Port wharf structure safety evaluation system and method based on digital twinning

Abstract

The invention relates to the technical field of structure safety detection, and discloses a digital twinning-based port wharf structure safety evaluation system and method, and the system comprises a model building module which is configured to build a digital twinning model according to the actual structure of a port wharf; the sensor assembly is arranged in a to-be-monitored area of the port wharf structure; the acquisition module is configured to acquire structure information and environment information; the structure evaluation module is configured to calculate a structure evaluation initial value through the pressure value and the vibration value when the structure is loaded, and adjust the structure evaluation initial value according to the inclination angle influence value to obtain a structure evaluation final value; the environment evaluation module is configured to calculate an environment evaluation initial value through the water level value and adjust the environment evaluation initial value according to the wind power influence value to obtain an environment evaluation final value; and the grade evaluation module is configured to divide the structure safety evaluation grade according to the structure safety evaluation value. According to the invention, the structure safety monitoring and evaluation capability is improved, and the evaluation precision and efficiency are high.

Description

Technical Field

[0001] The present invention relates to the technical field of structural safety detection, and in particular to a port terminal structure safety assessment system and method based on digital twins. Background Art

[0002] With the continuous development of global trade, ports, as important transportation hubs, have become particularly important for their structural safety. Port terminals undertake huge tasks of cargo loading and unloading and ship berthing, so the safety and stability of their structures are directly related to the operational efficiency and economic benefits of the ports. In practical applications, port terminals are affected by a variety of environmental factors, which may cause structural damage or safety hazards.

[0003] Traditional structural safety assessment methods usually rely on manual inspections and regular testing, which have problems such as long response time and untimely data acquisition. With the rapid development of sensor technology and data processing technology, intelligent monitoring systems based on digital twin technology have emerged. Digital twin technology can create real-time virtual models of physical objects, making the monitoring and assessment process more accurate and efficient. Through real-time data collection and analysis of actual structures, potential safety hazards can be quickly identified, and corresponding maintenance and repair measures can be taken in a timely manner.

[0004] Therefore, it is necessary to provide a port terminal structure safety assessment system and method based on digital twins to solve the problem that the existing technology for the detection and assessment of port terminal structures relies on manual inspections and regular inspections, with low accuracy and low efficiency. Summary of the invention

[0005] In view of this, the present invention proposes a port terminal structure safety assessment system and method based on digital twins, aiming to solve the problem that the detection and assessment of port terminal structures in the existing technology rely on manual inspections and regular inspections, with low accuracy and low efficiency.

[0006] On the one hand, the present invention proposes a port terminal structure safety assessment system based on digital twins, comprising:

[0007] A model building module is configured to build a digital twin model of the port terminal according to its actual structure through three-dimensional modeling technology;

[0008] A sensor assembly, including a pressure sensor, a vibration sensor, an inclination sensor, a water level sensor and a wind sensor, wherein the sensor assembly is arranged in a to-be-monitored area of ​​the port terminal structure;

[0009] A collection module configured to collect structural information and environmental information, wherein the structural information includes a pressure value, a vibration value and an inclination angle, and the environmental information includes a water level value and a wind speed;

[0010] A structure evaluation module is configured to calculate an initial structure evaluation value through a pressure value and a vibration value when the structure is loaded, determine whether to adjust the initial structure evaluation value through an inclination angle when the structure is loaded, and if it is determined that adjustment is required, calculate an inclination angle influence value according to the pressure value, the inclination angle when not loaded, and the inclination angle when loaded, and adjust the initial structure evaluation value according to the inclination angle influence value to obtain a final structure evaluation value;

[0011] The environmental assessment module is configured to calculate an initial environmental assessment value through a water level value, determine whether to adjust the initial environmental assessment value according to the wind speed, and if it is determined that adjustment is required, calculate a wind impact value according to the wind speed and an absolute value of a wind speed change per unit time, and adjust the initial environmental assessment value according to the wind impact value to obtain a final environmental assessment value;

[0012] The grade assessment module is configured to obtain a structural safety assessment value according to the structural assessment final value and the environmental assessment final value, and to divide the structural safety assessment grade according to the structural safety assessment value.

[0013] Furthermore, when the structure assessment module is configured to calculate the initial value of structure assessment through the pressure value and vibration value when the structure is loaded, it includes:

[0014] A list of maximum vibration values ​​corresponding to load pressure values ​​and standard structural assessment initial values ​​are preset, and when the actual vibration value is less than or equal to the maximum vibration value corresponding to the actual pressure value in the list, the structural assessment initial value is the standard structural assessment initial value;

[0015] When the actual vibration value is greater than the maximum vibration value corresponding to the pressure value in the list, the initial value of the structural evaluation is calculated according to the difference between the actual vibration value and the maximum vibration value and the actual pressure value by the following formula:

[0016] S = S0-k*[Vs-Vmax(P)]*P;

[0017] In the above formula, S represents the initial value of the structural assessment, S0 represents the initial value of the standard structural assessment, k represents the influence coefficient of the difference between the actual vibration value and the maximum vibration value, and the value range of k is 0-1. When the actual vibration value is less than or equal to the maximum vibration value corresponding to the actual pressure value in the list, k=0, Vs represents the actual vibration value, Vmax(P) represents the maximum vibration value corresponding to the pressure value in the list, and P represents the actual pressure value.

[0018] Furthermore, when the structure assessment module is configured to determine whether to adjust the initial value of the structure assessment according to the inclination angle of the structure under load, it includes:

[0019] Setting a maximum inclination angle, if the inclination angle of the structure under load is less than the maximum inclination angle, it is determined that there is no need to adjust the initial value of the structure assessment;

[0020] If the inclination angle of the structure when loaded is greater than or equal to the maximum inclination angle, it is determined that the initial value of the structure assessment needs to be adjusted.

[0021] Further, the structure assessment module is configured to, if it is determined that adjustment is required, calculate the inclination angle influence value according to the pressure value, the inclination angle when not loaded, and the inclination angle when loaded, including:

[0022] The inclination angle influence value is calculated by the following formula:

[0023] Iθ=c*P*(θ1-θ0);

[0024] In the above formula, Iθ represents the inclination angle influence value, c represents the influence coefficient of the inclination angle on the initial value of the structural assessment, the value range of c is (0, 1], P represents the actual pressure value, θ1 represents the inclination angle under load, and θ0 represents the inclination angle under no load.

[0025] Further, the structure assessment module is configured to adjust the structure assessment initial value according to the inclination angle influence value to obtain the structure assessment final value, including:

[0026] The final value of the structure evaluation is calculated by the following formula:

[0027] Sz = S - Iθ;

[0028] In the above formula, Sz represents the final value of the structural assessment, S represents the initial value of the structural assessment, and Iθ represents the inclination angle influence value.

[0029] Furthermore, when the environmental assessment module is configured to calculate the initial environmental assessment value through the water level value, it includes:

[0030] Set the maximum water level and the standard environmental assessment initial value. If the water level is less than the maximum water level, the environmental assessment initial value is the standard environmental assessment initial value.

[0031] If the water level value is greater than or equal to the maximum water level, the initial environmental assessment value is calculated according to the difference between the water level value and the maximum water level using the following formula:

[0032] H = H0 - (W - Wmax) * a;

[0033] In the above formula, H represents the initial value of environmental assessment, W represents the water level value, Wmax represents the maximum water level, a represents the water level influence coefficient, and the value range of a is 0-1.

[0034] Further, when the environmental assessment module is configured to determine whether to adjust the environmental assessment initial value according to the wind speed, it includes:

[0035] Setting a safe wind speed threshold, if the current wind speed is less than or equal to the safe wind speed threshold, then determining not to adjust the environmental assessment initial value;

[0036] If the current wind speed is greater than the safety wind speed threshold, it is determined that the initial value of the environmental assessment should be adjusted.

[0037] Further, the environmental assessment module is configured to calculate the wind impact value according to the wind speed and the absolute value of the wind speed change per unit time if it is determined that adjustment is needed, and adjust the environmental assessment initial value according to the wind impact value to obtain the environmental assessment final value, including:

[0038] The wind speed difference between the wind speed and the safety wind speed threshold and the absolute value of the wind speed change per unit time are calculated, and the wind force impact value is calculated according to the wind speed difference and the absolute value of the wind speed change by the following formula:

[0039] I f = b*ΔV*|ΔVb|;

[0040] In the above formula, I f represents the wind force influence value, b represents the wind force influence coefficient, the value range of b is (0,0.5], ΔV represents the wind speed difference, |ΔVb| represents the absolute value of the wind speed change;

[0041] The final environmental assessment value is calculated by the following formula:

[0042] Hz = HI f;

[0043] In the above formula, Hz represents the final value of environmental assessment, H represents the initial value of environmental assessment, and If represents the wind impact value.

[0044] Further, the grade assessment module is configured to obtain a structural safety assessment value according to the structural assessment final value and the environmental assessment final value, and to divide the structural safety assessment grade according to the structural safety assessment value, including:

[0045] The structural safety assessment value is obtained by weighted summing the final value of the structural assessment and the final value of the environmental assessment through the following formula:

[0046] J = α*Sz + β*Hz;

[0047] In the above formula, J represents the structural safety assessment value, α represents the weight coefficient of the final value of the structural assessment, Sz represents the final value of the structural assessment, β represents the weight coefficient of the final value of the environmental assessment, Hz represents the final value of the environmental assessment, where α+β=1;

[0048] Set a first evaluation value, a second evaluation value, first-level security, second-level security and third-level security; wherein the first evaluation value is greater than the second evaluation value, and the security levels are first-level security, second-level security and third-level security from high to low;

[0049] If the structural safety assessment value is greater than the first assessment value, the safety level is level one safety;

[0050] If the structural safety assessment value is less than or equal to the first assessment value, and greater than or equal to the second assessment value, the safety level is level 2 safety;

[0051] If the structural safety assessment value is less than the second assessment value, the safety level is level three safety.

[0052] Compared with the prior art, the beneficial effect of the present invention is that the present invention can significantly improve the safety monitoring and assessment capabilities of port terminals. First, the digital twin model established by three-dimensional modeling technology can reflect the status of the actual structure in real time and provide accurate basic data for subsequent safety assessment. Secondly, the system integrates a variety of sensors, which can comprehensively monitor key parameters such as pressure, vibration, inclination, water level and wind speed, and realize real-time data collection of structure and environment. This real-time monitoring capability enables rapid response and reduces potential risks when faced with emergencies. In addition, the structural assessment module in the system can accurately calculate the structural assessment value by comprehensively analyzing multiple data under load conditions, and dynamically adjust it according to environmental changes to ensure the scientificity and accuracy of the assessment results. The environmental assessment module also relies on real-time data, takes into account the influence of water level and wind speed, and provides a more comprehensive basis for safety assessment. Finally, the grade assessment module classifies the assessment results, which helps to quickly understand the safety status of the structure, so as to formulate corresponding maintenance and management measures, which not only improves the operational safety of the port, but also effectively reduces the economic losses caused by structural damage and improves the overall operational efficiency.

[0053] On the other hand, this application also provides a port terminal structure safety assessment method based on digital twins, including:

[0054] Through 3D modeling technology, a digital twin model of the port terminal is established based on its actual structure;

[0055] Setting up sensor components in the area to be monitored on the port terminal structure;

[0056] Collecting structural information and environmental information, wherein the structural information includes pressure value, vibration value and inclination angle, and the environmental information includes water level value and wind speed;

[0057] Calculate the initial value of structural evaluation by the pressure value and vibration value when the structure is loaded, determine whether to adjust the initial value of structural evaluation by the inclination angle when the structure is loaded, and if it is determined that adjustment is required, calculate the inclination angle influence value according to the pressure value, the inclination angle when not loaded, and the inclination angle when loaded, and adjust the initial value of structural evaluation according to the inclination angle influence value to obtain the final value of structural evaluation;

[0058] Calculate the initial value of environmental assessment through the water level value, determine whether to adjust the initial value of environmental assessment according to the wind speed, and if it is determined that adjustment is required, calculate the wind impact value according to the wind speed and the absolute value of the wind speed change per unit time, and adjust the initial value of environmental assessment according to the wind impact value to obtain the final value of environmental assessment;

[0059] A structural safety assessment value is obtained according to the structural assessment final value and the environmental assessment final value, and a structural safety assessment grade is divided according to the structural safety assessment value.

[0060] It can be understood that the digital twin-based port terminal structure safety assessment system and method provided in this application have the same beneficial effects and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0062] Figure 1 A functional block diagram of a port terminal structure safety assessment system based on digital twins provided in an embodiment of the present invention;

[0063] Figure 2 A flowchart of a port terminal structure safety assessment method based on digital twins provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0064] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0065] In some embodiments of the present application, see Figure 1 As shown, this embodiment provides a port terminal structure safety assessment system based on digital twins, including:

[0066] A model building module is configured to build a digital twin model of the port terminal according to its actual structure through three-dimensional modeling technology;

[0067] A sensor assembly, including a pressure sensor, a vibration sensor, an inclination sensor, a water level sensor and a wind sensor, the sensor assembly being arranged in a to-be-monitored area of ​​the port terminal structure;

[0068] A collection module, configured to collect structural information and environmental information, the structural information includes pressure value, vibration value and inclination angle, and the environmental information includes water level value and wind speed;

[0069] The structural assessment module is configured to calculate the initial structural assessment value through the pressure value and the vibration value when the structure is loaded, determine whether to adjust the initial structural assessment value through the inclination angle when the structure is loaded, and if it is determined that adjustment is required, calculate the inclination angle influence value according to the pressure value, the inclination angle when not loaded, and the inclination angle when loaded, and adjust the initial structural assessment value according to the inclination angle influence value to obtain the final structural assessment value;

[0070] The environmental assessment module is configured to calculate an initial environmental assessment value through a water level value, determine whether to adjust the initial environmental assessment value according to the wind speed, and if it is determined that adjustment is required, calculate a wind impact value according to the wind speed and the absolute value of the wind speed change per unit time, and adjust the initial environmental assessment value according to the wind impact value to obtain a final environmental assessment value;

[0071] The grade assessment module is configured to obtain a structural safety assessment value according to a structural assessment final value and an environmental assessment final value, and to divide the structural safety assessment grade according to the structural safety assessment value.

[0072] It is understandable that the present invention can significantly improve the safety monitoring and assessment capabilities of port terminals. First, the digital twin model established by three-dimensional modeling technology can reflect the state of the actual structure in real time and provide accurate basic data for subsequent safety assessments. Secondly, the system integrates a variety of sensors, which can comprehensively monitor key parameters such as pressure, vibration, inclination, water level and wind speed, and realize real-time data collection of structures and environments. This real-time monitoring capability enables rapid response and reduces potential risks when faced with emergencies. In addition, the structural assessment module in the system can accurately calculate the structural assessment value by comprehensively analyzing multiple data under load conditions, and dynamically adjust it according to environmental changes to ensure the scientificity and accuracy of the assessment results. The environmental assessment module also relies on real-time data, takes into account the influence of water level and wind speed, and provides a more comprehensive basis for safety assessment. Finally, the grade assessment module grades the assessment results, which helps to quickly understand the safety status of the structure, so as to formulate corresponding maintenance and management measures, which not only improves the operational safety of the port, but also effectively reduces the economic losses caused by structural damage and improves the overall operational efficiency.

[0073] Preferably, the inclination angle refers to the deviation angle of the structure relative to the vertical direction under the action of load.

[0074] In some embodiments of the present application, when the structure assessment module is configured to calculate the initial value of the structure assessment through the pressure value and the vibration value when the structure is loaded, it includes:

[0075] A list of maximum vibration values ​​corresponding to the load pressure values ​​and standard structural assessment initial values ​​are preset. When the actual vibration value is less than or equal to the maximum vibration value corresponding to the actual pressure value in the list, the structural assessment initial value is the standard structural assessment initial value.

[0076] When the actual vibration value is greater than the maximum vibration value corresponding to the pressure value in the list, the initial value of the structural assessment is calculated according to the difference between the actual vibration value and the maximum vibration value and the actual pressure value using the following formula:

[0077] S = S0-k*[Vs-Vmax(P)]*P;

[0078] In the above formula, S represents the initial value of the structural assessment, S0 represents the initial value of the standard structural assessment, k represents the influence coefficient of the difference between the actual vibration value and the maximum vibration value, and the value range of k is 0-1. When the actual vibration value is less than or equal to the maximum vibration value corresponding to the actual pressure value in the list, k=0, Vs represents the actual vibration value, Vmax(P) represents the maximum vibration value corresponding to the pressure value in the list, and P represents the actual pressure value.

[0079] It is understandable that the present invention significantly improves the accuracy and effectiveness of structural safety assessment by combining dynamic analysis of load pressure values ​​and vibration values. First, the list of vibration maximum values ​​corresponding to the preset load pressure values ​​provides a reference standard for the system, so that the calculation of the initial value of the structural assessment is based on actual monitoring data rather than a single theoretical model. When the actual vibration value is lower than or equal to the corresponding maximum value, the system sets the initial assessment value to the standard value, thereby ensuring the structural safety under normal operating conditions. When the vibration value exceeds the preset maximum value, the system dynamically adjusts the initial assessment value through a formula, taking into account the difference between the actual vibration and the maximum vibration value, which not only reflects the pressure on the current structure, but also more accurately assesses possible safety hazards. The introduction of the influence coefficient enables the system to flexibly respond to different vibration conditions and improves the sensitivity and accuracy of the assessment. In addition, dynamic adjustment makes the assessment results more real-time and operational, and facilitates the rapid adoption of corresponding maintenance and management measures. This intelligent assessment method not only enhances the safety monitoring capability of port terminals, but also provides reliable protection for long-term operation, thereby reducing the risk of structural damage and safety accidents.

[0080] In some embodiments of the present application, when the structure assessment module is configured to determine whether to adjust the initial value of the structure assessment according to the inclination angle of the structure under load, the method includes:

[0081] Set the maximum inclination angle. If the inclination angle of the structure under load is less than the maximum inclination angle, it is determined that there is no need to adjust the initial value of the structure assessment.

[0082] If the inclination angle of the structure when loaded is greater than or equal to the maximum inclination angle, it is judged that the initial value of the structural assessment needs to be adjusted.

[0083] In some embodiments of the present application, the structure assessment module is configured to, if it is determined that adjustment is required, calculate the inclination angle influence value according to the pressure value, the inclination angle when not loaded, and the inclination angle when loaded, including:

[0084] The inclination effect value is calculated by the following formula:

[0085] Iθ=c*P*(θ1-θ0);

[0086] In the above formula, Iθ represents the inclination angle influence value, c represents the influence coefficient of the inclination angle on the initial value of the structural assessment, the value range of c is (0, 1], P represents the actual pressure value, θ1 represents the inclination angle under load, and θ0 represents the inclination angle under no load.

[0087] In some embodiments of the present application, the structure assessment module is configured to adjust the initial structure assessment value according to the inclination impact value to obtain the final structure assessment value, including:

[0088] The final value of the structure evaluation is calculated by the following formula:

[0089] Sz = S - Iθ;

[0090] In the above formula, Sz represents the final value of the structural assessment, S represents the initial value of the structural assessment, and Iθ represents the inclination angle influence value.

[0091] It is understandable that the structural assessment module in the present invention significantly improves the accuracy and flexibility of structural assessment through dynamic monitoring and analysis of the inclination angle. First, the maximum inclination angle is set so that under normal load conditions, when the inclination angle is less than this value, there is no need to adjust the initial value of the structural assessment, which not only simplifies the assessment process, but also reduces the risk of misjudgment. When the inclination angle reaches or exceeds the maximum value, the system promptly issues an alarm to prompt potential structural safety hazards. When the initial assessment value needs to be adjusted, the calculation of the inclination angle impact value further enhances the refinement of the assessment. By considering the difference between the actual pressure value and the inclination angle when loaded and unloaded, the introduction of the influence coefficient enables the system to dynamically adjust the degree of influence according to different situations, ensuring that the assessment result is not only based on static data, but also incorporates real-time dynamic information, thereby more accurately reflecting the true state of the structure under load. Finally, the final value of the calculated structural assessment uses the inclination angle impact value to directly adjust the initial assessment value, thereby realizing a comprehensive assessment of the structural state. The design of this system not only improves the safety monitoring capability of the port terminal, but also promptly reflects the impact of environmental changes on structural safety, provides a scientific basis, and ensures the long-term safety and stable operation of the structure.

[0092] In some embodiments of the present application, when the environmental assessment module is configured to calculate the initial environmental assessment value through the water level value, it includes:

[0093] Set the maximum water level and the standard environmental assessment initial value. If the water level is less than the maximum water level, the environmental assessment initial value is the standard environmental assessment initial value.

[0094] If the water level is greater than or equal to the maximum water level, the initial environmental assessment value is calculated based on the difference between the water level and the maximum water level using the following formula:

[0095] H = H0 - (W - Wmax) * a;

[0096] In the above formula, H represents the initial value of environmental assessment, W represents the water level value, Wmax represents the maximum water level, a represents the water level influence coefficient, and the value range of a is 0-1.

[0097] It is understandable that the present invention significantly improves the safety monitoring capability of the port terminal under water level changes by accurately calculating the impact of the water level on the initial value of the environmental assessment. The mechanism of setting the maximum water level and the standard initial value of the environmental assessment ensures that within the normal water level range, the system can quickly and accurately set the initial value of the environmental assessment to the standard value, reducing unnecessary adjustments and ensuring the evaluation efficiency under stable environmental conditions. When the water level exceeds the set maximum value, the module adopts dynamic adjustment and calculates the initial value of the environmental assessment through a formula, thereby considering the specific impact of water level changes on environmental conditions. The introduction of the water level influence coefficient enables the assessment to adapt to different environmental change scenarios and provides more flexible adjustments, which not only improves the accuracy of the environmental assessment, but also can reflect potential risks in a timely manner, can effectively warn of possible water level risks, and reduce the risk of structural damage or safety accidents caused by abnormal water levels. In addition, real-time environmental assessment also provides data support for long-term monitoring. Overall, the present invention provides a strong technical guarantee for improving the operational safety and reliability of the port.

[0098] In some embodiments of the present application, when the environmental assessment module is configured to determine whether to adjust the initial environmental assessment value according to the wind speed, it includes:

[0099] Set a safe wind speed threshold. If the current wind speed is less than or equal to the safe wind speed threshold, it is determined that the initial value of the environmental assessment will not be adjusted.

[0100] If the current wind speed is greater than the safe wind speed threshold, it is determined that the initial value of the environmental assessment should be adjusted.

[0101] In some embodiments of the present application, the environmental assessment module is configured to calculate the wind impact value according to the wind speed and the absolute value of the wind speed change per unit time if it is determined that adjustment is needed, and adjust the initial environmental assessment value according to the wind impact value to obtain the final environmental assessment value, including:

[0102] Calculate the wind speed difference between the wind speed and the safety wind speed threshold and the absolute value of the wind speed change per unit time, and calculate the wind force impact value based on the wind speed difference and the absolute value of the wind speed change using the following formula:

[0103] I f = b*ΔV*|ΔVb|;

[0104] In the above formula, I f represents the wind force influence value, b represents the wind force influence coefficient, the value range of b is (0,0.5], ΔV represents the wind speed difference, |ΔVb| represents the absolute value of the wind speed change;

[0105] The final value of environmental assessment is calculated by the following formula:

[0106] Hz = HI f;

[0107] In the above formula, Hz represents the final value of environmental assessment, H represents the initial value of environmental assessment, and If represents the wind impact value. It can be understood that the present invention effectively improves the port terminal's ability to cope with wind speed changes by setting a safe wind speed threshold. When the current wind speed is lower than or equal to the safety threshold, the system can quickly determine that there is no need to adjust the initial value of environmental assessment, thereby ensuring the evaluation efficiency under stable conditions. However, when the wind speed exceeds the safety threshold, the module will automatically start the adjustment, dynamically calculate the wind impact value based on the wind speed difference and the absolute value of the wind speed change per unit time, and fully consider the specific impact of wind speed changes on environmental conditions. The impact coefficient ensures the flexibility and accuracy of the evaluation. Finally, by adjusting the initial value of the environmental assessment, the final value of the environmental assessment is obtained, so that the system can reflect the risks brought by wind speed changes in real time, which not only improves the sensitivity and accuracy of the environmental assessment, but also provides a scientific basis, thereby effectively reducing the potential safety hazards caused by wind. In general, the present invention greatly enhances the safety monitoring capability of the port terminal and provides an important guarantee for the stable operation of the port.

[0108] In some embodiments of the present application, the grade assessment module is configured to obtain a structural safety assessment value according to the structural assessment final value and the environmental assessment final value, and to divide the structural safety assessment grade according to the structural safety assessment value, including:

[0109] The structural safety assessment value is obtained by weighted summing the final value of the structural assessment and the final value of the environmental assessment through the following formula:

[0110] J = α*Sz + β*Hz;

[0111] In the above formula, J represents the structural safety assessment value, α represents the weight coefficient of the final value of the structural assessment, Sz represents the final value of the structural assessment, β represents the weight coefficient of the final value of the environmental assessment, Hz represents the final value of the environmental assessment, where α+β=1;

[0112] Set a first evaluation value, a second evaluation value, first-level security, second-level security and third-level security; wherein the first evaluation value is greater than the second evaluation value, and the security levels are first-level security, second-level security and third-level security from high to low;

[0113] If the structural safety assessment value is greater than the first assessment value, the safety level is level one safety;

[0114] If the structural safety assessment value is less than or equal to the first assessment value and greater than or equal to the second assessment value, the safety level is level 2 safety;

[0115] If the structural safety assessment value is less than the second assessment value, the safety level is level three safety.

[0116] It can be understood that the present invention, by setting clear safety level classification standards, can clearly correspond the structural safety assessment value with the safety level, can quickly judge the safety of the current structure, provides a clear basis for maintenance and management, effectively enhances the safety management capabilities of ports and terminals, reduces potential risks, and ensures the stability and reliability of operations.

[0117] On the other hand, see Figure 2 As shown, the present application also provides a port terminal structure safety assessment method based on digital twins, which is applied to the above-mentioned port terminal structure safety assessment system based on digital twins, and includes the following steps:

[0118] S100, through 3D modeling technology, build a digital twin model of the port terminal based on its actual structure;

[0119] S200, setting a sensor assembly in a to-be-monitored area of ​​a port terminal structure;

[0120] S300, collecting structural information and environmental information, where the structural information includes pressure value, vibration value and inclination angle, and the environmental information includes water level value and wind speed;

[0121] S400, calculating the initial value of the structural assessment through the pressure value and the vibration value when the structure is loaded, judging whether to adjust the initial value of the structural assessment through the inclination angle when the structure is loaded, and if it is judged that adjustment is required, calculating the inclination angle influence value according to the pressure value, the inclination angle when not loaded, and the inclination angle when loaded, and adjusting the initial value of the structural assessment according to the inclination angle influence value to obtain the final value of the structural assessment;

[0122] S500, calculating the initial value of environmental assessment by the water level value, judging whether to adjust the initial value of environmental assessment according to the wind speed, and if it is necessary to adjust, calculating the wind impact value according to the wind speed and the absolute value of the wind speed change per unit time, and adjusting the initial value of environmental assessment according to the wind impact value to obtain the final value of environmental assessment;

[0123] S600. Obtain a structural safety assessment value according to the structural assessment final value and the environmental assessment final value, and divide the structural safety assessment level according to the structural safety assessment value.

[0124] It can be understood that the present invention significantly improves the efficiency and accuracy of port structure safety monitoring. First, a digital twin model is established through three-dimensional modeling technology, which lays the foundation for subsequent evaluation. After the sensor assembly is set up, key structural information and environmental information, such as pressure, vibration, inclination, water level and wind speed, can be collected in real time to ensure the comprehensiveness of the data. During the evaluation process, the initial value is calculated by the pressure and vibration values ​​under the structural load, and dynamically adjusted according to the inclination, so that the evaluation is closer to the actual working conditions. At the same time, changes in environmental factors such as water level and wind speed are also taken into consideration, and the initial value of the environmental assessment is adjusted in real time by calculating the wind impact value. This method ensures the accuracy of the structural safety assessment value and provides a scientific basis for the classification of safety levels. Overall, this evaluation method improves the safety management level of port terminals to cope with possible safety hazards, promotes the sustainability of port operations, reduces the risk of safety accidents, and provides strong support for ensuring the stable operation of ports.

[0125] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0126] The present application is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0127] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0128] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0129] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does 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 port terminal structure safety assessment system based on digital twins, characterized in that: include: A model building module is configured to build a digital twin model of the port terminal according to its actual structure through three-dimensional modeling technology; A sensor assembly, including a pressure sensor, a vibration sensor, an inclination sensor, a water level sensor and a wind sensor, wherein the sensor assembly is arranged in a to-be-monitored area of ​​the port terminal structure; A collection module configured to collect structural information and environmental information, wherein the structural information includes a pressure value, a vibration value and an inclination angle, and the environmental information includes a water level value and a wind speed; A structure evaluation module is configured to calculate an initial structure evaluation value through a pressure value and a vibration value when the structure is loaded, determine whether to adjust the initial structure evaluation value through an inclination angle when the structure is loaded, and if it is determined that adjustment is required, calculate an inclination angle influence value according to the pressure value, the inclination angle when not loaded, and the inclination angle when loaded, and adjust the initial structure evaluation value according to the inclination angle influence value to obtain a final structure evaluation value; The environmental assessment module is configured to calculate an initial environmental assessment value through a water level value, determine whether to adjust the initial environmental assessment value according to the wind speed, and if it is determined that adjustment is required, calculate a wind impact value according to the wind speed and an absolute value of a wind speed change per unit time, and adjust the initial environmental assessment value according to the wind impact value to obtain a final environmental assessment value; The grade assessment module is configured to obtain a structural safety assessment value according to the structural assessment final value and the environmental assessment final value, and to divide the structural safety assessment grade according to the structural safety assessment value.

2. The port terminal structure safety assessment system based on digital twin according to claim 1 is characterized in that: The structural assessment module is configured to calculate the initial value of structural assessment through the pressure value and the vibration value when the structure is loaded, including: A list of maximum vibration values ​​corresponding to load pressure values ​​and standard structural assessment initial values ​​are preset, and when the actual vibration value is less than or equal to the maximum vibration value corresponding to the actual pressure value in the list, the structural assessment initial value is the standard structural assessment initial value; When the actual vibration value is greater than the maximum vibration value corresponding to the pressure value in the list, the initial value of the structural evaluation is calculated according to the difference between the actual vibration value and the maximum vibration value and the actual pressure value by the following formula: S = S0-k*[Vs-Vmax(P)]*P; In the above formula, S represents the initial value of the structural assessment, S0 represents the initial value of the standard structural assessment, k represents the influence coefficient of the difference between the actual vibration value and the maximum vibration value, and the value range of k is 0-1. When the actual vibration value is less than or equal to the maximum vibration value corresponding to the actual pressure value in the list, k=0, Vs represents the actual vibration value, Vmax(P) represents the maximum vibration value corresponding to the pressure value in the list, and P represents the actual pressure value.

3. The port terminal structure safety assessment system based on digital twin according to claim 2 is characterized in that: When the structure assessment module is configured to determine whether to adjust the initial value of the structure assessment according to the inclination angle of the structure under load, it includes: Setting a maximum inclination angle, if the inclination angle of the structure under load is less than the maximum inclination angle, it is determined that there is no need to adjust the initial value of the structure assessment; If the inclination angle of the structure when loaded is greater than or equal to the maximum inclination angle, it is determined that the initial value of the structure assessment needs to be adjusted.

4. The port terminal structure safety assessment system based on digital twin according to claim 3 is characterized in that: The structural assessment module is configured to calculate the inclination impact value based on the pressure value, the inclination angle when not loaded, and the inclination angle when loaded, if it is determined that adjustment is required, including: The inclination angle influence value is calculated by the following formula: Iθ=c*P*(θ1-θ0); In the above formula, Iθ represents the inclination angle influence value, c represents the influence coefficient of the inclination angle on the initial value of the structural assessment, the value range of c is (0, 1], P represents the actual pressure value, θ1 represents the inclination angle under load, and θ0 represents the inclination angle under no load.

5. The port terminal structure safety assessment system based on digital twin according to claim 4 is characterized in that: The structure assessment module is configured to adjust the structure assessment initial value according to the inclination angle influence value to obtain the structure assessment final value, including: The final value of the structure evaluation is calculated by the following formula: Sz = S - Iθ; In the above formula, Sz represents the final value of the structural assessment, S represents the initial value of the structural assessment, and Iθ represents the inclination angle influence value.

6. The port terminal structure safety assessment system based on digital twin according to claim 5 is characterized in that: When the environmental assessment module is configured to calculate the initial environmental assessment value through the water level value, it includes: Set the maximum water level and the standard environmental assessment initial value. If the water level is less than the maximum water level, the environmental assessment initial value is the standard environmental assessment initial value. If the water level value is greater than or equal to the maximum water level, the initial environmental assessment value is calculated according to the difference between the water level value and the maximum water level using the following formula: H = H0 - (W - Wmax) * a; In the above formula, H represents the initial value of environmental assessment, W represents the water level value, Wmax represents the maximum water level, a represents the water level influence coefficient, and the value range of a is 0-1.

7. The digital twin-based port terminal structure safety assessment system according to claim 6 is characterized in that: When the environmental assessment module is configured to determine whether to adjust the environmental assessment initial value according to the wind speed, it includes: Setting a safe wind speed threshold, if the current wind speed is less than or equal to the safe wind speed threshold, then determining not to adjust the environmental assessment initial value; If the current wind speed is greater than the safety wind speed threshold, it is determined that the initial value of the environmental assessment should be adjusted.

8. The digital twin-based port terminal structure safety assessment system according to claim 7 is characterized in that: The environmental assessment module is configured to calculate the wind impact value according to the wind speed and the absolute value of the wind speed change per unit time if it is determined that adjustment is needed, and adjust the environmental assessment initial value according to the wind impact value to obtain the environmental assessment final value, including: The wind speed difference between the wind speed and the safety wind speed threshold and the absolute value of the wind speed change per unit time are calculated, and the wind force impact value is calculated according to the wind speed difference and the absolute value of the wind speed change by the following formula: If=b*ΔV*|ΔVb|; In the above formula, If represents the wind force influence value, b represents the wind force influence coefficient, the value range of b is (0,0.5], ΔV represents the wind speed difference, |ΔVb| represents the absolute value of the wind speed change; The final environmental assessment value is calculated by the following formula: Hz = H - If; In the above formula, Hz represents the final value of environmental assessment, H represents the initial value of environmental assessment, and If represents the wind impact value.

9. The digital twin-based port terminal structure safety assessment system according to claim 8 is characterized in that: The grade assessment module is configured to obtain a structural safety assessment value according to the structural assessment final value and the environmental assessment final value, and to divide the structural safety assessment grade according to the structural safety assessment value, including: The structural safety assessment value is obtained by weighted summing the final value of the structural assessment and the final value of the environmental assessment through the following formula: J = α*Sz + β*Hz; In the above formula, J represents the structural safety assessment value, α represents the weight coefficient of the final value of the structural assessment, Sz represents the final value of the structural assessment, β represents the weight coefficient of the final value of the environmental assessment, Hz represents the final value of the environmental assessment, where α+β=1; Set a first evaluation value, a second evaluation value, first-level security, second-level security and third-level security; wherein the first evaluation value is greater than the second evaluation value, and the security levels are first-level security, second-level security and third-level security from high to low; If the structural safety assessment value is greater than the first assessment value, the safety level is level one safety; If the structural safety assessment value is less than or equal to the first assessment value, and greater than or equal to the second assessment value, the safety level is level 2 safety; If the structural safety assessment value is less than the second assessment value, the safety level is level three safety.

10. A port terminal structure safety assessment method based on digital twins, applied to the port terminal structure safety assessment system based on digital twins as claimed in any one of claims 1 to 9, characterized in that: include: Through 3D modeling technology, a digital twin model of the port terminal is established based on its actual structure; Setting up sensor components in the area to be monitored on the port terminal structure; Collecting structural information and environmental information, wherein the structural information includes pressure value, vibration value and inclination angle, and the environmental information includes water level value and wind speed; Calculate the initial value of structural evaluation by the pressure value and vibration value when the structure is loaded, determine whether to adjust the initial value of structural evaluation by the inclination angle when the structure is loaded, and if it is determined that adjustment is required, calculate the inclination angle influence value according to the pressure value, the inclination angle when not loaded, and the inclination angle when loaded, and adjust the initial value of structural evaluation according to the inclination angle influence value to obtain the final value of structural evaluation; Calculate the initial value of environmental assessment through the water level value, determine whether to adjust the initial value of environmental assessment according to the wind speed, and if it is determined that adjustment is required, calculate the wind impact value according to the wind speed and the absolute value of the wind speed change per unit time, and adjust the initial value of environmental assessment according to the wind impact value to obtain the final value of environmental assessment; A structural safety assessment value is obtained according to the structural assessment final value and the environmental assessment final value, and a structural safety assessment grade is divided according to the structural safety assessment value.

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