Industrial large-span space structure health monitoring method, device, equipment, medium and product

Abstract

The embodiment of the invention provides an industrial large-span space structure health monitoring method, device and equipment, a medium and a product, and relates to the field of structure monitoring. The method comprises the following steps: acquiring action information obtained by monitoring an industrial large-span space structure, inputting the action information into a first structure model to obtain a calculated stress value of each rod piece, determining a correction coefficient by combining an actually measured stress value of a to-be-monitored rod piece so as to determine a corrected second structure model, and monitoring a result by combining the action information so as to obtain the stress value of each rod piece. And calculating a target simulation stress value, close to the actual stress condition, of each rod piece so as to perform health monitoring on the industrial large-span space structure. After the structural model of the industrial large-span space structure is corrected, environmental monitoring for monitoring action information of a part of areas is taken as a main part, and the structural model is combined, so that the problem that the health condition is difficult to accurately judge only through environmental monitoring is avoided, the cost of health monitoring is greatly reduced, and the health monitoring efficiency is improved. The method is efficient, convenient and feasible to implement.

Description

Technical Field

[0001] The present application relates to the field of structural monitoring, and particularly to a method, device, equipment, medium and product for health monitoring of large-span industrial space structures. Background Art

[0002] With the demands of industrial upgrading and process transformation, the span of large-span space structures is continuously increasing, and safety issues have gradually attracted attention. The forces on large-span space structures are complex. The existing health monitoring of large-span space structures is achieved based on three aspects: structural dynamic characteristics, structural static characteristics, and environmental load identification. Structural information is obtained by arranging acceleration sensors, strain sensors, wind speed and wind pressure sensors, etc., and the stress and strain monitoring of key components is mainly carried out, supplemented by dynamic characteristic monitoring and environmental monitoring.

[0003] However, for large-span space structures applied in the industrial field, the attention paid to structural health monitoring is far less than that of public buildings. Most existing large-span industrial space structures were not subjected to structural tests during design, such as wind tunnel tests, etc., and the understanding of the environmental effects on the structure is not deep. Moreover, due to the large number of members in large-span industrial space structures, it is impossible to use the stress and strain monitoring of key members as the main monitoring means according to the existing health monitoring methods for public buildings.

[0004] Therefore, a monitoring method suitable for large-span industrial space structures is urgently needed to be proposed. Summary of the Invention

[0005] Based on the above technical problems, the embodiments of the present application provide a method, device, equipment, medium and product for health monitoring of large-span industrial space structures, aiming to conduct practical and more cost-effective health monitoring for large-span industrial space structures.

[0006] The first aspect of the embodiments of the present application provides a method for health monitoring of large-span industrial space structures, and the method includes: Obtain the action information obtained by monitoring the large-span industrial space structure, and the action information at least includes: wind load, snow load, temperature action, and support displacement; Input the action information into the first structural model corresponding to the large-span industrial space structure to obtain the calculated stress values received by each member in the first structural model; Based on the measured stress value of the member to be monitored and the calculated stress value of the member to be monitored, determine a correction coefficient, and the member to be monitored is at least one of the members; According to the correction coefficient, correct the first structural model to obtain a second structural model; Calculate the target simulation stress values of the respective members according to the second structural model and the monitoring results of the action information, and perform health monitoring on the industrial long-span space structure according to the target simulation stress values.

[0007] Optionally, before obtaining the action information obtained by monitoring the industrial long-span space structure, it includes: Build the original structural model of the industrial long-span space structure according to the design information of the industrial long-span space structure; Detect the industrial long-span space structure, and the detection at least includes: space structure detection, member size detection, corrosion degree detection; Modify the original structural model according to the detection results to determine the first structural model of the industrial long-span space structure after modification.

[0008] Optionally, obtaining the action information obtained by monitoring the industrial long-span space structure includes: Determine the monitoring plan for the industrial long-span space structure, and the monitoring plan at least includes: wind load monitoring, snow load monitoring, temperature action monitoring, support displacement monitoring, control member monitoring; Determine the test area to be monitored according to the monitoring plan, and set monitoring equipment in the test area, and the monitoring equipment at least includes: sensors; Determine the action information of the industrial long-span space structure according to the monitoring results of the monitoring equipment.

[0009] Optionally, modifying the first structural model according to the correction coefficient to obtain the second structural model includes: Obtain the corrected simulation stress value of the unmonitored member according to the correction coefficient and the calculated stress value of the unmonitored member; Determine the corrected simulation stress values of the respective members of the industrial long-span space structure according to the measured stress value of the member to be monitored and the corrected simulation stress value of the unmonitored member; Determine the second structural model of the industrial long-span space structure according to the corrected simulation stress values of the respective members.

[0010] Optionally, calculating the target simulation stress values of the respective members according to the second structural model and the monitoring results of the action information, and performing health monitoring on the industrial long-span space structure according to the target simulation stress values includes: Set the member monitoring level, and the member monitoring level at least includes: first risk level, second risk level; Calculate the target simulation stress values of the respective members in the industrial long-span space structure under the action information according to the second structural model and the monitoring results of the action information; Determine the monitoring levels of the respective members according to the target simulated stress values; Perform health monitoring and analysis on the industrial large-span space structure according to the proportion of the number of members in each member monitoring level.

[0011] Optionally, the method further includes: Obtain weather prediction information of the area where the industrial large-span space structure is located, and the weather prediction information at least includes: wind force, wind speed, snowfall, temperature change; Estimate the action information of the industrial large-span space structure according to the weather prediction information, and calculate the predicted simulated stress values of the respective members; Determine the monitoring levels of the respective members according to the predicted simulated stress values; Perform risk warning on the industrial large-span space structure according to the proportion of the number of members in each member monitoring level.

[0012] A second aspect of the embodiments of the present application provides a health monitoring device for an industrial large-span space structure, and the device includes: An action information acquisition module, configured to acquire action information obtained by monitoring the industrial large-span space structure, and the action information at least includes: wind load, snow load, temperature action, and support displacement; A calculated stress value determination module, configured to input the action information into a first structural model corresponding to the industrial large-span space structure to obtain the calculated stress values received by the respective members in the first structural model; A correction factor determination module, configured to determine a correction factor based on the measured stress value and the calculated stress value of the member to be monitored, and the member to be monitored is at least one of the respective members; A second structural model determination module, configured to correct the first structural model according to the correction factor to obtain a second structural model; A target simulated stress value calculation module, configured to calculate the target simulated stress values of the respective members according to the second structural model and the monitoring result of the action information, and perform health monitoring on the industrial large-span space structure according to the target simulated stress values.

[0013] Optionally, the health monitoring device for the industrial large-span space structure further includes: An original structural model building module, configured to build an original structural model of the industrial large-span space structure according to the design information of the industrial large-span space structure; A structure detection module, configured to detect the industrial large-span space structure, and the detection at least includes: space structure detection, member size detection, corrosion degree detection; The first structural model correction module is used to correct the original structural model according to the detection result and determine the first structural model of the industrial long-span space structure after correction.

[0014] Optionally, the action information acquisition module includes: The monitoring plan determination sub-module is used to determine the monitoring plan of the industrial long-span space structure. The monitoring plan at least includes: wind load monitoring, snow load monitoring, temperature action monitoring, support displacement monitoring, and control member monitoring; The test area determination sub-module is used to determine the test area to be monitored according to the monitoring plan and set monitoring equipment in the test area. The monitoring equipment at least includes: sensors; The action information determination sub-module is used to determine the action information of the industrial long-span space structure according to the monitoring result of the monitoring equipment.

[0015] Optionally, the second structural model determination module includes: The corrected simulation stress value calculation sub-module is used to obtain the corrected simulation stress value of the unmonitored member according to the correction coefficient and the calculated stress value of the unmonitored member; The corrected simulation stress value determination sub-module is used to determine the corrected simulation stress value of each member of the industrial long-span space structure according to the measured stress value of the member to be monitored and the corrected simulation stress value of the unmonitored member; The second structural model correction sub-module is used to determine the second structural model of the industrial long-span space structure according to the corrected simulation stress value of each member.

[0016] Optionally, the target simulation stress value calculation module includes: The monitoring level setting sub-module is used to set the member monitoring level. The member monitoring level at least includes: the first risk level, the second risk level; The target simulation stress value calculation sub-module is used to calculate the target simulation stress value of each member in the industrial long-span space structure under the action information according to the second structural model and the action information monitoring result; The member monitoring level determination sub-module is used to determine the member monitoring level of each member according to the target simulation stress value; The health monitoring analysis sub-module is used to perform health monitoring analysis on the industrial long-span space structure according to the proportion of the number of members in each member monitoring level.

[0017] Optionally, the target simulation stress value calculation module further includes: A weather prediction information acquisition sub-module for acquiring weather prediction information of the area where the industrial long-span space structure is located, the weather prediction information at least including: wind force, wind speed, snowfall, temperature change; An expected simulation stress value calculation sub-module for predicting the action information of the industrial long-span space structure according to the weather prediction information and calculating the expected simulation stress values of the respective members; A member monitoring level determination sub-module for determining the member monitoring levels of the respective members according to the expected simulation stress values; A risk warning sub-module for performing risk warning on the industrial long-span space structure according to the proportion of the number of members in each member monitoring level.

[0018] A third aspect of the embodiments of the present application provides an electronic device, the electronic device including: a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the computer program is executed by the processor, it implements the industrial long-span space structure health monitoring method of the first aspect of the embodiments of the present application.

[0019] A fourth aspect of the embodiments of the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the industrial long-span space structure health monitoring method of the first aspect of the embodiments of the present application.

[0020] A fifth aspect of the embodiments of the present application provides a computer program product, including a computer program, and when the computer program is executed by a processor, it implements the industrial long-span space structure health monitoring method of the first aspect of the embodiments of the present application.

[0021] Through the industrial long-span space structure health monitoring method of the embodiments of the present application, for an industrial long-span space structure, its action information is monitored and obtained, and then according to the structural model of the industrial long-span space structure and in combination with the action information, the calculated stress values of the respective members in the model are calculated. Then, stress tests are performed on some members, and according to the difference between the measured stress value and the calculated stress value, a correction coefficient for the calculated stress value is determined, and the calculated stress values of all members in the first structural model are corrected according to the correction coefficient to obtain a corrected second structural model. Finally, after obtaining the action information of the monitoring area of the industrial long-span space structure according to the monitoring result of the action information, it is applied to the corrected second structural model, and the target simulation stress values of all members after being subjected to the action information are calculated according to the second structural model and the action information monitoring result, and the target simulation stress values are regarded as the actual stress conditions of the respective members, and based on this, the health monitoring of the industrial long-span space structure is realized.

[0022] In this application, different from the method of monitoring key members in the related art, preparation for health monitoring is carried out by modifying the structural model of the industrial large-span space structure. After obtaining the modified second structural model, only partial areas of the industrial large-span space structure need to be monitored for action information, greatly reducing the cost of health monitoring of the industrial large-span space structure. Moreover, by applying the monitoring results to the modified second structural model, the stress conditions of all members under this action information are calculated, and this is used as the basis for health monitoring of the industrial large-span space structure. This method mainly focuses on environmental monitoring and combines the model of the industrial large-span space structure itself, avoiding the problem that it is difficult to accurately judge the health status of the industrial large-span space structure only by simple environmental monitoring. The method is efficient, convenient, and practical to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 is a flowchart of a method for health monitoring of an industrial large-span space structure proposed by an embodiment of the present application; Figure 2 is an implementation block diagram of a method for health monitoring of an industrial large-span space structure proposed by an embodiment of the present application; Figure 3 is a structural block diagram of a health monitoring device for an industrial large-span space structure provided by an embodiment of the present application; Figure 4 is a schematic diagram of an electronic device shown by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0026] In the drawings, for the sake of clarity, the sizes of the constituent elements, the thicknesses of the layers, or the areas may sometimes be exaggerated. Therefore, any implementation of the present disclosure is not necessarily limited to the dimensions shown in the figures, and the shapes and sizes of the components in the drawings do not reflect the true proportions. In addition, the drawings schematically show ideal examples, and any implementation of the present disclosure is not limited to the shapes or values shown in the drawings.

[0027] Due to the complex stress conditions of long-span spatial structures, in the related art, the methods for health monitoring of long-span spatial structures are usually applied in the field of public buildings, such as large stadiums, terminals and other public buildings. These public long-span spatial structures have unique shapes and obvious styles, and their building structures are specially designed. The health monitoring methods applied to them are usually only applicable to their specific structures and are difficult to be universal, making it inconvenient for other building structures to draw on; moreover, most public buildings consider the impact of action information on the structure during the design stage and have conducted relevant tests on action information before construction for verification, such as wind tunnel tests. They have a certain understanding of the distribution of action information on the structure and can determine the key members in the structure for targeted monitoring. However, for industrial long-span spatial structures, the attention paid to action information during the construction process is much lower than that of public buildings. Most industrial long-span spatial structures have not conducted relevant tests on action information and have a relatively poor understanding of environmental actions, making it inconvenient to directly draw on the health monitoring methods of public buildings.

[0028] Moreover, the applications of industrial long-span spatial structures involve multiple industrial sectors. Many industrial long-span spatial structures have a long construction history, and the building codes implemented during design and construction are not the same, resulting in a large difference in their reliability levels. In addition, due to long-term use, their structures are affected by adverse factors such as environmental erosion, material aging, fatigue effects, and disaster effects. The problems faced in their health monitoring are different from those of public buildings.

[0029] Therefore, in view of the problems faced in the health monitoring of industrial long-span spatial structures in the related art, a practical and more cost-effective health monitoring method for industrial long-span spatial structures is proposed in this application. For details, please refer to Figure 1 , Figure 1 is a flowchart of a health monitoring method for an industrial long-span spatial structure proposed in an embodiment of this application. As Figure 1 shown, the method may include steps S101 to S105: Step S101: Obtain the action information obtained by monitoring the industrial long-span spatial structure, where the action information at least includes: wind load, snow load, temperature action, and support displacement; Step S102: Input the action information into the first structural model corresponding to the industrial long-span space structure to obtain the calculated stress values received by each member in the first structural model; Step S103: Determine a correction coefficient based on the measured stress value of the member to be monitored and the calculated stress value of the member to be monitored, where the member to be monitored is at least one of the various members; Step S104: Correct the first structural model according to the correction coefficient to obtain a second structural model; Step S105: Calculate the target simulation stress values of the various members according to the second structural model and the monitoring result of the action information, and perform health monitoring on the industrial long-span space structure according to the target simulation stress values.

[0030] In the embodiments of the present application, the industrial long-span space structure that needs to be subjected to health monitoring generally refers to a long-span space structure built in industrial scenarios such as coal sheds, material sheds, and large-span roofs. Since most of them are structures that have been built and are in use, they do not have the conditions for conducting action information tests during the design stage, and the industrial long-span space structure involves a large number of members and has a complex structure. Therefore, the health monitoring method proposed in the present application is a method of inferring and then performing health monitoring on the entire industrial long-span space structure based on the conditions of a part of the members. The execution process can be generally divided into two stages, the preliminary preparation stage and the health monitoring stage. First, for the preliminary preparation stage, it is necessary to model the industrial long-span space structure, and actually monitor the action information of the industrial long-span space structure, and apply the monitored action information to the first structural model of the industrial long-span space to obtain the calculated stress values of each member in the structure. At the same time, actually perform stress detection on a part of the members to obtain the measured stress values. By comparing the measured stress values with the calculated stress values, the correction coefficient of the industrial long-span space structure model is obtained. The correction coefficient can reflect the damage situation of each member under the influence of the action information during the use of the industrial long-span space structure to be monitored. Correct the first structural model of the industrial long-span space structure according to the damage situation, so as to obtain the internal force condition of each member in the industrial long-span space structure that is closest to the true value under the action information, and then determine the corrected second structural model, further reducing the error of the structural model.

[0031] In the health monitoring stage, only based on the monitoring results of the action information set around the industrial long-span space structure, the target simulation stress values of each member under the action information can be calculated through the second structural model of the industrial long-span space structure in the preparation stage, that is, the actual force values of each member after being actually affected by the action information. Thus, health monitoring and analysis of the industrial long-span space structure can be carried out. According to whether the force conditions of each member exceed its bearing capacity under the influence of the action information and whether the force conditions of each member will affect the industrial long-span space structure, etc., the health condition of the industrial long-span space structure can be determined.

[0032] After making preparations in this way, a monitoring area for action information is set at a specified position around the industrial long-span space structure. By applying the action information in the environment to the industrial long-span space structure model, the health monitoring cost brought by the internal force monitoring of key members is avoided, and the force conditions of all members in the industrial long-span space structure can be deduced, effectively carrying out health monitoring of the industrial long-span space structure.

[0033] Step S101: Obtain the action information obtained by monitoring the industrial long-span space structure, where the action information at least includes: wind load, snow load, temperature action, and support displacement.

[0034] In the embodiments of the present application, the action information refers to the actions received by the industrial long-span space structure, including but not limited to: wind load, snow load, temperature action, and support displacement. First, according to the respective characteristics of different industrial long-span space structures, the areas to be monitored and the corresponding monitoring methods are selected, and sensors, etc. are arranged to collect the action information conditions of each monitoring area of the industrial long-span space structure to be monitored.

[0035] Specifically, wind load is the pressure or suction generated by the wind acting on the surface of the structure, which may cause structural vibration or damage to the structure. It is measured by sensors arranged on the surface of the structure, such as thin-film pressure sensors, to measure the surface wind pressure. Snow load is the vertical load generated by the weight of the accumulated snow on the surface of the long-span space structure. It may cause structural damage due to local overloading. The thickness of the accumulated snow is monitored by arranging sensors on the surface of the long-span space structure, such as snow depth sensors, and the thickness of the accumulated snow is monitored by ultrasonic or laser ranging. Temperature effect is the internal force and additional stress generated by the deformation of the structure caused by the change of environmental temperature, which may cause structural deformation or joint failure of the industrial long-span space structure. It is measured by arranging sensors on the surface of the structure, such as temperature sensors, or by using infrared thermal imaging to detect the temperature distribution, etc. Support displacement is the horizontal, vertical or rotational change of the structure support caused by factors such as foundation settlement, temperature deformation, and external force. It may change the internal force distribution in the structure. Moreover, for the industrial long-span space structure, a small displacement may be amplified to produce significant deformation. The supports of the industrial long-span space structure can be monitored by sensors, level gauges, and inclinometers, etc. to check whether the structure supports have displacement or rotation.

[0036] Step S102: Input the action information into the first structural model corresponding to the industrial long-span space structure to obtain the calculated stress values received by each member in the first structural model.

[0037] In the embodiment of the present application, the action information is applied to the first structural model of the industrial long-span space structure to be monitored, and the stress conditions generated by each member in the industrial long-span space structure under the influence of the action information in the ideal state are calculated and recorded as the calculated stress values.

[0038] Step S103: Determine a correction coefficient based on the measured stress value and the calculated stress value of the member to be monitored, where the member to be monitored is at least one of each member.

[0039] In the embodiment of the present application, while setting the monitoring of the action information, it is also necessary to select a part of the members in the industrial long-span space structure as the members to be monitored. By measuring the stress conditions generated by the members to be detected under the influence of the action information, the measured stress values are obtained. Specifically, strain sensors can be arranged on the members to be monitored to obtain the stress conditions of the members to be monitored. By comparing the measured stress values actually received by the members to be monitored with the calculated stress values obtained through model calculation, the correction coefficient for the industrial long-span space structure model can be obtained, that is, the stress conditions of each member in the first structural model after receiving the action information are corrected, so that the stress conditions of each member calculated by the model are closer to the actual situation.

[0040] Optionally, since there are multiple action information and the impacts that each action information may generate are not the same, the structural model of the industrial long-span space structure can be further improved by measuring multiple times under different conditions. For example, for the impact generated by snow load, the stress conditions of the monitored members under different snow accumulation degrees can be measured to determine the possible impact of snow load on the industrial long-span space structure at different snowfall amounts. Further, due to the shape influence of the industrial long-span space structure and the fact that wind may affect the distribution of snow accumulation, the impact of uneven snow distribution on the snow load of the industrial long-span space structure also needs to be considered during monitoring. By collecting data under various conditions, the correction coefficient of the industrial long-span space structure model can be further improved, making the calculated stress conditions of other members closer to the true values and improving the accuracy of health monitoring.

[0041] Step S104: Modify the first structural model according to the correction coefficient to obtain a second structural model.

[0042] In the embodiment of the present application, since the number of members in the industrial long-span space structure is huge and it is impossible to monitor the stress conditions of each member, the correction coefficient calculated through the actual measurement of a part of the monitored members is used to correspondingly correct the calculated stress values of each member in the first structural model, so as to obtain the simulated stress values of each member in the structure under the monitored action information, and then the first structural model is corrected to obtain a second structural model closer to the actual situation.

[0043] Step S105: Calculate the target simulated stress values of each member according to the second structural model and the monitoring results of the action information, and perform health monitoring on the industrial long-span space structure according to the target simulated stress values.

[0044] In the embodiment of the present application, after completing the preliminary preparation work and modifying the structural model of the industrial long-span space structure, health monitoring of the industrial long-span space structure can be carried out. Among them, by monitoring the action information received by the industrial long-span space structure during use and applying it to the modified second structural model, the target simulated stress values received by each member are calculated. Since it is a modified structural model, it can be considered that the target simulated stress values reflect the actual stress conditions received by each member in the industrial long-span space structure. Based on this, it is judged whether the industrial long-span space structure will generate risks due to the received action information, which is convenient for maintenance personnel to analyze the health status and take different countermeasures according to different situations.

[0045] Combined with the above embodiments, in one implementation, the present application further provides an industrial long-span space structure health monitoring method. Before obtaining the action information obtained by monitoring the industrial long-span space structure, it specifically includes the following contents: First, it is necessary to build the original structure model of the industrial long-span space structure according to the design information of the industrial long-span space structure. For the previously built industrial long-span space structures, there may only be paper drawings or the description of the structural design is relatively brief. It is necessary to build the model of the industrial long-span space structure to be monitored to the greatest extent according to the design information during its construction. The more accurate and closer the built original structure model is to the actual situation, the more accurate the subsequent correction of the model and the health monitoring of the industrial long-span space structure will be.

[0046] Then, the industrial long-span space structure is detected. The detection at least includes: space structure detection, member size detection, and rust degree detection. For industrial long-span space structures, due to their application in industrial scenarios and different historical construction periods, the building codes they refer to are also different. Therefore, there may be a large difference between the actual situation and the original design information. After completing the modeling of the industrial long-span space structure according to the design information, it is necessary to actually detect and identify the industrial long-span space structure to be monitored. Whether the construction of its space structure is consistent with the design drawings, whether the selected member sizes are strictly implemented according to the design drawings, and whether there are errors in the members, etc., all need to be strictly compared. And due to the passage of time, there may be different degrees of rust on the original structure, as well as damage caused by previous action information. These situations will affect the original performance of the members, resulting in the force condition not conforming to the situation considered in the design stage. Therefore, it is necessary to conduct on-site detection of the industrial long-span space structure to be monitored to confirm its current situation.

[0047] Finally, the original structure model is corrected according to the detection results to determine the first structure model of the industrial long-span space structure after correction. After completing the detection, the detection results are compared with the design information. For the changed parts, corrections are made in the model originally built according to the design information, so as to obtain the first structure model of the industrial long-span space structure that conforms to the current actual situation and is used to calculate the structural stress by applying the action information subsequently.

[0048] Combined with the above embodiments, in one implementation, the present application further provides an industrial long-span space structure health monitoring method. Obtaining the action information obtained by monitoring the industrial long-span space structure specifically includes the following contents: First, determine the monitoring plan for the industrial long-span space structure. The monitoring plan at least includes: wind load monitoring, snow load monitoring, temperature effect monitoring, support displacement monitoring, and reference member monitoring; Then, determine the test area to be monitored according to the monitoring plan, and set monitoring equipment in the test area. The monitoring equipment at least includes: sensors; In the embodiments of the present application, different monitoring plans need to be formulated for different industrial long-span space structures. According to the region where it is located and its usage, different monitoring plans are formulated according to different action information to ensure that the action information that the long-span space structure to be monitored may be affected during the actual application process can be accurately reflected. This includes the items to be monitored, such as wind load detection, snow load monitoring, temperature effect monitoring, and support displacement monitoring. It also includes the selection of reference members that may need to be monitored for comparison, and the selection of the monitored area should also be adapted to local conditions. For example, areas that may be affected by different action information need to be key monitored, and areas that are greatly affected by damage after being affected by action information also need to be key monitored. The monitoring plan proposed here can not only be applied in the preliminary preparation stage for the purpose of correcting the structural model of the industrial long-span space structure, but also in the subsequent health monitoring stage during the process of actually monitoring the action information of the industrial long-span space structure.

[0049] Specifically, due to the wide range of application scenarios and large quantity of industrial long-span space structures, different health monitoring schemes are required for different application scenarios, relevant structural specifications, and operation and maintenance requirements. For example, in areas with heavy snowfall in the north, the impact of snow load on industrial long-span space structures may rank first. Therefore, it is necessary to fully consider the possible impacts on the structure under different snowfall amounts. By increasing the monitoring area, the impacts of snow load on various parts and the actual stress conditions of each member can be comprehensively considered. In southern coastal areas and other places, there may be no snowfall, but the wind load has an obvious impact, and there may be extreme wind conditions such as typhoons. Therefore, a more detailed monitoring scheme for wind load is required. Areas such as the corners and eaves that are vulnerable to wind load need to be monitored emphatically, and the possible wind load impacts on industrial long-span space structures under extreme wind conditions should be considered based on local historical meteorological data. In mountainous areas, the temperature difference between day and night is large, the temperature change is obvious during the season change, and the temperature change amplitude caused by solar radiation is high. Therefore, the temperature effect will also have a significant impact on local industrial long-span space structures. The thermal expansion and contraction of structural materials caused by temperature changes need to be considered emphatically, and the dynamic changes also need to be considered for the monitoring of temperature effects. Therefore, a monitoring scheme for multiple time periods needs to be formulated to ensure coverage of various temperature change situations that industrial long-span space structures may be subjected to. For the displacement of the support, there may be various situations. First, industrial long-span space structures in earthquake-prone areas require more detailed monitoring of the support displacement. The ground motion has a greater impact on the structural support. In addition, the foundation conditions of the location where the industrial long-span space structure is set need to be considered, such as whether there is uneven soil quality and groundwater level changes. A targeted monitoring scheme for the support displacement needs to be formulated.

[0050] Finally, based on the monitoring results of the monitoring device, the action information of the industrial long-span space structure is determined.

[0051] In the example of this application, the actual and real action information acting on the industrial long-span space structure is collected by the monitoring device, and then this action information is applied to the first structural model of the constructed industrial long-span space structure through the structural model, so that the stress conditions of each member after the model is subjected to the action information can be obtained for comparison with the actual measured values.

[0052] Combined with the above embodiments, in one implementation manner, this application also provides a health monitoring method for industrial long-span space structures. The first structural model is corrected to obtain a second structural model according to the correction coefficient, which specifically includes the following content: Based on the correction coefficient and the calculated stress value of the unmonitored member, the corrected simulation stress value of the unmonitored member is obtained; Determine the corrected simulation stress values of each member of the industrial long-span space structure according to the measured stress values of the members to be monitored and the corrected simulation stress values of the unmonitored members. Determine the second structural model of the industrial long-span space structure according to the corrected simulation stress values of each member.

[0053] In the embodiment of the present application, after obtaining the correction coefficient, the unmonitored members other than the members to be monitored in the industrial long-span space structure to be monitored can be corrected according to the correction coefficient. The calculated stress values of the unmonitored members obtained from the first structural model after applying the action information are corrected by the correction coefficient on the basis of the calculated stress values to obtain the corrected simulation stress values of the unmonitored members. Thus, by combining the measured stress values of the members to be monitored and the corrected simulation stress values of the unmonitored members, the corrected simulation stress values of all members in the industrial long-span space structure to be monitored under the action of the monitored action information can be determined, which can be regarded as the actual stress conditions of each member under the action of this action information. Therefore, the corrected second structural model of the industrial long-span space structure to be monitored can be obtained, which can reflect the structural damage conditions of the industrial long-span space structure to be detected, is closer to the true value, and reduces the error of the model.

[0054] Combining the above embodiments, in one implementation manner, the present application further provides a health monitoring method for an industrial long-span space structure. Calculate the target simulation stress values of each member according to the second structural model and the monitoring results of the action information, and perform health monitoring on the industrial long-span space structure according to the target simulation stress values, which specifically includes the following contents: First, set the member monitoring levels, and the member monitoring levels at least include: the first risk level and the second risk level.

[0055] In the embodiment of the present application, there are a large number of members involved in the industrial long-span space structure, so certain standards are needed to limit its health monitoring. First, it is stipulated that the monitoring levels of each member have the first risk level and the second risk level. Optionally, the threshold for whether a member belongs to the first risk level or the second risk level can be set as the stress condition of the member. Those with a relatively small negative impact on the member itself and the overall structure according to the stress condition of the member are set as the low risk level, while those that may cause member deformation and thus affect the entire industrial long-span space structure are set as the high risk level. The specific division thresholds and grades can be set according to different industrial long-span space structures to be monitored, and the present application does not make any restrictions.

[0056] Then, calculate the target simulation stress values of each member in the industrial long-span space structure under the action information according to the second structural model and the monitoring results of the action information; Next, determine the member monitoring level of each member according to the target simulation stress value.

[0057] In the embodiment of the present application, after a series of preparatory work such as modeling, detecting, and correcting the industrial large-span space structure to be monitored is completed in the preliminary preparation stage, during the actual monitoring process, it is only necessary to monitor the action information received by the industrial large-span space structure according to the monitoring plan, and apply the collected action information to the corrected second structure model, then the target simulation stress value of each member approaching the true value can be calculated. By comparing them, it is determined which member monitoring level each member is in, so as to judge the influence degree of the action information it receives.

[0058] Finally, perform a health monitoring analysis on the industrial large-span space structure according to the proportion of the number of members in each member monitoring level.

[0059] In the embodiment of the present application, after obtaining the monitoring level of each member, a health monitoring analysis can be performed on the industrial large-span space structure. In an optional embodiment, the overall situation of the industrial large-span space structure can be determined by the proportion of the number of members in each monitoring level. For example, when the members in the high-risk level account for 2% of the total number of all members, and at the same time the members in the medium-risk level account for 10% of the total number of all members, it is considered that there is a risk in the industrial large-span space structure at this time, and immediate maintenance and treatment are required. The specific method for performing the health monitoring analysis can be adjusted according to the actual situation and is not restricted in the present application.

[0060] In an optional embodiment, the health analysis of the industrial large-span space structure can also be combined with the importance of the members. For example, among the members with a high importance level, if the monitoring level of 1 member reaches the high-risk level, it is necessary to immediately detect and process this member to avoid problems in the industrial large-span space structure caused by the damage or fracture of key members.

[0061] Combining the above embodiments, in one implementation manner, the present application also provides a method for health monitoring of an industrial large-span space structure. According to the second structure model and the monitoring results of the action information, calculate the target simulation stress value of each member, and perform health monitoring on the industrial large-span space structure according to the target simulation stress value. Specifically, it further includes the following content: Obtain the weather prediction information of the area where the industrial large-span space structure is located, and the weather prediction information at least includes: wind force, wind speed, snowfall, temperature change; Estimate the action information of the industrial large-span space structure according to the weather prediction information, and calculate the estimated simulation stress value of each member; Determine the member monitoring levels of the respective members according to the predicted simulation stress values; Perform risk warning on the industrial large-span space structure according to the proportion of the number of members in each member monitoring level.

[0062] In the embodiment of the present application, on the basis of health monitoring of the industrial large-span space structure according to the monitoring situation of action information, a method for warning the industrial large-span space structure is also proposed. Specifically, according to weather prediction information, such as weather forecasts, etc., the future weather conditions in the area where the large-span space structure to be monitored is located are obtained in advance, including whether it will be windy, wind force, wind speed, wind direction, etc., and whether there will be snowfall, estimated snowfall amount, start and end times, etc., and whether there will be a large increase or decrease in temperature within a short period of time, and whether it may face extreme weather such as typhoons. When the future weather is known in advance, the action information that the industrial large-span space structure to be monitored may suffer when a similar weather situation reappears can be known according to the historical weather conditions, and this is used as the input of the structural model and applied to the corrected second structural model of the industrial large-span space structure to calculate the predicted simulation stress values that each member may appear. Then, based on the member monitoring level and the monitoring plan, a judgment is made, and for situations that may cause damage to the industrial large-span space structure, a notice and warning are given in a timely manner.

[0063] Through the industrial large-span space structure health monitoring method proposed in the present application, not only can practical health monitoring be carried out on the large-span space structure applied to the industrial field, but also the operation cost is reduced compared with the method of continuously monitoring key members in the related technology. Moreover, early warning can be made for the possible structural damage risks according to the weather prediction information, which greatly improves the reliability of the industrial large-span space structure and is convenient for large-scale implementation and application.

[0064] In an optional embodiment, the industrial large-span space structure health monitoring method proposed in the present application can be implemented in the Figure 2 way. Figure 2 is the implementation block diagram of an industrial large-span space structure health monitoring method proposed in an embodiment of the present application. As Figure 2 shown, first, the industrial large-span space structure to be monitored is detected and identified, and a model is built according to the actual situation; then, a monitoring plan needs to be formulated, including: wind load monitoring, snow load monitoring, temperature action monitoring, support displacement monitoring, and reference member monitoring; then, the action information actually collected according to the monitoring plan is applied to the first structural model to obtain a corrected second structural model, and the force conditions of all members are calculated to complete the preliminary preparation work; finally, according to the actually monitored action information, the health status of the industrial large-span space structure is analyzed, and early warning is given in a timely manner according to the weather prediction information.

[0065] Based on the same inventive concept, an embodiment of the present application provides a health monitoring device for industrial large-span space structures. Refer to Figure 3 , Figure 3 which is a structural block diagram of the health monitoring device for industrial large-span space structures provided by an embodiment of the present application. As Figure 3 shown, the device includes: An action information acquisition module, configured to acquire action information obtained by monitoring the industrial large-span space structure, where the action information at least includes: wind load, snow load, temperature action, and support displacement; A calculated stress value determination module, configured to input the action information into a first structural model corresponding to the industrial large-span space structure to obtain the calculated stress values received by each member in the first structural model; A correction coefficient determination module, configured to determine a correction coefficient based on the measured stress value and the calculated stress value of the member to be monitored, where the member to be monitored is at least one of each member; A second structural model determination module, configured to correct the first structural model according to the correction coefficient to obtain a second structural model; A target simulation stress value calculation module, configured to calculate the target simulation stress values of each member according to the second structural model and the monitoring result of the action information, and perform health monitoring on the industrial large-span space structure according to the target simulation stress values.

[0066] Optionally, the health monitoring device for industrial large-span space structures further includes: An original structural model construction module, configured to construct an original structural model of the industrial large-span space structure according to the design information of the industrial large-span space structure; A structure detection module, configured to detect the industrial large-span space structure, where the detection at least includes: space structure detection, member size detection, corrosion degree detection; A first structural model correction module, configured to correct the original structural model according to the detection result to determine the corrected first structural model of the industrial large-span space structure.

[0067] Optionally, the action information acquisition module includes: A monitoring plan determination sub-module, configured to determine a monitoring plan for the industrial large-span space structure, where the monitoring plan at least includes: wind load monitoring, snow load monitoring, temperature action monitoring, support displacement monitoring, reference member monitoring; A test area determination sub-module, configured to determine a test area to be monitored according to the monitoring plan and set monitoring devices in the test area, where the monitoring devices at least include: sensors; An action information determination sub-module, configured to determine the action information of the industrial long-span space structure according to the monitoring results of the monitoring device.

[0068] Optionally, the second structural model determination module includes: A corrected simulation stress value calculation sub-module, configured to obtain the corrected simulation stress value of the unmonitored member according to the correction coefficient and the calculated stress value of the unmonitored member; A corrected simulation stress value determination sub-module, configured to determine the corrected simulation stress value of each member of the industrial long-span space structure according to the measured stress value of the member to be monitored and the corrected simulation stress value of the unmonitored member; A second structural model correction sub-module, configured to determine the second structural model of the industrial long-span space structure according to the corrected simulation stress value of each member.

[0069] Optionally, the target simulation stress value calculation module includes: A monitoring level setting sub-module, configured to set the member monitoring level, and the member monitoring level at least includes: a first risk level and a second risk level; A target simulation stress value calculation sub-module, configured to calculate the target simulation stress value of each member in the industrial long-span space structure under the action information according to the second structural model and the action information monitoring results; A member monitoring level determination sub-module, configured to determine the member monitoring level of each member according to the target simulation stress value; A health monitoring analysis sub-module, configured to perform health monitoring analysis on the industrial long-span space structure according to the proportion of the number of members in each member monitoring level.

[0070] Optionally, the target simulation stress value calculation module further includes: A weather prediction information acquisition sub-module, configured to acquire the weather prediction information of the area where the industrial long-span space structure is located, and the weather prediction information at least includes: wind force, wind speed, snowfall, temperature change; An expected simulation stress value calculation sub-module, configured to predict the action information of the industrial long-span space structure according to the weather prediction information and calculate the expected simulation stress value of each member; A member monitoring level determination sub-module, configured to determine the member monitoring level of each member according to the expected simulation stress value; A risk warning sub-module, configured to perform risk warning on the industrial long-span space structure according to the proportion of the number of members in each member monitoring level.

[0071] Based on the same inventive concept, another embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps in the industrial long-span space structure health monitoring method described in any of the above embodiments of the present application are implemented.

[0072] Based on the same inventive concept, another embodiment of the present application provides a computer program product, including a computer program / instructions. When the computer program / instructions are executed by a processor, the steps in the industrial long-span space structure health monitoring method described in any of the above embodiments of the present application are implemented.

[0073] Based on the same inventive concept, another embodiment of the present application provides an electronic device, as Figure 4 shown. Figure 4 FIG. is a schematic diagram of an electronic device shown in an embodiment of the present application. The electronic device includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes, the steps in the industrial long-span space structure health monitoring method described in any of the above embodiments of the present application are implemented.

[0074] For the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple. For the relevant parts, please refer to the partial description of the method embodiment.

[0075] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0076] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a device, or a computer program product. Therefore, the embodiments of the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the embodiments of the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program codes.

[0077] Embodiments of the present application are described with reference to the flowcharts and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing terminal devices generate a device for implementing the functions specified in one or more flows and / or blocks in the flow Figure 1 one or more flows and / or blocks Figure 1 or a device for implementing the functions specified in one or more blocks

[0078] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device implements the functions specified in one or more flows and / or blocks in the flow Figure 1 one or more flows and / or blocks Figure 1 or a device for implementing the functions specified in one or more blocks

[0079] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device, such that a series of operation steps are executed on the computer or other programmable terminal device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable terminal device provide steps for implementing the functions specified in one or more flows and / or blocks in the flow Figure 1 one or more flows and / or blocks Figure 1 or a device for implementing the functions specified in one or more blocks

[0080] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present application.

[0081] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising said element.

[0082] The above has introduced in detail a method, device, equipment, medium and product for health monitoring of industrial large-span space structures provided by the present application. Specific examples are used in this text to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. An industrial long-span space structure health monitoring method, characterized in that Including: Obtaining the action information obtained by monitoring an industrial long-span space structure, where the action information at least includes: wind load, snow load, temperature action, and support displacement; Inputting the action information into the first structural model corresponding to the industrial long-span space structure to obtain the calculated stress values received by each member in the first structural model; Based on the measured stress value of the member to be monitored and the calculated stress value of the member to be monitored, determining a correction coefficient, where the member to be monitored is at least one of the various members; According to the correction coefficient, correcting the first structural model to obtain a second structural model; According to the second structural model and the monitoring result of the action information, calculating the target simulation stress value of each member, and performing health monitoring on the industrial long-span space structure according to the target simulation stress value.

2. The industrial long-span space structure health monitoring method according to claim 1, characterized in that, Before obtaining the action information obtained by monitoring the industrial long-span space structure, it further includes: According to the design information of the industrial long-span space structure, building the original structural model of the industrial long-span space structure; Detecting the industrial long-span space structure, where the detection at least includes: space structure detection, member size detection, and corrosion degree detection; According to the detection result, correcting the original structural model to determine the first structural model after correction of the industrial long-span space structure.

3. The industrial long-span space structure health monitoring method according to claim 1, characterized in that Obtaining the action information obtained by monitoring the industrial long-span space structure includes: Determining the monitoring plan for the industrial long-span space structure, where the monitoring plan at least includes: wind load monitoring, snow load monitoring, temperature action monitoring, support displacement monitoring, and control member monitoring; Determining the test area to be monitored according to the monitoring plan, and setting monitoring equipment in the test area, where the monitoring equipment at least includes: sensors; According to the monitoring result of the monitoring equipment, determining the action information of the industrial long-span space structure.

4. The industrial long-span spatial structure health monitoring method according to claim 1, characterized in that According to the correction coefficient, correcting the first structural model to obtain a second structural model, including: According to the correction coefficient and the calculated stress value of the unmonitored member, obtaining the corrected simulation stress value of the unmonitored member; According to the measured stress value of the member to be monitored and the corrected simulation stress value of the unmonitored member, determining the corrected simulation stress value of each member of the industrial long-span space structure; According to the corrected simulation stress value of each member, determining the second structural model of the industrial long-span space structure.

5. The industrial large-span space structure health monitoring method according to claim 1, characterized in that, According to the second structural model and the monitoring result of the action information, calculating the target simulation stress value of each member, and performing health monitoring on the industrial long-span space structure according to the target simulation stress value, including: Setting the member monitoring level, where the member monitoring level at least includes: the first risk level, the second risk level; According to the second structural model and the monitoring result of the action information, calculating the target simulation stress value of each member in the industrial long-span space structure under the action information; According to the target simulation stress value, determining the member monitoring level of each member. Perform health monitoring and analysis on the industrial large-span space structure according to the proportion of the number of members in each member monitoring level.

6. The industrial long-span space structure health monitoring method according to claim 5, characterized in that, Including: Obtain the weather prediction information of the area where the industrial large-span space structure is located. The weather prediction information at least includes: wind force, wind speed, snowfall, and temperature change; Estimate the acting information of the industrial large-span space structure according to the weather prediction information, and calculate the estimated simulation stress values of the respective members; Determine the member monitoring level of each member according to the estimated simulation stress values; Perform risk warning on the industrial large-span space structure according to the proportion of the number of members in each member monitoring level.

7. An industrial long-span space structure health monitoring device, characterized in that, The device includes: An acting information acquisition module, configured to acquire the acting information obtained by monitoring the industrial large-span space structure. The acting information at least includes: wind load, snow load, temperature action, and support displacement; A calculated stress value determination module, configured to input the acting information into the first structural model corresponding to the industrial large-span space structure to obtain the calculated stress values received by each member in the first structural model; A correction factor determination module, configured to determine a correction factor based on the measured stress value and the calculated stress value of the member to be monitored, where the member to be monitored is at least one of the respective members; A second structural model determination module, configured to correct the first structural model according to the correction factor to obtain a second structural model; A target simulation stress value calculation module, configured to calculate the target simulation stress values of the respective members according to the second structural model and the acting information monitoring result, and perform health monitoring on the industrial large-span space structure according to the target simulation stress values.

8. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the computer program is executed by the processor, it implements the industrial large-span space structure health monitoring method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the industrial large-span space structure health monitoring method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the industrial large-span space structure health monitoring method according to any one of claims 1 to 6.

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