Automatic deformation monitoring system for steel-wood combined truss arch

Abstract

The invention relates to an automatic deformation monitoring system for a steel-wood combined truss arch, and belongs to the technical field of engineering structure deformation monitoring. The system comprises a reference monitoring point, a target monitoring point, a data acquisition device and a data processing device; the reference monitoring point is arranged in an area with stable geological conditions outside the target monitoring area, and a mark is arranged on the reference monitoring point; the target monitoring point is located on the truss, and a micro prism is fixedly arranged on the target monitoring point; the data acquisition device is in communication connection with the data processing device, and the data acquisition device obtains the position of the reference monitoring point and the position of the target monitoring point through the mark and the micro prism and uploads the position of the reference monitoring point and the position of the target monitoring point to the data processing device; an evaluation model is configured in the data processing device, and the evaluation model is adopted to process the position of the reference monitoring point and the position of the target monitoring point to obtain an evaluation result. The method has the effect of improving the accuracy of safety assessment of the arched truss.

Description

Technical Field

[0001] The present application relates to the technical field of engineering structure deformation monitoring, and in particular to an automatic deformation monitoring system for a steel-wood composite truss arch. Background Art

[0002] Steel-wood scaffolding is often used in exhibition halls. The current steel-wood scaffolding adopts a novel steel-wood composite structure. The main load-bearing component of the steel-wood scaffolding is the arch truss. The upper and lower chords of the main load-bearing components of the arch truss are made of wood structure, and the web is made of steel structure. Therefore, the main load-bearing component of the steel-wood scaffolding is the steel-wood composite arch truss.

[0003] Because the arch truss is the main load-bearing component of the steel-wood scaffolding, the deformation of the arch truss is one of the important parameters for evaluating whether the steel-wood scaffolding is safe. At present, in order to monitor the deformation of the arch truss, a radar monitoring station is set up outside the steel-wood scaffolding, but the installation position of the radar monitoring station is fixed and the measurement range is limited, so the radar monitoring method is difficult to apply to the environment where the special-shaped steel-wood scaffolding is located. There are also methods that collect images of the arch truss and obtain the deformation of the arch truss through image analysis, but the arch truss is a part of the steel-wood scaffolding. When the arch truss is photographed, there is interference information from other parts of the scaffolding, resulting in deviations in the deformation data of the arch truss calculated in the end, making the safety assessment of the arch truss less accurate.

[0004] Therefore, how to improve the accuracy of the safety assessment of the arch truss is of great significance for further evaluating the engineering quality of the steel-wood scaffolding and the subsequent maintenance and repair of the steel-wood scaffolding. Summary of the invention

[0005] In order to solve the problem of low accuracy in safety assessment of steel-wood composite truss arches, the present application provides an automatic deformation monitoring system for steel-wood composite truss arches.

[0006] The present application provides an automatic deformation monitoring system for a steel-wood composite truss arch, the system comprising a reference monitoring point, a target monitoring point, a data acquisition device and a data processing device; The reference monitoring point is set in an area with stable geological conditions outside the target monitoring area, and a sign is set on the reference monitoring point. The target monitoring area is the area where the steel-wood scaffolding is located; The target monitoring point is located on a truss, a micro prism is fixedly arranged on the target monitoring point, and the truss is a load-bearing component of the steel-wood scaffold; The data acquisition device is in communication connection with the data processing device, and the data acquisition device acquires the position of the reference monitoring point and the position of the target monitoring point through the mark and the micro-prism respectively, and uploads the position of the reference monitoring point and the position of the target monitoring point to the data processing device; The data processing device is provided with an evaluation model, and the evaluation model is used to process the position of the reference monitoring point and the position of the target monitoring point to obtain an evaluation result.

[0007] By adopting the above technical solution, first, the reference monitoring point is arranged in an area with stable geological conditions outside the target monitoring area, and the target monitoring point is set on the truss, and then the position of the reference monitoring point and the position of the target monitoring point are respectively obtained through the data acquisition device, and the position of the reference monitoring point and the position of the target monitoring point are synchronously uploaded to the data processing device. An evaluation model is set in the data processing device, and the evaluation model processes the position of the reference monitoring point and the position of the target monitoring point to obtain the deformation of the truss. Since the target monitoring point of the present application is set on the truss, it is possible to achieve accurate deformation monitoring of the truss. At the same time, during the monitoring process, the influence of the deformation of the target monitoring area on the deformation of the truss is fully considered, that is, by setting the reference monitoring point in the area with stable geological conditions outside the target monitoring area to observe whether the deformation of the target monitoring area will drive the deformation of the target monitoring point, thereby improving the accuracy of the safety assessment of the arch truss.

[0008] In a possible implementation manner: the data processing device is configured to: Receiving location data, the location data including the location of a reference monitoring point and the location of a target monitoring point; Determine whether the position of the reference monitoring point is equal to the initial position, where the initial position is the position of the reference monitoring point obtained from the last monitoring; If yes, then the difference between the position of the target monitoring point and the observation position is calculated, and the deformation level is obtained according to the absolute value matching of the difference, and the observation position is the position of the target monitoring point obtained from the last monitoring; If not, a deformation function is constructed according to the position of the reference monitoring point, the position of the target monitoring point and the deformation coefficient, and the position of the reference monitoring point and the position of the target monitoring point are input into the deformation function to obtain the deformation level.

[0009] By adopting the above technical solution, when the position of the reference monitoring point is equal to the initial position, it means that the target monitoring area has not been deformed. At this time, the deformation of the target monitoring point is independent of the deformation of the target monitoring area. Therefore, the difference between the position of the target monitoring point and the observation position is directly calculated, and the deformation level of the truss is obtained by matching the absolute value of the difference. When the position of the reference monitoring point is not equal to the initial position, it means that the target monitoring area has been deformed. At this time, the deformation function is constructed to analyze whether the deformation of the target monitoring point is caused by the deformation of the target monitoring area, thereby obtaining the actual deformation of the truss, providing data support for improving the accuracy of the safety assessment of the arch truss.

[0010] In a possible implementation manner: constructing a deformation function according to the position of the reference monitoring point, the position of the target monitoring point and the deformation coefficient includes: The function f(k i ) indicates that from k 1 and k 2 The maximum value is selected from , m represents the position of the reference monitoring point, n represents the position of the target monitoring point, γ and δ are both deformation coefficients, γ is used to reflect the influence of the deformation of the target monitoring area on the deformation of the target monitoring point, and δ is used to reflect the influence of the deformation of the target monitoring point on the deformation of the target monitoring area.

[0011] By adopting the above technical solution, the deformation function is mainly used to transform k 1 and k 2 Select the maximum value among them, that is, when the deformation of the target monitoring area drives the deformation of the target monitoring point, select k 1 On the contrary, when the deformation of the target monitoring point drives the deformation of the target monitoring area, k is selected. 2 , thus providing technical support for obtaining accurate truss deformation.

[0012] In a possible implementation manner, the step of inputting the position of the reference monitoring point and the position of the target monitoring point into the deformation function to obtain the deformation level includes: Determine a final position according to the position of the reference monitoring point, the position of the target monitoring point and the deformation function, wherein the final position represents the position of the target monitoring point after actual deformation; Calculating the difference between the final position and the observed position; The deformation level is obtained by matching the absolute value of the difference.

[0013] In a possible implementation manner, the determining the final position according to the position of the reference monitoring point, the position of the target monitoring point and the deformation function includes: After the position of the reference monitoring point and the position of the target monitoring point are input, the deformation function is f(k 1 ), then the final position is: After the position of the reference monitoring point and the position of the target monitoring point are input, the deformation function is f(k 2 ), then the final position is: in, is the final position, n is the position of the target monitoring point, m is the position of the reference monitoring point, γ is the deformation coefficient, and γ is used to reflect the influence of the deformation of the target monitoring area on the deformation of the target monitoring point.

[0014] By adopting the above technical solution, due to the selection of k 1 When , it means that the deformation of the target monitoring area drives the deformation of the target monitoring point, so the final deformation of the target monitoring point should be minus the error caused by the deformation of the target monitoring area. 2 , it means that the deformation of the target monitoring point has nothing to do with the deformation of the target monitoring area, and even the deformation of the target monitoring area may be caused by the target monitoring point. Therefore, the final deformation of the target monitoring point is the deformation of the target monitoring point itself.

[0015] In a possible implementation manner: the data processing device is further configured to: When calculating the difference between the position of the target monitoring point and the observation position, and obtaining the deformation level according to the absolute value of the difference, the method further includes: Calculate the difference between the position of the target monitoring point and the observation position, take the absolute value of the difference as the deformation value, and mark the target monitoring point with a deformation value greater than 0 as the center point; Calculating deformation values ​​of target monitoring points adjacent to the center point; Determine whether the deformation value of the target monitoring point adjacent to the center point is greater than the deformation value of the center point; If so, mark the target monitoring point whose deformation value is greater than the deformation value of the center point as the new center point, and traverse the target monitoring points adjacent to the center point in sequence until the target monitoring point with the largest deformation value is found, and output the target monitoring point with the largest deformation value as the center point; Otherwise, output the center point; Calculate the deformation range value radiating from the center point to the surrounding area, where the deformation range value is used to reflect the influence of the deformation of the center point on the deformation of the surrounding target monitoring points; The deformation value of the center point is calculated according to the difference between the position of the center point and the observation position and the deformation range value; The deformation level is obtained according to the deformation value matching.

[0016] In a possible implementation manner, the calculating of the deformation range value radiating from the center point to the surrounding area includes: Calculate the distance between the target monitoring point whose deformation value is greater than 0 and the center point, wherein the distance is related to the number of target monitoring points located between the center point and the target monitoring point; The maximum distance is determined as the deformation range value.

[0017] In a possible implementation: the deformation value of the center point is calculated by the following calculation formula: w=h(1+d*10%), wherein w is the deformation value of the center point, h is the absolute value of the difference between the position of the center point and the observed position, and d is the deformation range value of the center point.

[0018] By adopting the above technical solution, the present application can analyze whether the deformation of each target monitoring point is affected by the deformation of other target monitoring points by finding the center point, calculating the deformation value of the center point and matching the corresponding deformation level. On the one hand, it can improve the accuracy of the safety assessment of the arch truss, and on the other hand, it can facilitate the management personnel to pay attention to the center point with the highest deformation level and the greatest deformation influence in the future, so that the center point can be inspected and maintained in time to reduce the safety hazards of the center point.

[0019] In a possible implementation, the method further includes: Along the longitudinal direction of the steel-wood scaffold, the steel-wood scaffold is cut step by step according to a preset length value to obtain a plurality of cross sections, each of the cross sections includes an upper chord and two lower chords with the upper chord as a symmetric point; In each of the cross sections, an upper chord and two lower chords are determined as target monitoring points.

[0020] By adopting the above technical solution, the present application sets three target monitoring points in each vertical space according to preset length values, and then sets a micro prism at each target monitoring point to monitor the deformation of the truss in the horizontal and vertical directions, thereby improving the accuracy of the safety assessment of the arch truss.

[0021] In a possible implementation manner: the data acquisition device is connected to the data processing device via a wired manner and / or a wireless manner.

[0022] By adopting the above technical solution, the data acquisition device and the data processing device can support connection using wired and / or wireless methods, so that the data acquisition device and data processing can be deployed according to different application environments, thereby improving the environmental adaptability of the deformation monitoring system of the present application.

[0023] In summary, the present application includes the following beneficial technical effects: First, the reference monitoring point is arranged in an area with stable geological conditions outside the target monitoring area, and the target monitoring point is set on the truss. Then, the position of the reference monitoring point and the position of the target monitoring point are respectively obtained through the data acquisition device, and the position of the reference monitoring point and the position of the target monitoring point are simultaneously uploaded to the data processing device. An evaluation model is set in the data processing device, and the evaluation model can execute: when the position of the reference monitoring point is equal to the initial position, it means that the target monitoring area has not been deformed. At this time, the deformation of the target monitoring point is irrelevant to the deformation of the target monitoring area. Therefore, the difference between the position of the target monitoring point and the observation position is directly calculated, and the absolute value of the difference is matched to obtain the deformation level of the truss. When the position of the reference monitoring point is not equal to the initial position, it means that the target monitoring area has been deformed. At this time, a deformation function is constructed to analyze whether the deformation of the target monitoring point is caused by the deformation of the target monitoring area. When the deformation function outputs k 1 When , it means that the deformation of the target monitoring area drives the deformation of the target monitoring point, so the final deformation of the target monitoring point should be minus the error caused by the deformation of the target monitoring area. Similarly, when the deformation function outputs k 2 , it means that the deformation of the target monitoring point has nothing to do with the deformation of the target monitoring area, and even the deformation of the target monitoring area may be caused by the target monitoring point, so the final deformation of the target monitoring point is the deformation of the target monitoring point itself. In other words, this application fully considers the impact of the deformation of the target monitoring area on the deformation of the truss, thereby providing data support for improving the accuracy of the safety assessment of the arch truss. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of an exemplary operating environment of an embodiment of the present application.

[0025] Figure 2 This is a diagram of an automated deformation monitoring system for a steel-wood composite truss arch in an embodiment of the present application.

[0026] Figure 3 This is an example diagram of setting target monitoring points in the system embodiment of the present application.

[0027] Figure 4 This is an example diagram of calculating the deformation range value of the center point in the system embodiment of the present application.

[0028] Explanation of the accompanying drawings: 1. Reference monitoring point; 2. Target monitoring point; 21. Micro prism; 3. Data acquisition device; 4. Data processing device; 5. Steel-wood scaffolding. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] Figure 1 A schematic diagram of an exemplary operating environment in which an embodiment of the present application can be implemented is shown, the operating environment includes a steel-wood scaffolding 5 and a monitoring system for monitoring the steel-wood scaffolding 5, the monitoring system is also called an automatic deformation monitoring system for steel-wood composite truss arches, and is mainly used to monitor the deformation of the arch trusses of the steel-wood scaffolding 5.

[0031] In this example, the area where the steel-wood scaffolding 5 is located is set as the target monitoring area. Multiple steel-wood scaffoldings 5 ​​may be deployed in the target monitoring area, such as Figure 1 In the example, the shaded area in the target monitoring area is the steel-wood scaffolding 5. The monitoring system can specifically monitor the deformation of the arch trusses of each steel-wood scaffolding 5, thereby providing a basis for evaluating the engineering quality of each steel-wood scaffolding 5 and ensuring the safety of the steel-wood scaffolding 5 during operation.

[0032] like Figure 2 As shown, the monitoring system includes a reference monitoring point 1, a target monitoring point 2, a data acquisition device 3 and a data processing device 4. The reference monitoring point 1 is set in an area with stable geological conditions outside the target monitoring area. In the area with stable geological conditions, a pit is dug to cast a concrete pier and a mark is pre-buried on the top of the concrete pier to form the reference monitoring point 1. In actual application, the deployment position and deployment density of the reference monitoring point 1 need to be determined according to the area of ​​the target monitoring area. The larger the area of ​​the target monitoring area, the higher the density of the deployed reference monitoring points 1, so as to cover the surrounding area of ​​the target monitoring area. Figure 1 In the example, a reference monitoring point 1 is arranged on both sides of each steel-wood scaffold 5 in the longitudinal direction.

[0033] The target monitoring point 2 is located on the truss. Considering the spatial effect of the truss structure, that is, deformation at one position may lead to deformation at other positions, the steel-wood scaffold 5 is cut step by step along the longitudinal direction according to the preset length value to obtain multiple cross sections. In each cross section, the upper chord is selected as a target monitoring point 2, and the two lower chords with the upper chord as the symmetrical point are also selected as target monitoring points 2. Figure 3The figure shows three target monitoring points 2 arranged in a cross section. Based on the selected target monitoring points 2, a micro prism 21 is fixedly arranged on each target monitoring point 2, such as by using stainless steel screws to fix the micro prism 21 on the target monitoring point 2.

[0034] The data acquisition device 3 is a measuring robot. In order to prevent external weather such as sunlight and rain from damaging the measuring robot, thereby reducing the service life of the measuring robot, the present application sets the measuring robot in the target monitoring area, specifically in the steel-wood scaffold 5. At the same time, there should be no obstruction between the measuring robot and the micro prism 21 to prevent the measuring robot from not being able to receive the light returned by the micro prism 21. The measuring robot obtains the position of the reference monitoring point 1 through the mark on the reference monitoring point 1, and the measuring robot also obtains the position of the target monitoring point 2 through the micro prism 21.

[0035] The data acquisition device 3 can be designed as an integrated device with the data processing device 4, that is, the data processing device 4 is installed on the measuring robot, in which case the data acquisition device 3 can be connected to the data processing device 4 by wire and / or wireless means. The data processing device 4 can also be set separately, in which case the data processing device 4 is connected to the data acquisition device 3 by wireless means, such as wifi, Bluetooth, 4G or 5G network, etc.

[0036] The data processing device 4 is a microcomputer, which is supported by a CPU chip to run an application program. An evaluation model is set in the data processing device 4. After the data processing device 4 obtains the position of the reference monitoring point 1 and the position of the target monitoring point 2 through the data acquisition device 3, it uses the evaluation model to process the position of the reference monitoring point 1 and the position of the target monitoring point 2 to obtain the deformation evaluation result of the truss. In this example, the deformation evaluation result mainly includes the deformation level of the truss.

[0037] Specifically, the steps of processing the position of the reference monitoring point 1 and the position of the target monitoring point 2 by the evaluation model are as follows: Step S1 , receiving position data, the position data including the position of the reference monitoring point 1 and the position of the target monitoring point 2 .

[0038] Step S2: determine whether the position of the reference monitoring point 1 is equal to the initial position, where the initial position is the position of the reference monitoring point 1 obtained from the last monitoring.

[0039] The present application periodically monitors the deformation of the truss, so the position of the reference monitoring point 1 is periodically collected and the position of the reference monitoring point 1 obtained from each monitoring is stored. Therefore, when the position of the reference monitoring point 1 is obtained in the second monitoring, the position of the reference monitoring point 1 obtained from the last monitoring is retrieved, and the two positions are compared to determine whether the target monitoring area has deformed.

[0040] In other examples, the positions of multiple reference monitoring points 1 before the current monitoring may also be retrieved, and the deformation trend of the target monitoring area may be learned by comparing multiple positions.

[0041] It should be noted that the deformation of the target monitoring area may be caused by ground subsidence in the target monitoring area, or may be caused by the steel-wood shelf 5 being affected by gravity.

[0042] Step S3: If yes, then calculate the difference between the position of the target monitoring point 2 and the observation position, and obtain the deformation level according to the absolute value matching of the difference. The observation position is the position of the target monitoring point 2 obtained from the last monitoring.

[0043] When the position of the reference monitoring point 1 is equal to the initial position, it means that the target monitoring area has not been deformed, so the difference between the position of the target monitoring point 2 and the observation position is calculated at this time. Similarly, when the deformation of the truss is periodically monitored, the position of the target monitoring point 2 is also periodically collected and the position of the target monitoring point 2 obtained from each monitoring is stored. Therefore, when the position of the target monitoring point 2 is obtained in the second monitoring and the position of the reference monitoring point 1 is equal to the initial position, the position of the target monitoring point 2 obtained in the previous monitoring is retrieved, and the difference between the two positions is calculated to obtain the deformation value of the truss. The deformation value here is also the absolute value of the difference, and then the deformation level is obtained according to the deformation value matching.

[0044] Specifically, the data processing device 4 is also provided with a level list, which includes deformation values, deformation levels, and the corresponding relationship between deformation values ​​and deformation levels. That is, the level list stores deformation levels and deformation values ​​corresponding to each deformation level. Therefore, after the deformation value is calculated, the deformation level corresponding to the deformation value can be matched in the level list.

[0045] It should be noted that when the calculated deformation value of the target monitoring point 2 is greater than 0, the target monitoring point 2 with a deformation value greater than 0 is marked as the center point, and the deformation value of the target monitoring point 2 adjacent to the center point is calculated. When the deformation value of the target monitoring point 2 adjacent to the center point is greater than the deformation value of the center point, the target monitoring point 2 with a deformation value greater than the deformation value of the center point is used as the new center point, and so on, until the target monitoring point 2 with the largest deformation value is found. When the deformation value of the target monitoring point 2 adjacent to the center point is less than the deformation value of the center point, the current center point is used as the final center point. Then, the deformation range value radiating from the center point to the surrounding area is calculated, specifically, the distance between the target monitoring point 2 with a deformation value greater than 0 and the center point is calculated. The distance is counted by the number of target monitoring points 2 separated, and then the largest distance is selected as the deformation range value, such as Figure 4As shown, it is assumed that there are target monitoring points a, b, c, d, e, f, g, and h in the target monitoring area, whose deformation values ​​are all greater than 0, where a is the center point. Since the distance between the center point a and h is 2 (i.e., the interval between the target monitoring points d and g), the deformation range value of the center point is 2. Finally, the deformation value of the center point is calculated according to the deformation range value: w=h(1+d*10%), where w is the deformation value, h is the absolute value of the difference between the position of the center point and the observed position, and d is the deformation range value of the center point. Finally, the deformation level of the center point is obtained by matching the deformation value. In addition, for other target monitoring points 2 except the center point, the deformation level is still obtained by matching the absolute value of the difference between the position of the target monitoring point 2 and the observed position.

[0046] According to the above process of calculating the deformation value of the center point, it is convenient for the management personnel to subsequently pay attention to the center point with the highest deformation level and the greatest deformation influence, so that the center point can be inspected and repaired in time to reduce the safety hazards of the center point.

[0047] Step S4: If not, construct a deformation function according to the position of the reference monitoring point 1, the position of the target monitoring point 2 and the deformation coefficient, and input the position of the reference monitoring point 1 and the position of the target monitoring point 2 into the deformation function to obtain the deformation level.

[0048] First, construct the deformation function. First, obtain the deformation coefficients γ and δ. γ is used to reflect the influence of the deformation of the target monitoring area on the deformation of the target monitoring point 2, and δ is used to reflect the influence of the deformation of the target monitoring point 2 on the deformation of the target monitoring area. In other words, when the target monitoring area is deformed, the target monitoring point 2 will be deformed. Similarly, when the target monitoring point 2 is deformed, it may also cause the target monitoring area to deform. However, the degree of deformation in the two directions is not equal, and γ>δ is often the case. γ and δ can be calculated through a limited number of experiments. Based on the deformation coefficient γ, the deformation coefficient δ, the position of the reference monitoring point 1, and the position of the target monitoring point 2, construct the deformation function: The function f(k i ) indicates that from k 1 and k 2 Select the maximum value, m represents the position of the reference monitoring point 1, and n represents the position of the target monitoring point 2.

[0049] Then, the position of the reference monitoring point 1 and the position of the target monitoring point 2 are input into the deformation function to obtain k 1 and k 2 value, and then select k through the deformation function 1 and k 2 The maximum value in is when: After inputting the position of the reference monitoring point 1 and the position of the target monitoring point 2, the deformation function is f(k 1), then the final position of the target monitoring point 2 is: is the final position of target monitoring point 2; After inputting the position of the reference monitoring point 1 and the position of the target monitoring point 2, the deformation function is f(k 2 ), then the final position of the target monitoring point 2 is: is the final position of target monitoring point 2.

[0050] In simple terms, when the deformation of the target monitoring area drives the deformation of the target monitoring point, the final deformation of the target monitoring point should be reduced by the error caused by the deformation of the target monitoring area. When the deformation of the target monitoring point is irrelevant to the deformation of the target monitoring area, the deformation of the target monitoring area may even be caused by the target monitoring point, so the final deformation of the target monitoring point is the deformation of the target monitoring point itself.

[0051] Finally, the difference between the final position of the target monitoring point 2 and the observed position is calculated. As introduced in step S3, the observed position is the position of the target monitoring point 2 obtained in the last monitoring. Then, the deformation level of the target monitoring point 2 is obtained by matching the absolute value of the difference. The specific matching process is similar to the matching process in step S3, so it will not be repeated here.

[0052] It should be noted that the above-mentioned monitoring system can also be applied to the construction process of the steel-wood scaffolding 5 to realize the safety monitoring of the steel-wood scaffolding 5 structure during the construction stage. By comparing and analyzing the measured value, theoretical value and allowable value of the truss deformation, and combining the temperature, wind speed and other influencing factors of the environment where the steel-wood scaffolding 5 is located, an assessment of the construction safety of the steel-wood scaffolding 5 during the construction stage is given, the construction quality at the current stage is judged, and suggestions are provided for the next construction plan and safety measures.

[0053] In summary, the implementation principle of the automatic deformation monitoring system of a steel-wood composite truss arch in the embodiment of the present application is as follows: first, the reference monitoring point 1 is arranged in an area with stable geological conditions outside the target monitoring area, and the target monitoring point 2 is set on the truss, and then the position of the reference monitoring point 1 and the position of the target monitoring point 2 are respectively obtained through the data acquisition device 3, and the position of the reference monitoring point 1 and the position of the target monitoring point 2 are simultaneously uploaded to the data processing device 4. An evaluation model is set in the data processing device 4, and the evaluation model is used to determine whether the deformation of the target monitoring point 2 is caused by the deformation of the target monitoring area. If so, it is further analyzed whether the influence of the deformation of the target monitoring point 2 driven by the deformation of the target monitoring area is greater than the deformation of the target monitoring point 2 itself. If so, the deformation of the target monitoring point 2 driven by the deformation of the target monitoring area is used as the final deformation, thereby obtaining the deformation of the target monitoring point 2; otherwise, the corresponding deformation level is directly calculated based on the position of the target monitoring point 2. It can be seen that the present application can penetrate deeply into the truss and realize accurate deformation monitoring of the truss. At the same time, during the monitoring process, it also fully considers the influence of the deformation of the target monitoring area on the deformation of the truss, thereby improving the accuracy of the safety assessment of the arch truss.

[0054] In order to better execute the program in the above evaluation model, the data processing device 4 of the present application includes a memory and a processor.

[0055] The memory may be used to store instructions, programs, codes, code sets or instruction sets. The memory may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function, and instructions for implementing the above-mentioned steel-wood composite truss arch automatic deformation monitoring method, etc.; the data storage area may store data involved in the above-mentioned steel-wood composite truss arch automatic deformation monitoring method, etc.

[0056] The processor may include one or more processing cores. The processor calls the data stored in the memory by running or executing the instructions, programs, code sets or instruction sets stored in the memory, performs various functions of the present application and processes data. The processor may be at least one of a special purpose integrated circuit, a digital signal processor, a digital signal processing device, a programmable logic device, a field programmable gate array, a central processing unit, a controller, a microcontroller and a microprocessor. It is understandable that for different devices, the electronic device used to implement the above-mentioned processor function can also be other, and the embodiments of the present application are not specifically limited.

[0057] The present application also provides a computer-readable storage medium, for example, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes. The computer-readable storage medium stores a computer program that can be loaded by a processor and execute the above-mentioned steel-wood composite truss arch automatic deformation monitoring method.

[0058] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the aforementioned disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other to form a technical solution.

Claims

1. An automatic deformation monitoring system for steel-wood composite truss arches. Features: It comprises a reference monitoring point (1), a target monitoring point (2), a data acquisition device (3) and a data processing device (4); The reference monitoring point (1) is set in an area with stable geological conditions outside the target monitoring area, and a mark is set on the reference monitoring point (1). The target monitoring area is the area where the steel-wood scaffold (5) is located; The target monitoring point (2) is located on a truss, a micro prism (21) is fixedly arranged on the target monitoring point (2), and the truss is a load-bearing component of the steel-wood scaffold (5); The data acquisition device (3) is in communication connection with the data processing device (4), and the data acquisition device (3) acquires the position of the reference monitoring point (1) and the position of the target monitoring point (2) through the mark and the micro-prism (21), respectively, and uploads the position of the reference monitoring point (1) and the position of the target monitoring point (2) to the data processing device (4); The data processing device (4) is provided with an evaluation model, and the evaluation model is used to process the position of the reference monitoring point (1) and the position of the target monitoring point (2) to obtain an evaluation result.

2. The automatic deformation monitoring system for steel-wood composite truss arch according to claim 1, Features: The data processing device (4) is configured to: Receiving position data, the position data comprising the position of a reference monitoring point (1) and the position of a target monitoring point (2); Determining whether the position of the reference monitoring point (1) is equal to the initial position, wherein the initial position is the position of the reference monitoring point (1) obtained from the last monitoring; If yes, then the difference between the position of the target monitoring point (2) and the observation position is calculated, and the deformation level is obtained by matching the absolute value of the difference, wherein the observation position is the position of the target monitoring point (2) obtained from the last monitoring; If not, a deformation function is constructed according to the position of the reference monitoring point (1), the position of the target monitoring point (2) and the deformation coefficient, and the position of the reference monitoring point (1) and the position of the target monitoring point (2) are input into the deformation function to obtain the deformation level.

3. The automatic deformation monitoring system for steel-wood composite truss arch according to claim 2, Features: The step of constructing a deformation function according to the position of the reference monitoring point (1), the position of the target monitoring point (2) and the deformation coefficient comprises: The function f(k i ) indicates that from k 1 and k 2 The maximum value is selected from , m represents the position of the reference monitoring point (1), n ​​represents the position of the target monitoring point (2), γ and δ are both deformation coefficients, γ is used to reflect the influence of the deformation of the target monitoring area on the deformation of the target monitoring point (2), and δ is used to reflect the influence of the deformation of the target monitoring point (2) on the deformation of the target monitoring area.

4. The automatic deformation monitoring system for steel-wood composite truss arch according to claim 2, Features: The step of inputting the position of the reference monitoring point (1) and the position of the target monitoring point (2) into the deformation function to obtain the deformation level comprises: Determining a final position according to the position of the reference monitoring point (1), the position of the target monitoring point (2) and the deformation function, wherein the final position represents the position of the target monitoring point (2) after actual deformation; Calculating the difference between the final position and the observed position; The deformation level is obtained by matching the absolute value of the difference.

5. The automatic deformation monitoring system for steel-wood composite truss arch according to claim 4, Features: The step of determining the final position according to the position of the reference monitoring point (1), the position of the target monitoring point (2) and the deformation function comprises: When the position of the reference monitoring point (1) and the position of the target monitoring point (2) are input, the deformation function is f(k 1 ), then the final position is: When the position of the reference monitoring point (1) and the position of the target monitoring point (2) are input, the deformation function is f(k 2 ), then the final position is: in, is the final position, n is the position of the target monitoring point (2), m is the position of the reference monitoring point (1), and γ is the deformation coefficient, which is used to reflect the influence of the deformation of the target monitoring area on the deformation of the target monitoring point (2).

6. The automatic deformation monitoring system for steel-wood composite truss arch according to claim 2, Features: The data processing device (4) is further configured to: When calculating the difference between the position of the target monitoring point (2) and the observation position and obtaining the deformation level according to the absolute value of the difference, it also includes: Calculate the difference between the position of the target monitoring point (2) and the observation position, use the absolute value of the difference as the deformation value, and mark the target monitoring point (2) with a deformation value greater than 0 as the center point; Calculating the deformation value of the target monitoring point (2) adjacent to the center point; Determining whether the deformation value of the target monitoring point (2) adjacent to the center point is greater than the deformation value of the center point; If so, the target monitoring point (2) whose deformation value is greater than the deformation value of the center point is marked as the new center point, and the target monitoring points (2) adjacent to the center point are traversed in sequence until the target monitoring point (2) with the largest deformation value is found, and the target monitoring point (2) with the largest deformation value is output as the center point; Otherwise, output the center point; Calculating the deformation range value radiating from the center point to the surrounding area, wherein the deformation range value is used to reflect the influence of the deformation of the center point on the deformation of the surrounding target monitoring points (2); The deformation value of the center point is calculated according to the difference between the position of the center point and the observation position and the deformation range value; The deformation level is obtained according to the deformation value matching.

7. The automatic deformation monitoring system for steel-wood composite truss arch according to claim 6, Features: The calculation of the deformation range value radiating from the center point to the surrounding area includes: Calculating the distance between the target monitoring point (2) having a deformation value greater than 0 and the center point, wherein the distance is related to the number of the target monitoring point (2) located between the center point and the target monitoring point (2); The maximum distance is determined as the deformation range value.

8. The automatic deformation monitoring system for steel-wood composite truss arch according to claim 6, Features: The deformation value of the center point is calculated by the following calculation formula: w=h(1+d*10%), Wherein, w is the deformation value of the center point, h is the absolute value of the difference between the position of the center point and the observed position, and d is the deformation range value of the center point.

9. The automatic deformation monitoring system for steel-wood composite truss arch according to claim 1, Features: Also includes: Along the longitudinal direction of the steel-wood scaffold (5), the steel-wood scaffold (5) is cut step by step according to a preset length value to obtain a plurality of cross sections, each of the cross sections comprising an upper chord and two lower chords with the upper chord as a symmetric point; In each of the cross sections, an upper chord and two lower chords are determined as target monitoring points (2).

10. The automatic deformation monitoring system for steel-wood composite truss arch according to claim 1, Features: The data acquisition device (3) is connected to the data processing device (4) via a wired manner and / or a wireless manner.

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