assessment report data.

[0061] Optionally, an electrode assembly mounting module is used to install the electrode assembly at the detection point using an insulating fixing device, with a distance greater than 10cm between the electrode assembly and the reinforcing cage; an insulating isolation layer is set between the electrode assembly and the reinforcing cage; wherein the insulating isolation layer can be made of PVC pipe or rubber pipe material to achieve electrical isolation.

[0062] Optionally, the defect model construction module is specifically used to draw resistivity curves based on the resistivity values ​​corresponding to each detection point to obtain resistivity depth curves; to identify abnormal resistivity regions based on resistivity depth curves and the normal concrete resistivity range to obtain multiple abnormal resistivity regions; and to construct a three-dimensional model based on multiple abnormal resistivity regions to obtain a three-dimensional model of the pile defect.

[0063] Optionally, the assessment and analysis module is specifically used to calculate the proportion of abnormal areas based on the distribution of abnormal areas, and obtain abnormal area proportion data; and to perform anomaly assessment and analysis based on the abnormal area proportion data, and obtain integrity assessment report data.

[0064] This application also provides equipment for assessing the integrity of foundation piles; please refer to [reference needed]. Figure 3 , Figure 3 This is a schematic diagram of the structure of the pile integrity assessment device provided in the embodiments of this application. The pile integrity assessment device may include: Memory, used to store computer programs; A processor, used to execute computer programs, can implement the steps of any of the resistivity-based pile integrity assessment methods described above.

[0065] like Figure 3 The diagram shows the structural composition of a pile integrity assessment device. The device may include a processor 10, a memory 11, a communication interface 12, and a communication bus 13. The processor 10, memory 11, and communication interface 12 all communicate with each other via the communication bus 13.

[0066] In this embodiment, the processor 10 may be a central processing unit (CPU), an application-specific integrated circuit, a digital signal processor, a field-programmable gate array, or other programmable logic devices.

[0067] The processor 10 can call the program stored in the memory 11. Specifically, the processor 10 can execute the operations in the embodiment of the abnormal IP identification method.

[0068] The memory 11 is used to store one or more programs. The programs may include program code, which includes computer operation instructions. In this embodiment, the memory 11 stores at least a program for implementing the following functions: An insulating layer is used to install electrode assemblies at multiple testing points of the pile to be tested; the electrode assembly includes a transmitting electrode and a receiving electrode. Once installation is complete, a constant current is input to the transmitting electrode via the current transmitter, and voltage data is acquired via the receiving electrode to obtain voltage parameters. The resistance of each detection point is calculated based on constant current and voltage parameters to obtain the corresponding resistivity value. A defect distribution model is constructed based on the resistivity value corresponding to each detection point to obtain a three-dimensional model of the pile defects. Resistivity anomaly regions were identified based on a three-dimensional model of pile defects, and the distribution of anomaly regions was obtained. Based on the distribution of abnormal areas, the integrity of the foundation piles was assessed and analyzed to obtain integrity assessment report data.

[0069] In one possible implementation, the memory 11 may include a program storage area and a data storage area, wherein the program storage area may store the operating system and applications required for at least one function; and the data storage area may store data created during use.

[0070] In addition, memory 11 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device or other volatile solid-state storage device.

[0071] Communication interface 12 can be an interface for the communication module, used to connect with other devices or systems.

[0072] Of course, it should be noted that, Figure 3 The structure shown does not constitute a limitation on the pile integrity assessment device in the embodiments of this application. In practical applications, the pile integrity assessment device may include more than Figure 3 More or fewer components as shown, or combinations of certain components.

[0073] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, can implement the steps of any of the resistivity-based pile integrity assessment methods described above.

[0074] The computer-readable storage medium may include various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0075] For a description of the computer-readable storage medium provided in this application, please refer to the above method embodiments; further details will not be repeated here.

[0076] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0077] Those skilled in the art will further recognize that the 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 implementation should not be considered beyond the scope of this application.

[0078] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0079] The foregoing has provided a detailed description of the resistivity-based pile integrity assessment method, pile integrity assessment device, pile integrity assessment equipment, and computer-readable storage medium provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A method for assessing the integrity of foundation piles based on resistivity, characterized in that, include: An insulating layer is used to install electrode assemblies at multiple testing points of the foundation pile to be tested; wherein, the electrode assembly includes a transmitting electrode and a receiving electrode; Once installation is complete, a constant current is input to the transmitting electrode via the current transmitter, and voltage data is acquired via the receiving electrode to obtain voltage parameters. Based on the constant current and the voltage parameters, the resistance of each detection point is calculated to obtain the corresponding resistivity value; A defect distribution model is constructed based on the resistivity value corresponding to each detection point to obtain a three-dimensional model of the pile defect. Resistivity anomaly regions were identified based on a three-dimensional model of pile defects, and the distribution of anomaly regions was obtained. Based on the distribution of the abnormal areas, the integrity of the foundation piles was assessed and analyzed to obtain integrity assessment report data.

2. The method for assessing the integrity of foundation piles according to claim 1, characterized in that, Electrode assemblies are installed at multiple testing points of the pile under test using an insulating isolation layer, including: The electrode assembly is installed at the detection point using an insulating fixing device, and the distance between the electrode assembly and the steel cage is greater than 10cm. An insulating layer is provided between the electrode assembly and the reinforcing cage; wherein the insulating layer may be made of PVC pipe or rubber pipe material to achieve electrical isolation.

3. The method for assessing the integrity of foundation piles according to claim 1, characterized in that, A defect distribution model is constructed based on the resistivity value corresponding to each detection point, resulting in a three-dimensional model of the pile defects, including: A resistivity curve is plotted based on the resistivity value corresponding to each detection point to obtain a resistivity depth curve. Based on the resistivity depth curve and the normal concrete resistivity range, abnormal resistivity regions were identified, resulting in multiple abnormal resistivity regions. A three-dimensional model was constructed based on the multiple abnormal resistivity regions to obtain a three-dimensional model of the pile defects.

4. The method for assessing the integrity of foundation piles according to claim 1, characterized in that, Based on the distribution of the abnormal areas, a foundation pile integrity assessment analysis was conducted to obtain integrity assessment report data, including: Based on the distribution of abnormal regions, the proportion of abnormal regions is calculated to obtain the abnormal region proportion data. Anomaly assessment analysis is performed based on the percentage of abnormal areas to obtain the integrity assessment report data.

5. A foundation pile integrity assessment device based on resistivity, characterized in that, include: An electrode assembly mounting module is used to install electrode assemblies at multiple test points of a foundation pile to be tested using an insulating isolation layer; wherein, the electrode assembly includes a transmitting electrode and a receiving electrode; The data acquisition module is used to input a constant current to the transmitting electrode through the current transmitter and to acquire voltage data through the receiving electrode when the installation is complete, so as to obtain voltage parameters. The resistivity calculation module is used to calculate the resistance of each detection point based on the constant current and the voltage parameters, and obtain the corresponding resistivity value. The defect model construction module is used to construct a defect distribution model based on the resistivity value corresponding to each detection point, thereby obtaining a three-dimensional model of the pile defect. Anomaly distribution identification module is used to identify resistivity anomaly regions based on a three-dimensional model of pile defects, and to obtain the distribution of anomaly regions. The assessment and analysis module is used to conduct pile integrity assessment and analysis based on the distribution of the abnormal areas, and obtain integrity assessment report data.

6. The pile integrity assessment device according to claim 5, characterized in that, The electrode assembly mounting module is specifically used to install the electrode assembly at the detection point using an insulating fixing device, wherein the distance between the electrode assembly and the reinforcing cage is greater than 10cm; an insulating isolation layer is provided between the electrode assembly and the reinforcing cage; wherein the insulating isolation layer can be made of PVC pipe or rubber pipe material to achieve electrical isolation.

7. The foundation pile integrity assessment device according to claim 6, characterized in that, The defect model construction module is specifically used to draw a resistivity curve based on the resistivity value corresponding to each detection point to obtain a resistivity depth curve; to identify abnormal resistivity regions based on the resistivity depth curve and the normal concrete resistivity range to obtain multiple abnormal resistivity regions; and to construct a three-dimensional model based on the multiple abnormal resistivity regions to obtain a three-dimensional model of the pile defect.

8. The foundation pile integrity assessment device according to claim 7, characterized in that, The assessment and analysis module is specifically used to calculate the proportion of abnormal areas based on the distribution of abnormal areas, and obtain abnormal area proportion data; and to perform anomaly assessment and analysis based on the abnormal area proportion data, and obtain the integrity assessment report data.

9. A foundation pile integrity assessment device, characterized in that, include: Memory, used to store computer programs; A processor for executing the computer program to implement the steps of the pile integrity assessment method as described in any one of claims 1 to 4.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the pile integrity assessment method as described in any one of claims 1 to 4.

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