Steel truss structure monitoring method and monitoring system for squat silo roof construction

Abstract

The invention discloses a steel truss structure monitoring method and system for squat silo roof construction, and the system comprises a node sensing monitoring system which is used for monitoring and collecting the health data of a steel truss structure through a plurality of sensing nodes, converging the data at a comprehensive node, and transmitting the data to a data comprehensive processing system; the data comprehensive processing system is used for carrying out comprehensive processing and preliminary analysis on the data and then sending the data to a database for storage; the remote data analysis system is used for carrying out safety and health analysis on the steel truss structure by extracting the health data of the steel truss structure in the database, and sending an analysis result generated by the safety and health analysis of the steel truss structure to the display early warning system; and the display early warning system is used for triggering an early warning or alarm mechanism when the health data of the steel truss structure in the analysis result exceeds a preset threshold value. According to the invention, remote monitoring and data analysis are realized, the monitoring accuracy is improved, the monitoring timeliness is enhanced, the operability is simplified, and the effectiveness and reliability of monitoring are ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of construction monitoring, and in particular relates to a steel truss structure monitoring method and a monitoring system for shallow silo roof construction. Background Art

[0002] In the existing shallow silo roof formwork construction process, a steel truss structure construction device is usually used. The steel truss structure is a periodic temporary structure, which is usually removed after the shallow silo roof concrete curing period is 28 days and the strength reaches 100% of the design requirements. For temporary structures, the monitoring system is very imperfect. The steel truss structure is usually inspected and accepted after the bottom of the silo is assembled. There is a lack of monitoring during the entire lifting process and the roof formwork process, or it is basically monitored manually. Manual monitoring has the following defects: First, the accuracy is low. Manual monitoring is generally carried out by the naked eye, and the monitoring results are usually qualitative indicators. The monitoring results are of low accuracy and cannot be truly analyzed for structural safety. Second, the timeliness is poor. There are monitoring gaps in manual monitoring, and hidden dangers that occur during the gaps cannot be discovered in time. Second, the operation is complicated. Manual monitoring takes a long time and the workload is large. It takes a long time to manually complete all monitoring indicators, especially the monitoring of the silo roof steel truss structure is a high-altitude operation, which is cumbersome and inconvenient, inefficient, and has safety hazards. Summary of the invention

[0003] The purpose of the present invention is to provide a steel truss structure monitoring method and monitoring system for shallow silo roof construction, to achieve remote monitoring and data analysis, improve monitoring accuracy, enhance monitoring timeliness, simplify operability, and ensure the effectiveness and reliability of monitoring.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a steel truss structure monitoring system, including a node sensor monitoring system, a data comprehensive processing system, a remote data analysis system and a display warning system; wherein,

[0005] A node sensing monitoring system is provided with an integrated node and a plurality of sensing nodes provided on the steel truss structure, which is used to monitor and collect health data of the steel truss structure through the plurality of sensing nodes, and transmit the data to the data integrated processing system after aggregating the data at the integrated node;

[0006] Data comprehensive processing system, used to carry out comprehensive processing and preliminary analysis of data and then send it to the database for storage;

[0007] A remote data analysis system, used for performing a safety and health analysis of a steel truss structure by extracting the health data of the steel truss structure in a database, and sending the analysis results generated by the safety and health analysis of the steel truss structure to a display and early warning system;

[0008] Display early warning system, used to trigger early warning or alarm mechanism when the health data of steel truss structure in the analysis results exceeds the preset threshold.

[0009] The sensing nodes at least include structural stability nodes, structural key nodes and environmental sensing nodes; wherein,

[0010] Structural stability nodes are used to monitor the overall stability and deformation of the steel truss structure to ensure that the structure does not deform excessively or become unstable when subjected to loads;

[0011] Structural key nodes are used to ensure the safety and reliability of key nodes of steel truss structures. Key nodes of steel truss structures include at least connections and other parts with high stress;

[0012] Environmental sensing nodes are used to monitor the impact of environmental factors on the steel truss structure to ensure the safety and stability of the structure under different environmental conditions; environmental factors include at least wind load and temperature.

[0013] The health data of steel truss structure includes at least structural displacement data, structural strain data, structural vibration data and real-time environmental data.

[0014] The method for obtaining structural displacement data is: setting displacement sensors at key nodes of the steel truss structure to monitor the displacement changes of the steel truss structure in real time, and the displacement changes include horizontal displacement changes and vertical displacement changes.

[0015] The method for obtaining structural strain data is: setting strain sensors at key nodes of the steel truss structure, monitoring the stress and deformation of the steel truss structure in real time, and evaluating the stress state and safety of the steel truss structure.

[0016] The method for obtaining structural vibration data is: setting a vibration sensor on the steel truss structure to monitor the vibration information of the steel truss structure in real time. The vibration information at least includes the vibration frequency and amplitude to evaluate the dynamic performance of the steel truss structure.

[0017] The method for obtaining real-time environmental data is: an anemometer and a thermometer are set on the steel truss structure to monitor the impact of wind load and temperature on the steel truss structure in real time.

[0018] A method for monitoring a steel truss structure during construction of a silo roof is also provided, comprising the following steps: performing the following operations in the construction process of the steel truss structure of the silo roof by using a steel truss structure monitoring system as described in any one of the above items:

[0019] During the assembly and acceptance of the warehouse bottom, the stress and deformation of the steel truss structure during the assembly process are monitored in real time;

[0020] During the lifting process of the steel truss structure, the deformation and stress of the steel truss structure are tracked and recorded in real time to ensure the stability and safety of the structure during the lifting process;

[0021] During the entire process from top slab formwork to steel truss removal, the steel truss structure is monitored regularly to monitor the deformation and stress distribution of the steel truss structure when bearing the top slab load and other construction loads.

[0022] The construction process of the steel truss structure on the roof of a shallow circular silo includes at least the following processes: preparation of various equipment for steel truss construction, assembly of steel truss equipment at the silo bottom, arrangement of sensors at key nodes, installation of safety nets, installation of electric hoists, lifting of steel trusses to the corbel position and fixation, arrangement of structural stability monitoring devices, erection of formwork frames, formwork construction, steel bar binding, concrete pouring, concrete maintenance, formwork removal, removal of steel trusses, lowering to the silo bottom and clearing out of the silo.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention monitors the entire construction process of the steel truss structure of the roof of the shallow circular silo through the steel truss structure monitoring system, thereby realizing remote monitoring and data analysis; through high-precision sensors and data processing algorithms, the monitoring results are upgraded from qualitative indicators to quantitative indicators, thereby improving the accuracy of the monitoring results; the monitoring data are processed and analyzed using data analysis software, thereby timely discovering safety hazards in the steel truss structure; the structural status can be continuously and uninterruptedly monitored, the gaps in manual monitoring are eliminated, the hidden dangers are discovered and handled in time, and an early warning system is set up at the same time, and when the monitoring data exceeds a preset threshold, an alarm is triggered to remind relevant personnel to take timely measures; the workload of manual monitoring can be greatly reduced, and the monitoring efficiency can be improved; through remote monitoring and data analysis, the risks and inconveniences of high-altitude operations can be reduced; and according to the characteristics and stress conditions of the steel truss structure, the structural optimization design is carried out to improve the stability and safety of the structure, and the layout and installation requirements of the monitoring system are considered during the design process to ensure the effectiveness and reliability of the monitoring system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the working process of the steel truss structure monitoring system in an embodiment of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the steel truss of the shallow silo roof in an embodiment of the present invention;

[0027] Figure 3 It is a layout diagram of the overall stability and displacement settlement monitoring points of the steel truss structure in an embodiment of the present invention;

[0028] In the figure, 1-center tube structure, 2-steel truss radial beam, 3-support diagonal rod, 4-tension horizontal rod, 5-center plate, 6-column, 7-corbel. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] The technical solution of the present invention is: a steel truss structure monitoring system, including a node sensor monitoring system, a data comprehensive processing system, a remote data analysis system and a display warning system; wherein,

[0031] A node sensing monitoring system is provided with an integrated node and a plurality of sensing nodes provided on the steel truss structure, which is used to monitor and collect health data of the steel truss structure through the plurality of sensing nodes, and transmit the data to the data integrated processing system after aggregating the data at the integrated node;

[0032] Data comprehensive processing system, used to carry out comprehensive processing and preliminary analysis of data and then send it to the database for storage;

[0033] A remote data analysis system, used for performing a safety and health analysis of a steel truss structure by extracting the health data of the steel truss structure in a database, and sending the analysis results generated by the safety and health analysis of the steel truss structure to a display and early warning system;

[0034] Display early warning system, used to trigger early warning or alarm mechanism when the health data of steel truss structure in the analysis results exceeds the preset threshold.

[0035] The sensing nodes at least include structural stability nodes, structural key nodes and environmental sensing nodes; wherein,

[0036] Structural stability nodes are used to monitor the overall stability and deformation of the steel truss structure to ensure that the structure does not deform excessively or become unstable when subjected to loads;

[0037] Structural key nodes are used to ensure the safety and reliability of key nodes of steel truss structures. Key nodes of steel truss structures include at least connections and other parts with high stress;

[0038] Environmental sensing nodes are used to monitor the impact of environmental factors on the steel truss structure to ensure the safety and stability of the structure under different environmental conditions; environmental factors include at least wind load and temperature.

[0039] The health data of steel truss structure includes at least structural displacement data, structural strain data, structural vibration data and real-time environmental data.

[0040] The method for obtaining structural displacement data is: setting displacement sensors at key nodes of the steel truss structure to monitor the displacement changes of the steel truss structure in real time, and the displacement changes include horizontal displacement changes and vertical displacement changes.

[0041] The method for obtaining structural strain data is: setting strain sensors at key nodes of the steel truss structure, monitoring the stress and deformation of the steel truss structure in real time, and evaluating the stress state and safety of the steel truss structure.

[0042] The method for obtaining structural vibration data is: setting a vibration sensor on the steel truss structure to monitor the vibration information of the steel truss structure in real time. The vibration information at least includes the vibration frequency and amplitude to evaluate the dynamic performance of the steel truss structure.

[0043] The method for obtaining real-time environmental data is: an anemometer and a thermometer are set on the steel truss structure to monitor the impact of wind load and temperature on the steel truss structure in real time.

[0044] A method for monitoring a steel truss structure during construction of a silo roof is also provided, comprising the following steps: performing the following operations in the construction process of the steel truss structure of the silo roof by using a steel truss structure monitoring system as described in any one of the above items:

[0045] During the assembly and acceptance of the warehouse bottom, the stress and deformation of the steel truss structure during the assembly process are monitored in real time;

[0046] During the lifting process of the steel truss structure, the deformation and stress of the steel truss structure are tracked and recorded in real time to ensure the stability and safety of the structure during the lifting process;

[0047] During the entire process from top slab formwork to steel truss removal, the steel truss structure is monitored regularly to monitor the deformation and stress distribution of the steel truss structure when bearing the top slab load and other construction loads.

[0048] The construction process of the steel truss structure on the roof of a shallow circular silo includes at least the following processes: preparation of various equipment for steel truss construction, assembly of steel truss equipment at the silo bottom, arrangement of sensors at key nodes, installation of safety nets, installation of electric hoists, lifting of steel trusses to the corbel position and fixation, arrangement of structural stability monitoring devices, erection of formwork frames, formwork construction, steel bar binding, concrete pouring, concrete maintenance, formwork removal, removal of steel trusses, lowering to the silo bottom and clearing out of the silo.

[0049] Reference Figure 1 , Figure 2 and Figure 3 The present invention discloses a method for monitoring a steel truss structure of a shallow silo roof.

[0050] The steel truss structure of the shallow circular silo roof comprises a central tube structure 1, steel truss radial beams 2, supporting diagonal rods (3), tension horizontal rods 4 and corbels 7.

[0051] The construction process of the shallow circular silo roof steel truss structure is as follows: preparation of various equipment for steel truss construction, assembly of steel truss equipment at the silo bottom, arrangement of sensors at key nodes, installation of safety nets, installation of electric hoists, lifting of steel trusses to the corbel position and fixing them, arrangement of structural stability monitoring devices, erection of formwork frames, formwork construction, steel bar binding, concrete pouring, concrete maintenance, formwork removal, removal of steel trusses, lowering to the silo bottom and cleaning out of the silo.

[0052] The structure of the steel truss structure monitoring system is: node sensor monitoring system, data comprehensive processing system, remote data analysis system, display and early warning system.

[0053] Specifically, multiple types of sensor nodes in the node sensor monitoring system monitor and collect the health data of the steel truss structure, gather the data at the integrated node, and then transmit it to the data integrated processing system. The data integrated processing system performs integrated processing and preliminary analysis on the data and then sends it to the database for storage. The remote data analysis system extracts relevant data from the database to perform safety and health analysis on the steel truss structure, and sends the analysis and comparison results to the display and early warning system. When the monitoring data exceeds the preset threshold, the early warning or alarm mechanism is triggered.

[0054] Furthermore, the sensing nodes include structural stability nodes, structural key nodes, and environmental sensing nodes.

[0055] The structural stability node is used to monitor the overall stability and displacement settlement of the steel truss structure. Figure 3 In this embodiment, 8 monitoring points are evenly set at the position of 200mm from the wall of the steel truss bracket on the top of the warehouse, and 1 monitoring point is set at the center of the center plate (such as Figure 3 8 small dots set in the middle and the black dot in the center). Tilt sensors are arranged at the 8 monitoring points of the corbels, and the tilt angles of the locations are monitored in real time through the tilt sensors to ensure the horizontal displacement of the steel truss structure. Static levels are arranged at the monitoring points at the center of the center plate, and the vertical displacement of the locations is monitored in real time through the static levels. Real-time data from structural stability node monitoring ensures that the structure will not undergo excessive displacement or deformation during the construction process, so as to avoid overall instability of the steel truss structure.

[0056] Structural key nodes For key nodes of steel truss structures, such as connections and parts with greater stress, the safety and reliability of steel truss structures are ensured by real-time monitoring of displacement, strain and vibration data at key nodes.

[0057] Specifically, refer to Figure 2, describing the monitoring implementation process of some key nodes in this embodiment. Key node 1: the connection between the steel truss radial beam 2, the supporting diagonal rod 3 and the tension horizontal rod 4 and the center plate 5 with high-strength bolts. Key node 2: the connection between the supporting diagonal rod 3 and the steel truss radial beam 2. Key node 3: the welding point between the steel truss radial beam 2 and the bracket 7. During the assembly stage of the steel truss structure, the inclination sensor and the strain sensor are set at the key nodes 1 and 2. Before installation, the surface of the installation part is cleaned to ensure that there is no impurities such as oil, dust, etc. According to the installation instructions of the sensor, it is firmly pasted or installed in the predetermined position. Ensure that the measurement direction of the sensor is consistent with the force direction. Connect the signal line of the sensor to the data acquisition system. Then debug the sensor to ensure that it can work normally and accurately measure data changes. Set a vibration sensor during the lifting process to monitor the vibration of the structure in real time, including vibration frequency, amplitude, etc., to evaluate the dynamic performance of the structure. Real-time monitoring is still required during the entire process from the top plate formwork to the removal of the steel truss, and regular collection of structural health data is performed for structural safety assessment. For key node 3, displacement sensors are set up in the whole process from top plate formwork to steel truss removal to monitor the horizontal and vertical displacement of the node in real time. Strain sensors are set up at the bending, connection or stress concentration point of the corbel to monitor the strain of the structure in real time and evaluate the stress state and safety of the structure. For other key structural nodes, real-time monitoring should be carried out to timely discover potential safety hazards, ensure the safety and stability of the structure, and take corresponding measures for inspection and maintenance according to the monitoring results to improve the service life and safety of the shallow silo.

[0058] The environmental sensing node takes into account the impact of environmental factors such as wind load and temperature on the steel truss structure, and monitors the impact of environmental factors such as wind load and temperature on the steel truss structure in real time by setting environmental monitoring equipment such as anemometers and thermometers to ensure the safety and stability of the structure under different environmental conditions. This embodiment is not described.

[0059] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel truss structure monitoring system, characterized in that: It includes node sensor monitoring system, data comprehensive processing system, remote data analysis system and display warning system; among them, A node sensing monitoring system is provided with an integrated node and a plurality of sensing nodes provided on the steel truss structure, which is used to monitor and collect health data of the steel truss structure through the plurality of sensing nodes, and transmit the data to the data integrated processing system after aggregating the data at the integrated node; Data comprehensive processing system, used to carry out comprehensive processing and preliminary analysis of data and then send it to the database for storage; A remote data analysis system, used for performing a safety and health analysis of a steel truss structure by extracting the health data of the steel truss structure in a database, and sending the analysis results generated by the safety and health analysis of the steel truss structure to a display and early warning system; Display early warning system, used to trigger early warning or alarm mechanism when the health data of steel truss structure in the analysis results exceeds the preset threshold.

2. A steel truss structure monitoring system according to claim 1, characterized in that: The sensing nodes at least include structural stability nodes, structural key nodes and environmental sensing nodes; wherein, Structural stability nodes are used to monitor the overall stability and deformation of the steel truss structure to ensure that the structure does not deform excessively or become unstable when subjected to loads; Structural key nodes are used to ensure the safety and reliability of key nodes of steel truss structures. Key nodes of steel truss structures include at least connections and other parts with high stress; Environmental sensing nodes are used to monitor the impact of environmental factors on the steel truss structure to ensure the safety and stability of the structure under different environmental conditions; environmental factors include at least wind load and temperature.

3. A steel truss structure monitoring system according to claim 2, characterized in that: The health data of steel truss structure includes at least structural displacement data, structural strain data, structural vibration data and real-time environmental data.

4. A steel truss structure monitoring system according to claim 3, characterized in that: The method for obtaining structural displacement data is: setting displacement sensors at key nodes of the steel truss structure to monitor the displacement changes of the steel truss structure in real time, and the displacement changes include horizontal displacement changes and vertical displacement changes.

5. The steel truss structure monitoring system according to claim 3, characterized in that: The method for obtaining structural strain data is: setting strain sensors at key nodes of the steel truss structure, monitoring the stress and deformation of the steel truss structure in real time, and evaluating the stress state and safety of the steel truss structure.

6. A steel truss structure monitoring system according to claim 3, characterized in that: The method for obtaining structural vibration data is: setting a vibration sensor on the steel truss structure to monitor the vibration information of the steel truss structure in real time. The vibration information at least includes the vibration frequency and amplitude to evaluate the dynamic performance of the steel truss structure.

7. A steel truss structure monitoring system according to claim 3, characterized in that: The method for obtaining real-time environmental data is: an anemometer and a thermometer are set on the steel truss structure to monitor the impact of wind load and temperature on the steel truss structure in real time.

8. A method for monitoring a steel truss structure for shallow silo roof construction, characterized in that: The following steps are involved: In the construction process of the steel truss structure of the silo roof, the following operations are performed by using a steel truss structure monitoring system as described in any one of claims 1 to 7: During the assembly and acceptance of the warehouse bottom, the stress and deformation of the steel truss structure during the assembly process are monitored in real time; During the lifting process of the steel truss structure, the deformation and stress of the steel truss structure are tracked and recorded in real time to ensure the stability and safety of the structure during the lifting process; During the entire process from top slab formwork to steel truss removal, the steel truss structure is monitored regularly to monitor the deformation and stress distribution of the steel truss structure when bearing the top slab load and other construction loads.

9. The method for monitoring the steel truss structure of the silo roof construction according to claim 8 is characterized in that: The construction process of the steel truss structure on the roof of a shallow circular silo includes at least the following processes: preparation of various equipment for steel truss construction, assembly of steel truss equipment at the silo bottom, arrangement of sensors at key nodes, installation of safety nets, installation of electric hoists, lifting of steel trusses to the corbel position and fixation, arrangement of structural stability monitoring devices, erection of formwork frames, formwork construction, steel bar binding, concrete pouring, concrete maintenance, formwork removal, removal of steel trusses, lowering to the silo bottom and clearing out of the silo.

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