Sensor system and method for monitoring fatigue damage of concrete member

Abstract

The invention relates to the technical field of concrete member fatigue damage detection, and discloses a sensor system and method for monitoring fatigue damage of a concrete member, and the system comprises a sensor monitoring module which is used for carrying out the real-time monitoring of a target concrete member, and obtaining the real-time state data of the target concrete member; the environment monitoring module is used for monitoring the environment where the target concrete member is located in real time and obtaining real-time environment data; and the analysis processing module is used for receiving the real-time state data and the real-time environment data and evaluating whether the fatigue damage of the target concrete member occurs or not according to the real-time state data and the real-time environment data. Various physical parameters of the concrete member can be monitored in real time, the influence of comprehensive environmental factors on the target concrete member can be monitored, and the fatigue damage state of the concrete member can be accurately judged through data analysis and processing.

Description

Technical Field

[0001] The present invention relates to the technical field of fatigue damage detection of concrete components, and in particular to a sensor system and method for monitoring fatigue damage of concrete components. Background Art

[0002] With the widespread application of concrete structures, their long-term performance and durability have attracted more and more attention. In particular, under high load and complex environmental conditions, concrete components are prone to fatigue damage, which seriously affects the safety and service life of the structure.

[0003] Existing fatigue damage monitoring technologies for concrete components mainly include vibration testing, acoustic wave detection, strain measurement and other methods. However, these methods have certain limitations in practical applications. For example, although vibration testing can reflect the overall performance of the structure, it is difficult to accurately identify local damage; although acoustic wave detection is more sensitive to the damage location, it is greatly affected by environmental noise and concrete material properties; strain measurement can directly reflect the deformation of concrete components, but traditional strain gauges are inconvenient to install and are easily affected by environmental factors. Therefore, a sensor system and method for monitoring fatigue damage of concrete components are proposed to monitor whether fatigue damage occurs in concrete components. Summary of the invention

[0004] The purpose of the present invention is to provide a sensor system and method for monitoring fatigue damage of concrete components to solve the following technical problems:

[0005] How to provide a sensor system that can more accurately monitor whether fatigue damage occurs in concrete components.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A sensor system for monitoring fatigue damage of concrete components, comprising:

[0008] A sensor monitoring module is used to monitor the target concrete component in real time and obtain real-time status data of the target concrete component;

[0009] An environmental monitoring module, used to monitor the environment where the target concrete component is located in real time and obtain real-time environmental data;

[0010] The analysis and processing module is used to receive the real-time status data and the real-time environmental data, and evaluate whether fatigue damage occurs to the target concrete component according to the real-time status data and the real-time environmental data.

[0011] Preferably, the sensor monitoring module is arranged at multiple locations in the target concrete component, the sensor monitoring module includes a strain sensor, a displacement sensor and an acceleration sensor, and the real-time status data includes strain data of the target concrete component during the stress process monitored by the strain sensor, displacement data of the target concrete component during the stress process monitored by the displacement sensor, and acceleration data of the target concrete component during the stress process monitored by the acceleration sensor.

[0012] Preferably, the process of evaluating whether fatigue damage occurs to the target concrete component according to the real-time status data and the real-time environmental data comprises:

[0013] Acquire the fatigue safety factor of each part of the target concrete component according to the real-time status data;

[0014] Acquire the environmental impact coefficient of the environment where the target concrete component is located according to the real-time environmental data;

[0015] Correcting a preset threshold corresponding to the fatigue safety factor according to the environmental impact coefficient;

[0016] The fatigue safety factor of each part is compared with the corresponding preset threshold value. If the corresponding threshold conditions are met, the fatigue safety factor is compared with the corrected preset threshold value, and whether fatigue damage occurs to the target concrete component is evaluated according to the comparison result.

[0017] Preferably, the process of obtaining the fatigue safety factor of each part of the target concrete component according to the real-time status data includes:

[0018] By formula:

[0019] h i =μ1*γ Fi +μ2*γ si +μ3*γ Zi

[0020] Calculate the fatigue safety factor h of the i-th position of the target concrete component i ;

[0021] in,

[0022]

[0023] Among them, (t1, t2) is the corresponding collection time period; Z i (t) is the acceleration variation curve of the i-th position of the target concrete component; Z i0(t) is the standard acceleration variation curve of the i-th position of the target concrete component; ΔR iZ is the acceleration state reference value of the i-th position of the target concrete component; Zi F is the acceleration fatigue influence function; i (t) is the strain variation curve of the i-th position of the target concrete component; F i0 (t) is the standard strain variation curve of the i-th position of the target concrete component; ΔRi F is the strain state reference value of the i-th position of the target concrete component; γ Zi0 is the preset acceleration change standard coefficient; π1 and π2 are the preset strain influence weight coefficients; h Fi is the strain fatigue influence function; S i (t) is the displacement variation curve of the i-th position of the target concrete component; S i0 (t) is the standard displacement variation curve of the i-th position of the target concrete component; ΔR iS is the displacement state reference value of the i-th position of the target concrete component; Si is the displacement fatigue influence function; γ Fi0 is the preset strain change standard coefficient; ρ1, ρ2 and ρ3 are the preset strain influence weight coefficients; μ1, μ2 and μ3 are the preset weight coefficients.

[0024] Preferably, the process of obtaining the environmental impact coefficient of the environment where the target concrete component is located according to the real-time environmental data includes:

[0025] By formula:

[0026]

[0027] in,

[0028] Calculate the environmental impact coefficient y0 of the environment where the target concrete component is located in the corresponding collection time period (t1, t2);

[0029] Where n is the number of environmental parameters; j∈[1,n]; α j is the weight coefficient of the jth environmental parameter; E j (t) is the j-th environmental parameter variation curve; E j0 (t) is the standard variation curve of the jth environmental parameter; Δe j is the preset change difference of the jth environmental parameter; g is the environmental damage influence function.

[0030] Preferably, the process of correcting the preset threshold corresponding to the fatigue safety factor according to the environmental impact coefficient includes:

[0031] By formula:

[0032]

[0033] Calculate the corrected threshold h for the i-th part i1 ;

[0034] Among them, h i0 is the preset threshold value of the ith part; y1 is the preset environmental impact state value.

[0035] Preferably, the fatigue safety factor of each part is compared with the corresponding preset threshold value respectively. If the corresponding threshold conditions are met, the fatigue safety factor is compared with the corrected preset threshold value. The process of evaluating whether fatigue damage occurs to the target concrete component according to the comparison result includes:

[0036] The fatigue safety factor h of the i-th part i and the preset threshold h of the i-th part i0 To compare:

[0037] If h i ≥h i0 , it is judged that fatigue damage occurs at the i-th part of the target concrete component;

[0038] Otherwise, the fatigue safety factor h of the ith part is i and the corrected threshold h of the i-th part i1 To compare:

[0039] If h i ≥h i1 , it is judged that fatigue damage occurs at the i-th part of the target concrete component;

[0040] Otherwise, it is determined that the i-th position of the target concrete component has no fatigue damage.

[0041] Preferably, the analysis and processing module further includes evaluating the overall fatigue damage state of the target concrete component according to the fatigue damage state of each part:

[0042] By formula:

[0043]

[0044] Calculating the overall fatigue damage coefficient W0 of the target concrete component;

[0045] The overall fatigue damage coefficient W0 and the preset threshold value W A , W B To compare:

[0046] If W0≥WB , then the overall fatigue damage state is judged to be extremely poor;

[0047] If W B >W0>W A , then the overall fatigue damage state is judged to be poor;

[0048] If W0≤W A , then the overall fatigue damage state is better;

[0049] Wherein, m is the total number of detection positions of the target concrete component; i∈[1,m]; τ i is the weight coefficient of the ith part.

[0050] A sensor method for monitoring fatigue damage of concrete components, comprising:

[0051] The target concrete component is monitored in real time and real-time status data of the target concrete component is obtained; the environment where the target concrete component is located is monitored in real time and real-time environmental data is obtained; and whether fatigue damage occurs to the target concrete component is evaluated according to the real-time status data and the real-time environmental data.

[0052] Beneficial effects of the present invention:

[0053] The sensor system and method for monitoring fatigue damage of concrete components obtain real-time status data of target concrete components through a sensor monitoring module, and monitor the environment where the target concrete components are located in real time through an environmental monitoring module and obtain real-time environmental data, so as to monitor in real time various physical parameters of the concrete components and the influence of comprehensive environmental factors on the target concrete components. Through data analysis and processing, the fatigue damage state of the concrete components can be accurately judged, thereby improving the safety of the concrete components. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The present invention will be further described below in conjunction with the accompanying drawings.

[0055] Figure 1 It is a schematic diagram of system module connection of the present invention. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] See also Figure 1As shown, the present invention is a sensor system for monitoring fatigue damage of concrete components, comprising:

[0058] A sensor monitoring module is used to monitor the target concrete component in real time and obtain real-time status data of the target concrete component;

[0059] The environmental monitoring module is used to monitor the environment where the target concrete component is located in real time and obtain real-time environmental data;

[0060] The analysis and processing module is used to receive real-time status data and real-time environmental data, and evaluate whether fatigue damage occurs to the target concrete component based on the real-time status data and real-time environmental data.

[0061] Through the above technical solution, this embodiment obtains the real-time status data of the target concrete component through the sensor monitoring module, monitors the environment where the target concrete component is located in real time through the environmental monitoring module, and obtains real-time environmental data, so as to be able to monitor in real time various physical parameters of the concrete component and the influence of comprehensive environmental factors on the target concrete component. Through data analysis and processing, the fatigue damage state of the concrete component can be accurately judged, thereby improving the safety of the concrete component.

[0062] The sensor monitoring module is set at multiple locations in the target concrete component. The sensor monitoring module includes a strain sensor, a displacement sensor and an acceleration sensor. The real-time status data includes the strain data of the target concrete component during the stress process monitored by the strain sensor, the displacement data of the target concrete component during the stress process monitored by the displacement sensor, and the acceleration data of the target concrete component during the stress process monitored by the acceleration sensor.

[0063] The process of evaluating whether fatigue damage occurs to the target concrete component based on real-time status data and real-time environmental data includes:

[0064] Obtain fatigue safety factors of various parts of target concrete components based on real-time status data;

[0065] Obtain the environmental impact coefficient of the environment where the target concrete component is located based on real-time environmental data;

[0066] Correct the preset threshold value corresponding to the fatigue safety factor according to the environmental impact factor;

[0067] The fatigue safety factor of each part is compared with the corresponding preset threshold value. If the corresponding threshold conditions are met, the fatigue safety factor is compared with the corrected preset threshold value. According to the comparison result, it is evaluated whether fatigue damage occurs to the target concrete component.

[0068] Through the above technical solution, this embodiment proposes a method for evaluating whether fatigue damage occurs to a target concrete component based on real-time status data and real-time environmental data. Specifically, the fatigue safety factor of each part of the target concrete component is obtained based on the real-time status data, that is, the strain data, displacement data and acceleration data during the force process. By analyzing the fatigue safety factor, potential fatigue damage areas can be found, and the impact of environmental factors on concrete components is taken into account. For example, a high humidity environment may cause an increase in moisture in the concrete, thereby affecting its strength and durability; temperature changes may cause thermal expansion and contraction of the concrete material, thereby generating thermal strain; and others Environmental factors that may affect concrete components are identified, so that the environmental impact coefficient of the environment in which the target concrete component is located is obtained based on real-time environmental data. The preset threshold corresponding to the fatigue safety factor of the target concrete component in a conventional environment is corrected based on the environmental impact coefficient, and then the fatigue safety factor of each part is compared with the corresponding preset threshold. If the corresponding threshold conditions are met, the fatigue safety factor is compared with the corrected preset threshold. According to the comparison result, whether fatigue damage occurs to the target concrete component is evaluated, and then the influence of environmental factors on the target concrete component is comprehensively considered to accurately judge the fatigue damage state of the concrete component, thereby improving the accuracy and efficiency of monitoring.

[0069] It should be noted that monitoring points are set at various locations within the target concrete component according to the structural characteristics of the target concrete component, and real-time status data is obtained through the strain sensors, displacement sensors and acceleration sensors at the monitoring points. The strain sensor is used to measure the strain change of the concrete component during the stress process, so as to infer its fatigue damage degree; the displacement sensor is used to measure the displacement change of the concrete component during the stress process, and the deformation of the component can be inferred from the displacement change, so as to evaluate its fatigue damage; the acceleration sensor is used to measure the vibration acceleration of the concrete component during the stress process, and the fatigue damage of the component can be inferred by analyzing the vibration signal; and the corresponding sensors obtain real-time environmental data; the real-time environmental data includes but is not limited to temperature, humidity and ultraviolet radiation.

[0070] The process of obtaining the fatigue safety factor of each part of the target concrete component according to the real-time status data includes:

[0071] By formula:

[0072] h i =μ1*γ Fi +μ2*γ Si +μ3*γ Zi

[0073] Calculate the fatigue safety factor h of the i-th position of the target concrete component i ;

[0074] in,

[0075]

[0076]

[0077] Among them, (t1, t2) is the corresponding collection time period; Z i (t) is the acceleration variation curve of the i-th position of the target concrete component; Z i0 (t) is the standard acceleration variation curve of the i-th position of the target concrete component; ΔR iZ is the acceleration state reference value of the i-th position of the target concrete component; h Zi F is the acceleration fatigue influence function; i (t) is the strain variation curve of the i-th position of the target concrete component; F i0 (t) is the standard strain variation curve of the i-th position of the target concrete component; ΔR iF is the strain state reference value of the i-th position of the target concrete component; γ Zi0 is the preset acceleration change standard coefficient; π1 and π2 are the preset strain influence weight coefficients; h Fi is the strain fatigue influence function; S i (t) is the displacement variation curve of the i-th position of the target concrete component; S i0 (t) is the standard displacement variation curve of the i-th position of the target concrete component; ΔR iS is the displacement state reference value of the i-th position of the target concrete component; h Si is the displacement fatigue influence function; γ Fi0 is the preset strain change standard coefficient; ρ1, ρ2 and ρ3 are the preset strain influence weight coefficients; μ1, μ2 and μ3 are the preset weight coefficients.

[0078] Through the above technical solution, this embodiment proposes a method for obtaining the fatigue safety factor of each part of the target concrete component according to the real-time status data. Specifically, through the formula h i =μ1*γ Fi +μ2*γ Si +μ3*γ Zi Calculate the fatigue safety factor h of the i-th position of the target concrete component i ;in, Thus, the influence of acceleration change on component damage can be obtained; In this way, the influence of strain change on component damage and the Obtain the effect of acceleration change on strain and the impact on component damage; In this way, the influence of displacement change on component damage can be obtained. The influence of acceleration and strain changes on displacement and the resulting influence on component damage are obtained, thereby improving the accuracy of monitoring.

[0079] It should be noted that the standard acceleration change curve of the i-th position of the target concrete component, the standard strain change curve of the i-th position of the target concrete component, the standard displacement change curve of the i-th position of the target concrete component, and the acceleration state reference value of the i-th position, the strain state reference value of the i-th position and the displacement state reference value of the i-th position are all selected and set according to the structural material parameter reference comparison table of the target concrete component; the acceleration fatigue influence function, the strain fatigue influence function and the displacement fatigue influence function are obtained after BIM analysis and fitting based on the experimental data; the acceleration change standard coefficient γ is preset Zi0 , preset strain influence weight coefficients π1 and π2, preset strain change standard coefficient γ Fi0 The preset strain influence weight coefficients ρ1, ρ2 and ρ3 and the preset weight coefficients μ1, μ2 and μ3 are obtained after fitting according to the experimental data and will not be described in detail here.

[0080] The process of obtaining the environmental impact coefficient of the environment where the target concrete component is located based on real-time environmental data includes:

[0081] By formula:

[0082]

[0083] in,

[0084] Calculate the environmental impact coefficient y0 of the environment where the target concrete component is located in the corresponding collection time period (t1, t2);

[0085] Where n is the number of environmental parameters; j∈[1,n]; α j is the weight coefficient of the jth environmental parameter; E j (t) is the j-th environmental parameter variation curve; E j0 (t) is the standard variation curve of the jth environmental parameter; Δe j is the preset change difference of the jth environmental parameter; g is the environmental damage influence function.

[0086] Through the above technical solution, this embodiment proposes a method for obtaining the environmental impact coefficient of the environment where the target concrete component is located according to real-time environmental data. Specifically, through the formula Calculate the environmental impact coefficient y0 of the target concrete component's environment in the corresponding acquisition time period (t1, t2), where: The variation coefficient of the environmental parameters is obtained, so that the environmental impact coefficient of the environment where the target concrete component is located can be obtained according to the real-time environmental data, thereby improving the accuracy of monitoring.

[0087] It should be noted that the weight coefficients corresponding to different environmental parameters are different, and α j The specific value of is obtained according to the different degrees of influence of different environmental parameters on component damage and is selectively selected according to experimental data; the standard change curve of the jth environmental parameter E j0 (t) and the preset change difference Δe of the jth environmental parameter j It is selected after fitting the experimental data; the environmental damage influence function g is obtained after BIM analysis and fitting based on the experimental data, which will not be described in detail here.

[0088] The process of correcting the preset threshold value corresponding to the fatigue safety factor according to the environmental impact factor includes:

[0089] By formula:

[0090]

[0091] Calculate the corrected threshold h for the i-th part i1 ;

[0092] Among them, h i0 is the preset threshold value of the ith part; y1 is the preset environmental impact state value.

[0093] Through the above technical solution, this embodiment proposes a method for correcting the preset threshold corresponding to the fatigue safety factor according to the environmental impact coefficient. Specifically, through the formula Calculate the corrected threshold h for the i-th part i1 , so as to modify the preset threshold value corresponding to the fatigue safety factor of the target concrete component in a normal environment according to the environmental impact coefficient, and then accurately judge the fatigue damage state of the concrete component, thereby improving the accuracy and efficiency of monitoring; it should be noted that the preset threshold value h of the i-th part i0 And the preset environmental impact state value y1 is selected after fitting according to the experimental data.

[0094] The fatigue safety factor of each part is compared with the corresponding preset threshold value. If the corresponding threshold conditions are met, the fatigue safety factor is compared with the corrected preset threshold value. The process of evaluating whether fatigue damage occurs to the target concrete component according to the comparison results includes:

[0095] The fatigue safety factor h of the i-th part i and the preset threshold h of the i-th part i0 Compare: If hi ≥h i0 , then it is judged that fatigue damage occurs at the i-th part of the target concrete component;

[0096] Otherwise, the fatigue safety factor h of the ith part is i and the corrected threshold h of the i-th part i1 To compare:

[0097] Obviously if h i ≥h i1 , it is judged that fatigue damage occurs at the i-th part of the target concrete component; otherwise, it is judged that fatigue damage does not occur at the i-th part of the target concrete component, thereby comprehensively considering the influence of environmental factors on the target concrete component, accurately judging the fatigue damage state of the concrete component, and improving the accuracy and efficiency of monitoring.

[0098] The analysis and processing module also includes evaluating the overall fatigue damage state of the target concrete component based on the fatigue damage state of each part:

[0099] By formula:

[0100]

[0101] Calculate the overall fatigue damage coefficient W0 of the target concrete component;

[0102] The overall fatigue damage coefficient W0 is compared with the preset threshold W A , W B To compare:

[0103] If W0≥W B , then the overall fatigue damage state is judged to be extremely poor;

[0104] If W B >W0>W A , then the overall fatigue damage state is judged to be poor;

[0105] If W0≤W A , the overall fatigue damage state is better.

[0106] Where m is the total number of detection locations of the target concrete component; i∈[1,m]; τ i is the weight coefficient of the ith part.

[0107] Through the above technical solution, this embodiment proposes a method for evaluating the overall fatigue damage state of a target concrete component according to the fatigue damage state of each part. Specifically, through the formula Calculate the overall fatigue damage coefficient W0 of the target concrete component, where τ iis the weight coefficient of the ith part, which is selectively selected according to the different effects of the damage size of each part on the overall damage of the component; then the overall fatigue damage coefficient W0 is compared with the preset threshold W A , W B By comparison, the overall fatigue damage status can be judged.

[0108] It should be noted that W A , W B The value of is obtained according to the analytical fitting process, and W B >W A .

[0109] A sensor method for monitoring fatigue damage of concrete components, comprising:

[0110] The target concrete component is monitored in real time and the real-time status data of the target concrete component is obtained; the environment in which the target concrete component is located is monitored in real time and the real-time environmental data is obtained; and whether fatigue damage occurs to the target concrete component is evaluated based on the real-time status data and the real-time environmental data.

[0111] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A sensor system for monitoring fatigue damage of concrete components, characterized in that: include: A sensor monitoring module is used to monitor the target concrete component in real time and obtain real-time status data of the target concrete component; An environmental monitoring module, used to monitor the environment where the target concrete component is located in real time and obtain real-time environmental data; The analysis and processing module is used to receive the real-time status data and the real-time environmental data, and evaluate whether fatigue damage occurs to the target concrete component according to the real-time status data and the real-time environmental data.

2. The sensor system for monitoring fatigue damage of concrete components according to claim 1, characterized in that: The sensor monitoring module is arranged at multiple positions in the target concrete component, and the sensor monitoring module includes a strain sensor, a displacement sensor and an acceleration sensor. The real-time status data includes strain data of the target concrete component during the stress process monitored by the strain sensor, displacement data of the target concrete component during the stress process monitored by the displacement sensor, and acceleration data of the target concrete component during the stress process monitored by the acceleration sensor.

3. The sensor system for monitoring fatigue damage of concrete components according to claim 1, characterized in that: The process of evaluating whether fatigue damage occurs to the target concrete component according to the real-time status data and the real-time environmental data includes: Acquire the fatigue safety factor of each part of the target concrete component according to the real-time status data; Acquire the environmental impact coefficient of the environment where the target concrete component is located according to the real-time environmental data; Correcting a preset threshold corresponding to the fatigue safety factor according to the environmental impact coefficient; The fatigue safety factor of each part is compared with the corresponding preset threshold value. If the corresponding threshold conditions are met, the fatigue safety factor is compared with the corrected preset threshold value, and whether fatigue damage occurs to the target concrete component is evaluated according to the comparison result.

4. The sensor system for monitoring fatigue damage of concrete components according to claim 3, characterized in that: The process of obtaining the fatigue safety factor of each part of the target concrete component according to the real-time status data includes: By formula: h i =μ1*γ Fi +μ2*γ Si +μ3*γ Zi Calculate the fatigue safety factor h of the i-th position of the target concrete component i ; in, Among them, (t1, t2) is the corresponding collection time period; Z i (t) is the acceleration variation curve of the i-th position of the target concrete component; Z i0 (t) is the standard acceleration variation curve of the i-th position of the target concrete component; ΔR iZ is the acceleration state reference value of the i-th position of the target concrete component; Zi F is the acceleration fatigue influence function; i (t) is the strain variation curve of the i-th position of the target concrete component; F i0 (t) is the standard strain variation curve of the i-th position of the target concrete component; ΔR iF is the strain state reference value of the i-th position of the target concrete component; γ Zi0 is the preset acceleration change standard coefficient; π1 and π2 are the preset strain influence weight coefficients; h Fi is the strain fatigue influence function; S i (t) is the displacement variation curve of the i-th position of the target concrete component; S i0 (t) is the standard displacement variation curve of the i-th position of the target concrete component; ΔR iS is the displacement state reference value of the i-th position of the target concrete component; Si is the displacement fatigue influence function; γ Fi0 is the preset strain change standard coefficient; ρ1, ρ2 and ρ3 are the preset strain influence weight coefficients; μ1, μ2 and μ3 are the preset weight coefficients.

5. The sensor system for monitoring fatigue damage of concrete components according to claim 3, characterized in that: The process of obtaining the environmental impact coefficient of the environment where the target concrete component is located according to the real-time environmental data includes: By formula: in, Calculate the environmental impact coefficient y0 of the environment where the target concrete component is located in the corresponding collection time period (t1, t2); Where n is the number of environmental parameters; j∈[1,n]; α j is the weight coefficient of the jth environmental parameter; E j (t) is the j-th environmental parameter variation curve; E j0 (t) is the standard variation curve of the jth environmental parameter; Δe j is the preset change difference of the jth environmental parameter; g is the environmental damage influence function.

6. The sensor system for monitoring fatigue damage of concrete components according to claim 5, characterized in that: The process of correcting the preset threshold corresponding to the fatigue safety factor according to the environmental impact coefficient includes: By formula: Calculate the corrected threshold h for the i-th part i1 ; Among them, h i0 is the preset threshold value of the ith part; y1 is the preset environmental impact state value.

7. The sensor system for monitoring fatigue damage of concrete components according to claim 3, characterized in that: The fatigue safety factor of each part is compared with the corresponding preset threshold value respectively. If the corresponding threshold conditions are met, the fatigue safety factor is compared with the corrected preset threshold value. The process of evaluating whether fatigue damage occurs to the target concrete component according to the comparison result includes: The fatigue safety factor h of the i-th part i and the preset threshold h of the i-th part i0 To compare: If h i ≥h i0 , it is judged that fatigue damage occurs at the i-th part of the target concrete component; Otherwise, the fatigue safety factor h of the ith part is i and the corrected threshold h of the i-th part i1 To compare: If h i ≥h i1 , it is judged that fatigue damage occurs at the i-th part of the target concrete component; Otherwise, it is determined that the i-th position of the target concrete component has no fatigue damage.

8. The sensor system for monitoring fatigue damage of concrete components according to claim 7, characterized in that: The analysis and processing module also includes evaluating the overall fatigue damage state of the target concrete component according to the fatigue damage state of each part: By formula: Calculating the overall fatigue damage coefficient W0 of the target concrete component; The overall fatigue damage coefficient W0 and the preset threshold value W A , W B To compare: If W0≥W B , then the overall fatigue damage state is judged to be extremely poor; If W B >W0>W A , then the overall fatigue damage state is judged to be poor; If W0≤W A , then the overall fatigue damage state is better; Wherein, m is the total number of detection positions of the target concrete component; i∈[1,m]; τ i is the weight coefficient of the ith part.

9. A sensor method for monitoring fatigue damage of concrete components, characterized in that: include: Performing real-time monitoring on a target concrete component and acquiring real-time status data of the target concrete component; Performing real-time monitoring of the environment where the target concrete component is located and acquiring real-time environmental data; Whether fatigue damage occurs to the target concrete component is evaluated according to the real-time status data and the real-time environmental data.

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