Method for determining safety degree of dam structure in operation period of hydropower station and related device

Abstract

The invention provides a method for determining the safety degree of a dam structure in the operation period of a hydropower station and a related device, and belongs to the dam safety monitoring technology. The method comprises the following steps: determining a concrete safety coefficient and a steel bar safety coefficient based on preprocessed concrete parameters and steel bar parameters of a target monitoring point; when the concrete parameter and the steel bar parameter of the target monitoring point after temperature compensation correction are greater than or equal to the yield strength of the concrete and the steel bar with a set multiple, early warning is carried out; when the concrete parameter and the steel bar parameter of the target monitoring point after the temperature compensation correction are smaller than the yield strength of the concrete and the steel bar with a set multiple, calculating the equivalent strength and the steel bar accumulated damage index under the concrete multi-axial stress; and based on the concrete safety coefficient, the steel bar safety coefficient, the equivalent strength under the concrete multi-axial stress and the steel bar accumulated damage index, judging whether the dam measuring point has abnormal hidden dangers or not. The problem that the accuracy of determining the safety degree of the dam structure in the operation period of the hydropower station is not high is solved.

Description

Technical Field

[0001] This invention belongs to the field of dam safety monitoring technology, specifically relating to a method and related device for determining the structural safety of a dam during the operation of a hydropower station. Background Technology

[0002] Analyzing monitoring data is currently the primary method for ensuring dam structural safety. This involves establishing a dam structural safety calculation model, using sensors such as displacement gauges and piezometers to monitor data in real time, and then analyzing the data using statistical and parametric inversion methods to correct the theoretical model and identify anomalies. However, this method based on monitoring data has the following limitations: 1. Sensor deployment has blind spots, making it difficult to fully capture potential weak points (such as hidden defects in dam foundations), and is easily affected by environmental interference (such as temperature, humidity and electromagnetic noise), which can lead to data drift or distortion, thus limiting data acquisition.

[0003] 2. Statistical methods and parameter inversion methods rely on prior assumptions. If the model is not properly simplified or the coupling effect of multiple factors (such as seepage-stress interaction) is not considered, it is easy to lead to misjudgment.

[0004] 3. Monitoring data reflects structural responses that have already occurred, making it difficult to provide timely warnings of sudden damage (such as instantaneous earthquake damage). Furthermore, anomaly identification relies on threshold settings, resulting in insufficient early sensitivity to gradual damage, exhibiting a lag and reactive nature. Long-term monitoring requires regular equipment calibration and system updates, necessitating significant investment of manpower and funds.

[0005] For example, patent application CN117522128A discloses a method for calculating the safety risk value during the operation of a concrete gravity dam. Although this method can provide a comprehensive quantitative evaluation of the dam's operational safety status and effectively support intelligent management and precise decision-making for engineering safety, it relies on historical data and expert experience. It can only analyze based on existing knowledge and cannot reflect the actual changes of the dam over time. The longer the analysis period, the greater the error, resulting in low accuracy in determining the structural safety of the dam during the operation of the hydropower station. Summary of the Invention

[0006] The purpose of this invention is to provide a method and related apparatus for determining the structural safety of a dam during the operation of a hydropower station, in order to solve the problem of low accuracy in determining the structural safety of a dam during the operation of a hydropower station in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a method for determining the structural safety of a dam during the operation of a hydropower station, comprising the following steps: Obtain concrete and steel reinforcement parameters at the target monitoring points; The concrete and steel parameters of the target monitoring points are preprocessed to obtain the preprocessed concrete and steel parameters of the target monitoring points. The preprocessing refers to filtering first and then temperature compensation correction. Based on the pre-processed concrete and steel parameters of the target monitoring points, the concrete safety factor and the steel safety factor are determined. An early warning is issued when the concrete and steel reinforcement parameters at the target monitoring point, after temperature compensation correction, are greater than or equal to the set multiple of the concrete and steel reinforcement yield strength. When the concrete and steel parameters of the target monitoring point after temperature compensation correction are less than the yield strength of concrete and steel by a set multiple, calculate the equivalent strength of concrete under multiaxial stress and the cumulative damage index of steel. Based on the safety factor of concrete, the safety factor of steel reinforcement, the equivalent strength of concrete under multiaxial stress, and the cumulative damage index of steel reinforcement, it is determined whether there are any abnormal hidden dangers at the dam monitoring points.

[0008] A further improvement of this invention is that the calculation formula for temperature compensation correction of the concrete parameters at the target monitoring point is as follows:

[0009] in, The concrete parameters at the target monitoring point after temperature compensation correction. These are the concrete parameters of the target monitoring point after filtering. This refers to the elastic modulus of concrete. This is the coefficient of thermal expansion of concrete. The real-time temperature of the target monitoring point. For reference temperature; The calculation formula for temperature compensation correction of the reinforcement parameters at the target monitoring point is as follows:

[0010] in, The rebar parameters for the target monitoring points after temperature compensation correction. These are the concrete parameters of the target monitoring point after filtering. This refers to the elastic modulus of the reinforcing steel. The coefficient of thermal expansion of the steel reinforcement is... The real-time temperature of the target monitoring point. This is a reference temperature.

[0011] A further improvement of this invention is that the formula for calculating the safety factor of concrete is:

[0012] in, For the safety factor of concrete, The yield strength of concrete. The concrete parameters at the target monitoring point after temperature compensation correction.

[0013] A further improvement of this invention is that the formula for calculating the safety factor of the reinforcing steel is:

[0014] in, For the safety factor of the reinforcing steel, The yield strength of the steel reinforcement. The steel reinforcement parameters of the target monitoring point after temperature compensation correction.

[0015] A further improvement of this invention is that the formula for calculating the equivalent strength of concrete under multiaxial stress is as follows:

[0016] in, This represents the equivalent strength of concrete under multiaxial stress. For the second deviatoric stress invariant, The first material constant, This is the first stress invariant; Second deviatoric stress invariant The calculation formula is:

[0017] in, , and These represent the three directional components of stress; First stress invariant The calculation formula is: .

[0018] A further improvement of this invention is that the formula for calculating the cumulative damage index of reinforcing bars is:

[0019] in, The cumulative damage index of steel bars. The fatigue life of the material under the current stress level. For the first The duration of action at each stress level For the first The magnitude of the stress, This represents the total amount of stress.

[0020] A further improvement of this invention is that the determination of whether there are any abnormal potential hazards at the dam monitoring points specifically includes: When the safety factor of concrete is less than the first set threshold or the safety factor of steel reinforcement is less than the second set threshold, it indicates that there is a minor abnormality or potential danger at the dam's measuring point. When the safety factor of concrete is less than the set third threshold or the safety factor of steel reinforcement is less than the set fourth threshold, it indicates that there is a serious abnormality or hidden danger at the dam measuring point. When the equivalent strength of concrete under multiaxial stress exceeds the set fifth threshold, it indicates that there is an abnormal potential at the dam's measuring point. When the cumulative damage index of the reinforcing steel is greater than or equal to the set sixth threshold, it indicates that there is an abnormal potential hazard at the dam's measuring point.

[0021] Secondly, the present invention provides a system for determining the structural safety of a hydropower station during operation, including a data acquisition module, a data preprocessing module, a safety factor determination module, an early warning module, a parameter determination module, and a hidden danger judgment module; The data acquisition module is used to acquire concrete parameters and steel reinforcement parameters at the target monitoring points; The data preprocessing module is used to preprocess the concrete parameters and steel reinforcement parameters of the target monitoring points to obtain the preprocessed concrete parameters and steel reinforcement parameters of the target monitoring points. The preprocessing refers to filtering first, and then temperature compensation correction after filtering. The safety factor determination module is used to determine the concrete safety factor and the steel reinforcement safety factor based on the pre-processed concrete and steel reinforcement parameters of the target monitoring points. The early warning module is used to issue an early warning when the concrete parameters and steel reinforcement parameters of the target monitoring point after temperature compensation correction are greater than or equal to the yield strength of concrete and steel reinforcement by a set multiple. The parameter determination module is used to calculate the equivalent strength of concrete under multiaxial stress and the cumulative damage index of steel reinforcement when the concrete parameters and steel reinforcement parameters of the target monitoring point after temperature compensation correction are less than the yield strength of concrete and steel reinforcement by a set multiple. The hazard assessment module is used to determine whether there are any abnormal hazards at the dam's measuring points based on the concrete safety factor, the steel reinforcement safety factor, the equivalent strength of the concrete under multiaxial stress, and the cumulative damage index of the steel reinforcement.

[0022] Thirdly, the present invention provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the method for determining the structural safety of a dam during the operation of a hydropower station as described above.

[0023] Fourthly, the present invention provides a storage medium storing a computer program thereon, wherein the computer program, when executed by a processor, implements the steps of the method for determining the structural safety of a dam during the operation of a hydropower station as described above.

[0024] Compared with the prior art, the present invention has the following beneficial effects: The proposed method for determining the structural safety of a hydropower station dam during its operational period involves two aspects. First, when the steel reinforcement parameters at the target monitoring point, after temperature compensation correction, are less than a set multiple of the steel reinforcement's yield strength, the cumulative steel reinforcement damage index is calculated. This index allows for high-precision analysis of the fatigue degradation process under cyclic loading, thereby enabling life prediction. Second, based on the concrete safety factor, steel reinforcement safety factor, equivalent strength of concrete under multiaxial stress, and the cumulative steel reinforcement damage index, the method determines whether any abnormal hazards have appeared at the dam monitoring points. These data—concrete safety factor, steel reinforcement safety factor, equivalent strength of concrete under multiaxial stress, and cumulative steel reinforcement damage index—are highly objective, reducing errors from subjective human judgment and improving the accuracy of determining whether abnormal hazards have appeared at the dam monitoring points (determining the safety of the dam structure during the hydropower station's operational period). This effectively solves the problem of low accuracy in determining the structural safety of a hydropower station dam during its operational period in existing technologies. Attached Figure Description

[0025] Figure 1 This is a flowchart of the method for determining the structural safety of a hydropower station during operation, as described in this invention. Figure 2 This is a schematic diagram of the system for determining the structural safety of a hydropower station during operation, as described in this invention. Figure 3 This is a schematic diagram of the structure of the electronic device of the present invention. Detailed Implementation

[0026] To further understand the content of this invention, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0027] The present invention proposes a method for determining the structural safety of a hydropower station dam during its operational period. Based on the concrete safety factor, the steel reinforcement safety factor, the equivalent strength of concrete under multiaxial stress, and the cumulative damage index of the steel reinforcement, it determines whether any abnormal hazards have appeared at the dam's measuring points. Compared to existing technologies, this invention effectively solves the problem of low accuracy in determining the structural safety of a hydropower station dam during its operational period.

[0028] Example 1: The flowchart of the method for determining the structural safety of a hydropower station during operation is shown below. Figure 1 As shown, the method for determining the structural safety of a hydropower station during its operation includes the following steps: S1. Obtain concrete and steel reinforcement parameters at the target monitoring points; S2. Preprocess the concrete and steel parameters of the target monitoring point to obtain the preprocessed concrete and steel parameters of the target monitoring point. The preprocessing refers to filtering first and then temperature compensation correction after filtering. S3. Based on the preprocessed concrete and steel reinforcement parameters of the target monitoring points, determine the concrete safety factor and the steel reinforcement safety factor; S4. When the concrete and steel parameters of the target monitoring point after temperature compensation correction are greater than or equal to the yield strength of concrete and steel by a set multiple, an early warning will be issued; S5. When the concrete and steel parameters of the target monitoring point after temperature compensation correction are less than the yield strength of concrete and steel by a set multiple, calculate the equivalent strength of concrete under multiaxial stress and the cumulative damage index of steel. S6. Based on the concrete safety factor, the steel reinforcement safety factor, the equivalent strength of concrete under multiaxial stress, and the cumulative damage index of steel reinforcement, determine whether there are any abnormal hidden dangers at the dam measuring points.

[0029] Example 2: A schematic diagram of the system for determining the structural safety of a hydropower station during operation is shown below. Figure 2 As shown, the dam structure safety determination system for hydropower station operation period of the present invention includes a data acquisition module, a data preprocessing module, a safety factor determination module, an early warning module, a parameter determination module, and a hidden danger judgment module.

[0030] The data acquisition module is used to acquire concrete and steel reinforcement parameters at the target monitoring points.

[0031] The data preprocessing module is used to preprocess the concrete and steel parameters of the target monitoring points to obtain the preprocessed concrete and steel parameters of the target monitoring points. The preprocessing refers to filtering first, followed by temperature compensation correction.

[0032] The safety factor determination module is used to determine the concrete safety factor and the steel reinforcement safety factor based on the pre-processed concrete and steel reinforcement parameters of the target monitoring points.

[0033] The early warning module is used to issue an early warning when the concrete and steel reinforcement parameters at the target monitoring point after temperature compensation correction are greater than or equal to the set multiple of the yield strength of concrete and steel reinforcement.

[0034] The parameter determination module is used to calculate the equivalent strength of concrete under multiaxial stress and the cumulative damage index of steel reinforcement when the concrete and steel reinforcement parameters of the target monitoring point after temperature compensation correction are less than the yield strength of concrete and steel reinforcement by a set multiple.

[0035] The hazard assessment module is used to determine whether there are any abnormal hazards at the dam's measuring points based on the concrete safety factor, the steel reinforcement safety factor, the equivalent strength of concrete under multiaxial stress, and the cumulative damage index of the steel reinforcement.

[0036] Example 3: The method for determining the structural safety of a hydropower station during its operation, as described in this invention, includes the following steps: S1. Obtain the concrete and steel reinforcement parameters of the target monitoring point.

[0037] First, obtain the concrete and steel reinforcement parameters of the target monitoring points from the construction acceptance report.

[0038] Concrete parameters at the target monitoring points include compressive strength. (compressive strength) The magnitude represents stress and elastic modulus. Compared to Poisson .

[0039] The steel reinforcement parameters at the target monitoring point include yield strength. (Yield strength) The magnitude represents stress and elastic modulus. Cross-sectional area and reinforcement ratio .

[0040] S2. Preprocess the obtained concrete and steel reinforcement parameters of the target monitoring points to obtain the preprocessed concrete and steel reinforcement parameters of the target monitoring points.

[0041] The concrete and steel parameters of the target monitoring points are preprocessed to obtain the preprocessed concrete and steel parameters of the target monitoring points. Preprocessing refers to filtering first, followed by temperature compensation correction.

[0042] The formula for calculating the filter in this step is:

[0043] in, These are the filtered concrete and steel reinforcement parameters for the target monitoring points. DWT stands for Discrete Wavelet Transform. The original concrete and steel reinforcement parameters for the target monitoring points.

[0044] The calculation formula for temperature compensation correction of concrete parameters at the target monitoring point is as follows:

[0045] in, The concrete parameters at the target monitoring point after temperature compensation correction. These are the concrete parameters of the target monitoring point after filtering. This refers to the elastic modulus of concrete. This is the coefficient of thermal expansion of concrete. The real-time temperature of the target monitoring point. This is a reference temperature.

[0046] The calculation formula for temperature compensation correction of the reinforcement parameters at the target monitoring point is as follows:

[0047] in, The rebar parameters for the target monitoring points after temperature compensation correction. These are the concrete parameters of the target monitoring point after filtering. This refers to the elastic modulus of the reinforcing steel. The coefficient of thermal expansion of the steel reinforcement is... The real-time temperature of the target monitoring point. This is a reference temperature.

[0048] S3. Based on the preprocessed concrete and steel reinforcement parameters of the target monitoring points, determine the concrete safety factor and the steel reinforcement safety factor.

[0049] The formula for calculating the safety factor of concrete is:

[0050] in, For the safety factor of concrete, The yield strength of concrete. The concrete parameters at the target monitoring point after temperature compensation correction.

[0051] The formula for calculating the safety factor of reinforcing steel is:

[0052] in, For the safety factor of the reinforcing steel, The yield strength of the steel reinforcement. The steel reinforcement parameters of the target monitoring point after temperature compensation correction.

[0053] S4. When the concrete and steel parameters of the target monitoring point after temperature compensation correction are greater than or equal to the set multiple of the yield strength of concrete and steel, an early warning will be issued.

[0054] Specifically, when the concrete parameters (compressive strength) of the target monitoring point are corrected for temperature compensation... An early warning is issued when the yield strength of concrete is greater than or equal to a set multiple (0.85 in this embodiment) of the concrete.

[0055] When the steel reinforcement parameters (yield strength) of the target monitoring point are corrected for temperature compensation An early warning is issued when the yield strength of the steel bar (the size of which is greater than or equal to a set multiple (0.9 in this embodiment) is greater than or equal to that of the steel bar.

[0056] S5. When the concrete and steel parameters of the target monitoring point after temperature compensation correction are less than the yield strength of concrete and steel by a set multiple, determine the equivalent strength of concrete under multiaxial stress and the cumulative damage index of steel.

[0057] Specifically, when the concrete parameters (compressive strength) of the target monitoring point are corrected for temperature compensation... When the yield strength of concrete is less than a set multiple (0.85 in this embodiment), the equivalent strength of concrete under multiaxial stress is calculated.

[0058] When the steel reinforcement parameters (yield strength) of the target monitoring point are corrected for temperature compensation When the yield strength of a steel bar whose size is less than a set multiple (0.9 in this embodiment) is less than the set multiple, the cumulative damage index of the steel bar is calculated.

[0059] The formula for calculating the equivalent strength of concrete under multiaxial stress is as follows:

[0060] in, Multiaxial stress of concrete (also called compressive strength) The equivalent strength under the size), For the second deviatoric stress invariant, The first material constant, This is the first stress invariant.

[0061] Second deviatoric stress invariant The calculation formula is:

[0062] in, , and These represent the three directional components of stress.

[0063] First stress invariant The calculation formula is:

[0064] The formula for calculating the cumulative damage index of reinforcing bars is:

[0065] in, The cumulative damage index of steel bars. The current stress (also called yield strength) The fatigue life of materials at the size level. For the first The duration of action at each stress level For the first The magnitude of the stress, This represents the total amount of stress.

[0066] S6. Based on the concrete safety factor, the steel reinforcement safety factor, the equivalent strength of concrete under multiaxial stress, and the cumulative damage index of steel reinforcement, determine whether there are any abnormal hidden dangers at the dam measuring points.

[0067] This step involves determining whether any abnormal or potential hazards have been detected at the dam's monitoring points. Specifically, this includes: When the safety factor of concrete is less than the first threshold (the first threshold set in this embodiment is 2.0) or the safety factor of steel reinforcement is less than the second threshold (the second threshold set in this embodiment is 1.5), it indicates that there is a slight abnormality at the dam measuring point, and a first-level warning is issued.

[0068] When the safety factor of concrete is less than the set third threshold (the third threshold set in this embodiment is 1.5) or the safety factor of steel reinforcement is less than the set fourth threshold (the third threshold set in this embodiment is 1.2), it indicates that there is a serious abnormality at the dam monitoring point, and a level II warning is issued.

[0069] When the equivalent strength of concrete under multiaxial stress is greater than the set fifth threshold (in this embodiment, the fifth threshold is k, where k is a material constant, which is used to reflect the compressive strength of concrete and is determined according to the type of concrete), it indicates that there is an abnormal potential problem at the dam measuring point.

[0070] When the cumulative damage index of the reinforcing steel is greater than or equal to the set sixth threshold (the sixth threshold set in this embodiment is 1), it indicates that there is an abnormal potential hazard at the dam measuring point.

[0071] Example 4: Please see Figure 3 As shown, the present invention also provides an electronic device 100 for determining the structural safety of a dam during the operation of a hydropower station; the electronic device 100 includes a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on the at least one processor 102, and at least one communication bus 104.

[0072] The memory 101 can be used to store the computer program 103. The processor 102 implements the steps of the method for determining the structural safety of a hydropower station during operation as described in Embodiment 2 by running or executing the computer program stored in the memory 101 and calling the data stored in the memory 101. The memory 101 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created based on the use of the electronic device 100 (such as audio data), etc. In addition, the memory 101 may include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0073] The at least one processor 102 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 102 may be a microprocessor or any conventional processor. The processor 102 is the control center of the electronic device 100, connecting various parts of the electronic device 100 via various interfaces and lines.

[0074] The memory 101 in the electronic device 100 stores multiple instructions to implement a method for determining the structural safety of a hydropower station during its operation. The processor 102 can execute the multiple instructions to achieve the following: Obtain concrete and steel reinforcement parameters at the target monitoring points; The concrete and steel parameters of the target monitoring points are preprocessed to obtain the preprocessed concrete and steel parameters of the target monitoring points. The preprocessing refers to filtering first and then temperature compensation correction. Based on the pre-processed concrete and steel parameters of the target monitoring points, the concrete safety factor and the steel safety factor are determined. An early warning is issued when the concrete and steel reinforcement parameters at the target monitoring point, after temperature compensation correction, are greater than or equal to the set multiple of the concrete and steel reinforcement yield strength. When the concrete and steel parameters of the target monitoring point after temperature compensation correction are less than the yield strength of concrete and steel by a set multiple, calculate the equivalent strength of concrete under multiaxial stress and the cumulative damage index of steel. Based on the safety factor of concrete, the safety factor of steel reinforcement, the equivalent strength of concrete under multiaxial stress, and the cumulative damage index of steel reinforcement, it is determined whether there are any abnormal hidden dangers at the dam monitoring points.

[0075] Example 5: If the modules / units integrated in the electronic device 100 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).

[0076] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0077] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0078] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0079] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for determining the structural safety of a hydropower station dam during its operation, characterized in that, Includes the following steps: Obtain concrete and steel reinforcement parameters at the target monitoring points; The concrete and steel parameters of the target monitoring points are preprocessed to obtain the preprocessed concrete and steel parameters of the target monitoring points. The preprocessing refers to filtering first and then temperature compensation correction. Based on the pre-processed concrete and steel parameters of the target monitoring points, the concrete safety factor and the steel safety factor are determined. An early warning is issued when the concrete and steel reinforcement parameters at the target monitoring point, after temperature compensation correction, are greater than or equal to the set multiple of the concrete and steel reinforcement yield strength. When the concrete and steel parameters of the target monitoring point after temperature compensation correction are less than the yield strength of concrete and steel by a set multiple, calculate the equivalent strength of concrete under multiaxial stress and the cumulative damage index of steel. Based on the safety factor of concrete, the safety factor of steel reinforcement, the equivalent strength of concrete under multiaxial stress, and the cumulative damage index of steel reinforcement, it is determined whether there are any abnormal hidden dangers at the dam monitoring points.

2. The method for determining the structural safety of a hydropower station during its operation period according to claim 1, characterized in that, The calculation formula for temperature compensation correction of concrete parameters at the target monitoring point is as follows: in, The concrete parameters at the target monitoring point after temperature compensation correction. These are the concrete parameters of the target monitoring point after filtering. This refers to the elastic modulus of concrete. This is the coefficient of thermal expansion of concrete. The real-time temperature of the target monitoring point. For reference temperature; The calculation formula for temperature compensation correction of the reinforcement parameters at the target monitoring point is as follows: in, The rebar parameters for the target monitoring points after temperature compensation correction. These are the concrete parameters of the target monitoring point after filtering. This refers to the elastic modulus of the reinforcing steel. The coefficient of thermal expansion of the steel reinforcement is... The real-time temperature of the target monitoring point. This is a reference temperature.

3. The method for determining the structural safety of a hydropower station during its operation period according to claim 1, characterized in that, The formula for calculating the safety factor of concrete is: in, For the safety factor of concrete, The yield strength of concrete. The concrete parameters at the target monitoring point after temperature compensation correction.

4. The method for determining the structural safety of a hydropower station during its operation period according to claim 1, characterized in that, The formula for calculating the safety factor of reinforcing steel is: in, For the safety factor of the reinforcing steel, The yield strength of the steel reinforcement. The steel reinforcement parameters of the target monitoring point after temperature compensation correction.

5. The method for determining the structural safety of a hydropower station during its operation period according to claim 1, characterized in that, The formula for calculating the equivalent strength of concrete under multiaxial stress is as follows: in, This represents the equivalent strength of concrete under multiaxial stress. For the second deviatoric stress invariant, The first material constant, This is the first stress invariant; Second deviatoric stress invariant The calculation formula is: in, , and These represent the three directional components of stress; First stress invariant The calculation formula is: 。 6. The method for determining the structural safety of a hydropower station during its operation period according to claim 1, characterized in that, The formula for calculating the cumulative damage index of reinforcing bars is: in, The cumulative damage index of steel bars. The fatigue life of the material under the current stress level. For the first The duration of action at each stress level For the first The magnitude of the stress, This represents the total amount of stress.

7. The method for determining the structural safety of a hydropower station during its operation period according to claim 1, characterized in that, The determination of whether there are any abnormal or potential hazards at the dam monitoring points specifically includes: When the safety factor of concrete is less than the first set threshold or the safety factor of steel reinforcement is less than the second set threshold, it indicates that there is a minor abnormality or potential danger at the dam's measuring point. When the safety factor of concrete is less than the set third threshold or the safety factor of steel reinforcement is less than the set fourth threshold, it indicates that there is a serious abnormality or hidden danger at the dam measuring point. When the equivalent strength of concrete under multiaxial stress exceeds the set fifth threshold, it indicates that there is an abnormal potential at the dam's measuring point. When the cumulative damage index of the reinforcing steel is greater than or equal to the set sixth threshold, it indicates that there is an abnormal potential hazard at the dam's measuring point.

8. A system for determining the structural safety of a hydropower station dam during its operation, characterized in that, It includes a data acquisition module, a data preprocessing module, a safety factor determination module, an early warning module, a parameter determination module, and a hazard assessment module; The data acquisition module is used to acquire concrete parameters and steel reinforcement parameters at the target monitoring points; The data preprocessing module is used to preprocess the concrete parameters and steel reinforcement parameters of the target monitoring points to obtain the preprocessed concrete parameters and steel reinforcement parameters of the target monitoring points. The preprocessing refers to filtering first, and then temperature compensation correction after filtering. The safety factor determination module is used to determine the concrete safety factor and the steel reinforcement safety factor based on the pre-processed concrete and steel reinforcement parameters of the target monitoring points. The early warning module is used to issue an early warning when the concrete parameters and steel reinforcement parameters of the target monitoring point after temperature compensation correction are greater than or equal to the yield strength of concrete and steel reinforcement by a set multiple. The parameter determination module is used to calculate the equivalent strength of concrete under multiaxial stress and the cumulative damage index of steel reinforcement when the concrete parameters and steel reinforcement parameters of the target monitoring point after temperature compensation correction are less than the yield strength of concrete and steel reinforcement by a set multiple. The hazard assessment module is used to determine whether there are any abnormal hazards at the dam's measuring points based on the concrete safety factor, the steel reinforcement safety factor, the equivalent strength of the concrete under multiaxial stress, and the cumulative damage index of the steel reinforcement.

9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method for determining the structural safety of a hydropower station during its operation period, as described in any one of claims 1 to 7.

10. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the method for determining the structural safety of a hydropower station during its operation period as described in any one of claims 1 to 7.

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