Method, equipment, product and medium for evaluating protective capability of road corrugated beam guardrail

Abstract

The invention discloses a method, equipment, a product and a medium for evaluating the protective capability of a road corrugated beam guardrail, and relates to the technical field of road traffic safety facilities. The method comprises the following steps: acquiring corresponding response characteristics of each region of a target road wave-shaped beam guardrail under an impact response test; collecting the surface temperature of each area under the impact response test in real time; the surface temperature of each area is subjected to differential processing, differential temperature rise diagrams of each area are obtained, and each differential temperature rise diagram comprises a space differential temperature rise diagram corresponding to a front impact absorption area, a time difference temperature rise diagram corresponding to a side wall shear stretching area and a radial differential temperature rise diagram corresponding to a structure connection stress concentration area; extracting the temperature rise characteristics of each region from the differential temperature rise map of each region, and determining the state value of each region based on the response characteristics and the temperature rise characteristics of each region; and according to the state value of each area, determining the protection capability grade of the target road wave-shaped beam guardrail. The method has the effect of improving the accuracy of the evaluation result of the road corrugated beam guardrail.

Description

Technical Field

[0001] This application relates to the field of road traffic safety facilities technology, specifically to a method, equipment, product, and medium for assessing the protective capability of highway corrugated beam guardrails. Background Technology

[0002] With the rapid development of my country's expressway network, the continuous assessment and maintenance of corrugated beam guardrails, as an important road safety facility, are becoming increasingly important. Because guardrails are subject to frequent minor collisions with vehicles and long-term erosion from harsh environments during their service life, their protective capabilities gradually decrease. Therefore, regular assessments are necessary to ensure road safety.

[0003] Currently, the commonly used method for assessing the protective capability of highway corrugated beam guardrails is to monitor the guardrail structure using a sensor network. This method involves deploying strain sensors and displacement sensors at key locations on the guardrail to collect deformation data in real time, and then comparing the collected data with preset standard thresholds to evaluate the protective capability of the highway corrugated beam guardrail.

[0004] However, the above-mentioned assessment method mainly focuses on the macroscopic deformation characteristics of the guardrail. When the surface of the highway corrugated beam guardrail is intact but invisible damage such as microcracks has occurred inside, this method is difficult to detect potential safety hazards in time, resulting in low accuracy of the highway corrugated beam guardrail assessment results. Summary of the Invention

[0005] This application provides a method, equipment, program product, and medium for evaluating the protective capability of highway corrugated beam guardrails, which improves the accuracy of highway corrugated beam guardrail evaluation results.

[0006] The first aspect of this application provides a method for assessing the protective capacity of highway corrugated beam guardrails, specifically including: The response characteristics of each region of the target highway corrugated beam guardrail under impact response test are obtained. The regions include the front impact absorption zone, the side wall shear tension zone, and the structural connection stress concentration zone. Real-time acquisition of the surface temperature of each region under impact response testing; The surface temperature of each region is differentially processed to obtain differential temperature rise maps for each region. Each differential temperature rise map includes a spatial differential temperature rise map corresponding to the front impact absorption region, a time differential temperature rise map corresponding to the sidewall shear tension region, and a radial differential temperature rise map corresponding to the structural connection stress concentration region. The temperature rise characteristics of each region are extracted from the differential temperature rise map of each region, and the state value of each region is determined based on the response characteristics and temperature rise characteristics of each region. The protection capability level of the target highway corrugated beam guardrail is determined based on the state values ​​of each of the aforementioned areas.

[0007] By employing the above technical solution, the response characteristics of each region of the target highway corrugated beam guardrail under impact response testing are obtained, including response characteristic data of the front impact absorption zone, the sidewall shear-tension zone, and the structural connection stress concentration zone, thereby comprehensively monitoring the stress state of key areas of the guardrail. Based on this, the surface temperature of each region is collected in real time under impact response testing. Since temperature changes reflect the stress-strain state of materials, the obtained temperature changes in different regions of the guardrail directly reflect the stress level of the guardrail structure. Furthermore, the surface temperature of each region is differentially processed to obtain the spatial differential temperature rise map corresponding to the front impact absorption zone, the time differential temperature rise map corresponding to the sidewall shear-tension zone, and the radial differential temperature rise map corresponding to the structural connection stress concentration zone. The differential temperature rise map, through differential processing, eliminates the influence of interference factors such as ambient temperature, making the temperature change characteristics of each area of ​​the guardrail clearer. Based on the obtained differential temperature rise map, the temperature rise characteristics of each area are extracted and combined with response characteristics to determine the state value of each area. The combination of temperature rise characteristics and response characteristics improves the comprehensiveness of the state assessment, making the judgment of the working state of each area of ​​the guardrail more accurate. Finally, the protection capability level of the target highway corrugated beam guardrail is determined based on the state values ​​of each area. The state values ​​of each area cover key protection performance indicators such as stress deformation and energy absorption of the guardrail during impact. Through comprehensive analysis and evaluation of these indicators, the actual protection capability level of the guardrail can be accurately reflected, thereby ensuring the accuracy of the protection capability level assessment results.

[0008] Optionally, the differential processing of the surface temperature of each region to obtain a differential temperature rise map of each region specifically includes: The initial surface temperature of each region before the impact response test and the real-time surface temperature during the impact response test are obtained. For the frontal impact absorption zone, the temperature change between the real-time surface temperature and the initial surface temperature is processed using a spatial difference method. For the sidewall shear tension zone, the temperature change between the real-time surface temperature and the initial surface temperature is processed using a time difference method. For the stress concentration area of ​​the structural connection, the temperature change between the real-time surface temperature and the initial surface temperature is processed using a radial differential method. The processing results of spatial difference, temporal difference, and radial difference are normalized respectively to generate differential temperature rise maps for each region.

[0009] By adopting the above technical solution, the initial surface temperature of each area before the impact response test and the real-time surface temperature during the test were first obtained, establishing benchmark comparison data for temperature changes. For the front impact absorption zone, a spatial difference method was used to process the temperature changes between the real-time surface temperature and the initial surface temperature, effectively reflecting the spatial distribution characteristics of the impact load in the front area of ​​the guardrail. For the sidewall shear tension zone, a time difference method was used to process the temperature changes between the real-time surface temperature and the initial surface temperature, accurately capturing the stress change process of the guardrail sidewall area over time. For the stress concentration zone of the structural connection, a radial difference method was used to process the temperature changes between the real-time surface temperature and the initial surface temperature, highlighting the radial transmission law of the stress concentration zone at the connection. By normalizing the processing results of spatial difference, time difference, and radial difference, the numerical scale differences caused by different regions and different difference methods were eliminated, giving the generated differential temperature rise map a unified evaluation standard.

[0010] Optionally, the temperature rise characteristics include temperature gradient change characteristics and temperature distribution uniformity characteristics, the response characteristics include displacement response characteristics and stress response characteristics, and determining the state value of each region based on the response characteristics and temperature rise characteristics of each region specifically includes: The temperature gradient change characteristics are correlated with the displacement response characteristics obtained under the impact response test to obtain the first analysis result; The temperature distribution uniformity characteristics are correlated with the stress response characteristics obtained under the impact response test to obtain the second analysis result. Based on the first analysis result and the second analysis result, the state value of each region is determined.

[0011] By employing the aforementioned technical solutions, temperature gradient change characteristics and temperature distribution uniformity characteristics were extracted as temperature rise characteristics, while displacement response characteristics and stress response characteristics were extracted as response characteristics, thus constructing a multi-dimensional evaluation index system. The first analysis result was obtained by correlating the temperature gradient change characteristics with the displacement response characteristics, revealing the correspondence between the deformation degree of each area of ​​the guardrail and the temperature change gradient. The second analysis result was obtained by correlating the temperature distribution uniformity characteristics with the stress response characteristics, reflecting the mapping relationship between the stress distribution and temperature field uniformity of each area of ​​the guardrail. By combining the first and second analysis results, the state values ​​of each area were determined, achieving a comprehensive evaluation of the working state of each area of ​​the guardrail. This ensures that the state values ​​simultaneously encompass the deformation and stress characteristics of the guardrail structure, providing a more complete evaluation basis for the final protection capability level assessment.

[0012] Optionally, determining the state value of each region based on the first analysis result and the second analysis result specifically includes: For the frontal impact absorption zone, the impact energy absorption response coefficient is calculated based on the first analysis result; the structural deformation compatibility coefficient is calculated based on the second analysis result; and the state value of the frontal impact absorption zone is determined according to the impact energy absorption response coefficient and the structural deformation compatibility coefficient. For the sidewall shear-tension zone, the shear deformation response coefficient is calculated based on the first analysis result; the tensile bearing response coefficient is calculated based on the second analysis result; and the state value of the sidewall shear-tension zone is determined according to the shear deformation response coefficient and the tensile bearing response coefficient. For the stress concentration zone of the structural connection, the dynamic response coefficient of the structural connection is calculated based on the first analysis result; the stress concentration distribution coefficient is calculated based on the second analysis result; and the state value of the stress concentration zone of the structural connection is determined according to the dynamic response coefficient of the structural connection and the stress concentration distribution coefficient.

[0013] By adopting the above technical solutions, for the frontal impact absorption zone, the impact energy absorption response coefficient is calculated based on the first analysis result, and the structural deformation coordination coefficient is calculated based on the second analysis result. The state value is determined by the combination of these two coefficients, realizing a comprehensive evaluation of the energy absorption performance and structural deformation coordination of the frontal area of ​​the guardrail. For the sidewall shear and tension zone, the shear deformation response coefficient is calculated based on the first analysis result, and the tensile bearing capacity response coefficient is calculated based on the second analysis result. The state value is determined by the combination of these two coefficients, reflecting the bearing capacity of the sidewall area of ​​the guardrail under the dual action of shear and tension. For the structural connection stress concentration zone, the structural connection dynamic response coefficient is calculated based on the first analysis result, and the stress concentration distribution coefficient is calculated based on the second analysis result. The state value is determined by the combination of these two coefficients, reflecting the dynamic response characteristics and stress distribution of the guardrail connection parts, thus making the determination of the state value of each area more accurate and reasonable.

[0014] Optionally, the step of calculating the dynamic response coefficient of the structural connection based on the first analysis result and calculating the stress concentration distribution coefficient based on the second analysis result specifically includes: A dynamic response feature matrix is ​​constructed based on the first analysis results; Singular value decomposition is performed on the dynamic response feature matrix, the eigenvector corresponding to the largest singular value is selected, and the dynamic response coefficient of the structural connection is determined based on the eigenvector. Based on the second analysis result, a stress feature matrix is ​​constructed, and principal component analysis is performed on the stress feature matrix to obtain principal components. Based on the principal components, the stress concentration distribution coefficient is determined.

[0015] By adopting the above technical solution, a dynamic response feature matrix is ​​constructed based on the first analysis result, transforming complex dynamic response information into matrix form. Singular value decomposition is performed on the dynamic response feature matrix, and the eigenvector corresponding to the largest singular value is selected to extract the most representative dynamic response features. The dynamic response coefficient of the structural connection is determined through the eigenvector, achieving accurate quantification of the dynamic response characteristics of the connection. Simultaneously, a stress feature matrix is ​​constructed based on the second analysis result. Principal component analysis is used to reduce the dimensionality of the stress feature matrix, obtaining the most important stress distribution features. The stress concentration distribution coefficient is determined based on the principal components, achieving effective characterization of the stress distribution state of the connection. This makes the calculation of the stress concentration zone state value of the structural connection more scientific and accurate, improving the reliability of the performance evaluation of the guardrail connection.

[0016] Optionally, determining the state value of the stress concentration zone of the structural connection based on the dynamic response coefficient of the structural connection and the stress concentration distribution coefficient specifically includes: The dynamic stability coefficient is determined based on the ratio of the dynamic response coefficient of the structural connection to a preset first reference value; the distribution uniformity coefficient is determined based on the ratio of the stress concentration distribution coefficient to a preset second reference value. When the dynamic stability coefficient is greater than the first threshold and the distribution uniformity coefficient is greater than the second threshold, the dynamic stability coefficient and the distribution uniformity coefficient are weighted and summed to obtain the state value of the stress concentration zone of the structural connection. When the dynamic stability coefficient is greater than the first threshold and the distribution uniformity coefficient is not greater than the second threshold, the state value of the structural connection stress concentration zone is determined based on the difference between the distribution uniformity coefficient and the second threshold and the preset first basic state value. When the dynamic stability coefficient is not greater than the first threshold and the distribution uniformity coefficient is greater than the second threshold, the state value of the stress concentration zone of the structural connection is determined based on the difference between the dynamic stability coefficient and the first threshold and the preset second basic state value. When the dynamic stability coefficient is not greater than the first threshold and the distribution uniformity coefficient is not greater than the second threshold, the state value of the stress concentration zone of the structural connection is determined based on the first basic state value and the second basic state value.

[0017] By adopting the above technical solution, the ratio of the dynamic response coefficient of the structural connection to the first benchmark value is determined as the dynamic stability coefficient, and the ratio of the stress concentration distribution coefficient to the second benchmark value is determined as the distribution uniformity coefficient, thus establishing a standardized metric for the evaluation index. When both the dynamic stability coefficient and the distribution uniformity coefficient exceed the corresponding threshold, a weighted summation method is used to calculate the state value, reflecting the optimal state in which the guardrail connection meets the requirements in terms of both dynamic stability and stress distribution uniformity. When the dynamic stability coefficient exceeds the threshold but the distribution uniformity coefficient does not meet the standard, the state value is determined based on the difference between the distribution uniformity coefficient and the threshold and the first basic state value, reflecting the degree of influence of uneven stress distribution on the performance of the guardrail connection. When the distribution uniformity coefficient exceeds the threshold but the dynamic stability coefficient does not meet the standard, the state value is determined based on the difference between the dynamic stability coefficient and the threshold and the second basic state value, reflecting the weakening effect of unstable dynamic response on the performance of the guardrail connection. When neither coefficient reaches the threshold requirement, the state value is determined based on the two basic state values, reflecting the performance state of the guardrail connection under conditions where both dynamic stability and stress distribution uniformity are not ideal, thereby achieving a comprehensive and accurate assessment of the state of the stress concentration area of ​​the structural connection.

[0018] Optionally, determining the protection capability level of the target highway corrugated beam guardrail based on the state values ​​of each of the aforementioned areas specifically includes: The energy absorption performance level under impact response test is evaluated based on the state value of the frontal impact absorption zone. Based on the state values ​​of the shear-tension zone of the sidewall, assess the degree of deformation under the impact response test; Based on the state values ​​of the stress concentration zone in the structural connection, the connection stability level under the impact response test is evaluated. Based on the combined energy absorption performance level, deformation degree level, and connection stability level, the protection capability level of the target highway corrugated beam guardrail is determined.

[0019] By adopting the above technical solutions, the energy absorption performance level is evaluated based on the state value of the frontal impact absorption zone, reflecting the guardrail's ability to absorb and dissipate kinetic energy during impact; the deformation degree level is evaluated based on the state value of the sidewall shear tension zone, reflecting the guardrail's ability to control structural deformation under impact loads; and the connection stability level is evaluated based on the state value of the stress concentration zone of the structural connection, characterizing the structural integrity of each connection part of the guardrail under dynamic impact. By comprehensively considering the energy absorption performance level, deformation degree level, and connection stability level, a multi-dimensional evaluation of the guardrail's protective capability is achieved. This ensures that the final determined protective capability level fully reflects the guardrail's comprehensive protective performance in terms of energy absorption, deformation control, and structural stability, guaranteeing the comprehensiveness and reliability of the protective capability level assessment results.

[0020] A second aspect of this application provides an electronic device for assessing the protective capability of a highway corrugated beam guardrail. The electronic device includes one or more processors and a memory. The memory is coupled to the one or more processors and is used to store computer program code, which includes computer instructions. The one or more processors invoke the computer instructions to cause the electronic device for assessing the protective capability of the highway corrugated beam guardrail to perform the method described in the first aspect and any possible implementation thereof.

[0021] A third aspect of this application provides a computer program product containing instructions that, when run on an electronic device for assessing the protective capability of a highway corrugated beam guardrail, causes the electronic device to perform the method described in the first aspect and any possible implementation thereof.

[0022] A fourth aspect of this application provides a computer-readable storage medium including instructions that, when executed on an electronic device for assessing the protective capability of a highway corrugated beam guardrail, cause the electronic device to perform the method described in the first aspect and any possible implementation thereof. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the architecture of a highway corrugated beam guardrail protection capability assessment system provided in an embodiment of this application; Figure 2 This is a flowchart illustrating a method for evaluating the protective capability of a highway corrugated beam guardrail, as provided in an embodiment of this application. Figure 3 This is a schematic diagram illustrating the construction of a dynamic response feature matrix provided in an embodiment of this application; Figure 4 This is a schematic diagram of stress feature matrix construction provided in an embodiment of this application; Figure 5 This is an exemplary hardware structure diagram of an electronic device for assessing the protective capability of a highway corrugated beam guardrail, provided in an embodiment of this application. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0025] In the description of the embodiments of this application, the words "for example" or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design that is described as "for example" or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design options. Rather, the use of the words "for example" or "for instance" is intended to present the relevant concepts in a specific manner.

[0026] In the description of the embodiments of this application, the term "multiple" means two or more. For example, multiple systems means two or more systems, and multiple screen terminals means two or more screen terminals. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "comprising," "including," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0027] Figure 1 An exemplary system architecture for evaluating the protective capability of highway corrugated beam guardrails is shown.

[0028] like Figure 1 As shown, the system architecture includes electronic device 11, network 12, and shock response testing device 13. Network 12 serves as the medium providing a communication link between electronic device 11 and shock response testing device 13. Network 12 includes wired communication links, wireless communication links, and fiber optic cables.

[0029] The operator uses electronic device 11 to interact with the shock response testing device 13 via network 12 to acquire and transmit data. Electronic device 11 is equipped with temperature data analysis applications, displacement data analysis applications, and protection capability assessment applications.

[0030] Electronic device 11 is a hardware device, including a data processing terminal, a portable computer, and an industrial control computer.

[0031] The impact response testing device 13, as a testing equipment group, includes a temperature sensor, a displacement sensor, a stress sensor, and a data acquisition unit. The temperature sensor collects surface temperature data of the guardrail, the displacement sensor collects displacement change data of the guardrail, the stress sensor collects stress distribution data of the guardrail, and the data acquisition unit transmits the collected data to the electronic device 11 for processing and analysis.

[0032] The following detailed explanation uses the electronic device side as an example.

[0033] This embodiment provides a method for evaluating the protective capability of highway corrugated beam guardrails. Figure 2This is a flowchart illustrating a method for assessing the protective capacity of highway corrugated beam guardrails provided in an embodiment of this application. Figure 2 As shown, the method includes steps S101 to S105: S101: Obtain the response characteristics of each region of the target highway corrugated beam guardrail under impact response test. The regions include the front impact absorption zone, the side wall shear tension zone, and the structural connection stress concentration zone.

[0034] In this embodiment, impact response testing refers to a test method or process that applies a preset, controllable impact load to a highway corrugated beam guardrail and collects various physical response data during the process, to simulate the impact condition of the highway corrugated beam guardrail under actual road conditions. The "region" refers to different functional sections of the highway corrugated beam guardrail divided according to its stress form and functional characteristics, including the front impact absorption zone, the side wall shear-tension zone, and the structural connection stress concentration zone. Specifically, the front impact absorption zone is the area where the front of the highway corrugated beam guardrail directly bears the impact force; the side wall shear-tension zone is the connection area on both sides of the highway corrugated beam guardrail; and the structural connection stress concentration zone is the area where the highway corrugated beam guardrail is fixedly connected to the ground.

[0035] Specifically, the electronic device first determines the regional division of the target highway corrugated beam guardrail, dividing it longitudinally into a frontal impact absorption zone, a sidewall shear-tensile zone, and a structural connection stress concentration zone. The frontal impact absorption zone is located at the center of the front of the corrugated beam guardrail, the sidewall shear-tensile zone is located at the two side edges of the corrugated beam guardrail, and the structural connection stress concentration zone is located at the bottom of the corrugated beam guardrail where it connects to the ground. Then, the impact response testing device is activated to apply a preset impact force to the target highway corrugated beam guardrail. The impact response testing device collects stress distribution data and displacement change data in the frontal impact absorption zone, tensile strength data and shear force data in the sidewall shear-tensile zone, and fixed strength data and force distribution data in the structural connection stress concentration zone through sensors. The electronic device stores all the collected data as response characteristics in its memory.

[0036] S102: Real-time acquisition of surface temperature in each region under impact response test.

[0037] Specifically, the electronic device controls the impact response testing device to arrange a first temperature sensor array in the front impact absorption zone of the corrugated beam guardrail, a second temperature sensor array in the side wall shear and tension zone, and a third temperature sensor array in the structural connection stress concentration zone. The impact response testing device applies a preset impact force to the target highway corrugated beam guardrail. The first temperature sensor array collects surface temperature data of the front impact absorption zone, the second temperature sensor array collects surface temperature data of the side wall shear and tension zone, and the third temperature sensor array collects surface temperature data of the structural connection stress concentration zone. The three temperature sensor arrays continuously collect temperature data at preset time intervals, and the electronic device stores the collected temperature data in its memory.

[0038] For example, the impact response testing device arranges 16 temperature sensors in the front impact absorption zone of the corrugated beam guardrail to form a first temperature sensor array, 8 temperature sensors in the side wall shear tension zone to form a second temperature sensor array, and 4 temperature sensors in the structural connection stress concentration zone to form a third temperature sensor array. The impact response testing device applies a 500 joule impact force to the target highway corrugated beam guardrail. The first temperature sensor array collects surface temperature data of the front impact absorption zone every 10 milliseconds, ranging from 25 degrees Celsius to 35 degrees Celsius. The second temperature sensor array collects surface temperature data of the side wall shear tension zone every 10 milliseconds, ranging from 23 degrees Celsius to 28 degrees Celsius. The third temperature sensor array collects surface temperature data of the structural connection stress concentration zone every 10 milliseconds, ranging from 22 degrees Celsius to 26 degrees Celsius.

[0039] S103: Perform differential processing on the surface temperature of each region to obtain differential temperature rise maps for each region. Each differential temperature rise map includes a spatial differential temperature rise map corresponding to the front impact absorption region, a time differential temperature rise map corresponding to the sidewall shear tension region, and a radial differential temperature rise map corresponding to the structural connection stress concentration region.

[0040] In this embodiment, the differential temperature rise map refers to image data representing the temperature change pattern obtained through differential processing, including spatial differential temperature rise map, temporal differential temperature rise map, and radial differential temperature rise map. Specifically, the spatial differential temperature rise map shows the distribution of temperature changes at different locations in the frontal impact absorption zone; the temporal differential temperature rise map shows the trend of temperature change over time in the sidewall shear tensile zone; and the radial differential temperature rise map shows the distribution of temperature changes along the radial direction in the stress concentration zone of the structural connection.

[0041] Specifically, the electronic device reads the surface temperature data of the front impact absorption zone from the memory, performs spatial differential processing by calculating the temperature data difference between adjacent locations, and generates a spatial differential temperature rise map of the front impact absorption zone. It also reads the surface temperature data of the sidewall shear tensile zone from the memory, performs temporal differential processing by calculating the temperature data difference between adjacent time points, and generates a temporal differential temperature rise map of the sidewall shear tensile zone. Finally, it reads the surface temperature data of the structural connection stress concentration zone from the memory, performs radial differential processing by calculating the temperature data difference between adjacent locations along the radial direction, and generates a radial differential temperature rise map of the structural connection stress concentration zone.

[0042] Based on the above embodiments, as an optional embodiment, the step of differentially processing the surface temperature of each region to obtain a differential temperature rise map of each region may include steps S201 to S205: S201: Obtain the initial surface temperature of each region before the impact response test, and the real-time surface temperature during the impact response test.

[0043] Specifically, before starting the impact response test, the electronic device controls the impact response testing device to activate the first temperature sensor array to collect the initial surface temperature data of the front impact absorption zone, activate the second temperature sensor array to collect the initial surface temperature data of the sidewall shear tensile zone, and activate the third temperature sensor array to collect the initial surface temperature data of the structural connection stress concentration zone. The electronic device stores the collected initial surface temperature data in the memory as the temperature change reference value. The impact response testing device begins to apply a preset impact force to the target highway corrugated beam guardrail. The first temperature sensor array collects real-time surface temperature data of the front impact absorption zone, the second temperature sensor array collects real-time surface temperature data of the sidewall shear tensile zone, and the third temperature sensor array collects real-time surface temperature data of the structural connection stress concentration zone. The three temperature sensor arrays continuously collect temperature data at preset time intervals.

[0044] S202: For the frontal impact absorption zone, a spatial difference method is used to process the temperature change between the real-time surface temperature and the initial surface temperature.

[0045] In this embodiment, the spatial difference method refers to the method of analyzing and processing the temperature difference at different spatial locations in the frontal impact absorption zone, which is used to reflect the spatial distribution pattern of the temperature in the frontal impact absorption zone.

[0046] Specifically, the electronic device reads the initial and real-time surface temperature data collected by the first temperature sensor array in the frontal impact absorption zone from the memory. It calculates the temperature change between the real-time and initial surface temperatures at each sensor location, divides the frontal impact absorption zone into multiple grid cells, and calculates the difference in temperature change between adjacent grid cells as a spatial difference value. The electronic device stores the calculated spatial difference value in the memory to generate a spatial difference temperature rise map of the frontal impact absorption zone. The spatial difference method is used because it can effectively highlight the energy distribution gradient and spatial range formed by the impact load on the front of the guardrail, and can intuitively reflect the absorption and diffusion of impact energy on a plane, making it particularly suitable for analyzing the effects of frontal impacts.

[0047] For example, the electronic device reads the initial surface temperature data of 25 degrees Celsius and the real-time surface temperature data of 35 degrees Celsius from the memory of 16 temperature sensors in the first temperature sensor array. It calculates the temperature change at each sensor location as 10 degrees Celsius, divides the front impact absorption zone into 4x4 grid cells, calculates the difference in temperature change between adjacent grid cells to obtain a spatial difference value, and stores the calculated spatial difference value in the memory to generate a spatial difference temperature rise map of the front impact absorption zone.

[0048] S203: For the sidewall shear tension zone, the temperature change between the real-time surface temperature and the initial surface temperature is processed using a time difference method.

[0049] In this embodiment, the time difference method refers to the method of analyzing and processing the temperature difference of the sidewall shear tension zone at different time points by calculating the temperature difference, which is used to reflect the temperature change law of the sidewall shear tension zone over time.

[0050] Specifically, the electronic device reads the initial and real-time surface temperature data collected by the second temperature sensor array in the shear-tensile zone of the sidewall from the memory. It calculates the temperature change between the real-time and initial surface temperatures at each sensor location, divides the impact response test time into multiple time periods, and calculates the difference in temperature change between adjacent time periods as the time difference value. The electronic device stores the calculated time difference value in the memory to generate a time-difference temperature rise map of the shear-tensile zone of the sidewall. The time-difference method is used because the sidewall of the guardrail mainly bears shear and tension forces during impact, and its damage is a dynamic process that develops over time. Time difference can effectively capture the rate of temperature change over time, thereby revealing the time evolution characteristics of the material from elastic deformation to plastic yielding and even fracture.

[0051] For example, the electronic device reads the initial surface temperature data of 23 degrees Celsius collected by the eight temperature sensors in the second temperature sensor array from the memory. The impact response test time is divided into multiple time periods according to the real-time surface temperature data collected every 10 milliseconds. The time difference value is calculated by the difference in temperature change between adjacent time periods. The electronic device stores the calculated time difference value in the memory to generate the time difference temperature rise map of the sidewall shear tension zone.

[0052] S204: For stress concentration areas in structural connections, a radial differential method is used to handle the temperature changes between the real-time surface temperature and the initial surface temperature.

[0053] In this embodiment, the radial difference method refers to the method of analyzing and processing the temperature difference along the radial direction of the stress concentration area of ​​the structural connection, which is used to reflect the variation law of the temperature distribution of the stress concentration area of ​​the structural connection from the center to the outside along the radial direction.

[0054] Specifically, the electronic device reads the initial and real-time surface temperature data collected by the third temperature sensor array in the stress concentration zone of the structural connection from the memory. It calculates the temperature change between the real-time and initial surface temperatures at each sensor location, divides the stress concentration zone into multiple concentric annular regions, and calculates the difference in temperature change between adjacent annular regions as the radial difference value. The electronic device stores the calculated radial difference value in the memory to generate a radial differential temperature rise map of the stress concentration zone. The radial difference method is used because structural connection areas (such as bolted joints) are typical stress concentration points. Under impact, stress diffuses radially outward from this point. Radial difference can accurately characterize the temperature gradient along this diffusion path, thus effectively representing the degree and range of stress concentration.

[0055] For example, the electronic device reads the initial surface temperature data of 22 degrees Celsius collected by the four temperature sensors in the third temperature sensor array from the memory. The real-time surface temperature data gradually changes along the radial direction, dividing the stress concentration area of ​​the structural connection into multiple concentric ring regions. The difference in temperature change between adjacent ring regions is calculated to obtain the radial difference value. The electronic device stores the calculated radial difference value in the memory to generate the radial difference temperature rise map of the stress concentration area of ​​the structural connection.

[0056] S205: Normalize the processing results of spatial difference, temporal difference and radial difference respectively to generate differential temperature rise maps for each region.

[0057] Specifically, the electronic device reads the spatial difference value of the front impact absorption zone from the memory, divides the spatial difference value by the maximum spatial difference value of the front impact absorption zone to obtain a normalized spatial difference value, and generates a spatial difference temperature rise map of the front impact absorption zone. It also reads the time difference value of the sidewall shear tension zone from the memory, divides the time difference value by the maximum time difference value of the sidewall shear tension zone to obtain a normalized time difference value, and generates a time difference temperature rise map of the sidewall shear tension zone. Finally, it reads the radial difference value of the structural connection stress concentration zone from the memory, divides the radial difference value by the maximum radial difference value of the structural connection stress concentration zone to obtain a normalized radial difference value, and generates a radial difference temperature rise map of the structural connection stress concentration zone.

[0058] For example, the electronic device reads the spatial difference value of the temperature change of adjacent grid cells in the front impact absorption zone from the memory, divides the spatial difference value by the maximum spatial difference value to obtain the normalized spatial difference value, and generates a spatial difference temperature rise map representing the spatial distribution of temperature in the front region. It also reads the time difference value of the temperature change of adjacent time periods in the sidewall shear tension zone from the memory, divides the time difference value by the maximum time difference value to obtain the normalized time difference value, and generates a time difference temperature rise map representing the time change of temperature in the sidewall region. Furthermore, it reads the radial difference value of the temperature change of adjacent annular regions in the structural connection stress concentration zone from the memory, divides the radial difference value by the maximum radial difference value to obtain the normalized radial difference value, and generates a radial difference temperature rise map representing the radial distribution of temperature in the connection region.

[0059] S104: Extract the temperature rise characteristics of each region from the differential temperature rise map of each region, and determine the state value of each region based on the response characteristics and temperature rise characteristics of each region.

[0060] In this embodiment, the temperature rise characteristic refers to the temperature change characteristic parameters extracted from the differential temperature rise map, including temperature gradient change characteristics and temperature distribution uniformity characteristics. Specifically, the temperature gradient change characteristic is a characteristic parameter characterizing the spatial rate of temperature change, used to reflect the spatial trend of temperature change; the temperature distribution uniformity characteristic is a characteristic parameter characterizing the degree of concentration of temperature spatial distribution, used to reflect the discreteness of temperature distribution.

[0061] Response characteristics refer to the displacement response characteristics and stress response characteristics obtained under impact response testing. Displacement response characteristics are feature parameters characterizing the degree of structural deformation, used to reflect displacement changes during the impact response process; stress response characteristics are feature parameters characterizing the stress state of the structure, used to reflect stress distribution during the impact response process.

[0062] Specifically, the electronic device reads the spatial differential temperature rise map of the front impact absorption zone from the memory, extracts the temperature gradient change characteristics and temperature distribution uniformity characteristics of the front impact absorption zone, reads the displacement response characteristics and stress response characteristics of the front impact absorption zone, performs correlation analysis between the temperature gradient change characteristics and the displacement response characteristics to obtain the first analysis result, and performs correlation analysis between the temperature distribution uniformity characteristics and the stress response characteristics to obtain the second analysis result. The electronic device calculates the impact energy absorption response coefficient based on the first analysis result and calculates the structural deformation compatibility coefficient based on the second analysis result. The impact energy absorption response coefficient and the structural deformation compatibility coefficient are weighted and calculated to obtain the state value of the front impact absorption zone. The electronic device uses the same processing method to calculate the state value of the sidewall shear tension zone and the state value of the structural connection stress concentration zone.

[0063] Based on the above embodiments, as an optional embodiment, the step of determining the state value of each region based on the response characteristics and temperature rise characteristics of each region may include steps S301 to S303: S301: Correlation analysis is performed between the temperature gradient change characteristics and the displacement response characteristics obtained under the impact response test to obtain the first analysis result.

[0064] In this embodiment of the application, the first analysis result refers to the main data obtained by performing eigenvalue decomposition on the correlation matrix, which is used to quantify the degree of coupling between temperature gradient change and displacement response.

[0065] Specifically, the electronic device reads the temperature gradient change characteristics of each region from the memory, extracts the temperature change rate and temperature change direction as temperature gradient change feature vectors, reads the displacement response characteristics of each region under the impact response test, extracts the displacement amount and displacement direction as displacement response feature vectors, calculates the correlation coefficient between the temperature gradient change feature vector and the displacement response feature vector as the correlation degree, constructs the correlation matrix between the temperature gradient change characteristics and the displacement response characteristics, and performs feature decomposition on the correlation matrix to obtain the first analysis result.

[0066] The first analysis result may include one or more eigenvalues. In a preferred embodiment, the first analysis result is the largest eigenvalue (i.e., the principal eigenvalue) of the correlation matrix. The magnitude of this principal eigenvalue directly reflects the strength of the linear correlation between the two multidimensional variable sets, temperature gradient and displacement response. The larger the principal eigenvalue, the stronger the correlation between the two, that is, the better the macroscopic deformation behavior (displacement) of the guardrail matches the thermal effect (temperature gradient) generated by its internal energy dissipation.

[0067] In other embodiments, the first analysis result may also be an eigenvector corresponding to the principal eigenvalue, which describes the main direction of the coupling relationship; or it may be a set of the top N largest eigenvalues ​​or a weighted sum thereof, to more comprehensively capture the main correlation information. Subsequent steps will calculate higher-level performance coefficients based on this first analysis result (e.g., the principal eigenvalue).

[0068] For example, the electronic device reads the temperature gradient change characteristics of the front impact absorption zone from the memory, extracts the rate of change and direction of temperature change in the spatial coordinate axis directions to form a temperature gradient change feature vector, reads the displacement response characteristics of the front impact absorption zone, extracts the displacement amount and direction in the three spatial coordinate axis directions to form a displacement response feature vector, calculates the correlation coefficient between the temperature gradient change feature vector and the displacement response feature vector as the correlation degree, constructs the correlation matrix between the temperature gradient change characteristics and the displacement response characteristics, and performs feature decomposition on the correlation matrix to obtain the first analysis result. The electronic device uses the same processing method to calculate the first analysis results of the sidewall shear tension zone and the structural connection stress concentration zone respectively.

[0069] S302: Correlation analysis is performed between the temperature distribution uniformity characteristics and the stress response characteristics obtained under the impact response test to obtain the second analysis result.

[0070] In this embodiment of the application, the second analysis result refers to the main data obtained by performing eigenvalue decomposition on the correlation matrix, which is used to quantitatively characterize the coordination between temperature distribution uniformity and stress response distribution.

[0071] Specifically, the electronic device reads the temperature distribution uniformity characteristics of each region from the memory, extracts the temperature distribution variance and temperature distribution skewness as temperature distribution uniformity feature vectors, reads the stress response characteristics of each region under the impact response test, extracts the stress distribution variance and stress distribution skewness as stress response feature vectors, calculates the correlation coefficient between the temperature distribution uniformity feature vector and the stress response feature vector as the correlation degree, constructs the correlation matrix between the temperature distribution uniformity characteristics and the stress response characteristics, and performs feature decomposition on the correlation matrix to obtain the second analysis result.

[0072] The second analysis result may include one or more eigenvalues. In a preferred embodiment, the second analysis result is the largest eigenvalue (i.e., the principal eigenvalue) of the correlation matrix. The magnitude of this principal eigenvalue directly reflects the strength of the linear correlation between the uniformity of temperature distribution and the uniformity of stress distribution. The larger the principal eigenvalue, the stronger the correlation between the two, meaning that the stress distribution state (stress uniformity) of the guardrail can be well reflected by the distribution state of its surface temperature field (temperature uniformity). This usually implies that the distribution of energy dissipation or material damage has good consistency with the stress distribution.

[0073] In other embodiments, the second analysis result may also be an eigenvector corresponding to the principal eigenvalue, or a set of the top N largest eigenvalues ​​or their weighted sum. Subsequent steps will calculate higher-level performance coefficients based on this second analysis result (e.g., the principal eigenvalue).

[0074] For example, the electronic device reads the temperature distribution uniformity characteristics of the front impact absorption zone from the memory, extracts the dispersion and deviation of the temperature data to form a temperature distribution uniformity feature vector, reads the stress response characteristics of the front impact absorption zone, extracts the dispersion and deviation of the stress data to form a stress response feature vector, calculates the correlation coefficient between the temperature distribution uniformity feature vector and the stress response feature vector as the correlation degree, constructs the correlation matrix between the temperature distribution uniformity characteristics and the stress response characteristics, and performs feature decomposition on the correlation matrix to obtain the second analysis result. The electronic device uses the same processing method to calculate the second analysis results of the sidewall shear tension zone and the structural connection stress concentration zone respectively.

[0075] S303: Determine the state value of each region based on the results of the first and second analyses.

[0076] In the embodiments of this application, the first analysis result refers to the feature value obtained by the correlation analysis of temperature gradient change characteristics and displacement response characteristics, which is used to characterize the degree of matching between structural deformation and temperature change; the second analysis result refers to the feature value obtained by the correlation analysis of temperature distribution uniformity characteristics and stress response characteristics, which is used to characterize the degree of coordination between structural stress and temperature distribution; the state value refers to the numerical index that characterizes the working state of the region by comprehensively calculating the two analysis results.

[0077] Specifically, the electronic device reads the first analysis result of the frontal impact absorption zone from the memory, calculates the impact energy absorption response coefficient, reads the second analysis result, calculates the structural deformation compatibility coefficient, and weights the impact energy absorption response coefficient and the structural deformation compatibility coefficient to obtain the state value of the frontal impact absorption zone. The electronic device reads the first analysis result of the sidewall shear tension zone, calculates the shear deformation response coefficient, reads the second analysis result, calculates the tensile bearing response coefficient, and weights the shear deformation response coefficient and the tensile bearing response coefficient to obtain the state value of the sidewall shear tension zone. The electronic device reads the first analysis result of the structural connection stress concentration zone, calculates the structural connection dynamic response coefficient, reads the second analysis result, calculates the stress concentration distribution coefficient, and weights the structural connection dynamic response coefficient and the stress concentration distribution coefficient to obtain the state value of the structural connection stress concentration zone.

[0078] For example, the electronic device reads the first analysis result characteristic value of the front impact absorption zone from the memory, calculates the impact energy absorption response coefficient characterizing the energy absorption performance, reads the second analysis result characteristic value, calculates the structural deformation compatibility coefficient characterizing the deformation compatibility, and calculates the front impact absorption zone state value by weighting the impact energy absorption response coefficient and the structural deformation compatibility coefficient. The electronic device uses the same processing method to calculate the state value of the sidewall shear tension zone and the state value of the structural connection stress concentration zone, and stores the calculated state values ​​of each region in the memory.

[0079] Based on the above embodiments, as an optional embodiment, the step of determining the state value of each region according to the first analysis result and the second analysis result may include steps S401 to S403: S401: For the frontal impact absorption zone, calculate the impact energy absorption response coefficient based on the first analysis result; calculate the structural deformation compatibility coefficient based on the second analysis result; determine the state value of the frontal impact absorption zone based on the impact energy absorption response coefficient and the structural deformation compatibility coefficient.

[0080] In the embodiments of this application, the impact energy absorption response coefficient refers to the coefficient characterizing the ability of the front impact absorption zone to absorb impact energy, and is used to reflect the energy absorption performance of the structure; the structural deformation compatibility coefficient refers to the coefficient characterizing the deformation compatibility of the front impact absorption zone, and is used to reflect the uniformity of structural deformation.

[0081] Specifically, the electronic device reads the first analysis result of the frontal impact absorption zone from the memory, extracts the relevant feature values ​​of temperature gradient change characteristics and displacement response characteristics, calculates the ratio of the feature values ​​to the corresponding preset standard feature values, and takes the minimum value as the impact energy absorption response coefficient. It then reads the second analysis result, extracts the relevant feature values ​​of temperature distribution uniformity characteristics and stress response characteristics, calculates the ratio of the feature values ​​to the corresponding preset standard feature values, and takes the minimum value as the structural deformation compatibility coefficient. The electronic device then calculates the state value of the frontal impact absorption zone by weighting the impact energy absorption response coefficient and the structural deformation compatibility coefficient.

[0082] For example, the electronic device reads the first analysis result characteristic value of the frontal impact absorption zone from the memory, compares the characteristic value with the standard characteristic value to calculate the impact energy absorption response coefficient characterizing the energy absorption performance, reads the second analysis result characteristic value, compares the characteristic value with the standard characteristic value to calculate the structural deformation coordination coefficient characterizing the deformation coordination, sets the weight of the impact energy absorption response coefficient to 0.6 and the weight of the structural deformation coordination coefficient to 0.4, and calculates the frontal impact absorption zone state value by weighting the impact energy absorption response coefficient and the structural deformation coordination coefficient according to the weights. The electronic device stores the calculated state value in the memory.

[0083] S402: For the shear-tension zone of the sidewall, calculate the shear deformation response coefficient based on the first analysis result; calculate the tensile bearing response coefficient based on the second analysis result; determine the state value of the shear-tension zone of the sidewall according to the shear deformation response coefficient and the tensile bearing response coefficient.

[0084] In the embodiments of this application, the shear deformation response coefficient refers to a coefficient characterizing the shear deformation capacity of the shear tension zone of the sidewall, and is used to reflect the shear performance of the structure; the tensile bearing capacity response coefficient refers to a coefficient characterizing the tensile bearing capacity of the shear tension zone of the sidewall, and is used to reflect the tensile performance of the structure.

[0085] Specifically, the electronic device reads the first analysis result of the sidewall shear-tension zone from the memory, extracts the relevant feature values ​​of temperature gradient change characteristics and displacement response characteristics, compares the relevant feature values ​​with preset standard feature values ​​to calculate the shear deformation response coefficient, reads the second analysis result, extracts the relevant feature values ​​of temperature distribution uniformity characteristics and stress response characteristics, compares the relevant feature values ​​with preset standard feature values ​​to calculate the tensile bearing response coefficient, and the electronic device calculates the weighted average of the shear deformation response coefficient and the tensile bearing response coefficient to obtain the state value of the sidewall shear-tension zone.

[0086] For example, the electronic device reads the first analysis result feature value of the sidewall shear-tensile zone from the memory, compares the feature value with the standard feature value to calculate the shear deformation response coefficient characterizing the shear performance, reads the second analysis result feature value, compares the feature value with the standard feature value to calculate the tensile bearing response coefficient characterizing the tensile performance, sets the weight of the shear deformation response coefficient to 0.5, sets the weight of the tensile bearing response coefficient to 0.5, and calculates the state value of the sidewall shear-tensile zone by weighting the shear deformation response coefficient and the tensile bearing response coefficient according to the weight. The electronic device stores the calculated state value in the memory.

[0087] S403: For the stress concentration zone of the structural connection, calculate the dynamic response coefficient of the structural connection based on the first analysis result; calculate the stress concentration distribution coefficient based on the second analysis result; determine the state value of the stress concentration zone of the structural connection according to the dynamic response coefficient of the structural connection and the stress concentration distribution coefficient.

[0088] In the embodiments of this application, the dynamic response coefficient of the structural connection refers to the coefficient characterizing the dynamic stability of the stress concentration area of ​​the structural connection and is used to reflect the performance of the structural connection; the stress concentration distribution coefficient refers to the coefficient characterizing the stress distribution in the stress concentration area of ​​the structural connection and is used to reflect the degree of stress concentration.

[0089] Specifically, the electronic device reads the first analysis result of the stress concentration zone of the structural connection from the memory, constructs a dynamic response feature matrix, performs singular value decomposition on the dynamic response feature matrix, calculates the dynamic response coefficient of the structural connection based on the modulus of the eigenvector corresponding to the maximum singular value, reads the second analysis result, constructs a stress feature matrix, performs principal component analysis on the stress feature matrix, extracts the principal components and calculates the stress concentration distribution coefficient, calculates the dynamic stability coefficient by comparing the dynamic response coefficient of the structural connection with a preset first reference value, calculates the distribution uniformity coefficient by comparing the stress concentration distribution coefficient with a preset second reference value, and calculates the state value of the stress concentration zone of the structural connection based on the dynamic stability coefficient and the distribution uniformity coefficient.

[0090] For example, the electronic device reads the first analysis result of the stress concentration zone of the structural connection from the memory, constructs a dynamic response feature matrix, calculates the modulus of the feature vector to obtain the dynamic response coefficient of the structural connection that characterizes the connection stability, reads the second analysis result, constructs a stress feature matrix, extracts principal components through principal component analysis to calculate the stress concentration distribution coefficient that characterizes the stress distribution, calculates the dynamic stability coefficient by the ratio of the dynamic response coefficient of the structural connection to the first reference value, calculates the distribution uniformity coefficient by the ratio of the stress concentration distribution coefficient to the second reference value, calculates the state value of the stress concentration zone of the structural connection based on the dynamic stability coefficient and the distribution uniformity coefficient, and stores the calculated state value in the memory.

[0091] Based on the above embodiments, as an optional embodiment, the dynamic response coefficient of the structural connection is calculated based on the first analysis result. The step of calculating the stress concentration distribution coefficient based on the second analysis result may include steps S501 to S503: S501: Construct a dynamic response feature matrix based on the first analysis results.

[0092] In the embodiments of this application, the dynamic response characteristic matrix refers to a matrix used to characterize the dynamic response characteristics of the stress concentration area of ​​the structural connection, and is used to analyze the dynamic change law of the structural connection area during the impact response process.

[0093] Specifically, the electronic device reads the first analysis results of the stress concentration area of ​​the structural connection from the memory, extracts the relevant feature values ​​of temperature gradient change characteristics and displacement response characteristics, arranges the relevant feature values ​​according to the time series to form a time dimension feature vector, and arranges them according to the spatial location to form a spatial dimension feature vector. The electronic device combines the time dimension feature vector and the spatial dimension feature vector to construct a dynamic response feature matrix. The constructed dynamic response feature matrix contains complete spatiotemporal feature information of the dynamic response process of the stress concentration area of ​​the structural connection.

[0094] For example, the electronic device reads the first analysis result feature value of the stress concentration area of ​​the structural connection from the memory, constructs a time dimension feature vector representing dynamic changes from the feature values ​​at different times, constructs a spatial dimension feature vector representing spatial distribution from the feature values ​​at different locations, uses the time dimension feature vector as the row vector of the dynamic response feature matrix, uses the spatial dimension feature vector as the column vector of the dynamic response feature matrix, and constructs a dynamic response feature matrix containing the dynamic response features of the stress concentration area of ​​the structural connection. The electronic device then stores the constructed dynamic response feature matrix in the memory.

[0095] To achieve the above construction, the discrete feature value data first needs to be structured and organized. Specifically, the electronic device reads the first analysis result feature values ​​F(Pi, tj) obtained from the memory at multiple spatial location points (e.g., P1, P2, ..., Pn) and multiple time points (e.g., t1, t2, ..., tm).

[0096] Please see Figure 3 , Figure 3 This is a schematic diagram illustrating the construction of a dynamic response feature matrix provided in an embodiment of this application. For example... Figure 3 As shown, to structure these discrete spatiotemporal data, a two-dimensional dynamic response feature matrix can be constructed. In this matrix, each row corresponds to a different time point (t), and each column corresponds to a different spatial location (P). Therefore, the element in the j-th row and i-th column of the matrix is ​​the eigenvalue F(Pi, tj) obtained at time tj and location Pi.

[0097] The dynamic response feature matrix constructed in this way can fully describe the dynamic spatiotemporal response characteristics of the region, providing structured data input for subsequent singular value decomposition. For example, arranging the feature values ​​at different times by rows constitutes a time-dimensional feature vector representing dynamic changes; arranging the feature values ​​at different locations by columns constitutes a spatial-dimensional feature vector representing spatial distribution. The final matrix is ​​the dynamic response feature matrix containing the dynamic response characteristics of the stress concentration area of ​​the structural connection, and electronic devices can store the dynamic response feature matrix in their memory.

[0098] S502: Perform singular value decomposition on the dynamic response feature matrix, select the eigenvector corresponding to the largest singular value, and determine the dynamic response coefficients of the structural connection based on the eigenvector.

[0099] In this embodiment, singular value decomposition refers to a mathematical processing method that decomposes the dynamic response feature matrix into a product of three matrices to extract the main feature information of the matrix; the eigenvector corresponding to the largest singular value is the eigenvector with the largest eigenvalue, which is used to characterize the main features of the dynamic response.

[0100] Specifically, the electronic device reads the dynamic response feature matrix from the memory, performs singular value decomposition on the dynamic response feature matrix to obtain the left singular matrix, singular value matrix and right singular matrix, selects the largest singular value from the singular value matrix, and extracts the eigenvectors of the left singular matrix and the right singular matrix corresponding to the largest singular value. The electronic device uses the eigenvector of the left singular matrix to represent the dynamic features in the time dimension and the eigenvector of the right singular matrix to represent the distribution features in the spatial dimension. The weighted combination of the two eigenvectors is calculated to obtain the dynamic response coefficient of the structural connection.

[0101] For example, an electronic device reads a dynamic response feature matrix from a memory, decomposes the matrix into a left singular matrix, a singular value matrix, and a right singular matrix through singular value decomposition, selects the largest singular value in the singular value matrix, extracts the corresponding eigenvector of the left singular matrix to represent the time dimension response feature, extracts the corresponding eigenvector of the right singular matrix to represent the spatial dimension response feature, sets the weights of the time dimension features and the weights of the spatial dimension features, and calculates the structural connection dynamic response coefficient by weighted combination of the two eigenvectors.

[0102] S503: Construct a stress characteristic matrix based on the second analysis results, perform principal component analysis on the stress characteristic matrix to obtain principal components, and determine the stress concentration distribution coefficient based on the principal components.

[0103] In this embodiment, the stress feature matrix refers to a matrix used to characterize the stress distribution characteristics of the stress concentration area of ​​the structural connection, and is used to analyze the stress distribution law of the stress concentration area; principal component analysis refers to a mathematical processing method for extracting the main feature information of the stress feature matrix; principal components refer to data that characterize the main features of stress distribution.

[0104] Specifically, the electronic device reads the second analysis results of the stress concentration area of ​​the structural connection from the memory, extracts the relevant feature values ​​of temperature distribution uniformity and stress response characteristics, arranges the relevant feature values ​​in the radial direction to form a radial dimension feature vector, and arranges them in the circumferential tangential direction to form a tangential dimension feature vector. The electronic device combines the radial dimension feature vector and the tangential dimension feature vector to construct a stress feature matrix, performs principal component analysis on the stress feature matrix to extract the principal component with the largest contribution rate, and calculates the stress concentration distribution coefficient based on the principal component.

[0105] To achieve the above construction, it is first necessary to extract structured feature values ​​from the second analysis results. Considering the stress concentration characteristics of the structural connection zone (which usually diverges from a point), using a polar coordinate system for analysis and data acquisition is more effective.

[0106] Please see Figure 4 , Figure 4 This is a schematic diagram illustrating the construction of a stress feature matrix according to an embodiment of this application. For example... Figure 4As shown on the left, to analyze the stress distribution pattern in the stress concentration region, the region is first divided into virtual meshes according to the polar coordinate system, resulting in multiple radial positions (r1, r2, ..., rk) and multiple tangential positions (θ1, θ2, ..., θl). Then, the characteristic value F(ri, θj) of the second analysis result corresponding to each mesh intersection point (ri, θj) is obtained.

[0107] like Figure 4 As shown on the right, a stress feature matrix is ​​constructed based on this data. The rows of this matrix can correspond to different radial positions (r), and the columns can correspond to different tangential positions (θ). The element in the i-th row and j-th column of the stress feature matrix is ​​the eigenvalue F(ri, θj) obtained at the radial position ri and the tangential position θj. This stress feature matrix intuitively reflects the spatial distribution pattern of stress in this region, providing a structured data foundation for subsequent principal component analysis to extract principal components and ultimately determine the stress concentration distribution coefficient. For example, the eigenvalues ​​along the radial direction constitute a radial dimension eigenvector representing the radial distribution, and the eigenvalues ​​along the circumferential tangential direction constitute a tangential dimension eigenvector representing the tangential distribution, thus constructing a complete stress feature matrix.

[0108] Based on the above embodiments, as an optional embodiment, the step of determining the state value of the stress concentration zone of the structural connection according to the dynamic response coefficient and stress concentration distribution coefficient of the structural connection may include steps S601 to S605: S601: Determine the dynamic stability coefficient based on the ratio of the structural connection dynamic response coefficient to the preset first reference value; determine the distribution uniformity coefficient based on the ratio of the stress concentration distribution coefficient to the preset second reference value.

[0109] Specifically, the electronic device reads the dynamic response coefficient of the structural connection from the memory, reads the preset first reference value, and calculates the dynamic stability coefficient by dividing the dynamic response coefficient of the structural connection by the first reference value. The dynamic stability coefficient characterizes the degree to which the dynamic response of the stress concentration area of ​​the structural connection conforms to the standard requirements. The electronic device reads the stress concentration distribution coefficient from the memory, reads the preset second reference value, and calculates the distribution uniformity coefficient by dividing the stress concentration distribution coefficient of the stress concentration area of ​​the structural connection by the second reference value. The distribution uniformity coefficient characterizes the degree to which the stress distribution of the stress concentration area of ​​the structural connection conforms to the standard requirements.

[0110] In this embodiment, the first and second basic state values ​​are benchmark parameters used to calculate the state value when a certain performance of the guardrail connection area fails to meet the standard. Their specific values ​​can be determined in one of the following ways: 1. Based on a large amount of guardrail impact test data, statistical analysis is performed to obtain the average performance score under a single failure mode with poor dynamic stability or uneven stress distribution, which is used as the basic state value; 2. According to relevant industry standards (such as the "Standard for Quality Inspection and Evaluation of Highway Traffic Safety Facilities"), the minimum acceptable performance score of the structural connection part under specific conditions is set. For example, the first basic state value can be set as the performance baseline when the stress distribution is good but the dynamic stability is insufficient, and the second basic state value can be set as the performance baseline when the dynamic stability is good but the stress concentration is severe.

[0111] S602: When the dynamic stability coefficient is greater than the first threshold and the distribution uniformity coefficient is greater than the second threshold, the dynamic stability coefficient and the distribution uniformity coefficient are weighted and summed to obtain the state value of the stress concentration zone of the structural connection.

[0112] Specifically, the electronic device reads the dynamic stability coefficient from the memory and compares it with the first threshold, and reads the distribution uniformity coefficient and compares it with the second threshold. When the dynamic stability coefficient is greater than the first threshold, it indicates that the dynamic response performance of the stress concentration area of ​​the structural connection meets the requirements. When the distribution uniformity coefficient is greater than the second threshold, it indicates that the stress distribution performance of the stress concentration area of ​​the structural connection meets the requirements. The electronic device sets the weights of the dynamic stability coefficient and the distribution uniformity coefficient, and calculates the state value of the stress concentration area of ​​the structural connection by weighted summation according to the weights.

[0113] For example, the electronic device reads a dynamic stability coefficient of 0.85 from the memory, and a first threshold of 0.8. It determines that the dynamic stability coefficient is greater than the first threshold. It then reads a distribution uniformity coefficient of 0.9, and a second threshold of 0.85. It determines that the distribution uniformity coefficient is greater than the second threshold. The dynamic stability coefficient is weighted at 0.6, and the distribution uniformity coefficient is weighted at 0.4. The dynamic stability coefficient and the distribution uniformity coefficient are weighted and summed according to their weights to calculate the state value of the stress concentration zone of the structural connection. The electronic device stores the calculated state value in the memory.

[0114] S603: When the dynamic stability coefficient is greater than the first threshold and the distribution uniformity coefficient is not greater than the second threshold, the state value of the stress concentration zone of the structural connection is determined based on the difference between the distribution uniformity coefficient and the second threshold and the preset first basic state value.

[0115] Specifically, the electronic device reads the dynamic stability coefficient from the memory and compares it with the first threshold, and reads the distribution uniformity coefficient and compares it with the second threshold. When the dynamic stability coefficient is greater than the first threshold, it indicates that the dynamic response performance of the stress concentration area of ​​the structural connection meets the requirements. When the distribution uniformity coefficient is not greater than the second threshold, it indicates that the stress distribution performance of the stress concentration area of ​​the structural connection does not meet the requirements. The electronic device calculates the difference between the distribution uniformity coefficient and the second threshold and adds 1. The calculation result is multiplied by the preset first basic state value to obtain the state value of the stress concentration area of ​​the structural connection.

[0116] S604: When the dynamic stability coefficient is not greater than the first threshold and the distribution uniformity coefficient is greater than the second threshold, the state value of the stress concentration zone of the structural connection is determined based on the difference between the dynamic stability coefficient and the first threshold and the preset second basic state value.

[0117] Specifically, the electronic device reads the dynamic stability coefficient from the memory and compares it with the first threshold, and reads the distribution uniformity coefficient and compares it with the second threshold. When the dynamic stability coefficient is not greater than the first threshold, it indicates that the dynamic response performance of the stress concentration area of ​​the structural connection does not meet the requirements. When the distribution uniformity coefficient is greater than the second threshold, it indicates that the stress distribution performance of the stress concentration area of ​​the structural connection meets the requirements. The electronic device calculates the difference between the dynamic stability coefficient and the first threshold and adds 1. The calculation result is multiplied by the preset second basic state value to obtain the state value of the stress concentration area of ​​the structural connection.

[0118] S605: When the dynamic stability coefficient is not greater than the first threshold and the distribution uniformity coefficient is not greater than the second threshold, the state value of the stress concentration zone of the structural connection is determined based on the first basic state value and the second basic state value.

[0119] Specifically, the electronic device reads the dynamic stability coefficient from the memory and compares it with the first threshold, and reads the distribution uniformity coefficient and compares it with the second threshold. When the dynamic stability coefficient is not greater than the first threshold, it indicates that the dynamic response performance of the stress concentration area of ​​the structural connection does not meet the requirements. When the distribution uniformity coefficient is not greater than the second threshold, it indicates that the stress distribution performance of the stress concentration area of ​​the structural connection does not meet the requirements. The electronic device sets the weight of the first basic state value and the weight of the second basic state value, and calculates the state value of the stress concentration area of ​​the structural connection by weighting the first basic state value and the second basic state value according to the weight.

[0120] S105: Determine the protection capability level of the target highway corrugated beam guardrail based on the status values ​​of each area.

[0121] Specifically, the electronic device reads the state value of the frontal impact absorption zone from the memory, compares the state value with the preset energy absorption performance grading standard to determine the energy absorption performance level of the target highway corrugated beam guardrail, reads the state value of the sidewall shear tension zone, compares the state value with the preset deformation degree grading standard to determine the deformation degree level of the target highway corrugated beam guardrail, reads the state value of the structural connection stress concentration zone, compares the state value with the preset connection stability grading standard to determine the connection stability level of the target highway corrugated beam guardrail, and the electronic device comprehensively evaluates the grading results of the three zones according to preset rules to obtain the protection capability level of the target highway corrugated beam guardrail.

[0122] Based on the above embodiments, as an optional embodiment, the step of determining the protection capability level of the target highway corrugated beam guardrail according to the state values ​​of each area may include steps S701 to S704: S701: Evaluate the energy absorption performance level under impact response test based on the state value of the frontal impact absorption zone.

[0123] In this embodiment of the application, the energy absorption performance level refers to the performance level index evaluated based on the state value of the frontal impact absorption zone, which is used to characterize the ability of the corrugated beam guardrail to absorb impact energy.

[0124] Specifically, the electronic device reads the state value of the frontal impact absorption zone from the memory and reads the preset energy absorption performance grading standard. The grading standard includes the correspondence between state value ranges and grades. The electronic device compares the state value with the state value range in the grading standard to determine the energy absorption performance grade corresponding to the range to which the state value belongs. The electronic device uses the determined energy absorption performance grade as the evaluation result of the wave beam guardrail's energy absorption performance under the impact response test.

[0125] For example, the electronic device reads the frontal impact absorption zone state value of 0.85 from the memory, reads the preset energy absorption performance grading standard, and the grading standard stipulates that a state value greater than 0.8 is grade A, a state value between 0.6 and 0.8 is grade B, and a state value less than 0.6 is grade C. The electronic device compares the state value of 0.85 with the grading standard, determines that the state value is greater than 0.8, and evaluates the energy absorption performance level as grade A. The electronic device stores the evaluated energy absorption performance level in the memory.

[0126] S702: Evaluate the degree of deformation under impact response test based on the state value of the shear tension zone of the sidewall.

[0127] In the embodiments of this application, the deformation degree level refers to the performance level index evaluated based on the shear tension zone state value of the sidewall, which is used to characterize the degree of lateral deformation of the corrugated beam guardrail.

[0128] Specifically, the electronic device reads the state value of the sidewall shear tension zone from the memory and reads the preset deformation degree grading standard. The grading standard includes the correspondence between state value intervals and levels. The electronic device compares the state value with the state value interval in the grading standard to determine the deformation degree level corresponding to the interval to which the state value belongs. The electronic device uses the determined deformation degree level as the evaluation result of the deformation degree of the corrugated beam guardrail under the impact response test.

[0129] For example, the electronic device reads the state value of the sidewall shear tension zone from the memory as 0.82, reads the preset deformation degree grading standard, and the grading standard stipulates that a state value greater than 0.85 is grade A, a state value between 0.7 and 0.85 is grade B, and a state value less than 0.7 is grade C. The electronic device compares the state value of 0.82 with the grading standard, determines that the state value is between 0.7 and 0.85, and evaluates the deformation degree level as grade B. The electronic device stores the evaluated deformation degree level in the memory.

[0130] S703: Evaluate the stability level of the connection under impact response testing based on the state values ​​of the stress concentration zone of the structural connection.

[0131] In the embodiments of this application, the connection stability level refers to the performance level index evaluated based on the stress concentration zone state value of the structural connection, which is used to characterize the stability of the connection parts of the corrugated beam guardrail.

[0132] Specifically, the electronic device reads the state value of the stress concentration area of ​​the structural connection from the memory, reads the preset connection stability grading standard, which includes the correspondence between state value intervals and levels. The electronic device compares the state value with the state value interval in the grading standard to determine the connection stability level corresponding to the interval to which the state value belongs. The electronic device uses the determined connection stability level as the evaluation result of the connection stability of the corrugated beam guardrail under the impact response test.

[0133] For example, the electronic device reads the stress concentration zone state value of the structural connection from the memory as 0.88, reads the preset connection stability grading standard, and the grading standard stipulates that a state value greater than 0.85 is grade A, a state value between 0.7 and 0.85 is grade B, and a state value less than 0.7 is grade C. The electronic device compares the state value of 0.88 with the grading standard, determines that the state value is greater than 0.85, and evaluates the connection stability level as grade A. The electronic device stores the evaluated connection stability level in the memory.

[0134] S704: Determine the protection capability level of the target highway corrugated beam guardrail by comprehensively considering the energy absorption performance level, deformation degree level, and connection stability level.

[0135] In this embodiment of the application, the protection capability level refers to the overall performance level index obtained by combining the evaluation results of the three areas, which is used to characterize the comprehensive protection capability of the corrugated beam guardrail; the comprehensive evaluation refers to the process of comprehensively judging the evaluation results of the three areas according to preset rules.

[0136] Specifically, the electronic device reads the energy absorption performance level, deformation degree level, and connection stability level from the memory, and reads the preset protection capability assessment rules. The assessment rules include the correspondence between the three regional level combinations and the protection capability levels. The electronic device compares the three regional level combinations with the assessment rules to determine the protection capability level corresponding to the level combination. The electronic device uses the determined protection capability level as the final assessment result of the target highway corrugated beam guardrail.

[0137] For example, the electronic device reads from the memory that the energy absorption performance level is A, the deformation level is B, and the connection stability level is A. It then reads the preset protection capability assessment rules, which stipulate that the protection capability is special when all three area levels are A, the protection capability is A when two A levels and one B level are A, and the protection capability is B when two B levels and one A level are B. The electronic device compares the combination of the three area levels with the assessment rules to determine that two A levels and one B level correspond to a protection capability of A. The electronic device then stores the assessed protection capability level in its memory.

[0138] The following describes an exemplary electronic device for assessing the protective capability of highway corrugated beam guardrails, provided by an embodiment of this application. Figure 5 This is an exemplary hardware structure diagram of an electronic device for assessing the protective capability of a highway corrugated beam guardrail, provided in an embodiment of this application.

[0139] In some embodiments, the electronic device for assessing the protective capability of highway corrugated beam guardrails is a computer device, or the electronic device for assessing the protective capability of highway corrugated beam guardrails based on user behavior includes a computer device. The computer device includes a processor, memory, and a network interface connected via a system bus. The processor of the computer device provides computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The database of the computer device stores data. The network interface of the computer device is used to communicate with other external terminals or servers via a network connection. In some embodiments, the network interface can be a wired network interface; in some embodiments, the network interface can also be a wireless network interface. When the computer program is executed by the processor, it implements the methods in the embodiments of this application.

[0140] Those skilled in the art will understand that Figure 5The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0141] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0142] As used in the above embodiments, depending on the context, the term "when..." can be interpreted as meaning "if...", "after...", "in response to determining...", or "in response to detecting...". Similarly, depending on the context, the phrase "when determining..." or "if (the stated condition or event) is interpreted as meaning "if determining...", "in response to determining...", "when (the stated condition or event) is detected", or "in response to detecting (the stated condition or event)".

[0143] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state drive), etc.

[0144] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. This program can be stored in a computer-readable storage medium, and when executed, it can include the processes described in the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM or random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A method for evaluating the protective capacity of highway corrugated beam guardrails, characterized in that, The method includes: The response characteristics of each region of the target highway corrugated beam guardrail under impact response test are obtained. The regions include the front impact absorption zone, the side wall shear tension zone, and the structural connection stress concentration zone. Real-time acquisition of the surface temperature of each region under impact response testing; The surface temperature of each region is differentially processed to obtain differential temperature rise maps for each region. Each differential temperature rise map includes a spatial differential temperature rise map corresponding to the front impact absorption region, a time differential temperature rise map corresponding to the sidewall shear tension region, and a radial differential temperature rise map corresponding to the structural connection stress concentration region. The temperature rise characteristics of each region are extracted from the differential temperature rise map of each region, and the state value of each region is determined based on the response characteristics and temperature rise characteristics of each region. The protection capability level of the target highway corrugated beam guardrail is determined based on the state values ​​of each of the aforementioned areas.

2. The method for evaluating the protective capacity of highway corrugated beam guardrails according to claim 1, characterized in that, The step of performing differential processing on the surface temperature of each region to obtain a differential temperature rise map for each region specifically includes: The initial surface temperature of each region before the impact response test and the real-time surface temperature during the impact response test are obtained. For the frontal impact absorption zone, the temperature change between the real-time surface temperature and the initial surface temperature is processed using a spatial difference method. For the sidewall shear tension zone, the temperature change between the real-time surface temperature and the initial surface temperature is processed using a time difference method. For the stress concentration area of ​​the structural connection, the temperature change between the real-time surface temperature and the initial surface temperature is processed using a radial differential method. The processing results of spatial difference, temporal difference, and radial difference are normalized respectively to generate differential temperature rise maps for each region.

3. The method for evaluating the protective capacity of highway corrugated beam guardrails according to claim 1, characterized in that, The temperature rise characteristics include temperature gradient change characteristics and temperature distribution uniformity characteristics; the response characteristics include displacement response characteristics and stress response characteristics; and determining the state values ​​of each region based on the response characteristics and temperature rise characteristics of each region specifically includes: The temperature gradient change characteristics are correlated with the displacement response characteristics obtained under the impact response test to obtain the first analysis result; The temperature distribution uniformity characteristics are correlated with the stress response characteristics obtained under the impact response test to obtain the second analysis result. Based on the first analysis result and the second analysis result, the state value of each region is determined.

4. The method for evaluating the protective capacity of highway corrugated beam guardrails according to claim 3, characterized in that, The step of determining the state value of each region based on the first analysis result and the second analysis result specifically includes: For the frontal impact absorption zone, the impact energy absorption response coefficient is calculated based on the first analysis result; the structural deformation compatibility coefficient is calculated based on the second analysis result; and the state value of the frontal impact absorption zone is determined according to the impact energy absorption response coefficient and the structural deformation compatibility coefficient. For the sidewall shear-tension zone, the shear deformation response coefficient is calculated based on the first analysis result; the tensile bearing response coefficient is calculated based on the second analysis result; and the state value of the sidewall shear-tension zone is determined according to the shear deformation response coefficient and the tensile bearing response coefficient. For the stress concentration zone of the structural connection, the dynamic response coefficient of the structural connection is calculated based on the first analysis result; the stress concentration distribution coefficient is calculated based on the second analysis result; and the state value of the stress concentration zone of the structural connection is determined according to the dynamic response coefficient of the structural connection and the stress concentration distribution coefficient.

5. The method for evaluating the protective capacity of highway corrugated beam guardrails according to claim 4, characterized in that, The calculation of the dynamic response coefficient of the structural connection based on the first analysis result and the calculation of the stress concentration distribution coefficient based on the second analysis result specifically include: A dynamic response feature matrix is ​​constructed based on the first analysis results; Singular value decomposition is performed on the dynamic response feature matrix, the eigenvector corresponding to the largest singular value is selected, and the dynamic response coefficient of the structural connection is determined based on the eigenvector. Based on the second analysis result, a stress feature matrix is ​​constructed, and principal component analysis is performed on the stress feature matrix to obtain principal components. Based on the principal components, the stress concentration distribution coefficient is determined.

6. The method for evaluating the protective capacity of highway corrugated beam guardrails according to claim 4, characterized in that, The step of determining the state value of the stress concentration zone of the structural connection based on the dynamic response coefficient of the structural connection and the stress concentration distribution coefficient specifically includes: The dynamic stability coefficient is determined based on the ratio of the dynamic response coefficient of the structural connection to a preset first reference value; the distribution uniformity coefficient is determined based on the ratio of the stress concentration distribution coefficient to a preset second reference value. When the dynamic stability coefficient is greater than the first threshold and the distribution uniformity coefficient is greater than the second threshold, the dynamic stability coefficient and the distribution uniformity coefficient are weighted and summed to obtain the state value of the stress concentration zone of the structural connection. When the dynamic stability coefficient is greater than the first threshold and the distribution uniformity coefficient is not greater than the second threshold, the state value of the structural connection stress concentration zone is determined based on the difference between the distribution uniformity coefficient and the second threshold and the preset first basic state value. When the dynamic stability coefficient is not greater than the first threshold and the distribution uniformity coefficient is greater than the second threshold, the state value of the stress concentration zone of the structural connection is determined based on the difference between the dynamic stability coefficient and the first threshold and the preset second basic state value. When the dynamic stability coefficient is not greater than the first threshold and the distribution uniformity coefficient is not greater than the second threshold, the state value of the stress concentration zone of the structural connection is determined based on the first basic state value and the second basic state value.

7. The method for evaluating the protective capacity of highway corrugated beam guardrails according to claim 1, characterized in that, The determination of the protection capability level of the target highway corrugated beam guardrail based on the state values ​​of each of the aforementioned areas specifically includes: The energy absorption performance level under impact response test is evaluated based on the state value of the frontal impact absorption zone. Based on the state values ​​of the shear-tension zone of the sidewall, assess the degree of deformation under the impact response test; Based on the state values ​​of the stress concentration zone in the structural connection, the connection stability level under the impact response test is evaluated. Based on the combined energy absorption performance level, deformation degree level, and connection stability level, the protection capability level of the target highway corrugated beam guardrail is determined.

8. An electronic device for assessing the protective capability of highway corrugated beam guardrails, characterized in that, The electronic device includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code including computer instructions, and the one or more processors call the computer instructions to cause the electronic device to perform the method as described in any one of claims 1-7.

9. A computer program product containing instructions, characterized in that, When the computer program product is run on an electronic device for assessing the protective capability of highway corrugated beam guardrails, the electronic device performs the method as described in any one of claims 1-7.

10. A computer-readable storage medium comprising instructions, characterized in that, When the instruction is executed on an electronic device for assessing the protective capability of highway corrugated beam guardrails, the electronic device performs the method as described in any one of claims 1-7.

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