Concrete corrosion detection method based on chloride corrosion model of concrete pipe

Abstract

The present invention belongs to the technical field of concrete anti-erosion detection technology and provides a concrete anti-erosion detection method based on a chloride corrosion model for concrete pipes. The method comprises the following steps: obtaining seawater chloride ion concentration data for a target area and determining a chloride corrosion model for the concrete pipes; correcting the chloride corrosion model for the concrete pipes based on the seawater chloride ion concentration data to obtain a corrected chloride corrosion model for the concrete pipes; conducting a simulation experiment on the performance degradation and mechanical damage mechanism of the concrete structure based on the corrected chloride corrosion model for the concrete pipes to obtain simulation experimental results; analyzing the durability of the concrete structure based on the simulation experimental results, and optimizing the concrete maintenance and management strategy based on the analysis results. By utilizing the chloride corrosion model for concrete pipes, the present invention can improve the quality and effectiveness of concrete anti-erosion detection and contribute to improving the design, management and maintenance of concrete pipe structures in complex coastal environments.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete anti-erosion detection, in particular to a concrete anti-erosion detection method based on a concrete pipe chloride salt corrosion model. Background Art

[0002] Concrete-filled steel tube (CFST) structures are composed of steel and concrete, both of which have limited service lives in chloride-corrosion environments and require high maintenance costs. Currently, research in academia and engineering focuses on the corrosion of reinforced concrete structures in chloride-corrosion environments at the material and component levels. Experimental research methods are widely used in these studies to gain a deeper understanding of the chloride-induced corrosion mechanism of reinforced concrete structures. However, scientific and precise statistical analysis of chloride-induced reinforced concrete corrosion is lacking, resulting in insufficient quality and effectiveness of testing, which in turn impacts the construction design of concrete pipe piles in salt sea environments.

[0003] Therefore, it is necessary to provide a concrete corrosion prevention detection method based on the concrete pipe chloride salt corrosion model. Summary of the Invention

[0004] The present invention provides a concrete anti-erosion detection method based on a chloride salt corrosion model for concrete pipes. By utilizing the chloride salt corrosion model for concrete pipes, concrete anti-erosion detection can be performed on concrete pipes, thereby improving the quality and effectiveness of concrete anti-erosion detection and contributing to improving the level of concrete pipe structural design, management and maintenance in complex coastal environments.

[0005] The present invention provides a concrete anti-corrosion detection method based on a concrete pipe chloride corrosion model, comprising:

[0006] Obtain seawater chloride ion concentration data in the target area and determine the chloride corrosion model for concrete pipes;

[0007] According to the seawater chloride ion concentration data, the chloride corrosion model of concrete pipes was modified to obtain the modified chloride corrosion model of concrete pipes.

[0008] Based on the revised concrete pipe chloride corrosion model, simulation experiments were conducted on the degradation of concrete structure performance and mechanical damage mechanism, and simulation experimental results were obtained;

[0009] Based on the simulation test results, the durability of the concrete structure is analyzed, and the concrete maintenance management strategy is optimized based on the analysis results.

[0010] Furthermore, seawater chloride ion concentration data of the target area is obtained and a chloride corrosion model for concrete pipes is determined, including:

[0011] Conduct field seawater sampling in the target area, measure chloride ion concentrations at different depths, and obtain seawater chloride ion concentration data for the target area;

[0012] Based on the big data model library, the chloride corrosion model of concrete pipes is selected and determined.

[0013] Furthermore, the concrete pipe chloride corrosion model is modified according to the seawater chloride ion concentration data to obtain a modified concrete pipe chloride corrosion model, including:

[0014] Based on seawater chloride ion concentration data, for concrete structures of different service years, different concrete strengths, different elevations, and different relative surfaces, several target analysis data on the change of chloride ion content with seawater depth are obtained;

[0015] Using the concrete pipe chloride corrosion model, the target analysis data is analyzed and compared to obtain analysis and comparison results;

[0016] According to the analysis and comparison results, the curve fitting technology was used to modify the parameters of the chloride corrosion model for concrete pipes and the modified chloride corrosion model for concrete pipes was obtained.

[0017] Furthermore, based on the analysis and comparison results, the curve fitting technology is used to modify the parameters of the concrete pipe chloride corrosion model to obtain a modified concrete pipe chloride corrosion model, which also includes:

[0018] Finite difference method is used to convert the modified chloride corrosion model of concrete pipe into a discrete object, and numerical calculation model programming is performed to obtain numerical calculation results.

[0019] According to the numerical calculation results, by changing the model parameter values, the influence and importance of several parameters of the modified concrete pipe chloride corrosion model on the model accuracy are obtained.

[0020] Furthermore, based on the revised concrete pipe chloride corrosion model, simulation experiments were conducted on the degradation and mechanical damage mechanisms of concrete structures, and the simulation results were obtained, including:

[0021] Set several load conditions; load conditions include shear, bending and compression bending of concrete structures;

[0022] Based on the load conditions, the modified chloride corrosion model of concrete pipes was used to simulate the degradation of concrete structure performance and the degree of mechanical damage, and the simulation experimental results were obtained.

[0023] Furthermore, based on the load conditions, the modified chloride corrosion model for concrete pipes was used to simulate the degradation of concrete structure performance and the degree of mechanical damage. The simulation results obtained include:

[0024] Based on the load condition of shearing the concrete structure, the modified concrete pipe chloride corrosion model is used to conduct a first simulation experiment on the performance degradation of the concrete structure after shearing, and obtain the first simulation experiment data;

[0025] Based on the load condition of bending the concrete structure, a second simulation experiment was conducted on the performance degradation of the concrete structure after bending using the modified chloride salt corrosion model of concrete pipes to obtain the second simulation experiment data;

[0026] Based on the load conditions of concrete structure compression and bending, the modified chloride corrosion model of concrete pipe was used to conduct a third simulation experiment on the performance degradation of the concrete structure after compression and bending, and obtain the third simulation experiment data;

[0027] The first simulation experiment data, the second simulation experiment data and the third simulation experiment data are integrated to obtain a simulation experiment result.

[0028] Furthermore, based on the simulation test results, the durability of the concrete structure was analyzed, and the concrete maintenance management strategy was optimized based on the analysis results, including:

[0029] According to the test results, the concrete structure performance degradation data is obtained and adjusted to obtain the adjusted concrete structure performance degradation data;

[0030] Based on the adjusted concrete structure performance degradation data, the durability of the concrete structure is analyzed, and the ultimate service life of the concrete is calculated. According to the ultimate service life of the concrete, the concrete maintenance management strategy is optimized.

[0031] Furthermore, based on the test results, concrete structure performance degradation data is obtained and adjusted to obtain adjusted concrete structure performance degradation data, including:

[0032] Obtain concrete structure performance degradation data based on test results;

[0033] Based on the decrease in model accuracy caused by the degradation of the modified concrete pipe chloride corrosion model, the concrete structure performance degradation data is adjusted according to the set adjustment strategy to obtain the adjusted concrete structure performance degradation data.

[0034] Furthermore, based on the adjusted concrete structure performance degradation data, the durability of the concrete structure is analyzed and the ultimate service life of the concrete is calculated. Based on the ultimate service life of the concrete, the concrete maintenance management strategy is optimized, including:

[0035] According to the adjusted concrete structure performance degradation data from the test, the degradation rate and degree of the concrete structure performance are predicted for several set periods using the set long-short-term memory network model to obtain several degradation degree values. The degradation rate of the concrete structure performance is calculated based on the change in the degradation degree values.

[0036] Based on the degradation rate of concrete structure performance and several degradation degree values, the ultimate service life of the concrete structure is calculated according to the initial performance of the concrete structure;

[0037] According to the ultimate service life, the concrete maintenance management strategy is optimized based on the designed objective function.

[0038] Furthermore, based on the ultimate service life and the design objective function, the concrete maintenance management strategy is optimized, including:

[0039] Obtaining maintenance management priorities for the concrete pipe structure to be maintained based on the concrete structure performance degradation rate, several degradation degree values, and the ultimate service life of the concrete structure;

[0040] Determine the maintenance and management order of the concrete pipe structure to be maintained according to the maintenance and management priority;

[0041] With the goal of minimizing the total maintenance and management costs and the impact on the use of concrete pipes, the maintenance plan for the concrete pipes to be maintained is determined by constructing a concrete pipe maintenance and management model. The objective function of the concrete pipe maintenance and management model is:

[0042] MinG(X)=a1*P+a2*Q

[0043] Where MinG(X) represents the minimum function, G(X) represents the objective function, X represents the concrete pipe pile maintenance plan, P represents the total maintenance and management cost, a1 represents the weight coefficient of the total maintenance and management cost, Q represents the impact of concrete pipe use, and a2 represents the weight coefficient of the degradation degree value. The constraints of the concrete pipe maintenance and management model include: maintenance frequency constraint and cost constraint.

[0044] The impact of concrete pipe usage is determined based on the following steps:

[0045] Set up a corresponding matching relationship library between degradation degree values ​​and basic impacts of concrete pipe use;

[0046] Based on the degradation degree value, the basic impact degree of concrete pipe use is obtained by matching in the corresponding matching relationship library;

[0047] Based on the degradation rate of concrete structure performance, a first neural network probability prediction model is used to make a first prediction of the probability of a first change in the basic influence degree of concrete pipe use, thereby obtaining a first prediction result; the first change is that the floating value of the change in the basic influence degree of use is greater than a set floating threshold;

[0048] Based on the basic impact degree of concrete pipe use, using a second neural network probability prediction model, a second prediction is made on the situation of shortening the service life of the concrete structure affected by the basic impact degree of concrete pipe use to obtain a second prediction result;

[0049] If the probability value in the first prediction result is greater than the set first probability threshold, and the probability value in the second prediction result is greater than the set second probability threshold, the concrete pipe use influence is generated after adding a weight to the basic influence.

[0050] Compared with the existing technology, the present invention has the following advantages and beneficial effects: by using the chloride salt corrosion model of concrete pipes to carry out concrete anti-corrosion detection on concrete pipes, the quality and effect of concrete anti-corrosion detection can be improved, which helps to improve the level of concrete pipe structure design and management and maintenance in complex coastal environments.

[0051] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0052] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0054] Figure 1 Schematic diagram of the steps of the concrete corrosion prevention detection method based on the concrete pipe chloride salt corrosion model;

[0055] Figure 2 Schematic diagram of the method steps for obtaining seawater chloride ion concentration data in the target area and determining the chloride corrosion model for concrete pipes;

[0056] Figure 3 Schematic diagram of the method steps for simulating the degradation and mechanical damage mechanisms of concrete structures based on the revised chloride corrosion model for concrete pipes and obtaining simulation experimental results. DETAILED DESCRIPTION

[0057] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0058] The present invention provides a concrete corrosion prevention detection method based on the concrete pipe chloride salt corrosion model, such as Figure 1 As shown, including:

[0059] Obtain seawater chloride ion concentration data in the target area and determine the chloride corrosion model for concrete pipes;

[0060] According to the seawater chloride ion concentration data, the chloride corrosion model of concrete pipes was modified to obtain the modified chloride corrosion model of concrete pipes.

[0061] Based on the revised concrete pipe chloride corrosion model, simulation experiments were conducted on the degradation of concrete structure performance and mechanical damage mechanism, and simulation experimental results were obtained;

[0062] Based on the simulation test results, the durability of the concrete structure is analyzed, and the concrete maintenance management strategy is optimized based on the analysis results.

[0063] The working principle of the above technical solution is as follows: in order to implement a concrete corrosion prevention detection method based on a chloride corrosion model for concrete pipes, the present invention first obtains seawater chloride ion concentration data in the target area and determines the chloride corrosion model for concrete pipes; then, based on the seawater chloride ion concentration data, the chloride corrosion model for concrete pipes is corrected to obtain a corrected chloride corrosion model for concrete pipes; then, based on the corrected chloride corrosion model for concrete pipes, a simulation experiment is conducted on the performance degradation and mechanical damage mechanism of the concrete structure to obtain simulation experiment results; finally, based on the simulation experiment results, the durability of the concrete structure is analyzed, and the concrete maintenance management strategy is optimized based on the analysis results.

[0064] The beneficial effects of the above technical solution are: by adopting the solution provided in this embodiment, by using the chloride salt corrosion model of concrete pipes to perform concrete anti-corrosion testing on concrete pipes, the quality and effect of concrete anti-corrosion testing can be improved, which helps to improve the level of concrete pipe structure design, management and maintenance in complex coastal environments.

[0065] In one embodiment, Figure 2 As shown, obtain the seawater chloride ion concentration data of the target area and determine the chloride salt corrosion model of the concrete pipe, including:

[0066] Conduct field seawater sampling in the target area, measure chloride ion concentrations at different depths, and obtain seawater chloride ion concentration data for the target area;

[0067] Based on the big data model library, the chloride corrosion model of concrete pipes is selected and determined.

[0068] The working principle of the above technical solution is as follows: in order to obtain the seawater chloride ion concentration data of the target area and determine the chloride salt corrosion model of the concrete pipe, the present invention first conducts on-site seawater sampling of the seawater environment in the target area, measures the chloride ion concentration at different depths, and obtains the seawater chloride ion concentration data of the target area; then, based on the big data model library, the chloride salt corrosion model of the concrete pipe is selected and determined.

[0069] The beneficial effect of the above technical solution is: by adopting the solution provided by this embodiment, by obtaining the seawater chloride ion concentration data of the target area and determining the chloride salt corrosion model of the concrete pipe, a basis and basis are provided for subsequent analysis.

[0070] In one embodiment, the concrete pipe chloride corrosion model is modified according to seawater chloride ion concentration data to obtain a modified concrete pipe chloride corrosion model, including:

[0071] Based on seawater chloride ion concentration data, for concrete structures of different service years, different concrete strengths, different elevations, and different relative surfaces, several target analysis data on the change of chloride ion content with seawater depth are obtained;

[0072] Using the concrete pipe chloride corrosion model, the target analysis data is analyzed and compared to obtain analysis and comparison results;

[0073] According to the analysis and comparison results, the curve fitting technology was used to modify the parameters of the chloride corrosion model for concrete pipes and the modified chloride corrosion model for concrete pipes was obtained.

[0074] The working principle of the above technical solution is as follows: in order to correct the chloride corrosion model of concrete pipes based on seawater chloride ion concentration data and obtain a corrected chloride corrosion model for concrete pipes, the present invention first obtains a number of target analysis data corresponding to the change of chloride ion content with seawater depth for concrete structures of different service years, different concrete strengths, different elevations and different relative surfaces based on the seawater chloride ion concentration data; then, using the chloride corrosion model for concrete pipes, the target analysis data are analyzed and compared to obtain analysis and comparison results; finally, based on the analysis and comparison results, the curve fitting technology is used to correct the parameters of the chloride corrosion model for concrete pipes to obtain a corrected chloride corrosion model for concrete pipes.

[0075] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, the chloride corrosion model of concrete pipes is corrected according to the seawater chloride ion concentration data, and the corrected chloride corrosion model of concrete pipes is obtained, which can provide a basis for subsequent detection.

[0076] In one embodiment, based on the analysis and comparison results, a curve fitting technique is used to modify the parameters of the concrete pipe chloride corrosion model to obtain a modified concrete pipe chloride corrosion model, which further includes:

[0077] Finite difference method is used to convert the modified chloride corrosion model of concrete pipe into a discrete object, and numerical calculation model programming is performed to obtain numerical calculation results.

[0078] According to the numerical calculation results, by changing the model parameter values, the influence and importance of several parameters of the modified concrete pipe chloride corrosion model on the model accuracy are obtained.

[0079] The working principle of the above technical solution is as follows: In order to improve the quality of the revised concrete pipe chloride corrosion model, the present invention first uses the finite difference method to convert the revised concrete pipe chloride corrosion model into a discrete object, and then performs numerical calculation model programming to obtain numerical calculation results. Then, based on the numerical calculation results, by changing the model parameter values ​​for calculation and analysis, the influence and importance of several parameters of the revised concrete pipe chloride corrosion model on the corresponding model accuracy are obtained.

[0080] The beneficial effect of the above technical solution is that: by adopting the solution provided by this embodiment, the quality of the revised concrete pipe chloride corrosion model can be improved through analysis and calculation of the parameters of the revised concrete pipe chloride corrosion model.

[0081] In one embodiment, Figure 3 As shown in the figure, based on the modified chloride corrosion model of concrete pipes, simulation experiments were conducted on the degradation of concrete structure performance and mechanical damage mechanism, and the simulation experimental results were obtained, including:

[0082] Set several load conditions; load conditions include shear, bending and compression bending of concrete structures;

[0083] Based on the load conditions, the modified chloride corrosion model of concrete pipes was used to simulate the degradation of concrete structure performance and the degree of mechanical damage, and the simulation experimental results were obtained.

[0084] The working principle of the above technical solution is as follows: in order to simulate the performance degradation and mechanical damage mechanism of concrete structures and obtain simulation experimental results, the present invention first sets several load conditions; the load conditions include shear resistance, bending, and compression bending of the concrete structure; then, based on the load conditions, the modified concrete pipe chloride salt corrosion model is used to simulate the performance degradation and mechanical damage degree of the concrete structure to obtain simulation experimental results.

[0085] The beneficial effect of the above technical solution is that by adopting the solution provided in this embodiment, accurate simulation test results can be obtained by conducting simulation experiments on the performance degradation and mechanical damage degree of concrete structures.

[0086] In one embodiment, based on the load conditions, a modified chloride corrosion model for concrete pipes is used to simulate the degradation of concrete structure performance and the degree of mechanical damage, and the simulation results obtained include:

[0087] Based on the load condition of shearing the concrete structure, the modified concrete pipe chloride corrosion model is used to conduct a first simulation experiment on the performance degradation of the concrete structure after shearing, and obtain the first simulation experiment data;

[0088] Based on the load condition of bending the concrete structure, a second simulation experiment was conducted on the performance degradation of the concrete structure after bending using the modified chloride salt corrosion model of concrete pipes to obtain the second simulation experiment data;

[0089] Based on the load conditions of concrete structure compression and bending, the modified chloride corrosion model of concrete pipe was used to conduct a third simulation experiment on the performance degradation of the concrete structure after compression and bending, and obtain the third simulation experiment data;

[0090] The first simulation experiment data, the second simulation experiment data and the third simulation experiment data are integrated to obtain a simulation experiment result.

[0091] The working principle of the above technical solution is as follows: in order to realize the simulation experiment of the performance degradation and mechanical damage degree of the concrete structure and obtain the simulation experiment results, the present invention first performs a first simulation experiment on the performance degradation of the concrete structure after shearing based on the load condition of shearing the concrete structure and using the modified concrete pipe chloride salt corrosion model to obtain first simulation experiment data; then, based on the load condition of bending the concrete structure and using the modified concrete pipe chloride salt corrosion model, a second simulation experiment is performed on the performance degradation of the concrete structure after bending to obtain second simulation experiment data; then, based on the load condition of compression and bending the concrete structure and using the modified concrete pipe chloride salt corrosion model, a third simulation experiment is performed on the performance degradation of the concrete structure after compression and bending to obtain third simulation experiment data; finally, the simulation experiment results are obtained by combining the first simulation experiment data, the second simulation experiment data and the third simulation experiment data.

[0092] The beneficial effect of the above technical solution is that by adopting the solution provided by this embodiment and conducting different simulation experiments based on different load conditions, the accuracy of the simulation experiment results can be improved.

[0093] In one embodiment, the durability of the concrete structure is analyzed based on the simulation test results, and the concrete maintenance management strategy is optimized based on the analysis results, including:

[0094] According to the test results, the concrete structure performance degradation data is obtained and adjusted to obtain the adjusted concrete structure performance degradation data;

[0095] Based on the adjusted concrete structure performance degradation data, the durability of the concrete structure is analyzed, and the ultimate service life of the concrete is calculated. According to the ultimate service life of the concrete, the concrete maintenance management strategy is optimized.

[0096] The working principle of the above technical solution is: in order to analyze the durability of the concrete structure and optimize the concrete maintenance management strategy based on the analysis results, the present invention first obtains and adjusts the concrete structure performance degradation data based on the test results to obtain the adjusted concrete structure performance degradation data; then, based on the adjusted concrete structure performance degradation data, the durability of the concrete structure is analyzed, the ultimate service life of the concrete is calculated, and the concrete maintenance management strategy is optimized based on the ultimate service life of the concrete.

[0097] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, the durability of the concrete structure is analyzed, and the concrete maintenance management strategy is optimized according to the analysis results, so that the pertinence of the concrete maintenance management can be improved.

[0098] In one embodiment, obtaining and adjusting the concrete structure performance degradation data based on the test results to obtain the adjusted concrete structure performance degradation data includes:

[0099] Obtain concrete structure performance degradation data based on test results;

[0100] Based on the decrease in model accuracy caused by the degradation of the modified concrete pipe chloride corrosion model, the concrete structure performance degradation data is adjusted according to the set adjustment strategy to obtain the adjusted concrete structure performance degradation data.

[0101] The working principle of the above technical solution is as follows: in order to obtain and adjust the concrete structure performance degradation data and obtain the adjusted concrete structure performance degradation data, the present invention first obtains the concrete structure performance degradation data based on the test results; then, based on the decrease in model accuracy caused by the model degradation of the revised concrete pipe chloride corrosion model, the concrete structure performance degradation data is adjusted according to the set adjustment strategy to obtain the adjusted concrete structure performance degradation data.

[0102] The beneficial effect of the above technical solution is that: by adopting the solution provided by this embodiment, the accuracy of the concrete structure performance degradation data can be guaranteed by obtaining the adjusted concrete structure performance degradation data.

[0103] In one embodiment, the durability of the concrete structure is analyzed based on the adjusted concrete structure performance degradation data, and the ultimate service life of the concrete is calculated. Based on the ultimate service life of the concrete, the concrete maintenance management strategy is optimized, including:

[0104] According to the adjusted concrete structure performance degradation data from the test, the degradation rate and degree of the concrete structure performance are predicted for several set periods using the set long-short-term memory network model to obtain several degradation degree values. The degradation rate of the concrete structure performance is calculated based on the change in the degradation degree values.

[0105] Based on the degradation rate of concrete structure performance and several degradation degree values, the ultimate service life of the concrete structure is calculated according to the initial performance of the concrete structure;

[0106] According to the ultimate service life, the concrete maintenance management strategy is optimized based on the designed objective function.

[0107] The working principle of the above technical solution is: in order to analyze the durability of concrete structures, calculate the ultimate service life of concrete, and optimize the concrete maintenance management strategy according to the ultimate service life of concrete, the present invention first uses the set long-short term memory network model to predict the degradation rate and degradation degree of concrete structure performance for several set cycles based on the adjusted concrete structure performance degradation data according to the test, obtains several degradation degree values, and calculates the concrete structure performance degradation rate according to the change of the degradation degree values; then, based on the concrete structure performance degradation rate and several degradation degree values, according to the initial performance of the concrete structure, the ultimate service life of the concrete structure is calculated; finally, according to the ultimate service life, based on the designed objective function, the concrete maintenance management strategy is optimized.

[0108] The beneficial effect of the above technical solution is: by adopting the solution provided by this embodiment, by analyzing the durability of the concrete structure and optimizing the concrete maintenance management strategy, the pertinence and effectiveness of concrete inspection, maintenance and management can be guaranteed.

[0109] In one embodiment, according to the ultimate service life, the concrete maintenance management strategy is optimized based on the designed objective function, including:

[0110] Obtaining maintenance management priorities for the concrete pipe structure to be maintained based on the concrete structure performance degradation rate, several degradation degree values, and the ultimate service life of the concrete structure;

[0111] Determine the maintenance and management order of the concrete pipe structure to be maintained according to the maintenance and management priority;

[0112] With the goal of minimizing the total maintenance and management costs and the impact on the use of concrete pipes, the maintenance plan for the concrete pipes to be maintained is determined by constructing a concrete pipe maintenance and management model. The objective function of the concrete pipe maintenance and management model is:

[0113] MinG(X)=a1*P+a2*Q

[0114] Where MinG(X) represents the minimum function, G(X) represents the objective function, X represents the concrete pipe pile maintenance plan, P represents the total maintenance and management cost, a1 represents the weight coefficient of the total maintenance and management cost, Q represents the impact of concrete pipe use, and a2 represents the weight coefficient of the degradation degree value. The constraints of the concrete pipe maintenance and management model include: maintenance frequency constraint and cost constraint.

[0115] The impact of concrete pipe usage is determined based on the following steps:

[0116] Set up a corresponding matching relationship library between degradation degree values ​​and basic impacts of concrete pipe use;

[0117] Based on the degradation degree value, the basic impact degree of concrete pipe use is obtained by matching in the corresponding matching relationship library;

[0118] Based on the degradation rate of concrete structure performance, a first neural network probability prediction model is used to make a first prediction of the probability of a first change in the basic influence degree of concrete pipe use, thereby obtaining a first prediction result; the first change is that the floating value of the change in the basic influence degree of use is greater than a set floating threshold;

[0119] Based on the basic impact degree of concrete pipe use, using a second neural network probability prediction model, a second prediction is made on the situation of shortening the service life of the concrete structure affected by the basic impact degree of concrete pipe use to obtain a second prediction result;

[0120] If the probability value in the first prediction result is greater than the set first probability threshold, and the probability value in the second prediction result is greater than the set second probability threshold, the concrete pipe use influence is generated after adding a weight to the basic influence.

[0121] The working principle of the above technical solution is as follows: In order to optimize the concrete maintenance management strategy based on the ultimate service life and the designed objective function, the present invention first obtains the maintenance management priority of the concrete pipe structure to be maintained based on the degradation rate of the concrete structure performance, several degradation degree values, and the ultimate service life of the concrete structure; then, based on the maintenance management priority, the maintenance management order of the concrete pipe structure to be maintained is determined; finally, with the goal of minimizing the total maintenance management cost and the impact on the use of the concrete pipe as the goal, a maintenance plan for the concrete pipe to be maintained is determined by constructing a concrete pipe maintenance management model; the objective function of the concrete pipe maintenance management model is:

[0122] MinG(X)=a1*P+a2*Q

[0123] Where MinG(X) represents the minimum function, G(X) represents the objective function, X represents the concrete pipe pile maintenance plan, P represents the total maintenance and management cost, a1 represents the weight coefficient of the total maintenance and management cost, Q represents the impact of concrete pipe use, and a2 represents the weight coefficient of the degradation degree value. The constraints of the concrete pipe maintenance and management model include: maintenance frequency constraint and cost constraint.

[0124] The impact of concrete pipe usage is determined based on the following steps:

[0125] Set up a corresponding matching relationship library between degradation degree values ​​and basic impacts of concrete pipe use;

[0126] Based on the degradation degree value, the basic impact degree of concrete pipe use is obtained by matching in the corresponding matching relationship library;

[0127] Based on the degradation rate of concrete structure performance, a first neural network probability prediction model is used to make a first prediction of the probability of a first change in the basic influence degree of concrete pipe use, thereby obtaining a first prediction result; the first change is that the floating value of the change in the basic influence degree of use is greater than a set floating threshold;

[0128] Based on the basic impact degree of concrete pipe use, using a second neural network probability prediction model, a second prediction is made on the situation of shortening the service life of the concrete structure affected by the basic impact degree of concrete pipe use to obtain a second prediction result;

[0129] If the probability value in the first prediction result is greater than the set first probability threshold, and the probability value in the second prediction result is greater than the set second probability threshold, the concrete pipe use influence is generated after adding a weight to the basic influence.

[0130] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, the maintenance plan for the concrete pipe to be maintained is determined according to the maintenance management priority of the concrete pipe structure to be maintained and through the constructed concrete pipe maintenance management model, the accuracy of the maintenance plan can be guaranteed.

[0131] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A concrete anti-corrosion detection method based on a concrete pipe chloride corrosion model, characterized in that: include: Obtain seawater chloride ion concentration data in the target area and determine the chloride corrosion model for concrete pipes; According to the seawater chloride ion concentration data, the chloride corrosion model of concrete pipes was modified to obtain the modified chloride corrosion model of concrete pipes. Based on the revised concrete pipe chloride corrosion model, simulation experiments were conducted on the degradation of concrete structure performance and mechanical damage mechanism, and simulation experimental results were obtained; Based on the simulation test results, the durability of the concrete structure is analyzed and the concrete maintenance management strategy is optimized based on the analysis results; including: Acquire and adjust concrete structure performance degradation data according to simulation test results to obtain adjusted concrete structure performance degradation data; According to the adjusted concrete structure performance degradation data from the test, the long short-term memory network model is used to predict the degradation rate and degree of concrete structure performance for several set periods, and several degradation degree values ​​are obtained. The degradation rate of concrete structure performance is calculated based on the change of the degradation degree values; Based on the degradation rate of concrete structure performance and several degradation degree values, the ultimate service life of the concrete structure is calculated according to the initial performance of the concrete structure; Obtaining maintenance management priorities for the concrete pipe structure to be maintained based on the concrete structure performance degradation rate, several degradation degree values, and the ultimate service life of the concrete structure; Determine the maintenance and management order of the concrete pipe structure to be maintained according to the maintenance and management priority; With the goal of minimizing the total maintenance and management costs and the impact on the use of concrete pipes, the maintenance plan for the concrete pipes to be maintained is determined by constructing a concrete pipe maintenance and management model. The objective function of the concrete pipe maintenance and management model is: MinG(X)=a1*P+a2*Q Where MinG(X) represents the minimum function, G(X) represents the objective function, X represents the concrete pipe pile maintenance plan, P represents the total maintenance and management cost, a1 represents the weight coefficient of the total maintenance and management cost, Q represents the impact of concrete pipe use, and a2 represents the weight coefficient of the degradation degree value. The constraints of the concrete pipe maintenance and management model include: maintenance frequency constraint and cost constraint. The impact of concrete pipe usage is determined based on the following steps: Set up a corresponding matching relationship library between degradation degree values ​​and basic impacts of concrete pipe use; Based on the degradation degree value, the basic impact degree of concrete pipe use is obtained by matching in the corresponding matching relationship library; Based on the degradation rate of concrete structure performance, a first neural network probability prediction model is used to make a first prediction of the probability of a first change in the basic influence degree of concrete pipe use, thereby obtaining a first prediction result; the first change is that the floating value of the change in the basic influence degree of use is greater than a set floating threshold; Based on the basic impact degree of concrete pipe use, using a second neural network probability prediction model, a second prediction is made on the situation of shortening the service life of the concrete structure affected by the basic impact degree of concrete pipe use to obtain a second prediction result; If the probability value in the first prediction result is greater than the set first probability threshold, and the probability value in the second prediction result is greater than the set second probability threshold, the concrete pipe use influence is generated after adding a weight to the basic influence.

2. The concrete anti-corrosion detection method based on the concrete pipe chloride salt corrosion model according to claim 1 is characterized in that: Obtain seawater chloride ion concentration data for the target area and determine the chloride corrosion model for concrete pipes, including: Conduct field seawater sampling in the target area, measure chloride ion concentrations at different depths, and obtain seawater chloride ion concentration data for the target area; Based on the big data model library, the chloride corrosion model of concrete pipes is selected and determined.

3. The concrete anti-corrosion detection method based on the concrete pipe chloride corrosion model according to claim 1 is characterized in that: According to the seawater chloride ion concentration data, the chloride corrosion model of concrete pipes was modified to obtain the modified chloride corrosion model of concrete pipes, including: Based on seawater chloride ion concentration data, for concrete structures of different service years, different concrete strengths, different elevations, and different relative surfaces, several target analysis data on the change of chloride ion content with seawater depth are obtained; Using the concrete pipe chloride corrosion model, the target analysis data is analyzed and compared to obtain analysis and comparison results; According to the analysis and comparison results, the curve fitting technology was used to modify the parameters of the chloride corrosion model for concrete pipes and the modified chloride corrosion model for concrete pipes was obtained.

4. The concrete anti-corrosion detection method based on the concrete pipe chloride salt corrosion model according to claim 3 is characterized in that: According to the analysis and comparison results, the curve fitting technology is used to modify the parameters of the concrete pipe chloride corrosion model to obtain the modified concrete pipe chloride corrosion model, which also includes: Finite difference method is used to convert the modified chloride corrosion model of concrete pipe into a discrete object, and numerical calculation model programming is performed to obtain numerical calculation results. According to the numerical calculation results, by changing the model parameter values, the influence and importance of several parameters of the modified concrete pipe chloride corrosion model on the model accuracy are obtained.

5. The concrete anti-corrosion detection method based on the concrete pipe chloride corrosion model according to claim 1 is characterized in that: Based on the revised concrete pipe chloride corrosion model, simulation experiments were conducted on the degradation of concrete structure performance and mechanical damage mechanisms, and the simulation results obtained include: Set several load conditions; load conditions include shear, bending and compression bending of concrete structures; Based on the load conditions, the modified chloride corrosion model of concrete pipes was used to simulate the degradation of concrete structure performance and the degree of mechanical damage, and the simulation experimental results were obtained.

6. The concrete anti-corrosion detection method based on the concrete pipe chloride salt corrosion model according to claim 5 is characterized in that: Based on the load conditions, the modified chloride corrosion model for concrete pipes was used to simulate the degradation of concrete structure performance and the degree of mechanical damage. The simulation results include: Based on the load condition of shearing the concrete structure, the modified concrete pipe chloride corrosion model is used to conduct a first simulation experiment on the performance degradation of the concrete structure after shearing, and obtain the first simulation experiment data; Based on the load condition of bending the concrete structure, a second simulation experiment was conducted on the performance degradation of the concrete structure after bending using the modified chloride salt corrosion model of concrete pipes to obtain the second simulation experiment data; Based on the load conditions of concrete structure compression and bending, the modified chloride corrosion model of concrete pipe was used to conduct a third simulation experiment on the performance degradation of the concrete structure after compression and bending, and obtain the third simulation experiment data; The first simulation experiment data, the second simulation experiment data and the third simulation experiment data are integrated to obtain a simulation experiment result.

7. The concrete anti-corrosion detection method based on the concrete pipe chloride corrosion model according to claim 1 is characterized in that: According to the test results, the concrete structure performance degradation data is obtained and adjusted to obtain the adjusted concrete structure performance degradation data, including: Obtain concrete structure performance degradation data based on test results; Based on the decrease in model accuracy caused by the degradation of the modified concrete pipe chloride corrosion model, the concrete structure performance degradation data is adjusted according to the set adjustment strategy to obtain the adjusted concrete structure performance degradation data.

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