Safety assessment method and system for assembled beam-string steel supports

Abstract

The present invention discloses a safety assessment method and system for an assembled beam-string steel support, which relates to the technical field of engineering monitoring. When taking soil, the present invention monitors the beam-string steel support and the soil, monitors the construction site, increases the monitoring interaction of workers, analyzes the safety of soil taking operations in the construction area, the safety of the beam-string steel support, and the management safety of the construction area, and performs corresponding management, thereby realizing multi-dimensional monitoring of the beam-string steel support safety assessment, improving the reliability and reference of the beam-string steel support safety assessment results, ensuring the safety of equipment operation and soil taking operations in the construction site, improving the management efficiency and effect of the construction site, ensuring the safety of the beam-string steel support and the soil, improving the stability of the beam-string steel support, and reducing the risk of accidents at the construction site.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering monitoring, and in particular to a safety assessment method and system for an assembled beam-string steel support. Background Art

[0002] The prefabricated beam-string steel support adopts a truss structure combined with a beam-string structure, and has the characteristics of high rigidity and high safety. By setting up the beam-string, soil excavation is convenient, the difficulty of operation can be reduced, and the speed of earth excavation can be accelerated. However, to ensure the stability of the beam-string, it is necessary to ensure the distance between the soil pile and the equipment and the beam-string when taking soil, reduce the impact on the stability of the beam-string, and ensure the safety of the support structure. Therefore, the safety of the beam-string needs to be monitored when taking soil.

[0003] Existing technologies, such as the invention patent disclosed in the application with publication number CN116911700A, are a method and system for engineering safety and quality supervision based on BIM and IOT, which involves the field of engineering supervision technology, including: deploying IoT devices, building BIM models, integrating them, and starting a real-time data monitoring mode; collecting data during the construction process in real time, performing intelligent analysis of the data through graph neural networks, and determining risk points; using a communication network to transmit data, decrypting the received data, and performing preliminary processing; conducting risk assessment on the preliminary processed data, executing a response strategy based on the assessment results, and optimizing the response strategy execution plan based on a genetic algorithm; after executing the response measures, adaptively adjusting the assessment results. The engineering safety and quality supervision method based on BIM and IOT provided by the present invention ensures construction safety. It improves the real-time and accuracy of responses and ensures that the information is authentic and reliable. It provides decision makers with a comprehensive risk management perspective and effectively controls construction risks.

[0004] Existing technology, such as the invention patent disclosed in the application with publication number CN113449953A, discloses a method for safety assessment of prefabricated building construction, which includes a construction site data detection module, a video acquisition module, a geological and climate information assessment module, and a construction division and risk identification module. The construction site data detection module detects the latitude and longitude coordinate values ​​of the construction site, obtains the latitude coordinate value of the current building to be evaluated through data detection, and uses the latitude value of the building to be evaluated to call the safety factor-related parameter data of the current building to be evaluated. The present invention collects images of workers' construction movements and generates corresponding dynamic construction movements based on the construction movement images. The dynamic construction movements are then matched with preset standard dynamic construction movements, thereby quickly determining whether the current workers' construction movements are irregular, so that hidden dangers can be quickly and conveniently discovered and accidents can be avoided in safety monitoring and management.

[0005] Regarding the above-mentioned solution, in the prior art, during construction, real-time monitoring of various data such as the construction site and the workers' movements is mainly carried out, and the safety hazards of the construction are analyzed after comparing the data with preset thresholds. This method has at least the following shortcomings: 1. When taking soil at the construction site, not only the various data of the prefabricated beam string steel support itself can reflect whether the prefabricated beam string steel support is safe, but the operation of the soil-taking equipment by the workers at the construction site will affect the safety of the beam string. The equipment needs to maintain a certain distance from the beam string during soil taking to reduce the impact of the excavation force and vibration force of the equipment during operation on the beam string steel support. However, the prior art lacks monitoring of the trajectory of the soil-taking equipment, so it is impossible to ensure the distance between the soil-taking equipment and the beam string steel support, and it is impossible to avoid damage to the steel structure support structure caused by the excavation force and vibration force of the equipment, thereby threatening construction safety and project progress.

[0006] 2. The placement of soil piles at the construction site needs to maintain a safe distance from the steel beam string supports to prevent the accumulation of soil piles on the steel beam string supports, which may cause the support structure to become unstable, and the soil sliding and impacting the support structure. However, the existing technology mainly relies on manual monitoring of the status of the soil piles, which cannot ensure the standardization of the soil piles by the workers on the construction site in real time, thereby affecting the stability of the steel beam string supports. It is also impossible to train and manage the workers in a timely manner, increasing the danger of construction site operations.

[0007] 3. When taking soil, it is necessary to strictly follow the regulations, and workers should check the stability and deformation of the steel support multiple times to ensure the safety of the support structure. However, in the existing technology, when manual inspection is carried out, there is a lack of synchronization of the inspection data to the central server. The management personnel cannot obtain the workers' inspection situation through the server, and the inspection data cannot be used to analyze the safety of the beam string steel support, which reduces the utilization rate of the inspection data, and cannot provide data for the analysis of the safety assessment of the beam string steel support, and cannot effectively manage the workers' inspection work. In addition, when taking soil, workers should excavate strictly according to the plan to ensure the progress and safety of the excavation. However, the existing technology lacks monitoring of the soil, so it is impossible to understand the actual excavation situation, and it is impossible to ensure the safety of the soil and the beam string steel support, which reduces the safety of the construction site. Summary of the Invention

[0008] In view of the above-mentioned technical deficiencies, the object of the present invention is to provide a safety assessment method and system for prefabricated beam-string steel supports.

[0009] In order to solve the above technical problems, the present invention adopts the following technical solutions: In the first aspect, the present invention provides a safety assessment method for a prefabricated steel beam string support, comprising the following steps: S1. During a soil excavation process, several collection time periods are arranged according to a preset soil excavation plan, and soil excavation video data of the construction area in each collection time period is collected. At the same time, several collection devices are installed in the construction area, and the collection devices are used to collect monitoring data corresponding to the steel beam string support in each collection time period and basic data of the soil in each collection time period according to a preset collection frequency, and then transmit the data to a server.

[0010] S2. When taking soil, the soil workers shall upload the adjustment data and manual inspection data of the steel support of the beam string in each collection period according to the requirements of the soil taking plan.

[0011] S3. The server receives the soil excavation video data, the corresponding monitoring data of the beam string steel support in each collection period, and the basic data of the soil in each collection period, and processes the data. At the same time, the server uses the adjustment data and manual inspection data of the beam string steel support in each collection period to analyze the safety of soil excavation operations in the construction area, the safety of the beam string steel support, and the management safety of the construction area, and comprehensively analyzes the construction safety of the beam string steel support during soil excavation.

[0012] S4. Implement corresponding construction management plan to ensure the construction safety of steel beam string supports during soil excavation.

[0013] In a second aspect, the present invention provides a safety assessment system for a prefabricated beam string steel support, comprising: a first monitoring module, configured to arrange a plurality of collection time periods according to a preset soil excavation plan during a soil excavation process, collect soil excavation video data from the construction area during each collection time period, and simultaneously install a plurality of collection devices in the construction area, using the collection devices to collect monitoring data corresponding to the beam string steel support in each collection time period and basic data of the soil in each collection time period according to a preset collection frequency, and send the data to a data analysis module.

[0014] The worker monitoring module is used by earthwork workers to upload adjustment data and manual inspection data of the steel support of the beam string during each collection period in accordance with the requirements of the earthwork plan when earthwork workers are taking earth.

[0015] The data analysis module is used to receive the earth excavation video data of each collection period, the monitoring data corresponding to the beam string steel support in each collection period, and the basic data of the soil in each collection period, and perform data processing. At the same time, the adjustment data and manual inspection data of the beam string steel support in each collection period are used to analyze the safety of earth excavation operations in the construction area, the safety of the beam string steel support, and the management safety of the construction area, and comprehensively analyze the construction safety of the beam string steel support during earth excavation.

[0016] The execution module is used to implement the corresponding construction management plan for the construction safety of the steel support of the tensioned beam during soil excavation.

[0017] The beneficial effects of the present invention are as follows: the present invention provides a safety assessment method and system for prefabricated beam string steel supports, which monitor the beam string steel supports and the soil when taking soil, monitor the construction site at the same time, increase the monitoring interaction of workers, analyze the safety of soil taking operations in the construction area, the safety of the beam string steel supports and the management safety of the construction area, and carry out corresponding management, thereby realizing multi-dimensional monitoring of the safety assessment of the beam string steel supports, improving the reliability and reference of the safety assessment results of the beam string steel supports, ensuring the safety of equipment operation and soil taking operations in the construction site, improving the management efficiency and management effect of the construction site, ensuring the safety of the beam string steel supports and the soil, improving the stability of the beam string steel supports, and reducing the risk of accidents at the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 The figure is a flow chart of the steps for implementing the method of the present invention.

[0020] Figure 2 This is a schematic diagram of the system structure connection of the present invention. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1 As shown, a safety assessment method for a prefabricated steel beam string support includes the following steps: S1. During a soil excavation process, several collection periods are arranged according to a preset soil excavation plan, and soil excavation video data of the construction area in each collection period is collected. At the same time, several collection devices are installed in the construction area, and the collection devices are used to collect monitoring data corresponding to the steel beam string support in each collection period and basic data of the soil in each collection period according to a preset collection frequency, and then transmit the data to a server.

[0023] It should be noted that soil is excavated in layers, and each layer of soil is considered a collection period.

[0024] The camera mounted on the drone is used to collect video data of soil excavation in the construction area during each collection period. The construction area is divided into a beam string steel support structure and a soil excavation area. Displacement sensors, settlement sensors, and vibration sensors are installed on the beam string steel support structure to collect monitoring data corresponding to the beam string steel support during each collection period. The monitoring data includes various types of collection data, including displacement data, settlement data, and structural data. The displacement data includes displacement amount, the settlement data includes settlement amount, and the structural data includes vibration frequency and amplitude.

[0025] Displacement sensors and settlement sensors are installed in the soil excavation area to collect basic data of the soil in each collection period. The basic data includes various monitoring data, and the various monitoring data include soil displacement data and soil settlement data. The soil displacement data includes the displacement of the soil, and the soil settlement data includes the settlement of the soil.

[0026] S2. When taking soil, the soil workers shall upload the adjustment data and manual inspection data of the steel support of the beam string in each collection period according to the requirements of the soil taking plan.

[0027] It should be noted that the earth-excavation plan specifies the time for earth-excavation workers to perform steel string beam support each time, as well as relevant data such as the location of the structure that needs to be adjusted and the quantity of materials required for adjustment. Earth-excavation workers need to conduct inspections at the specified time and reinforce the structure when loose structures are detected. After the inspection, the adjustment data and manual inspection data are uploaded to the system through the user end. The adjustment data includes the actual location of the adjusted structure and the actual quantity of materials required for adjustment; the manual inspection data includes the inspection time, the inspected area, the loose location, the reinforcement location, and the quantity of materials required for reinforcement.

[0028] S3. The server receives the soil excavation video data, the corresponding monitoring data of the beam string steel support in each collection period, and the basic data of the soil in each collection period, and processes the data. At the same time, the server uses the adjustment data and manual inspection data of the beam string steel support in each collection period to analyze the safety of soil excavation operations in the construction area, the safety of the beam string steel support, and the management safety of the construction area, and comprehensively analyzes the construction safety of the beam string steel support during soil excavation.

[0029] In a specific embodiment, the data processing process in S2 is as follows: S2-1. The soil excavation video data of each acquisition period is divided into each video screen, and the position of the soil excavation equipment, the position of the soil excavation worker, and the position and size of the soil pile are obtained from each video screen through image recognition technology; the position of the soil excavation equipment in each video screen corresponding to each acquisition period is sequentially imported into the three-dimensional model of the construction area to generate the movement trajectory of the soil excavation equipment in each acquisition period, and similarly, the movement trajectory of the soil excavation worker and the movement trajectory of the soil pile in each acquisition period are generated.

[0030] It should be noted that the soil pile is a pile of soil that has been taken out.

[0031] S2-2. The monitoring data is composed of data collected by each collection device. The type corresponding to each collection device is obtained, and the monitoring data corresponding to the steel support of the tensile beam in each collection period is classified into various types of collection data according to the type corresponding to each collection device. Similarly, the basic data of the soil in each collection period is classified into various types of monitoring data.

[0032] In a specific embodiment, the analysis process of the safety of earth-excavation operations in the construction area is as follows: based on the three-dimensional model of the construction area, the position closest to the earth-excavation area in the tensioned beam steel support is selected as the target point, and a circle is drawn with the target point as the center and a preset safety interval distance as the radius. The area within the circle is the safety impact area. The safety impact area is compared with the movement trajectory of the earth-excavation equipment in each collection period, and the part where the safety impact area overlaps with the movement trajectory is selected as the first marking operation trajectory, and the length of the first marking operation trajectory in each collection period is obtained.

[0033] It should be noted that the system stores a three-dimensional model of the construction area.

[0034] Similarly, the safety impact area is compared with the movement trajectory of the soil workers in each collection period to obtain the length of the second marking operation trajectory in each collection period; the safety impact area is compared with the movement trajectory of the soil pile in each collection period to obtain the length of the third marking operation trajectory in each collection period.

[0035] The length of the first marking operation trajectory, the length of the second marking operation trajectory, and the length of the third marking operation trajectory in each collection period are input into the soil excavation operation safety assessment model, and the safety result of the soil excavation operation in the construction area is output. The safety result of the soil excavation operation in the construction area contains data of 1 and 0. When the safety result of the soil excavation operation in the construction area is 1, it indicates that the soil excavation operation in the construction area is safe. When the safety result of the soil excavation operation in the construction area is 0, it indicates that the soil excavation operation in the construction area is dangerous.

[0036] In the above, the calculation process of the safety result of soil excavation operation in the construction area is as follows: the length of the first mark operation track, the length of the second mark operation track and the length of the third mark operation track in each collection period are respectively recorded as L1 t 、L2 t and L3 t , t represents the number of each collection period, and t is a positive integer.

[0037] Obtain historical soil excavation records, set the proportional coefficients of the first marking operation trajectory, the second marking operation trajectory, and the third marking operation trajectory, which are denoted as ε1, ε2, and ε3 respectively.

[0038] Among them, the length of the first marking operation track, the length of the second marking operation track and the length of the third marking operation track in each collection period of each historical soil sampling are obtained from the historical soil sampling records, and then accumulated to obtain the total length of the first marking operation track, the total length of the second marking operation track and the total length of the third marking operation track. The total length of the first marking operation track, the total length of the second marking operation track and the total length of the third marking operation track are divided by the sum of the total length of the first marking operation track, the total length of the second marking operation track and the total length of the third marking operation track respectively to obtain the proportional coefficient of the first marking operation track, the proportional coefficient of the second marking operation track and the proportional coefficient of the third marking operation track.

[0039] The safety assessment model expression of soil excavation operation is:

[0040] Where α represents the safety result of soil excavation operation in the construction area, p represents the number of sampling periods, and L1′ t , L2′ t 、L3′ t They represent the length of the moving trajectory of the earth-excavating equipment, the length of the moving trajectory of the earth-excavating worker, and the length of the moving trajectory of the earth pile in the t-th collection period, respectively. δ is the preset earth-excavation safety assessment coefficient threshold.

[0041] Among them, the soil excavation safety assessment coefficient threshold is used to judge the threshold or critical value of soil excavation safety. It is jointly discussed and set by multiple professionals based on the actual situation of the construction area and historical soil excavation data. When the calculated value is greater than the soil excavation safety assessment coefficient threshold, it indicates that the soil excavation operation is dangerous and the operator needs to be trained in soil excavation to improve the operational standardization of soil excavation workers. For example, assuming that the soil excavation safety assessment coefficient threshold is 20, The calculated value is 18, 18<20, which indicates that the soil excavation operation is safe and the soil excavation workers operate in accordance with the regulations.

[0042] In another specific embodiment, the safety analysis process of the beam string steel support is as follows: a set of operating data of the earth-excavating equipment in a first marked operating trajectory during each acquisition period is obtained, a first influence coefficient of the safety of the beam string steel support is calculated, the dimensions of the soil pile at each position within a third marked operating trajectory during each acquisition period is obtained, and a second influence coefficient of the safety of the beam string steel support is calculated.

[0043] In the above, the threshold value of the earth-excavating equipment operation data corresponding to the safety of the beam string steel support is obtained from the server, which is recorded as Y. The operation data of each position of the earth-excavating equipment in the first marked operation trajectory and the distance between each position and the target point are extracted from the operation data set of the earth-excavating equipment in the first marked operation trajectory in each collection period, and are used as the operation data of the earth-excavating equipment at each position in each collection period and the influence distance, respectively, which are recorded as Y tw and L tw , w represents the number of each position, w is a positive integer, substitute into the calculation formula: The first influence coefficient χ1 of the safety of the beam string steel support is obtained, where e represents the natural constant, L represents the radius of the safety influence area, and q represents the total number of positions.

[0044] In the above, the threshold value of the earth pile size that can be safely supported by the beam string steel support is obtained from the server, which is recorded as C. The distance between each position of the earth pile and the target point in the third marking operation trajectory in each collection period is obtained, which is recorded as L. t ' w At the same time, the size of the soil pile at each position in the third marking operation track during each collection period is recorded as C tw , substitute into the calculation formula The second influence coefficient χ2 of the safety of the beam string steel support is obtained.

[0045] Obtain historical soil excavation records from the server, analyze the proportional coefficients of the first and second influencing coefficients of the safety of the beam string steel support on various types of collected data, obtain the safety thresholds of various types of collected data from the server, and calculate the safety results of the beam string steel support using the various types of collected data corresponding to the beam string steel support in each collection period, the safety thresholds of various types of collected data, and the proportional coefficients of the first and second influencing coefficients of the safety of the beam string steel support on various types of collected data. The safety results of the beam string steel support contain data of 1 and 0. When the safety result of the beam string steel support is 1, it indicates that the beam string steel support is safe. When the safety result of the beam string steel support is 0, it indicates that the beam string steel support is dangerous.

[0046] In the above, the values ​​of various collected data corresponding to each historical earth excavation, the first influence coefficient and the second influence coefficient of the historical beam string steel support safety are obtained from the historical earth excavation records, and the numerical sets of the first influence coefficient and the second influence coefficient of the safety of each historical beam string steel support corresponding to various collected data are statistically analyzed. The numerical sets of the first influence coefficient and the second influence coefficient of the safety of the beam string steel support corresponding to various collected data are extracted from them, and the maximum value and the minimum value are selected. The maximum value is subtracted from the minimum value, and then divided by the minimum value to obtain the fluctuation rate of the first influence coefficient and the second influence coefficient on various collected data. Then, the fluctuation rate of the first influence coefficient on various collected data is divided by the sum of the fluctuation rates of the first influence coefficient on various collected data to obtain the proportional coefficient of the first influence coefficient on various collected data, which is recorded as γ1 i And in the same way, we can get the proportional coefficient of the second influence coefficient on each type of collected data, which is denoted as γ2 i , i represents the number of each type of collected data, and i is a positive integer.

[0047] The various types of collected data corresponding to the beam string steel support in each collection period and the safety thresholds of various types of collected data are respectively denoted as R ti and R t ′.

[0048] According to the analysis formula: Obtain the safety results of the steel support of the beam string Where φ represents the preset safety assessment threshold of the beam string steel support, and n represents the number of collected data types.

[0049] It should be noted that the beam string steel support safety assessment threshold is the critical value or threshold for judging whether the beam string steel support is safe. It is jointly discussed and set by multiple professionals based on the actual situation of the construction area and historical soil excavation data. When the calculated data is greater than the beam string steel support safety assessment threshold, it indicates that the beam string steel support is dangerous and needs to be reinforced or adjusted. Otherwise, it indicates that the beam string steel support is safe. For example, if the beam string steel support safety assessment threshold is 15, The calculated data is 17, 17>15, indicating that the beam string steel support is dangerous and workers need to be dispatched to conduct further inspection and reinforcement of the beam string steel support.

[0050] In a specific embodiment, the analysis process of the management safety of the construction area is as follows: obtaining a soil excavation plan from a server, obtaining reference monitoring data intervals of various types of soil in each acquisition period from the soil excavation plan, and a reference three-dimensional model and reference manual inspection data of the tensioned beam steel support in each acquisition period.

[0051] At the same time, the adjustment data of the beam string steel support in each acquisition period is imported into the three-dimensional model of the construction area to update the three-dimensional model of the beam string steel support in each acquisition period. The reference three-dimensional model of the beam string steel support in each acquisition period is compared with the three-dimensional model to obtain the differential structural data of the beam string steel support in each acquisition period. The management safety result of the construction area is calculated using the reference monitoring data intervals, reference manual inspection data, various monitoring data, manual inspection data and differential structural data of the soil in each acquisition period. The management safety result of the construction area includes values ​​of 1 and 0. When the management safety result of the construction area is 1, it indicates that the management of the construction area is safe. When the management safety result of the construction area is 0, it indicates that the management of the construction area is dangerous.

[0052] The difference structure data is the data difference when the reference 3D model and the structure in the 3D model are different. For example, when the size of a certain structure in the reference 3D model and the 3D model is different, the size difference between the reference 3D model and the structure in the 3D model is the difference structure data.

[0053] In the above, the calculation process of the management safety results of the construction area is as follows: the reference monitoring data intervals of the soil body in each collection period are compared with the various monitoring data to obtain the differences of the various monitoring data of the soil body in each collection period. At the same time, the reference manual inspection data of the soil body in each collection period is compared with the manual inspection data to obtain the differences of the manual inspection data of the soil body in each collection period; thus, the differences of the various monitoring data of the soil body, the manual inspection data differences and the difference structure data in each collection period are normalized and their values ​​are taken, which are respectively recorded as F1 tg 、F2 t and F3 t , g represents the number of each type of monitoring data.

[0054] According to the analysis formula Obtain management safety results for the construction area Where μ1, μ2, and μ3 represent the set first, second, and third proportional coefficients, respectively; κ represents the management safety assessment coefficient threshold of the set construction area; and s represents the number of monitoring data types.

[0055] It should be noted that the management safety assessment coefficient threshold of the construction area is the critical value or threshold for judging whether the management of the construction area is safe. It is jointly discussed and set by multiple professionals based on the actual situation of the construction area and historical soil excavation data. When the calculated data is greater than the management safety assessment coefficient threshold of the construction area, it indicates that the management of the construction area is dangerous, that is, the management of the construction area is improper and the management of the construction area needs to be strengthened. Otherwise, it indicates that the management of the construction area is safe. For example, if the management safety assessment coefficient threshold of the construction area is 18, The calculated value is 17, and 17 < 18, which indicates that the management of the construction area is safe, that is, the management of the construction area is proper and does not need to be strengthened.

[0056] Preferably, various monitoring data differences, manual detection data differences, and differential structure data of the soil body in each sampling period of each historical soil sampling are obtained from the historical soil sampling records, and the maximum monitoring data difference and the minimum monitoring data difference are selected, which are recorded as a1 and a2 respectively, and the calculation formula is used. The first difference rate b1 is obtained, and the difference in soil manual detection data and the difference structure data in each sampling period of each historical soil sampling are analyzed according to the first difference rate to obtain the second difference rate and the third difference rate, which are recorded as b2 and b3 respectively.

[0057]

[0058] In a specific embodiment, the comprehensive analysis of the construction safety of the beam string steel support during soil excavation is performed as follows: when at least one of the soil excavation operation in the construction area, the beam string steel support, and the management of the construction area is dangerous, it indicates that the construction safety of the beam string steel support during soil excavation is insufficient.

[0059] S4. Implement corresponding construction management plan to ensure the construction safety of steel beam string supports during soil excavation.

[0060] In the above, when there is a danger in the earth-excavation operation in the construction area, the construction management plan is to provide earth-excavation training to the earth-excavation workers and standardize the earth-excavation workers' operations; when there is a danger in the steel support of the beam string, the management personnel are promptly reminded to dispatch workers to conduct emergency inspections of the steel support of the beam string and reinforce and adjust the structure; when there is a danger in the management of the construction area, the management personnel are reminded to strengthen the management of the construction area, and reminder equipment is set up to remind the earth-excavation workers in the construction area to work efficiently and safely.

[0061] See also Figure 2 As shown, a safety assessment system for prefabricated steel beam string supports includes: a first monitoring module, which is used to arrange a number of collection time periods according to a preset soil excavation plan during a soil excavation process, collect soil excavation video data in the construction area during each collection time period, and simultaneously install a number of collection devices in the construction area. The collection devices collect monitoring data corresponding to the steel beam string supports in each collection time period and basic soil data in each collection time period according to a preset collection frequency, and send the data to the data analysis module.

[0062] The worker monitoring module is used by earthwork workers to upload adjustment data and manual inspection data of the steel support of the beam string during each collection period in accordance with the requirements of the earthwork plan when earthwork workers are taking earth.

[0063] The data analysis module is used to receive the earth excavation video data of each collection period, the monitoring data corresponding to the beam string steel support in each collection period, and the basic data of the soil in each collection period, and perform data processing. At the same time, the adjustment data and manual inspection data of the beam string steel support in each collection period are used to analyze the safety of earth excavation operations in the construction area, the safety of the beam string steel support, and the management safety of the construction area, and comprehensively analyze the construction safety of the beam string steel support during earth excavation.

[0064] The execution module is used to implement the corresponding construction management plan for the construction safety of the steel support of the tensioned beam during soil excavation.

[0065] The embodiment of the present invention monitors the beam string steel support and the soil during soil excavation, monitors the construction site, increases monitoring interaction among workers, analyzes the safety of soil excavation operations in the construction area, the safety of the beam string steel support, and the management safety of the construction area, and performs corresponding management, thereby realizing multi-dimensional monitoring of the beam string steel support safety assessment, improving the reliability and reference of the beam string steel support safety assessment results, ensuring the safety of equipment operation and soil excavation operations at the construction site, improving the management efficiency and effectiveness of the construction site, ensuring the safety of the beam string steel support and the soil, improving the stability of the beam string steel support, and reducing the risk of accidents at the construction site.

[0066] The above content is merely an example and explanation of the concept of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined in this specification, they should all fall within the scope of protection of the present invention.

Claims

1. A safety assessment method for assembled beam string steel supports, characterized in that: The steps include: S1. During a soil sampling process, several collection periods are arranged according to a preset soil sampling plan, and soil sampling video data is collected in the construction area during each collection period. At the same time, several collection devices are installed in the construction area, and the collection devices are used to collect monitoring data corresponding to the tensile beam steel support and basic soil data during each collection period at a preset collection frequency, and then transmitted to the server; S2. When taking soil, the soil workers upload the adjustment data and manual inspection data of the steel support of the beam string during each collection period according to the requirements of the soil plan; S3. The server receives the soil excavation video data, the corresponding monitoring data of the beam string steel support during each collection period, and the basic soil data during each collection period, and processes the data. The server also uses the adjustment data and manual inspection data of the beam string steel support during each collection period to analyze the safety of soil excavation operations in the construction area, the safety of the beam string steel support, and the management safety of the construction area, and comprehensively analyzes the construction safety of the beam string steel support during soil excavation. S4. Implement the corresponding construction management plan for the construction safety of the beam string steel support during soil excavation; The analysis process of the safety of soil excavation operations in the construction area is as follows: Based on the three-dimensional model of the construction area, the position of the steel support of the beam string closest to the earth-boring area is selected as the target point. A circle is drawn with the target point as the center and the preset safety separation distance as the radius. The area within the circle is the safety impact area. The safety impact area is compared with the movement trajectory of the earth-boring equipment in each collection period. The part where the safety impact area and the movement trajectory overlap is selected as the first marking operation trajectory, and the length of the first marking operation trajectory in each collection period is obtained. Similarly, the safety impact area is compared with the movement trajectory of the soil workers in each collection period to obtain the length of the second marking operation trajectory in each collection period; the safety impact area is compared with the movement trajectory of the soil pile in each collection period to obtain the length of the third marking operation trajectory in each collection period; The lengths of the first, second, and third marking operation trajectories in each acquisition period are input into a soil excavation operation safety assessment model, and a safety result of soil excavation operation in the construction area is output. The safety result of soil excavation operation in the construction area contains data of 1 and 0. When the safety result of soil excavation operation in the construction area is 1, it indicates that the soil excavation operation in the construction area is safe. When the safety result of soil excavation operation in the construction area is 0, it indicates that the soil excavation operation in the construction area is dangerous. The calculation process of the safety results of soil excavation operation in the construction area is as follows: The length of the first marking operation track, the length of the second marking operation track, and the length of the third marking operation track in each acquisition period are respectively recorded as 、 and , t represents the number of each collection period, t is a positive integer; Obtain the historical soil excavation records, set the scale factor of the first mark operation trajectory, the scale factor of the second mark operation trajectory, and the scale factor of the third mark operation trajectory, which are respectively recorded as 、 and ; The safety assessment model expression of soil excavation operation is: , where represents the safety result of soil sampling operation in the construction area, p represents the number of sampling periods, 、 、 They represent the length of the moving track of the earth-taking equipment, the length of the moving track of the earth-taking worker, and the length of the moving track of the earth pile in the t-th collection period, respectively. is the preset soil excavation safety assessment factor threshold; The analysis process of the beam string steel support safety is as follows: Obtaining a set of operational data of the earth-excavating equipment in the first marked operation trajectory during each acquisition period, calculating a first influence coefficient for the safety of the beam string steel support, obtaining the dimensions of the earth pile at each location within the third marked operation trajectory during each acquisition period, and calculating a second influence coefficient for the safety of the beam string steel support; Obtain historical soil excavation records from the server, analyze the proportional coefficients of the first and second influencing coefficients of the safety of the beam string steel support on various types of collected data, obtain the safety thresholds of various types of collected data from the server, and calculate the safety results of the beam string steel support using the various types of collected data corresponding to the beam string steel support in each collection period, the safety thresholds of various types of collected data, and the proportional coefficients of the first and second influencing coefficients of the safety of the beam string steel support on various types of collected data. The safety results of the beam string steel support contain data of 1 and 0. When the safety result of the beam string steel support is 1, it indicates that the beam string steel support is safe. When the safety result of the beam string steel support is 0, it indicates that the beam string steel support is dangerous. The calculation process of the safety result of the beam string steel support is as follows: The proportional coefficients of the first influence coefficient on each type of collected data and the proportional coefficients of the second influence coefficient on each type of collected data are respectively recorded as and , i represents the number of each type of collected data, i is a positive integer; The various types of collected data corresponding to the beam string steel support in each collection period and the safety thresholds of various types of collected data are recorded as and ; According to the analysis formula: , and the safety results of the steel support of the beam string are obtained , where represents the preset safety assessment threshold of the beam string steel support, and n represents the number of collected data types; The analysis process of the management safety of the construction area is as follows: Obtaining a soil sampling plan from the server, and obtaining reference monitoring data intervals of the soil at each sampling period, as well as a reference three-dimensional model and reference manual inspection data of the beam string steel support at each sampling period from the soil sampling plan; At the same time, the adjustment data of the beam string steel support in each acquisition period is imported into the three-dimensional model of the construction area to update the three-dimensional model of the beam string steel support in each acquisition period, and the reference three-dimensional model of the beam string steel support in each acquisition period is compared with the three-dimensional model to obtain the differential structural data of the beam string steel support in each acquisition period. The management safety result of the construction area is calculated using the reference monitoring data intervals, reference manual inspection data, various monitoring data, manual inspection data and differential structural data of the soil in each acquisition period. The management safety result of the construction area includes values ​​of 1 and 0. When the management safety result of the construction area is 1, it indicates that the management of the construction area is safe. When the management safety result of the construction area is 0, it indicates that the management of the construction area is dangerous. Calculation process of management safety results of the construction area: Compare the reference monitoring data intervals of the soil body in each collection period with the various monitoring data to obtain the differences of the various monitoring data of the soil body in each collection period. At the same time, compare the reference manual detection data of the soil body in each collection period with the manual detection data to obtain the differences of the manual detection data of the soil body in each collection period. Therefore, the differences of various monitoring data, manual detection data and differential structure data of the soil in each collection period are normalized and their values ​​are taken as 、 and , g represents the number of each type of monitoring data; According to the analysis formula , and obtain the management safety results of the construction area , where 、 、 Respectively represent the set first proportional coefficient, second proportional coefficient, and third proportional coefficient, It represents the management safety assessment coefficient threshold of the set construction area, and s represents the number of monitoring data types.

2. A safety assessment method for a prefabricated beam string steel support according to claim 1, characterized in that: The data processing process in S2 is as follows: S2-1. Divide the earth-excavation video data from each acquisition period into individual video frames, and use image recognition technology to obtain the position of the earth-excavation equipment, the position of the earth-excavation workers, and the position and size of the earth pile from each video frame. The positions of the earth-excavation equipment in each video frame corresponding to each acquisition period are sequentially imported into the three-dimensional model of the construction area to generate movement trajectories of the earth-excavation equipment during each acquisition period. Similarly, movement trajectories of the earth-excavation workers and the earth pile during each acquisition period are generated. S2-2. The monitoring data is composed of data collected by each collection device. The type corresponding to each collection device is obtained, and the monitoring data corresponding to the steel support of the tensile beam in each collection period is classified into various types of collection data according to the type corresponding to each collection device. Similarly, the basic data of the soil in each collection period is classified into various types of monitoring data.

3. The safety assessment method for a prefabricated beam string steel support according to claim 1, characterized in that: The comprehensive analysis of the construction safety of the steel beam string support during soil excavation is as follows: When at least one of the earth excavation operation in the construction area, the beam string steel support, and the management of the construction area is dangerous, it indicates that the construction safety of the beam string steel support during earth excavation is insufficient.

4. A safety assessment system for executing the safety assessment method for a prefabricated beam string steel support according to any one of claims 1 to 3, characterized in that: include: The first monitoring module is configured to arrange a number of collection periods according to a preset soil excavation plan during a soil excavation process, collect soil excavation video data from the construction area during each collection period, and simultaneously install a number of collection devices in the construction area, use the collection devices to collect monitoring data corresponding to the beam string steel support during each collection period and basic soil data during each collection period at a preset collection frequency, and send the data to the data analysis module; The worker monitoring module is used by earthwork workers to upload adjustment data and manual inspection data of the steel support of the beam string during each collection period according to the requirements of the earthwork plan. The data analysis module is used to receive the earth excavation video data, the corresponding monitoring data of the beam string steel support in each collection period, and the basic data of the soil in each collection period, and perform data processing. At the same time, the adjustment data and manual inspection data of the beam string steel support in each collection period are used to analyze the safety of earth excavation operations in the construction area, the safety of the beam string steel support, and the management safety of the construction area, and comprehensively analyze the construction safety of the beam string steel support during earth excavation; The execution module is used to implement the corresponding construction management plan for the construction safety of the steel support of the tensioned beam during soil excavation.

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