Concrete anti-erosion detection method based on concrete pipe chlorine salt erosion model

Abstract

The invention belongs to the technical field of concrete anti-erosion detection, and provides a concrete anti-erosion detection method based on a concrete pipe chlorine salt erosion model, and the method comprises the steps: obtaining seawater chloride ion concentration data of a target area, and determining the concrete pipe chlorine salt erosion model; according to the seawater chloride ion concentration data, correcting the concrete pipe chlorine salt erosion model to obtain a corrected concrete pipe chlorine salt erosion model; according to the corrected concrete pipe chlorine salt erosion model, performing a simulation experiment on the performance degradation and mechanical damage mechanism of the concrete structure to obtain a simulation experiment result; according to the simulation experiment result, the durability of the concrete structure is analyzed, and a concrete maintenance management strategy is optimized according to the analysis result. According to the method, the concrete pipe chlorine salt erosion model is utilized to perform concrete anti-erosion detection on the concrete pipe, so that the quality and effect of concrete anti-erosion detection can be improved, and the structural design and management maintenance level of the concrete pipe in a coastal complex environment can be improved.

Description

Technical Field

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

[0002] Steel tube concrete components are composed of steel and concrete. These two materials have a limited service life in a chloride salt corrosion environment and require high maintenance costs during service. At present, the research of the academic and engineering communities on the corrosion of reinforced concrete structures in a chloride ion corrosion environment is mainly focused on the material level and the component level. In these studies, experimental research methods are widely used in order to gain a deeper understanding of the corrosion mechanism of chloride ions on reinforced concrete structures. However, there is a lack of scientific and accurate statistical analysis on the corrosion of reinforced concrete caused by chloride ions, which leads to insufficient quality and effect of the detection, affecting the construction design of concrete pipe piles in the salt sea environment.

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

[0004] The present invention provides a concrete anti-corrosion detection method based on a concrete pipe chloride salt corrosion model. By utilizing the concrete pipe chloride salt corrosion model, concrete anti-corrosion detection is performed on concrete pipes, which can improve the quality and effect of concrete anti-corrosion detection and help improve the level of concrete pipe structure 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 salt corrosion model, comprising:

[0006] Obtain seawater chloride 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 pipe is modified to obtain the modified chloride corrosion model of concrete pipe;

[0008] According to the modified chloride corrosion model of concrete pipe, 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 the chloride corrosion model of the concrete pipe is determined, including:

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

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

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

[0014] According to the seawater chloride ion concentration data, for concrete structures of different service life, different concrete strength, different elevations and different relative surfaces, several target analysis data of the corresponding chloride ion content changing with seawater depth are obtained;

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

[0016] According to the analysis and comparison results, the curve fitting technology is used to correct the parameters of the chloride corrosion model of concrete pipes, and the corrected chloride corrosion model of concrete pipes is obtained.

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

[0018] The modified chloride corrosion model of concrete pipe is converted into a discrete object by using the finite difference method, and the numerical calculation model is programmed to obtain the 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 modified 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, including:

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

[0022] Based on the load conditions, the modified chloride corrosion model of concrete pipe 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 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, including:

[0024] Based on the load condition of shearing the concrete structure, the first simulation experiment is conducted on the performance degradation of the concrete structure after shearing using the modified chloride salt corrosion model of concrete pipe, and the first simulation experiment data is obtained;

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

[0026] Based on the load condition of bending the concrete structure, the third simulation experiment is conducted on the performance degradation of the concrete structure after bending using the modified concrete pipe chloride corrosion model to obtain the third simulation experiment data;

[0027] The simulation experiment results are obtained by integrating the first simulation experiment data, the second simulation experiment data and the third simulation experiment data.

[0028] Furthermore, 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:

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

[0032] Based on the test results, the performance degradation data of the concrete structure is obtained;

[0033] Based on the decrease in model accuracy caused by the model 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 speed 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, and the degradation speed of the concrete structure performance is calculated based on the change of 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, according to the ultimate service life and based on the designed objective function, the concrete maintenance management strategy is optimized, including:

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

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

[0041] With the goal of minimizing the total maintenance cost 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 management model; the objective function of the concrete pipe maintenance management model is:

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

[0043] Among them, 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 management cost, a1 represents the weight coefficient of the total maintenance management cost, Q represents the influence of concrete pipe use, and a2 represents the weight coefficient of the degradation degree value; the constraints of the concrete pipe maintenance management model include: maintenance frequency constraint and cost constraint;

[0044] Among them, the impact of concrete pipe use is determined based on the following steps:

[0045] A corresponding matching relationship library is set between the degradation degree value and the basic influence degree of concrete pipe use;

[0046] Based on the degradation degree value, the basic influence 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 on the probability of a first change in the basic influence degree of concrete pipe use, and a first prediction result is obtained; the first change is that the floating value of the use influence degree change is greater than the set floating threshold;

[0048] Based on the basic influence degree of concrete pipe use, using the 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 influence 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 prior art, the present invention has the following advantages and beneficial effects: by using the chloride 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 is helpful 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 partly become apparent from the description, or 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 It is a schematic diagram of the steps of the concrete anti-corrosion 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 of concrete structure performance and mechanical damage mechanism based on the revised chloride corrosion model for concrete pipes and obtaining the simulation experimental results. DETAILED DESCRIPTION

[0057] The preferred embodiments of the present invention are described below in conjunction with 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 anti-corrosion detection method based on a concrete pipe chloride salt corrosion model, such as Figure 1 As shown, including:

[0059] Obtain seawater chloride 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 pipe is modified to obtain the modified chloride corrosion model of concrete pipe;

[0061] According to the modified chloride corrosion model of concrete pipe, 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 realize the concrete anti-corrosion detection method based on the chloride corrosion model of concrete pipes, the present invention first obtains the seawater chloride ion concentration data of the target area and determines the chloride corrosion model of the concrete pipe; then, according to the seawater chloride ion concentration data, the chloride corrosion model of the concrete pipe is corrected to obtain the corrected chloride corrosion model of the concrete pipe; then, according to the corrected chloride corrosion model of the concrete pipe, the performance degradation and mechanical damage mechanism of the concrete structure are simulated and the simulation results are obtained; finally, according to the simulation results, the durability of the concrete structure is analyzed, and the concrete maintenance management strategy is optimized according to 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, concrete anti-corrosion detection is carried out on concrete pipes, which can improve the quality and effect of concrete anti-corrosion detection, and help 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 seawater environment of the target area, measure the chloride ion concentration at different depths, and obtain the seawater chloride ion concentration data of 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: 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, selects and determines the chloride salt corrosion model of the concrete pipe.

[0069] The beneficial effect of the above technical solution is: by adopting the solution provided in 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 the seawater chloride ion concentration data to obtain a modified concrete pipe chloride corrosion model, including:

[0071] According to the seawater chloride ion concentration data, for concrete structures of different service life, different concrete strength, different elevations and different relative surfaces, several target analysis data of the corresponding chloride ion content changing with seawater depth are obtained;

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

[0073] According to the analysis and comparison results, the curve fitting technology is used to correct the parameters of the chloride corrosion model of concrete pipes, and the corrected chloride corrosion model of concrete pipes is obtained.

[0074] The working principle of the above technical solution is: in order to correct the chloride corrosion model of concrete pipes according to the seawater chloride ion concentration data and obtain the corrected chloride corrosion model of concrete pipes, the present invention first obtains several target analysis data of the corresponding chloride ion content changing with the seawater depth for concrete structures with different service life, different concrete strength, different elevation and different relative surfaces according to the seawater chloride ion concentration data; then, the target analysis data are analyzed and compared by using the chloride corrosion model of concrete pipes to obtain the analysis and comparison results; finally, according to the analysis and comparison results, the curve fitting technology is used to correct the parameters of the chloride corrosion model of concrete pipes to obtain the corrected chloride corrosion model of 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 the concrete pipe is corrected according to the seawater chloride ion concentration data, and the corrected chloride corrosion model of the concrete pipe is obtained, which can provide a basis for subsequent detection.

[0076] In one embodiment, according to 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 also includes:

[0077] The modified chloride corrosion model of concrete pipe is converted into a discrete object by using the finite difference method, and the numerical calculation model is programmed to obtain the 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: in order to improve the quality of the modified concrete pipe chloride corrosion model, the present invention first adopts the finite difference method to convert the modified concrete pipe chloride corrosion model into a discrete object, and performs numerical calculation model programming to obtain numerical calculation results; then according to the numerical calculation results, by changing the model parameter value calculation analysis, the influence and importance of several parameters of the modified concrete pipe chloride corrosion model on the corresponding model accuracy are obtained.

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

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

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

[0083] Based on the load conditions, the modified chloride corrosion model of concrete pipe 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: in order to simulate the performance degradation and mechanical damage mechanism of the concrete structure and obtain the simulation experiment results, the present invention first sets a number of 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 the simulation experiment 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, the modified chloride corrosion model of concrete pipe is used to simulate the degradation of concrete structure performance and the degree of mechanical damage, and the simulation test results are obtained, including:

[0087] Based on the load condition of shearing the concrete structure, the first simulation experiment is conducted on the performance degradation of the concrete structure after shearing using the modified chloride salt corrosion model of concrete pipe, and the first simulation experiment data is obtained;

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

[0089] Based on the load condition of bending the concrete structure, the third simulation experiment is conducted on the performance degradation of the concrete structure after bending using the modified concrete pipe chloride corrosion model to obtain the third simulation experiment data;

[0090] The simulation experiment results are obtained by integrating the first simulation experiment data, the second simulation experiment data and the third simulation experiment data.

[0091] The working principle of the above technical solution is: 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 firstly performs a first simulation experiment on the performance degradation of the concrete structure after shearing based on the load condition of the concrete structure, using the modified concrete pipe chloride salt corrosion model, and obtains the first simulation experiment data; then, based on the load condition of bending of the concrete structure, using the modified concrete pipe chloride salt corrosion model, performs a second simulation experiment on the performance degradation of the concrete structure after bending, and obtains the second simulation experiment data; then, based on the load condition of compression and bending of the concrete structure, using the modified concrete pipe chloride salt corrosion model, performs a third simulation experiment on the performance degradation of the concrete structure after compression and bending, and obtains the third simulation experiment data; finally, the first simulation experiment data, the second simulation experiment data and the third simulation experiment data are integrated to obtain the simulation experiment results.

[0092] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, different simulation experiments are carried out based on different load conditions, so as to improve the accuracy of the simulation experiment results.

[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] According to 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 according to the analysis results, the present invention first obtains and adjusts the concrete structure performance degradation data according to 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 according to 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, based on the test results, the concrete structure performance degradation data is acquired and adjusted to obtain the adjusted concrete structure performance degradation data, including:

[0099] Based on the test results, the performance degradation data of the concrete structure is obtained;

[0100] Based on the decrease in model accuracy caused by the model 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: 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 according to the test results; then based on the decrease in model accuracy caused by the model 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.

[0102] The beneficial effect of the above technical solution is: by adopting the solution provided in 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, 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, including:

[0104] According to the adjusted concrete structure performance degradation data from the test, the degradation speed 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, and the degradation speed of the concrete structure performance is calculated based on the change of 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 predicts the degradation rate and degree of concrete structure performance for several set cycles based on the performance degradation data of concrete structures adjusted according to the test, using the set long short-term memory network model, and obtains several degradation degree values, and calculates the degradation rate of concrete structure performance according to the change of the degradation degree values; then, based on the degradation rate of concrete structure performance 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 in 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 ensured.

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

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

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

[0112] With the goal of minimizing the total maintenance cost 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 management model; the objective function of the concrete pipe maintenance management model is:

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

[0114] Among them, 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 management cost, a1 represents the weight coefficient of the total maintenance management cost, Q represents the influence of concrete pipe use, and a2 represents the weight coefficient of the degradation degree value; the constraints of the concrete pipe maintenance management model include: maintenance frequency constraint and cost constraint;

[0115] Among them, the impact of concrete pipe use is determined based on the following steps:

[0116] A corresponding matching relationship library is set between the degradation degree value and the basic influence degree of concrete pipe use;

[0117] Based on the degradation degree value, the basic influence 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 on the probability of a first change in the basic influence degree of concrete pipe use, and a first prediction result is obtained; the first change is that the floating value of the use influence degree change is greater than the set floating threshold;

[0119] Based on the basic influence degree of concrete pipe use, using the 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 influence 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 according to the ultimate service life and based on the designed objective function, the present invention first obtains the maintenance management priority of the concrete pipe structure to be maintained according to the degradation rate of the concrete structure performance, several degradation degree values ​​and the ultimate service life of the concrete structure; then determines the maintenance management order of the concrete pipe structure to be maintained according to the maintenance management priority; finally, with the goal of minimizing the total maintenance management cost and minimizing the impact on the use of the concrete pipe, the maintenance plan of the concrete pipe to be maintained is determined through the constructed concrete pipe maintenance management model; the objective function of the concrete pipe maintenance management model is:

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

[0123] Among them, 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 management cost, a1 represents the weight coefficient of the total maintenance management cost, Q represents the influence of concrete pipe use, and a2 represents the weight coefficient of the degradation degree value; the constraints of the concrete pipe maintenance management model include: maintenance frequency constraint and cost constraint;

[0124] Among them, the impact of concrete pipe use is determined based on the following steps:

[0125] A corresponding matching relationship library is set between the degradation degree value and the basic influence degree of concrete pipe use;

[0126] Based on the degradation degree value, the basic influence 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 on the probability of a first change in the basic influence degree of concrete pipe use, and a first prediction result is obtained; the first change is that the floating value of the use influence degree change is greater than the set floating threshold;

[0128] Based on the basic influence degree of concrete pipe use, using the 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 influence 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 can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A concrete anti-corrosion detection method based on a concrete pipe chloride corrosion model, characterized in that: include: Obtain seawater chloride 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 pipe is modified to obtain the modified chloride corrosion model of concrete pipe; According to the modified chloride corrosion model of concrete pipe, 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.

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 concentration data for the target area and determine the chloride corrosion model for concrete pipes, including: Conduct field seawater sampling in the seawater environment of the target area, measure the chloride ion concentration at different depths, and obtain the seawater chloride ion concentration data of 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 salt 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 is modified to obtain the modified chloride corrosion model of concrete pipes, including: According to the seawater chloride ion concentration data, for concrete structures of different service life, different concrete strength, different elevations and different relative surfaces, several target analysis data of the corresponding chloride ion content changing with seawater depth are obtained; Using the concrete pipe chloride corrosion model, the target analysis data is analyzed and compared to obtain the analysis and comparison results; According to the analysis and comparison results, the curve fitting technology is used to correct the parameters of the chloride corrosion model of concrete pipes, and the corrected chloride corrosion model of concrete pipes is 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: The modified chloride corrosion model of concrete pipe is converted into a discrete object by using the finite difference method, and the numerical calculation model is programmed to obtain the 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 salt corrosion model according to claim 1 is characterized in that: 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 simulation experimental results were obtained, including: Set several load conditions; the load conditions include shear, bending and compression bending of the concrete structure; Based on the load conditions, the modified chloride corrosion model of concrete pipe 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 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, including: Based on the load condition of shearing the concrete structure, the first simulation experiment is conducted on the performance degradation of the concrete structure after shearing using the modified concrete pipe chloride salt corrosion model to obtain the first simulation experiment data; Based on the load condition of bending the concrete structure, a second simulation experiment is conducted on the performance degradation of the concrete structure after bending using the modified chloride salt corrosion model of the concrete pipe to obtain the second simulation experiment data; Based on the load condition of bending the concrete structure, the third simulation experiment is conducted on the performance degradation of the concrete structure after bending using the modified concrete pipe chloride salt corrosion model to obtain the third simulation experiment data; The simulation experiment results are obtained by integrating the first simulation experiment data, the second simulation experiment data and the third simulation experiment data.

7. The concrete anti-corrosion detection method based on the concrete pipe chloride salt corrosion model according to claim 1 is characterized in that: 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: According to the test results, the concrete structure performance degradation data is obtained and adjusted to obtain the adjusted concrete structure performance degradation data; According to 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.

8. The concrete anti-corrosion detection method based on the concrete pipe chloride salt corrosion model according to claim 7 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: Based on the test results, the performance degradation data of the concrete structure is obtained; Based on the decrease in model accuracy caused by the model 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.

9. The concrete anti-corrosion detection method based on the concrete pipe chloride salt corrosion model according to claim 7 is characterized in that: According to 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, including: According to the adjusted concrete structure performance degradation data from the test, the degradation speed 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, and the degradation speed of the 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; According to the ultimate service life, the concrete maintenance management strategy is optimized based on the designed objective function.

10. The concrete anti-corrosion detection method based on the concrete pipe chloride salt corrosion model according to claim 9, characterized in that: According to the ultimate service life, based on the design objective function, the concrete maintenance management strategy is optimized, including: Obtaining maintenance management priorities of the concrete pipe structure to be maintained according to the degradation rate of concrete structure performance, several degradation degree values ​​and the ultimate service life of the concrete structure; Determine the maintenance and management sequence of the concrete pipe structure to be maintained according to the maintenance and management priority; With the goal of minimizing the total maintenance cost 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 management model; the objective function of the concrete pipe maintenance management model is: MinG(X)=a1*P+a2*Q Among them, 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 management cost, a1 represents the weight coefficient of the total maintenance management cost, Q represents the influence of concrete pipe use, and a2 represents the weight coefficient of the degradation degree value; the constraints of the concrete pipe maintenance management model include: maintenance frequency constraint and cost constraint; Among them, the impact of concrete pipe use is determined based on the following steps: Set the corresponding matching relationship library between the degradation degree value and the basic influence degree of concrete pipe use; Based on the degradation degree value, the basic influence 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 on the probability of a first change in the basic influence degree of concrete pipe use, and a first prediction result is obtained; the first change is that the floating value of the change in the use influence degree is greater than the set floating threshold; Based on the basic influence degree of concrete pipe use, using the 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 influence 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.

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