Intelligent concrete durability detection system and method

Abstract

The invention relates to the technical field of concrete detection, in particular to an intelligent concrete durability detection system and method. The method comprises the following steps: acquiring concrete pipeline processing medium information and concrete pipeline burying environment information, and constructing a two-dimensional pipeline influence model according to the concrete pipeline processing medium information and the concrete pipeline burying environment information; a concrete pipeline structure parameter set is obtained, and concrete pipeline degradation trend information is determined based on the concrete pipeline structure parameter set according to the two-dimensional pipeline influence model; and according to the concrete pipeline degradation trend information, evaluating whether the durability of the current concrete pipeline in the use environment is qualified or not, and determining and outputting a durability detection report. According to the invention, the durability dynamic performance of the concrete pipeline in a complex use environment can be accurately reflected, and the evaluation accuracy of the durability of the concrete pipeline is improved.

Description

Technical Field

[0001] This application relates to the field of concrete testing technology, and in particular to an intelligent concrete durability testing system and method. Background Technology

[0002] In modern infrastructure construction, concrete pipes are widely used in various key projects such as water supply, drainage, and sewage discharge. Due to the long-term influence of underground soil and the flowing medium inside the pipe, the durability of concrete pipes has become a key factor affecting their performance and safety.

[0003] Existing durability testing technologies for concrete pipes typically assess durability based on data from a single dimension: pipe material. This makes it difficult to accurately detect the dynamic changes in the durability of concrete pipes under complex operating environments, resulting in durability test results that fail to accurately reflect the true durability changes of concrete pipes. Summary of the Invention

[0004] This application provides an intelligent concrete durability testing system and method to solve the above-mentioned technical problems.

[0005] In a first aspect, this application provides an intelligent method for testing the durability of concrete, the method comprising: Obtain information on the treatment medium and the burial environment of the concrete pipeline; and construct a two-dimensional pipeline influence model based on the information on the treatment medium and the burial environment of the concrete pipeline. Obtain a set of concrete pipe structural parameters, and based on the set of concrete pipe structural parameters, determine the deterioration trend information of the concrete pipe according to the two-dimensional pipe influence model; Based on the information on the deterioration trend of the concrete pipeline, assess whether the durability of the current concrete pipeline in its service environment is up to standard, and determine and output a durability test report.

[0006] This solution employs a targeted coupled analysis of the information on the processing medium and the buried environment of concrete pipelines. This results in a two-dimensional pipeline influence model that reflects the combined effects of the internal liquid medium and the external buried environment on the durability of concrete pipelines. Furthermore, by incorporating a set of concrete pipeline structural parameters, the durability performance of the concrete pipeline under these combined influences is evaluated, revealing the pipeline's deterioration trend. Based on this, the durability of the current concrete pipeline in its operating environment is assessed, and the corresponding durability test report is provided to the testing personnel. This establishes a comprehensive three-dimensional durability assessment system encompassing pipeline, medium, and environment, reflecting the dynamic durability performance of concrete pipelines in their complex operating environments and improving the accuracy of concrete pipeline durability assessments.

[0007] Optionally, the information on the concrete pipeline treatment medium includes information on changes in the pH value of the liquid medium, the uniform temperature of the medium, changes in the concentration of specified ions, changes in the liquid level of the medium, changes in the flow rate, and changes in the liquid impact force. The information on the processing medium of the concrete pipe is obtained through a micro-sensor array spirally arranged along the pipe axis on the inner wall of the experimental concrete pipe and a piezoelectric thin film sensor pre-embedded inside the experimental concrete pipe.

[0008] This scheme uses the axial direction of the concrete pipe as a reference and employs a micro-sensor array and piezoelectric thin-film sensors arranged spirally inside the experimental concrete pipe to collect information on changes in the pH value, temperature, concentration of specified ions, liquid level, flow rate, and impact force of the liquid medium. This reveals the chemical and physical effects of the liquid medium on the durability of the concrete pipe and breaks through the limitations of traditional point-based detection, accurately capturing localized corrosion hotspots at different locations on the pipe wall.

[0009] Optionally, the environmental information for the concrete pipe installation includes soil moisture content, soil redox potential, concentration of microbial metabolites, soil temperature gradient, and soil lateral pressure distribution. The environmental information of the concrete pipe burial site was obtained by using a flexible electrode array arranged circumferentially on the outer surface of the experimental concrete pipe in conjunction with a distributed fiber optic sensor.

[0010] This scheme utilizes a flexible electrode array and distributed optical fiber arranged circumferentially on the outer surface of concrete to collect information on soil moisture content, soil redox potential, concentration of microbial metabolites, soil temperature gradient, and soil lateral pressure distribution in different areas of the outer surface of concrete pipes. This allows for the assessment of the impact of the soil environment on the durability degradation of the outer surface of concrete from electrochemical, biochemical, thermodynamic, and mechanical dimensions.

[0011] Optionally, the step of constructing a two-dimensional pipeline influence model based on the concrete pipeline treatment medium information and the concrete pipeline burial environment information includes: Based on the information of the concrete pipe processing medium, a multiphysics field coupling analysis is performed on the state of the liquid medium inside the concrete pipe to construct a medium erosion dynamics model. Based on the environmental information of the concrete pipe installation, a time-varying effect analysis of the soil environment outside the concrete pipe is conducted to construct a soil erosion diffusion model. Based on the aforementioned medium erosion kinetics model and the aforementioned soil erosion diffusion model, the two-dimensional pipeline influence model is constructed.

[0012] This scheme utilizes multiphysics coupling analysis of the liquid medium state inside concrete pipelines based on the information of the treatment medium, constructing a medium erosion dynamics model to reflect the synergistic effect of chemical corrosion and mechanical stripping caused by the liquid medium inside the concrete pipeline. Based on the information of the concrete pipeline burial environment, a time-varying effect analysis of the soil environment state outside the concrete pipeline is conducted, constructing a soil erosion diffusion model to reflect the impact of the soil environment state on the durability of the concrete pipeline under the influence of time. Based on the medium erosion dynamics model and the soil erosion diffusion model, a two-dimensional pipeline influence model is constructed to accurately characterize the dual influence of the liquid medium and the soil environment state currently experienced by the concrete pipeline.

[0013] Optionally, based on the information about the processing medium in the concrete pipe, the step of performing multiphysics coupling analysis on the state of the liquid medium inside the concrete pipe and constructing a medium erosion dynamics model includes: Based on the information of the concrete pipe treatment medium, the pH value change information of the liquid medium and the specified ion concentration change information are time-series aligned and correlated to deduce the chemical corrosion effect of the liquid medium inside the concrete pipe on the inner wall of the pipe and construct ion diffusion corrosion effect information. The information on changes in liquid level, flow rate, and liquid impact force is time-aligned. Based on the medium level change information, determine the interface affected by the medium inside the pipeline at different time points; Based on the influence of the internal medium of the pipeline on the interface, the flow velocity change information and the liquid impact force change information are analyzed to deduce the peeling effect of the internal medium of the concrete pipeline on the inner wall of the pipeline and construct the interface peeling effect information. Based on the ion diffusion corrosion effect information and the interface stripping effect information, the medium uniform temperature is introduced as a medium erosion adjustment factor to construct the medium erosion kinetic model.

[0014] This scheme, based on the correlation between changes in the pH value of the liquid medium and changes in the concentration of specified ions, derives the chemical corrosion effect of the liquid medium inside the concrete pipe on the inner wall of the pipe, constructs ion diffusion corrosion effect information to reflect the synergistic corrosion effect of the liquid medium's pH value and the specified ion concentration on the inner wall of the concrete. Based on changes in the liquid level, flow velocity, and liquid impact force, it derives the peeling effect on different influence ranges of the inner wall of the pipe during the flow of the liquid medium, constructs interface peeling effect information, and, based on this, introduces the uniform temperature of the medium as a medium erosion regulating factor to construct a medium erosion kinetic model to reflect the impact of the liquid medium on the durability of the concrete pipe under the triple action of medium temperature, medium corrosion effect, and medium peeling effect.

[0015] Optionally, the step of performing time-varying effect analysis on the soil environmental state outside the concrete pipe based on the information on the buried concrete pipe, and constructing a soil erosion diffusion model, includes: Based on the soil redox potential and the concentration of microbial metabolites, the bioelectrochemical corrosion effect of the external soil on the outer surface of the concrete pipe is deduced, and information on the bioelectrochemical corrosion effect is constructed. Based on the soil moisture content and the soil lateral pressure information, the stress-seepage effect generated by the soil outside the concrete pipe on the outer surface of the pipe is deduced, and the soil stress-seepage coupling effect information is constructed. Based on the soil temperature gradient, the information on bioelectrochemical corrosion effect and the information on soil stress-seepage coupling effect are dynamically corrected to construct the soil erosion diffusion model.

[0016] This scheme analyzes the bioelectrochemical corrosion of concrete pipelines by soil based on soil redox potential and microbial metabolite concentration, obtaining information on the bioelectrochemical corrosion effect. It also analyzes the stress-seepage effect of soil on concrete pipelines based on soil moisture content and lateral pressure, obtaining information on the soil stress-seepage coupling effect. Based on the soil temperature gradient, the bioelectrochemical corrosion effect and the soil stress-seepage coupling effect are dynamically corrected to derive a soil erosion diffusion model. This model accurately reflects the impact of soil state changes on the durability of concrete pipelines under the triple effects of soil temperature, bioelectrochemical corrosion, and soil stress-seepage coupling.

[0017] Optionally, the concrete pipe structure parameter set includes pipe wall thickness distribution information, steel reinforcement protective layer thickness, and concrete porosity. The step of determining the concrete pipe deterioration trend information based on the concrete pipe structure parameter set and the two-dimensional pipe influence model includes: The internal corrosion factor output by the media erosion kinetics model and the external erosion factor output by the soil erosion diffusion model are spatiotemporally aligned to construct a pipeline internal and external erosion coupled dataset. Based on the pipe wall thickness distribution information, the steel reinforcement protective layer thickness and the concrete porosity, a three-dimensional finite element simulation is performed on the pipeline internal and external erosion coupling dataset to simulate the stress-corrosion co-evolution process of pipeline concrete material under different erosion directions and determine the evolution simulation results. Based on the evolution simulation results, the wall thickness degradation rate, crack propagation path, and steel corrosion threshold time are extracted. Combined with the preset pipeline service life standard, the deterioration trend information of the concrete pipeline is generated.

[0018] This solution uses coupled analysis of internal and external erosion and three-dimensional simulation to simultaneously capture the chemical corrosion, mechanical damage, and environmental interactions experienced by concrete pipelines. It accurately reflects the changes in various durability indicators of concrete pipelines under the coupled state of complex influencing factors. Based on the preset pipeline service life standard, it integrates the changes of various durability indicators within its simulation time step to generate concrete pipeline deterioration trend information, so as to accurately reflect the development status of the durability deterioration trend of concrete pipelines.

[0019] Optionally, the step of spatiotemporally aligning the internal corrosion factor output by the media erosion kinetics model with the external erosion factor output by the soil erosion diffusion model includes: The internal corrosion factor and the external erosion factor are respectively timestamped and the temporal resolution of the internal corrosion factor and the external erosion factor is unified by an interpolation algorithm; Based on the axial coordinate of the pipeline, the internal corrosion factor and the external erosion factor are spatially matched. Considering the circumferential non-uniformity of the pipeline, the circumference of the pipeline is divided into multiple fan-shaped regions, and a regional mapping relationship between the internal corrosion factor and the external erosion factor is established.

[0020] This scheme eliminates time deviations in internal and external erosion data through high-precision timestamp calibration and interpolation, captures transient coupling effects, improves the positioning accuracy of each region through an axial-circular grid mapping mechanism, and establishes the correlation between the corresponding internal corrosion factors and external erosion factor data of each region, thereby improving the reliability of the coupling analysis results.

[0021] Optionally, the method further includes: Based on the difference between the average temperature of the medium and the temperature gradient of the soil, a temperature gradient compensation coefficient is introduced, and based on the temperature gradient compensation coefficient, the coupling weight between the internal corrosion factor and the external erosion factor is dynamically adjusted.

[0022] This scheme uses a dynamic compensation mechanism to accurately capture the influence of the temperature difference between the medium and the soil temperature gradient on internal and external corrosion factors of concrete pipes based on the difference between the medium's uniform temperature and the soil temperature gradient. This allows for the adjustment of the contribution weights of internal and external corrosion factors in the three-dimensional finite element simulation, thereby improving the accuracy and scientific rigor of the collaborative analysis of internal and external erosion.

[0023] Secondly, this application provides an intelligent concrete durability testing system, the system comprising: The impact analysis module is used to acquire information on the concrete pipeline treatment medium and the concrete pipeline burial environment, and to construct a two-dimensional pipeline impact model based on the concrete pipeline treatment medium and the concrete pipeline burial environment. The degradation analysis module is used to obtain a set of concrete pipe structural parameters and, based on the set of concrete pipe structural parameters, determine the degradation trend information of the concrete pipe according to the two-dimensional pipe influence model. The durability assessment module is used to assess whether the durability of the current concrete pipeline is up to standard in its service environment based on the information on the deterioration trend of the concrete pipeline, and to determine and output a durability test report. Attached Figure Description

[0024] 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of an application scenario provided in an embodiment of this application; Figure 2 A flowchart illustrating an intelligent concrete durability testing method provided in one embodiment of this application; Figure 3 This is a structural schematic diagram of an intelligent concrete durability testing system provided in an embodiment of this application. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.

[0028] The embodiments of this application will now be described in further detail with reference to the accompanying drawings.

[0029] Existing durability testing technologies for concrete pipes typically assess durability based on data from a single dimension: pipe material. This makes it difficult to accurately detect the dynamic changes in the durability of concrete pipes under complex operating environments, resulting in durability test results that fail to accurately reflect the true durability changes of concrete pipes.

[0030] Based on this, this application provides an intelligent concrete durability testing system and method. It performs targeted coupled analysis of the concrete pipeline's processing medium information and its buried environment information to derive a two-dimensional pipeline influence model that reflects the combined effects of the internal liquid medium and the external buried environment on the concrete pipeline's durability. Furthermore, by combining the concrete pipeline's structural parameter set, it evaluates the durability performance of the concrete pipeline under the aforementioned combined influence, deriving information on the concrete pipeline's deterioration trend. Based on this, it assesses whether the current durability of the concrete pipeline in its operating environment is up to standard, and provides the corresponding durability test report to the testing personnel. This achieves the establishment of a three-in-one durability assessment system for pipeline-medium-environment, reflecting the dynamic durability performance of concrete pipelines in their complex operating environments and improving the accuracy of concrete pipeline durability assessment.

[0031] Figure 1 This is a schematic diagram illustrating an application scenario provided by this application. In the process of durability testing of concrete pipelines, the method provided in this application accurately reflects the dynamic durability performance of concrete pipelines in their complex operating environments, thereby improving the accuracy of durability assessments for concrete pipelines.

[0032] Specifically, the method provided in this application is applied to any server that communicates with both the sensor array and the engineering design party. Through this server, targeted coupling analysis is performed on the concrete pipeline processing medium information and the concrete pipeline burial environment information provided by the sensor array. This yields a two-dimensional pipeline influence model that reflects the combined effects of the internal liquid medium and the external burial environment on the durability of the concrete pipeline. Furthermore, combined with the concrete pipeline structural parameter set provided by the engineering design party, the durability performance of the concrete pipeline under the aforementioned combined influence is evaluated, and the deterioration trend information of the concrete pipeline is obtained. Based on this, the durability of the current concrete pipeline in its operating environment is assessed to determine whether it meets the requirements, and the corresponding durability test report is provided to the testing personnel. This achieves the establishment of a three-in-one durability assessment system for pipeline-medium-environment, reflecting the dynamic durability performance of the concrete pipeline in its complex operating environment and improving the accuracy of concrete pipeline durability assessment.

[0033] For specific implementation details, please refer to the following examples.

[0034] Figure 2This is a flowchart illustrating an intelligent concrete durability testing method according to an embodiment of this application. The method of this embodiment can be applied to the server in the above scenario. Figure 2 As shown, the method includes: S201. Obtain information on the treatment medium and the buried environment of the concrete pipeline. Based on the information on the treatment medium and the buried environment of the concrete pipeline, construct a two-dimensional pipeline influence model.

[0035] Information on the processing medium of concrete pipes can be a set of data used to characterize the properties of the liquid medium inside the concrete pipes. This information can be obtained through an array of sensors deployed on the inner wall of the concrete.

[0036] The environmental information of buried concrete pipes can be a set of external soil environmental parameters of the concrete pipes. The environmental information of buried concrete pipes can be obtained by an array of sensors deployed on the outer surface of the concrete pipes.

[0037] The two-dimensional pipeline impact model can be used to characterize the dual effects of internal pipeline erosion and external environmental erosion.

[0038] Specifically, traditional durability testing processes for underground concrete pipes have two major drawbacks: First, they only focus on a single corrosive factor (such as chemical corrosion or mechanical stress), failing to consider the synergistic destructive effect of the coupling effect of internal and external environments on the material; second, static testing methods cannot reflect the dynamic impact of changing environments on the pipe structure. Concrete pipes are mostly used in urban drainage systems and agricultural irrigation facilities, and the influence of internal liquid media and external environment are the main factors causing a decline in the durability of concrete pipes. Therefore, in the process of assessing the durability of concrete pipes, it is necessary to consider the changing trend of concrete pipe durability under the dual coupling effect of internal liquid media and external environment, in order to accurately assess whether the dynamic performance of concrete pipe durability meets the corresponding engineering requirements. By deploying sensors and collecting data on experimental concrete pipes in the same burial and usage environment as the target pipe, information on the concrete pipe treatment medium and the concrete pipe burial environment is obtained. Through targeted analysis and coupling of the concrete pipe treatment medium and burial environment information, a two-dimensional rolling influence model is constructed to achieve the assessment of the dual influence of liquid media and environment on the durability of concrete pipes in dynamic scenarios.

[0039] S202. Obtain the set of concrete pipe structural parameters. Based on the set of concrete pipe structural parameters and the two-dimensional pipe influence model, determine the deterioration trend information of the concrete pipe.

[0040] The concrete pipe structural parameter set can be a set of parameters used to characterize the structural strength characteristics of concrete pipes at the factory. The concrete pipe structural parameter set is provided by the engineering designer.

[0041] Information on the deterioration trend of concrete pipes can be a set of information used to characterize the trend of durability degradation of concrete pipes.

[0042] Specifically, the structural strength characteristics of concrete pipes are the fundamental guarantee of their durability. Concrete pipes with different structural strengths exhibit significant differences in durability degradation under the same installation and usage environment. Therefore, after analyzing and deriving the two-dimensional pipe influence model, it is necessary to substitute the current structural strength characteristics of the concrete pipe into the two-dimensional pipe influence model based on the current set of concrete pipe structural parameters. This allows for a scientific assessment of the durability degradation trend of concrete pipes with current structural strength characteristics under the dual influences mapped in the two-dimensional pipe influence model, thus constructing concrete pipe deterioration trend information. This forms a three-in-one durability assessment system integrating pipe, medium, and environment, ensuring the comprehensiveness and accuracy of concrete pipe durability assessment.

[0043] S203. Based on the information on the deterioration trend of concrete pipelines, assess whether the durability of the current concrete pipelines in their service environment is up to standard, and determine and output a durability test report.

[0044] A durability test report can be used to characterize whether the current durability performance of the tested concrete pipe matches its usage environment.

[0045] Specifically, the deterioration trend information of concrete pipes reflects the deterioration characteristics of concrete pipe durability over time under its corresponding service environment. Based on the service life of concrete pipes required by the engineering designer, the deterioration trend information of concrete pipes is analyzed, and the deterioration characteristics of concrete pipes over time are substituted into the service life of concrete pipes for evaluation to determine whether the durability of concrete pipes is qualified. The data set of changes in the durability of concrete pipes under the corresponding service life is recorded to form a durability test report. Through data visualization technology, the durability test report is visualized and then provided to the relevant testing personnel using human-computer interaction devices, such as high-definition display screens. This allows the testing personnel to intuitively grasp the durability change characteristics of concrete pipes and provides a data basis for the testing personnel to give corresponding suggestions.

[0046] This solution employs a targeted coupled analysis of the information on the processing medium and the buried environment of concrete pipelines. This results in a two-dimensional pipeline influence model that reflects the combined effects of the internal liquid medium and the external buried environment on the durability of concrete pipelines. Furthermore, by incorporating a set of concrete pipeline structural parameters, the durability performance of the concrete pipeline under these combined influences is evaluated, revealing the pipeline's deterioration trend. Based on this, the durability of the current concrete pipeline in its operating environment is assessed, and the corresponding durability test report is provided to the testing personnel. This establishes a comprehensive three-dimensional durability assessment system encompassing pipeline, medium, and environment, reflecting the dynamic durability performance of concrete pipelines in their complex operating environments and improving the accuracy of concrete pipeline durability assessments.

[0047] In some embodiments, the information on the concrete pipe treatment medium includes information on changes in the pH value of the liquid medium, the uniform temperature of the medium, the changes in the concentration of a specified ion, the changes in the liquid level of the medium, the changes in the flow rate, and the changes in the liquid impact force. The information on the concrete pipe treatment medium is obtained by a micro-sensor array spirally arranged along the pipe axis on the inner wall of the experimental concrete pipe and a piezoelectric thin film sensor pre-embedded inside the experimental concrete pipe.

[0048] Information on changes in the pH value of liquid media can be used to characterize the fluctuation of acidity or alkalinity of the liquid inside the pipeline over time, reflecting the strength of chemical corrosivity of the liquid media inside the concrete pipeline. This information can be obtained through continuous sampling using a miniature pH sensor array.

[0049] The average temperature of the medium can be the average temperature of the liquid medium inside the concrete pipe over a certain period of time. It is used to evaluate the accelerating effect of temperature on the corrosion rate and can be obtained by taking the arithmetic mean of multiple measurements from an embedded thermocouple sensor group.

[0050] The specified ion concentration change information can be the concentration change data of corrosive ions (such as chloride ions, sulfate ions, etc.) in the liquid medium inside the concrete pipe, which is used to reflect the chemical corrosion properties of the liquid medium and can be measured by a micro ion selective electrode array.

[0051] Medium level change information can reflect the fluctuation of the liquid medium filling height in the pipeline over time, and is used to characterize the influence range of the liquid medium on the inner wall of the pipeline. It can be continuously recorded by a capacitive liquid level sensor.

[0052] Flow velocity variation information can describe the temporal variation characteristics of the flow velocity of liquid medium in a pipeline. It is used to indirectly map the interfacial peeling effect of the liquid medium on the inner wall of the pipeline under the influence of the liquid medium flow velocity. It can be obtained by continuous recording by a liquid flow velocity sensor.

[0053] Information on changes in liquid impact force can reflect the dynamic impact of the liquid medium on the inner wall of the pipe. It is used to indirectly map the interfacial peeling effect of the liquid medium on the inner wall of the pipe under the influence of liquid medium impact, and is obtained through a piezoelectric thin film sensor.

[0054] Experimental concrete pipes can be experimental subjects used to capture the effects of dynamic factors on current types of concrete pipes.

[0055] Specifically, existing detection processes for assessing the impact of internal liquid media on the durability of concrete pipes have the following shortcomings: they rely on fixed-point sampling, making it difficult to capture dynamic changes in liquid media parameters (such as peak impact force and ion concentration pulses); single-parameter detection cannot reveal the multi-physics coupling mechanism (such as the synergistic effect of flow velocity-impact force-ion migration); and static measurements cannot reflect the cumulative damage effect of the dynamic characteristics of the medium on the pipe wall. By using the pipe axis as a reference, a spiral arrangement of micro-sensor arrays and piezoelectric film sensors is employed. The micro-sensor arrays are in direct contact with the liquid medium to acquire information on changes in pH value, uniform temperature, specified ion concentration, liquid level, and flow velocity. The piezoelectric film sensors are located inside the pipe wall to detect changes in liquid impact force. This approach overcomes the limitations of traditional point-based detection methods, establishes a three-dimensional parameter field model, and can accurately capture localized corrosion hotspots at different locations on the pipe wall.

[0056] This scheme uses the axial direction of the concrete pipe as a reference and employs a micro-sensor array and piezoelectric thin-film sensors arranged spirally inside the experimental concrete pipe to collect information on changes in the pH value, temperature, concentration of specified ions, liquid level, flow rate, and impact force of the liquid medium. This reveals the chemical and physical effects of the liquid medium on the durability of the concrete pipe and breaks through the limitations of traditional point-based detection, accurately capturing localized corrosion hotspots at different locations on the pipe wall.

[0057] In some embodiments, the environmental information of the concrete pipe burial includes soil moisture content, soil redox potential, concentration of microbial metabolites, soil temperature gradient, and soil lateral pressure distribution; the environmental information of the concrete pipe burial is obtained by a flexible electrode array circumferentially arranged on the outer surface of the experimental concrete pipe in conjunction with a distributed fiber optic sensor.

[0058] Soil moisture content can be a dynamic parameter that characterizes the proportion of water mass in the soil around a pipeline, reflecting soil permeability and electrochemical activity. It can be measured using Brillouin optical time-domain reflectometry (BOTDR) technology with distributed fiber optic sensors.

[0059] Soil redox potential can be an electrochemical indicator that quantifies the electron transfer capacity in soil and is used to reflect the soil's redox capacity. It can be measured by platinum microelectrodes (50 μm in diameter) in a flexible electrode array.

[0060] The concentration of microbial metabolites can be the concentration of sulfides produced by sulfate-reducing bacteria, which is used to assess the soil microbial corrosion activity. It can be detected by a biosensor unit in a flexible electrode array, with the sensor using carbon nanotube electrodes modified with sulfide oxidase.

[0061] The soil temperature gradient can be the rate of change of soil temperature along the axial and radial directions of the pipeline, reflecting the spatial difference in the influence of heat conduction on the corrosion rate. The temperature distribution can be analyzed by the Raman scattering intensity ratio in a distributed fiber optic sensor.

[0062] Soil lateral pressure distribution information can be the spatial distribution characteristics of the horizontal pressure values ​​of the soil on the outer surface of the pipeline, reflecting the stress state of the concrete pipeline buried in the soil, and is measured by a fiber grating array (FBG) of distributed fiber optic sensors.

[0063] A flexible electrode array can be a sensor composed of stretchable flexible electrode sensors that can circumferentially conform to the outer surface of a concrete pipe.

[0064] Distributed fiber optic sensors can be armored fiber optic sensors that are circumferentially deployed along the outer surface of a pipe.

[0065] Specifically, soil has multiple load effects on the durability of concrete pipes, mainly reflected in four dimensions: electrochemistry (corresponding to soil moisture content and soil redox potential), biochemistry (corresponding to the concentration of microbial metabolites), thermodynamics (corresponding to soil temperature gradient), and mechanics (soil lateral pressure distribution information). By deploying a flexible electrode array and distributed optical fibers circumferentially on the outer surface of the concrete pipe, the parameters corresponding to the above four dimensions in different areas of the outer surface of the concrete pipe are collected to reflect the durability degradation of the outer surface of the concrete pipe under the influence of soil four-dimensional factors.

[0066] This scheme utilizes a flexible electrode array and distributed optical fiber arranged circumferentially on the outer surface of concrete to collect information on soil moisture content, soil redox potential, concentration of microbial metabolites, soil temperature gradient, and soil lateral pressure distribution in different areas of the outer surface of concrete pipes. This allows for the assessment of the impact of the soil environment on the durability degradation of the outer surface of concrete from electrochemical, biochemical, thermodynamic, and mechanical dimensions.

[0067] In some embodiments, based on the information of the processing medium in the concrete pipeline, a multi-physics field coupling analysis is performed on the state of the liquid medium inside the concrete pipeline to construct a medium erosion dynamics model; based on the information of the concrete pipeline burial environment, a time-varying effect analysis is performed on the state of the soil environment outside the concrete pipeline to construct a soil erosion diffusion model; and based on the medium erosion dynamics model and the soil erosion diffusion model, a two-dimensional pipeline influence model is constructed.

[0068] Multiphysics coupling analysis can be a process of comprehensively analyzing the interaction of physical fields such as chemical corrosion (ion diffusion), fluid impact (stripping effect), and temperature conduction involved in the liquid medium inside the pipeline.

[0069] A media erosion kinetic model can be a mathematical model that describes the erosive effect of the liquid medium inside a concrete pipe on the concrete pipe by coupling fluid mechanics, chemical reaction kinetics, and thermodynamics principles.

[0070] Time-varying effect analysis can be based on the dynamic characteristics of soil environment changes over time to analyze the process of soil environment erosion on concrete surface.

[0071] Soil erosion diffusion models can be models that integrate geomechanics, electrochemistry, and microbiology theories to describe the erosive effect of the external soil environment on the surface of concrete pipes.

[0072] Specifically, existing technologies, when assessing the negative impact of liquid media on concrete durability, typically treat chemical corrosion and mechanical stripping effects separately. This leads to significant discrepancies between the assessment results and actual conditions. In the actual use of concrete pipes, the internal liquid media both scour the pipe wall surface (mechanical stripping effect) and promote the diffusion of corrosive ions (chemical corrosion effect). By using a multi-physics coupling mechanism, coupling fluid mechanics, chemical reaction kinetics, and thermodynamics, the degradation gain of liquid media on concrete pipe durability under different physical fields can be quantified, constructing a media erosion kinetic model. This model, based on the input information of the concrete pipe treatment medium, outputs quantitative data characterizing the degree of influence of the liquid medium on the rate of degradation of concrete pipe durability. The impact of the soil environment on concrete pipelines exhibits a typical time-varying effect, meaning that the influence of the soil environment on concrete pipelines depends on time changes. By analyzing the time-varying effect of the soil environment state outside the concrete pipeline on the buried environment information of the concrete pipeline, the degradation gain of the soil environment state on the durability of the concrete pipeline under the influence of time is quantified, and a media erosion kinetic model is constructed. This model outputs quantitative data that can characterize the degree of influence of the soil environment state on the durability degradation rate of the concrete pipeline based on the input concrete pipeline buried environment information. Integrating the quantitative data given by the above-mentioned media erosion kinetic model and soil erosion diffusion model, a two-dimensional pipeline impact model is constructed to characterize the dual impact of the current concrete pipeline from the liquid medium and the soil environment state.

[0073] This scheme utilizes multiphysics coupling analysis of the liquid medium state inside concrete pipelines based on the information of the treatment medium, constructing a medium erosion dynamics model to reflect the synergistic effect of chemical corrosion and mechanical stripping caused by the liquid medium inside the concrete pipeline. Based on the information of the concrete pipeline burial environment, a time-varying effect analysis of the soil environment state outside the concrete pipeline is conducted, constructing a soil erosion diffusion model to reflect the impact of the soil environment state on the durability of the concrete pipeline under the influence of time. Based on the medium erosion dynamics model and the soil erosion diffusion model, a two-dimensional pipeline influence model is constructed to accurately characterize the dual influence of the liquid medium and the soil environment state currently experienced by the concrete pipeline.

[0074] In some embodiments, based on the information of the treatment medium in the concrete pipeline, the pH value change information of the liquid medium and the specified ion concentration change information are time-series aligned and correlated to deduce the chemical corrosion effect of the liquid medium inside the concrete pipeline on the inner wall of the pipeline, and construct ion diffusion corrosion effect information; the liquid level change information, flow velocity change information, and liquid impact force change information of the medium are time-series aligned; based on the liquid level change information, the interface of the medium inside the pipeline at different time points is determined; based on the interface of the medium inside the pipeline, the flow velocity change information and liquid impact force change information are analyzed to deduce the peeling effect of the medium inside the concrete pipeline on the inner wall of the pipeline, and construct interface peeling effect information; based on the ion diffusion corrosion effect information and interface peeling effect information, the medium uniform temperature is introduced as a medium erosion regulating factor to construct a medium erosion kinetic model.

[0075] Time alignment can be a process of synchronizing the time axis of heterogeneous data from multiple sources.

[0076] Correlation analysis can be the process of analyzing the coupling relationship between changes in the pH value of a liquid medium and changes in the concentration of a specified ion.

[0077] Information on ion diffusion corrosion effects can be used to characterize the migration of corrosive ions in concrete pores.

[0078] The interface affected by the internal medium of a pipeline can be the range of the inner wall of the pipeline affected by the liquid medium inside the concrete pipeline.

[0079] Information on the interface peeling effect can be information describing the effect of fluid shear force on the peeling of concrete on the pipe wall surface.

[0080] The medium erosion adjustment factor can be a parameter that reflects the degree of influence of medium temperature on the corrosive force of liquid medium.

[0081] Specifically, independent analysis of liquid medium pH changes and specified ion concentration changes neglects the dynamic interaction between these two data points. For example, a sudden drop in pH often lags behind a sudden increase in sulfate ion concentration by 2-3 hours, a correlation that traditional discrete analysis cannot capture. The DTW (Dynamic Time Warping) algorithm is used to align the liquid medium pH changes and specified ion concentration changes over time, avoiding "spurious correlations" caused by data acquisition delays. Then, the Pearson correlation coefficient algorithm is used to evaluate the correlation between liquid medium pH and specified ion concentration at different time points. Finally, under the correlation between liquid medium pH and specified ion concentration, a linear relationship between the correlation and the corrosion rate of concrete pipes is fitted to obtain information on ion diffusion corrosion effects. Simultaneously, the DTW algorithm is used to align medium level changes, flow rate changes, and liquid impact force changes over time. Based on the medium level change information, the area of ​​the pipe wall submerged by the internal liquid mechanism at different time points is extracted to determine the time... By analyzing the influence of the internal medium on the interface of the pipe, and combining information on changes in flow velocity and liquid impact force, the liquid flow velocity and liquid impact force at each interface are determined. Then, using the Reynolds time-averaged algorithm, the near-wall shear force generated by the liquid medium at different time points on each interface is quantified based on the liquid flow velocity and liquid impact force. The greater the near-wall shear force, the stronger the corresponding peeling effect, thus constructing interface peeling effect information. Based on experimental data, a liquid medium temperature-chemical reaction rate mapping table and a liquid medium temperature-peeling rate mapping table are established. Using these two mapping tables, the gain coefficients of the current medium average temperature on the corrosion effect and peeling effect are retrieved. The ion diffusion corrosion effect information and the decryption peeling effect information are then corrected based on the two gain coefficients, and integrated to obtain a media erosion kinetic model.

[0082] This scheme, based on the correlation between changes in the pH value of the liquid medium and changes in the concentration of specified ions, derives the chemical corrosion effect of the liquid medium inside the concrete pipe on the inner wall of the pipe, constructs ion diffusion corrosion effect information to reflect the synergistic corrosion effect of the liquid medium's pH value and the specified ion concentration on the inner wall of the concrete. Based on changes in the liquid level, flow velocity, and liquid impact force, it derives the peeling effect on different influence ranges of the inner wall of the pipe during the flow of the liquid medium, constructs interface peeling effect information, and, based on this, introduces the uniform temperature of the medium as a medium erosion regulating factor to construct a medium erosion kinetic model to reflect the impact of the liquid medium on the durability of the concrete pipe under the triple action of medium temperature, medium corrosion effect, and medium peeling effect.

[0083] In some embodiments, based on soil redox potential and microbial metabolite concentration, the bioelectrochemical corrosion effect of the soil outside the concrete pipe on the outer surface of the pipe is deduced, and bioelectrochemical corrosion effect information is constructed; based on soil moisture content and soil lateral pressure information, the stress-seepage effect of the soil outside the concrete pipe on the outer surface of the pipe is deduced, and soil stress-seepage coupling effect information is constructed; based on soil moisture content, the bioelectrochemical corrosion effect information and soil stress-seepage coupling effect information are dynamically corrected, and a soil erosion diffusion model is constructed.

[0084] Bioelectrochemical corrosion can be a material corrosion process involving microorganisms.

[0085] Bioelectrochemical corrosion effect information can be a dynamic parameter set characterizing the synergistic acceleration of pipeline outer wall corrosion by microbial metabolites and soil redox reactions.

[0086] Stress seepage can be caused by soil moisture penetrating into the interior of a concrete pipe under stress.

[0087] Soil stress-seepage coupling effect information can be a quantitative indicator describing the damage to the pipe wall structure caused by the combined effects of soil lateral pressure and seepage hydraulic gradient. Specifically, the microbial corrosion effect in soil is not an independent biochemical reaction; it is dynamically correlated with soil redox potential. Based on the changes in soil redox potential and microbial metabolite concentrations over different time periods, an exponential decay correlation between soil redox potential and microbial metabolite concentrations is established, yielding information on the bioelectrochemical corrosion effect. The infiltration of soil water into concrete pipes is directly affected by soil moisture content and indirectly by soil lateral pressure. Higher soil moisture content leads to greater infiltration, while higher soil lateral pressure results in greater infiltration intensity. Based on Darcy's law transient formula, the pore water pressure gradient in the corresponding area is quantified according to soil moisture content and soil lateral pressure, serving as a measure of the intensity of the soil stress-seepage coupling effect. A higher pore water pressure gradient indicates a greater infiltration intensity. The larger the soil temperature, the stronger the stress-seepage coupling effect. This information is used to construct soil stress-seepage coupling effect data, comprehensively reflecting the permeation of soil moisture into concrete pipes, and indirectly reflecting the negative impact of soil condition on the durability of concrete pipes. Based on experimental data, mapping tables are established for soil temperature, bioelectrochemical corrosion effect, and soil stress-seepage coupling effect. Using these two mapping tables, the gain coefficients of current soil temperature on corrosion and stripping effects are retrieved. Based on the soil temperature gradient, the information on bioelectrochemical corrosion effect and soil stress-seepage coupling effect is dynamically corrected, resulting in a soil erosion diffusion model. This model reflects the impact of soil condition changes on the durability of concrete pipes under the triple effects of soil temperature, bioelectrochemical corrosion effect, and soil stress-seepage coupling effect.

[0088] This scheme analyzes the bioelectrochemical corrosion of concrete pipelines by soil based on soil redox potential and microbial metabolite concentration, obtaining information on the bioelectrochemical corrosion effect. It also analyzes the stress-seepage effect of soil on concrete pipelines based on soil moisture content and lateral pressure, obtaining information on the soil stress-seepage coupling effect. Based on the soil temperature gradient, the bioelectrochemical corrosion effect and the soil stress-seepage coupling effect are dynamically corrected to derive a soil erosion diffusion model. This model accurately reflects the impact of soil state changes on the durability of concrete pipelines under the triple effects of soil temperature, bioelectrochemical corrosion, and soil stress-seepage coupling.

[0089] In some embodiments, the internal corrosion factor output by the media erosion kinetic model and the external erosion factor output by the soil erosion diffusion model are spatiotemporally aligned to construct a coupled dataset of internal and external erosion of the pipeline. Based on the pipe wall thickness distribution information, the thickness of the steel reinforcement protective layer and the concrete porosity, a three-dimensional finite element simulation is performed on the coupled dataset of internal and external erosion of the pipeline to simulate the stress-corrosion co-evolution process of the pipeline concrete material under different erosion directions and determine the evolution simulation results. According to the evolution simulation results, the pipe wall thickness degradation rate, crack propagation path and steel reinforcement corrosion threshold time are extracted, and combined with the preset pipeline service life standard, the deterioration trend information of the concrete pipeline is generated.

[0090] Internal corrosion factor can be a set of parameters used to characterize the degree of corrosion of concrete pipes by their internal liquid media at different time stages.

[0091] External erosion factors can be a set of parameters that characterize the degree of impact of external soil erosion on concrete pipes at different time stages.

[0092] Spatiotemporal alignment can be an operation that aligns data in both time and space dimensions in internal corrosion factors and external erosion factors.

[0093] The pipeline internal and external erosion coupling dataset can be a data set that includes internal corrosion factors, external erosion factors, and the coupling weights corresponding to the two factors, obtained by integrating the dataset after spatiotemporal alignment.

[0094] The pipe wall thickness distribution information can be the thickness information of each region of the concrete pipe.

[0095] The thickness of the concrete protective layer can be the thickness of the anti-corrosion layer on the surface of the reinforcing bars inside the concrete pipe.

[0096] Concrete porosity can be defined as the percentage of the volume of pores within a concrete material relative to the total volume of the material.

[0097] Three-dimensional finite element simulation can refer to the process of numerically simulating the coupling effects of multiple physics fields by discretizing the geometry of a pipeline into three-dimensional mesh elements and combining them with the constitutive equations of materials.

[0098] The stress-corrosion co-evolution process can be used to describe the interactive mechanism of crack propagation, pore connectivity, and steel corrosion in pipeline concrete materials under the dual effects of mechanical stress and chemical corrosion.

[0099] The pipe wall thickness degradation rate can be used to characterize the rate at which the thickness loss of the pipe wall due to internal and external erosion changes over time.

[0100] Crack propagation path can be a spatial trajectory that reflects the main crack in a concrete pipe, starting from the inner or outer wall and developing along the weak areas of the material.

[0101] The steel reinforcement corrosion threshold time can refer to the time when the steel reinforcement protective layer completely fails, causing the steel reinforcement to begin to corrode significantly.

[0102] The preset service life standard for pipelines can be the service life requirement for concrete pipelines during the engineering design stage.

[0103] Specifically, the internal corrosion factors output by the media erosion kinetic model and the external erosion factors output by the soil erosion diffusion model are time-stamped and calibrated. Cubic spline interpolation is used to unify the time step, and unified coordinates are established for the regions corresponding to each data point to achieve spatiotemporal alignment of the internal and external corrosion factors, resulting in a coupled dataset of internal and external erosion of the pipeline. Through spatiotemporal alignment, the internal media corrosion and external soil erosion are coupled and modeled to accurately capture the synergistic amplification effect of internal and external erosion. The structural data corresponding to the concrete pipeline are imported into the 3D simulation software, and the corresponding pipe wall thickness distribution information, steel reinforcement protective layer thickness, and concrete porosity are set. The concrete part adopts an elastoplastic damage model, the steel reinforcement part adopts a bilinear strengthening model, and the soil seepage simulation adopts the Darcy-Forchheimer model. Multi-time-step transient analysis is performed to record the pipe wall thickness degradation rate, crack propagation path, and steel corrosion threshold time in each time step. With the preset pipeline service life standard as the overall time axis, the simulation data under each time step are integrated to generate concrete pipeline deterioration trend information.

[0104] This solution uses coupled analysis of internal and external erosion and three-dimensional simulation to simultaneously capture the chemical corrosion, mechanical damage, and environmental interactions experienced by concrete pipelines. It accurately reflects the changes in various durability indicators of concrete pipelines under the coupled state of complex influencing factors. Based on the preset pipeline service life standard, it integrates the changes of various durability indicators within its simulation time step to generate concrete pipeline deterioration trend information, so as to accurately reflect the development status of the durability deterioration trend of concrete pipelines.

[0105] In some embodiments, the internal corrosion factor and the external erosion factor are respectively timestamped and calibrated, and the time resolution of the internal corrosion factor and the external erosion factor is unified by an interpolation algorithm; the internal corrosion factor and the external erosion factor are spatially matched based on the pipeline axial coordinate, and the pipeline circumference is divided into multiple fan-shaped regions to address the circumferential non-uniformity of the pipeline, thereby establishing a regional mapping relationship between the internal corrosion factor and the external erosion factor.

[0106] Timestamp calibration can be a process of synchronously correcting the original timestamps of internal corrosion factors and external erosion factors.

[0107] Interpolation algorithms can be mathematical processing methods used to unify data with different sampling frequencies, such as cubic spline interpolation algorithms.

[0108] The time resolution can be the smallest time interval between data from internal corrosion factors and external erosion factors.

[0109] The axial coordinates of a pipeline can be a positioning coordinate system established along the length of the pipeline.

[0110] Circumferential non-uniformity can be the characteristic of different corrosion in different directions around the circumference of a pipeline.

[0111] The region mapping relationship can be the spatial correspondence between the internal corrosion region and the external erosion region.

[0112] Specifically, the DTW algorithm is used to calibrate the internal corrosion factors and external erosion factors with timestamps. Cubic spline interpolation is performed on data with too low time resolution, and downsampling filtering and compression are performed on data with too high time resolution to unify the time resolution of the internal corrosion factors and external erosion factors. Based on the pipeline axial coordinates, the outer surface of the pipeline is divided into several fan-shaped regions with consistent angles according to the geomagnetic orientation. The same number of radial slices are divided inside. The center coordinates of each surface fan-shaped region and the corresponding internal radial slice are correlated and mapped to establish the regional mapping relationship between the internal corrosion factors and the external erosion factors. Through the axial-circular grid mapping mechanism, the positioning accuracy of each region of the concrete pipeline is improved. At the same time, the correlation between the data of the corresponding internal corrosion factors and external erosion factors in each region is established to improve the reliability of the coupling analysis results.

[0113] This scheme eliminates time deviations in internal and external erosion data through high-precision timestamp calibration and interpolation, captures transient coupling effects, improves the positioning accuracy of each region through an axial-circular grid mapping mechanism, and establishes the correlation between the corresponding internal corrosion factors and external erosion factor data of each region, thereby improving the reliability of the coupling analysis results.

[0114] In some embodiments, a temperature gradient compensation coefficient is introduced based on the difference between the average temperature of the medium and the soil temperature gradient, and the coupling weight between the internal corrosion factor and the external erosion factor is dynamically adjusted based on the temperature gradient compensation coefficient.

[0115] The temperature gradient compensation coefficient can be a dynamic adjustment factor used to correct the influence of temperature differences between the inside and outside of concrete pipes on the coupled analysis.

[0116] The coupling weight can be the contribution ratio of internal and external erosion parameters in the three-dimensional finite element simulation.

[0117] Specifically, the temperature difference between the inside and outside of the pipeline will cause the concrete to have a thermal expansion difference, which will affect the degree of influence of the internal corrosion factor and the external erosion factor on the pipeline durability. Based on experimental data, the influence coefficients of the temperature difference between the inside and outside of the pipeline on the internal corrosion state and the external erosion state are established, that is, the temperature gradient compensation coefficients for the internal corrosion factor and the external erosion factor. Based on the temperature gradient compensation coefficients, the contribution weights of the internal corrosion factor and the external erosion factor in the three-dimensional finite element simulation are adjusted respectively.

[0118] This scheme uses a dynamic compensation mechanism to accurately capture the influence of the temperature difference between the medium and the soil temperature gradient on internal and external corrosion factors of concrete pipes based on the difference between the medium's uniform temperature and the soil temperature gradient. This allows for the adjustment of the contribution weights of internal and external corrosion factors in the three-dimensional finite element simulation, thereby improving the accuracy and scientific rigor of the collaborative analysis of internal and external erosion.

[0119] Figure 3 This is a schematic diagram of the structure of an intelligent concrete durability testing system provided in one embodiment of this application, as shown below. Figure 3 As shown, the intelligent concrete durability testing system 300 of this embodiment includes: an influence analysis module 301, a deterioration analysis module 302, and a durability assessment module 303.

[0120] The impact analysis module 301 is used to acquire information on the concrete pipeline treatment medium and the concrete pipeline burial environment, and to construct a two-dimensional pipeline impact model based on the concrete pipeline treatment medium and the concrete pipeline burial environment. The degradation analysis module 302 is used to obtain a set of concrete pipe structural parameters and, based on the set of concrete pipe structural parameters, determine the degradation trend information of the concrete pipe according to the two-dimensional pipe influence model. The durability assessment module 303 is used to assess whether the durability of the current concrete pipeline is qualified in its service environment based on the deterioration trend information of the concrete pipeline, and to determine and output a durability test report.

[0121] Optionally, in the influence analysis module 301, the information on the concrete pipeline treatment medium includes information on changes in the pH value of the liquid medium, the uniform temperature of the medium, changes in the concentration of specified ions, changes in the liquid level of the medium, changes in the flow rate, and changes in the liquid impact force. The information on the processing medium of the concrete pipe is obtained through a micro-sensor array spirally arranged along the pipe axis on the inner wall of the experimental concrete pipe and a piezoelectric thin film sensor pre-embedded inside the experimental concrete pipe.

[0122] Optionally, in the influence analysis module 301, the environmental information for the concrete pipe installation includes soil moisture content, soil redox potential, concentration of microbial metabolites, soil temperature gradient, and soil lateral pressure distribution. The environmental information of the concrete pipe burial site was obtained by using a flexible electrode array arranged circumferentially on the outer surface of the experimental concrete pipe in conjunction with a distributed fiber optic sensor.

[0123] Optionally, the influence analysis module 301 is specifically used for: Based on the information of the concrete pipe processing medium, a multiphysics field coupling analysis is performed on the state of the liquid medium inside the concrete pipe to construct a medium erosion dynamics model. Based on the environmental information of the concrete pipe installation, a time-varying effect analysis of the soil environment outside the concrete pipe is conducted to construct a soil erosion diffusion model. Based on the aforementioned medium erosion kinetics model and the aforementioned soil erosion diffusion model, the two-dimensional pipeline influence model is constructed.

[0124] Optionally, when the influence analysis module 301 performs multiphysics coupling analysis on the liquid medium state inside the concrete pipe based on the concrete pipe treatment medium information and constructs a medium erosion dynamics model, it is specifically used for: Based on the information of the concrete pipe treatment medium, the pH value change information of the liquid medium and the specified ion concentration change information are time-series aligned and correlated to deduce the chemical corrosion effect of the liquid medium inside the concrete pipe on the inner wall of the pipe and construct ion diffusion corrosion effect information. The information on changes in liquid level, flow rate, and liquid impact force is time-aligned. Based on the medium level change information, determine the interface affected by the medium inside the pipeline at different time points; Based on the influence of the internal medium of the pipeline on the interface, the flow velocity change information and the liquid impact force change information are analyzed to deduce the peeling effect of the internal medium of the concrete pipeline on the inner wall of the pipeline and construct the interface peeling effect information. Based on the ion diffusion corrosion effect information and the interface stripping effect information, the medium uniform temperature is introduced as a medium erosion adjustment factor to construct the medium erosion kinetic model.

[0125] Optionally, when the impact analysis module 301 performs time-varying effect analysis on the soil environmental state outside the concrete pipe based on the information about the concrete pipe's installation environment and constructs a soil erosion diffusion model, it is specifically used for: Based on the soil redox potential and the concentration of microbial metabolites, the bioelectrochemical corrosion effect of the external soil on the outer surface of the concrete pipe is deduced, and information on the bioelectrochemical corrosion effect is constructed. Based on the soil moisture content and the soil lateral pressure information, the stress-seepage effect generated by the soil outside the concrete pipe on the outer surface of the pipe is deduced, and the soil stress-seepage coupling effect information is constructed. Based on the soil temperature gradient, the information on bioelectrochemical corrosion effect and the information on soil stress-seepage coupling effect are dynamically corrected to construct the soil erosion diffusion model.

[0126] Optionally, the degradation analysis module 302 is specifically used for: The internal corrosion factor output by the media erosion kinetics model and the external erosion factor output by the soil erosion diffusion model are spatiotemporally aligned to construct a pipeline internal and external erosion coupled dataset. Based on the pipe wall thickness distribution information, the steel reinforcement protective layer thickness and the concrete porosity, a three-dimensional finite element simulation is performed on the pipeline internal and external erosion coupling dataset to simulate the stress-corrosion co-evolution process of pipeline concrete material under different erosion directions and determine the evolution simulation results. Based on the evolution simulation results, the wall thickness degradation rate, crack propagation path, and steel corrosion threshold time are extracted. Combined with the preset pipeline service life standard, the deterioration trend information of the concrete pipeline is generated.

[0127] Optionally, when the degradation analysis module 302 performs spatiotemporal alignment of the internal corrosion factor output by the media erosion kinetics model with the external erosion factor output by the soil erosion diffusion model, it is specifically used for: The internal corrosion factor and the external erosion factor are respectively timestamped and the temporal resolution of the internal corrosion factor and the external erosion factor is unified by an interpolation algorithm; Based on the axial coordinate of the pipeline, the internal corrosion factor and the external erosion factor are spatially matched. Considering the circumferential non-uniformity of the pipeline, the circumference of the pipeline is divided into multiple fan-shaped regions, and a regional mapping relationship between the internal corrosion factor and the external erosion factor is established.

[0128] Optionally, the system further includes a temperature compensation module 304, specifically used for: Based on the difference between the average temperature of the medium and the temperature gradient of the soil, a temperature gradient compensation coefficient is introduced, and based on the temperature gradient compensation coefficient, the coupling weight between the internal corrosion factor and the external erosion factor is dynamically adjusted.

[0129] The system in this embodiment can be used to execute the methods of any of the above embodiments, and its implementation principle and technical effect are similar, so they will not be described again here.

Claims

1. An intelligent method for testing the durability of concrete, characterized in that, include: Obtain information on the treatment medium and the burial environment of the concrete pipeline; and construct a two-dimensional pipeline influence model based on the information on the treatment medium and the burial environment of the concrete pipeline. Obtain a set of concrete pipe structural parameters, and based on the set of concrete pipe structural parameters, determine the deterioration trend information of the concrete pipe according to the two-dimensional pipe influence model; Based on the information on the deterioration trend of the concrete pipeline, assess whether the durability of the current concrete pipeline in its service environment is up to standard, and determine and output a durability test report.

2. The method according to claim 1, characterized in that, The information on the concrete pipeline processing medium includes information on changes in the pH value of the liquid medium, the uniform temperature of the medium, changes in the concentration of specified ions, changes in the liquid level of the medium, changes in the flow rate, and changes in the liquid impact force. The information on the processing medium of the concrete pipe is obtained through a micro-sensor array spirally arranged along the pipe axis on the inner wall of the experimental concrete pipe and a piezoelectric thin film sensor pre-embedded inside the experimental concrete pipe.

3. The method according to claim 2, characterized in that, The environmental information for the concrete pipeline installation includes soil moisture content, soil redox potential, concentration of microbial metabolites, soil temperature gradient, and soil lateral pressure distribution. The environmental information of the concrete pipe burial site was obtained by using a flexible electrode array arranged circumferentially on the outer surface of the experimental concrete pipe in conjunction with a distributed fiber optic sensor.

4. The method according to claim 2, characterized in that, The step of constructing a two-dimensional pipeline influence model based on the concrete pipeline treatment medium information and the concrete pipeline burial environment information includes: Based on the information of the concrete pipe processing medium, a multiphysics field coupling analysis is performed on the state of the liquid medium inside the concrete pipe to construct a medium erosion dynamics model. Based on the environmental information of the concrete pipe installation, a time-varying effect analysis of the soil environment outside the concrete pipe is conducted to construct a soil erosion diffusion model. Based on the aforementioned medium erosion kinetics model and the aforementioned soil erosion diffusion model, the two-dimensional pipeline influence model is constructed.

5. The method according to claim 3, characterized in that, Based on the information about the treatment medium in the concrete pipe, a multiphysics coupling analysis is performed on the state of the liquid medium inside the concrete pipe to construct a medium erosion dynamics model, including: Based on the information of the concrete pipe treatment medium, the pH value change information of the liquid medium and the specified ion concentration change information are time-series aligned and correlated to deduce the chemical corrosion effect of the liquid medium inside the concrete pipe on the inner wall of the pipe and construct ion diffusion corrosion effect information. The information on changes in liquid level, flow rate, and liquid impact force is time-aligned. Based on the medium level change information, determine the interface affected by the medium inside the pipeline at different time points; Based on the influence of the internal medium of the pipeline on the interface, the flow velocity change information and the liquid impact force change information are analyzed to deduce the peeling effect of the internal medium of the concrete pipeline on the inner wall of the pipeline and construct the interface peeling effect information. Based on the ion diffusion corrosion effect information and the interface stripping effect information, the medium uniform temperature is introduced as a medium erosion adjustment factor to construct the medium erosion kinetic model.

6. The method according to claim 5, characterized in that, Based on the environmental information of the concrete pipeline installation, a time-varying effect analysis of the soil environmental state outside the concrete pipeline is performed to construct a soil erosion diffusion model, including: Based on the soil redox potential and the concentration of microbial metabolites, the bioelectrochemical corrosion effect of the soil outside the concrete pipe on the outer surface of the pipe is deduced, and information on the bioelectrochemical corrosion effect is constructed. Based on the soil moisture content and the soil lateral pressure information, the stress-seepage effect generated by the soil outside the concrete pipe on the outer surface of the pipe is deduced, and the soil stress-seepage coupling effect information is constructed. Based on the soil temperature gradient, the information on bioelectrochemical corrosion effect and the information on soil stress-seepage coupling effect are dynamically corrected to construct the soil erosion diffusion model.

7. The method according to claim 6, characterized in that, The concrete pipe structural parameter set includes pipe wall thickness distribution information, steel reinforcement protective layer thickness, and concrete porosity. Based on the concrete pipe structural parameter set, and according to the two-dimensional pipe influence model, the determination of concrete pipe deterioration trend information includes: The internal corrosion factor output by the media erosion kinetics model and the external erosion factor output by the soil erosion diffusion model are spatiotemporally aligned to construct a pipeline internal and external erosion coupled dataset. Based on the pipe wall thickness distribution information, the thickness of the steel reinforcement protective layer and the concrete porosity, a three-dimensional finite element simulation is performed on the pipeline internal and external erosion coupling dataset to simulate the stress-corrosion co-evolution process of pipeline concrete material under different erosion directions and determine the evolution simulation results. Based on the evolution simulation results, the wall thickness degradation rate, crack propagation path, and steel corrosion threshold time are extracted. Combined with the preset pipeline service life standard, the deterioration trend information of the concrete pipeline is generated.

8. The method according to claim 7, characterized in that, The step of spatiotemporally aligning the internal corrosion factor output by the media erosion kinetics model with the external erosion factor output by the soil erosion diffusion model includes: The internal corrosion factor and the external erosion factor are respectively timestamped and the temporal resolution of the internal corrosion factor and the external erosion factor is unified by an interpolation algorithm; Based on the axial coordinate of the pipeline, the internal corrosion factor and the external erosion factor are spatially matched. Considering the circumferential non-uniformity of the pipeline, the circumference of the pipeline is divided into multiple fan-shaped regions, and a regional mapping relationship between the internal corrosion factor and the external erosion factor is established.

9. The method according to claim 8, characterized in that, The method further includes: Based on the difference between the average temperature of the medium and the temperature gradient of the soil, a temperature gradient compensation coefficient is introduced, and based on the temperature gradient compensation coefficient, the coupling weight between the internal corrosion factor and the external erosion factor is dynamically adjusted.

10. An intelligent concrete durability testing system, characterized in that, include: The impact analysis module is used to obtain information on the concrete pipeline treatment medium and the concrete pipeline burial environment, and to construct a two-dimensional pipeline impact model based on the concrete pipeline treatment medium and the concrete pipeline burial environment. The degradation analysis module is used to obtain a set of concrete pipe structural parameters and, based on the set of concrete pipe structural parameters, determine the degradation trend information of the concrete pipe according to the two-dimensional pipe influence model. The durability assessment module is used to assess whether the durability of the current concrete pipeline is qualified in its service environment based on the deterioration trend information of the concrete pipeline, and to determine and output a durability test report.

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