Intelligent monitoring system for light steel structure

Abstract

The invention relates to the technical field of building structure monitoring, in particular to an intelligent monitoring system for a light steel structure, which comprises an environmental data acquisition module used for acquiring environmental data in a monitoring period, a structural data acquisition module used for acquiring parameters of the light steel structure and structural deformation data in the monitoring period, and a stress analysis module used for analyzing the parameters of the light steel structure and the structural deformation data in the monitoring period. The system comprises an overall wind pressure analysis module for analyzing the overall wind pressure state of the light steel building, a lateral load analysis module for constructing a wind force vector and analyzing the stress state of a ground beam column, a transverse deformation monitoring module for analyzing the transverse deformation state of the light steel building, and a vertical load analysis module for analyzing the overall wind pressure state of the light steel building. The analysis module is used for analyzing the vertical load state of the light steel building in the monitoring period, and the stability analysis module is used for analyzing the stability of the light steel building in the monitoring period. The monitoring efficiency of the light steel structure is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of building structure monitoring, and in particular to an intelligent monitoring system for light steel structures. Background Art

[0002] With the development of modern construction technology, light steel structures are widely used in various construction projects due to their advantages such as light weight, high strength and fast construction speed. However, light steel structures may be deformed or damaged during long-term use due to environmental factors (such as temperature changes, humidity effects), material aging or external forces (such as wind loads, earthquakes), posing a threat to the safety of buildings. Traditional manual detection methods are not only inefficient but also difficult to achieve real-time monitoring of structures. Therefore, a system that can intelligently monitor light steel structures is needed to ensure their safety and stability.

[0003] Chinese patent publication number CN105787820A discloses a light steel keel partition wall structure with a real-time monitoring function, including a light steel keel partition wall body and an intelligent monitoring system arranged on the light steel keel partition wall body, the system including a monitoring module, a data processing module, a safety status assessment module, an early warning alarm module and a simulation display module, wherein the monitoring module includes a wireless sensor network, a strain sensor assembly and a displacement sensor, the data processing module includes an acquisition center station, a signal conditioner and a signal transmission device, the safety status assessment module includes a microprocessor, the early warning alarm module includes an analysis processor and an alarm, and the simulation display module includes a three-dimensional GIS simulation platform; it can be seen that the process of monitoring the light steel keel structure of the invention is to conduct long-term monitoring of the target to estimate the actual life of the target, and no real-time and accurate status assessment of the target is performed, and there is a problem of low efficiency in monitoring the light steel structure. Summary of the invention

[0004] The object of the present invention is to provide an intelligent monitoring system for light steel structures to solve at least one of the problems existing in the prior art.

[0005] To achieve the above object, the present invention adopts the following technical solutions: An intelligent monitoring system for light steel structure, characterized by comprising: Environmental data collection module, used to collect environmental data within the monitoring period; Structural data acquisition module, used to collect light steel structure parameters and structural deformation data within the monitoring period; The stress analysis module is used to analyze the overall wind pressure status of the light steel building based on the environmental data within the monitoring period; The lateral load analysis module is used to construct the wind vector according to the environmental wind pressure data within the monitoring period, and analyze the stress state of the ground beams and columns according to the wind vector and light steel structure parameters; The lateral deformation monitoring module is used to analyze the lateral deformation state of the light steel building according to the overall wind pressure state analysis results of the light steel building, the ground beam and column stress state analysis results and the structural deformation data during the monitoring period; The vertical load analysis module is used to analyze the vertical load status of the light steel building during the monitoring period according to the environmental snow pressure data and the vertical load weight of the light steel building during the monitoring period; The stability analysis module is used to analyze the stability of the light steel building during the monitoring period according to the analysis results of the lateral deformation state and the vertical load state of the light steel building during the monitoring period.

[0006] Furthermore, the force analysis module includes a local wind pressure analysis unit, which is used to analyze the wind pressure status of each wall keel load-bearing area during the monitoring period according to the environmental wind pressure data and the light steel structure parameters. The analysis results of the wind pressure status of each wall keel load-bearing area include normal and abnormal, and when the wind pressure status is abnormal, the wind pressure anomaly index fy(i) of the wall keel load-bearing area is constructed.

[0007] Furthermore, the force analysis module also includes an overall wind pressure analysis unit, which is used to calculate the lateral force anomaly index μ according to the wind pressure state analysis results of each wall keel load-bearing area during the monitoring period, and analyze the overall wind pressure state of the light steel building according to the lateral force anomaly index μ. The overall wind pressure state of the light steel building includes normal and abnormal.

[0008] Furthermore, the system also includes an environmental monitoring module, which is used to adjust the analysis process of the wind pressure state of each wall keel bearing area according to the environmental data within the monitoring period; The environmental monitoring module includes a temperature difference analysis unit, which is used to calculate the structural temperature difference c according to the indoor temperature and the outdoor temperature of the light steel building during the monitoring period, and analyze the temperature difference stress according to the calculation result of the structural temperature difference. The analysis results of the temperature difference stress include normal and abnormal, and when the temperature difference stress is abnormal, the standard bearing wind pressure of the keel is adjusted to FM'.

[0009] Furthermore, the environmental monitoring module also includes a vibration load analysis unit, which is used to analyze the vibration load state of the light steel building according to the vibration amplitude within the monitoring period. The vibration load state of the light steel building includes normal and abnormal. When the vibration load state is abnormal, the preset structural temperature difference constant is optimized to C'.

[0010] Further, the lateral load analysis module is used to set the wind vector Ve(i) of each wall keel load-bearing area according to the environmental wind pressure data in the monitoring period, and calculate the light steel building bearing wind force α according to the wind vector of each wall keel load-bearing area; The lateral load analysis module analyzes the stress state of the ground beams and columns according to the wind force α of the light steel building and the lateral force HF of the ground beams and columns. The analysis results of the stress state of the ground beams and columns include normal and abnormal.

[0011] Furthermore, the lateral deformation monitoring module is used to analyze the lateral deformation state of the light steel building according to the wind pressure state analysis results of the light steel building during the monitoring period, the ground beam and column stress state analysis results and the structural deformation data. The lateral deformation state analysis results of the light steel building include normal, abnormal keel bending, abnormal beam and column bearing and abnormal lateral deformation.

[0012] Furthermore, the vertical load analysis module is used to analyze the vertical load status of the light steel building during the monitoring period according to the environmental snow pressure data and the vertical load weight of the light steel building during the monitoring period. The vertical load status analysis results of the light steel building include normal, abnormal top pressure and abnormal structural load.

[0013] Furthermore, the stability analysis module includes a stability analysis unit, which is used to analyze the stability state of the light steel building within the monitoring period according to the lateral deformation state analysis results and the vertical load state analysis results of the light steel building within the monitoring period: If the lateral deformation state of the light steel building is normal and the vertical load state is normal, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is stable; If the lateral deformation state of the light steel building is lateral deformation abnormality, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is primary structural abnormality; If the lateral deformation state of the light steel building is lateral deformation abnormality and the vertical load state is top pressure abnormality, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is level 3 top beam abnormality; If the lateral deformation state of the light steel building is abnormal keel bending or abnormal beam and column bearing and the vertical load state is normal, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is abnormal third-level side beam; If the vertical load state is abnormal keel bending or beam-column bearing and the vertical load state is abnormal top pressure or abnormal structural load, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is abnormal first-level ground beam; If the lateral deformation state of the light steel building is lateral deformation abnormality and the vertical load state is normal, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is secondary ground beam abnormality.

[0014] Furthermore, the stability analysis module also includes an alarm unit, which is used to alarm the user according to the analysis results of the stability state of the light steel building during the monitoring period: if the stability state of the light steel building during the monitoring period is a first-level structural abnormality or a first-level ground beam abnormality, the alarm unit sends an emergency safety alarm to the user; if the stability state of the light steel building during the monitoring period is a second-level ground beam abnormality, the alarm unit sends a building renovation alarm to the user; if the stability state of the light steel building during the monitoring period is a third-level side beam abnormality or a third-level top beam abnormality, the alarm unit sends a local renovation alarm to the user; if the stability state of the light steel building during the monitoring period is stable, the alarm unit does not send an alarm signal to the user.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: by processing the wind pressure data of the light steel building constructed with the light steel structure, it is determined whether the overall wind pressure on the light steel building exceeds the set standard, and then whether the lateral load of the light steel structure exceeds the bearing capacity of its ground beams and columns; the lateral deformation state is monitored and the results are classified by comprehensively considering the overall wind pressure state and the stress state of the ground beams and columns to determine the type of the lateral monitoring result; the vertical load state of the light steel building is analyzed by combining the snow pressure on the top of the building and the internal load weight of the building, and the abnormal situation of the vertical load dimension is determined; finally, the building stability is analyzed in combination with the above analysis results, and an alarm is issued to the user, thereby realizing efficient monitoring of the light steel structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. 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 creative work.

[0017] Figure 1 Schematic diagram of the structure of the intelligent monitoring system for light steel structure in this embodiment.

[0018] Figure 2 Schematic diagram of the structure of the force analysis module of this embodiment.

[0019] Figure 3 Schematic diagram of the structure of the environmental monitoring module of this embodiment.

[0020] Figure 4 Schematic diagram of the structure of the stability analysis module of this embodiment. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with preferred embodiments and accompanying drawings. Similar components in the accompanying drawings are represented by the same reference numerals. It should be understood by those skilled in the art that the content specifically described below is illustrative rather than restrictive, and should not be used to limit the scope of protection of the present invention.

[0022] It should be noted that, although the terms first, second, third, etc. may be used to describe in the embodiments of the present application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, without departing from the scope of the embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first.

[0023] Specifically, the intelligent monitoring system for light steel structure described in this embodiment is applied to the intelligent monitoring of light steel keel structure; the light steel keel structure is a light steel keel structure of a civil house, and the civil house described in this embodiment is specifically built in a high-altitude snowy area; the light steel keel structure described in this embodiment connects the light steel keel structure to the ground through ground beams and columns, and the light steel keel structure consists of multiple wall keels, top keels and connection nodes.

[0024] See also Figure 1 As shown, it is a structural schematic diagram of the intelligent monitoring system for light steel structure according to this embodiment, including: An environmental data acquisition module is used to collect environmental data within a monitoring period; the environmental data includes indoor temperature, outdoor temperature, environmental wind pressure data, environmental snow pressure data and vibration amplitude, the environmental wind pressure data is the wind pressure of the light steel building, and the environmental snow pressure data is the pressure caused by snow accumulation on the roof of the light steel building; the environmental wind pressure data and environmental snow pressure data are data sets within each unit area of ​​the light steel building.

[0025] Specifically, this embodiment does not impose any specific limitation on the value of the duration of the monitoring period, and those skilled in the art can set it freely as long as the value requirement of the duration of the monitoring period is met. In this embodiment, the value of the duration of the monitoring period is 1 hour. At the same time, the environmental data is collected in this embodiment by setting temperature sensors indoors and outdoors of the light steel building to obtain indoor and outdoor temperatures, by setting multiple pressure sensors between the keel and the outer windproof material to collect environmental wind pressure and environmental snow pressure, and by using a vibration sensor to collect vibration amplitude.

[0026] Please continue reading Figure 1 As shown, the system also includes: A structural data acquisition module is used to collect light steel structure parameters and structural deformation data within a monitoring period; the light steel structure parameters include standard seismic amplitude of light steel structure, standard wind pressure bearing of keel, single standard load weight of ground beams and columns, standard load weight of single top keel, lateral force bearing of ground beams and columns, and keel deformation threshold, the keel deformation threshold is the keel deformation angle threshold, and its numerical value is a radian angle; the structural deformation data includes the deformation amount of each wall keel, and the deformation amount of each wall keel in this embodiment is the angle of inward or outward bending of the two ends of the keel.

[0027] Specifically, this embodiment does not specifically limit the method for collecting light steel structure parameters and structural deformation data. Technical personnel in this field can set it freely as long as the collection requirements of light steel structure parameters and structural deformation data are met. In this embodiment, light steel structure parameters are collected through user interactive input, and structural deformation data are monitored and obtained by setting displacement sensors.

[0028] Please continue reading Figure 1 As shown, the system also includes: A stress analysis module is connected to the environmental data acquisition module and the structural data acquisition module, and is used to analyze the overall stress state of the light steel building according to the environmental data within a monitoring period.

[0029] See also Figure 2 As shown, the force analysis module includes a local wind pressure analysis unit, which is used to analyze the wind pressure state of each wall keel load-bearing area during the monitoring period according to the environmental wind pressure data and the light steel structure parameters, and the wind pressure state refers to whether the wind pressure of the wall keel load-bearing area exceeds the set range: if f(i) <FM, the local wind pressure analysis unit determines that the wind pressure state of the wall keel load-bearing area during the monitoring period is normal; if f(i) ≥FM, the local wind pressure analysis unit determines that the wind pressure state of the wall keel load-bearing area during the monitoring period is abnormal, and constructs the wind pressure anomaly index fy(i) of the wall keel load-bearing area, and sets fy(i) = [f(j) -FM] / FM; by comparing and judging the pressure state of each local wall keel load-bearing area in the light steel building, it is determined whether the load-bearing state of the keel in each area is normal, and its purpose is to monitor the wind pressure of each keel and provide data support for the overall wind pressure state; Among them, f(i) is the wind pressure in the load-bearing area of ​​the i-th wall keel in the light steel building, and FM is the standard bearing wind pressure of the keel.

[0030] Specifically, the load-bearing area of ​​the wall keel is the force-bearing area supported by the keel in the light steel structure. In this embodiment, the load-bearing area of ​​the wall keel between two adjacent keels is divided by the central axis; it can be understood that the load-bearing area of ​​the wall keel described in this embodiment is a rectangular area of ​​different sizes.

[0031] Please continue reading Figure 2 As shown, the force analysis module also includes an overall wind pressure analysis unit, which is connected to the local wind pressure analysis unit. The overall wind pressure analysis unit is used to analyze the overall wind pressure state of the light steel building according to the wind pressure state analysis results of the load-bearing areas of each wall keel during the monitoring period, and the overall wind pressure state refers to whether the transmitted wind pressure received by each wall keel of the light steel building meets the set range; The overall wind pressure analysis unit calculates the lateral force abnormality index μ according to the wind pressure state analysis results of each wall keel bearing area during the monitoring period, and sets μ=Σ{fy(j)} / N1; wherein fy(j) represents the wind pressure abnormality index of the wall keel bearing area with abnormal wind pressure state j, and N1 is the number of wall keels of the light steel structure; The overall wind pressure analysis unit analyzes the overall wind pressure state of the light steel building according to the lateral force abnormality index μ: if μ<U, the overall wind pressure analysis unit determines that the overall wind pressure state of the light steel building during the monitoring period is normal; if μ≥U, the overall wind pressure analysis unit determines that the overall wind pressure state of the light steel building during the monitoring period is abnormal; wherein U is a preset lateral force abnormality index; the overall wind pressure analysis unit takes the light steel building as a whole as the analysis object and analyzes the overall force of the light steel building, with the purpose of further determining the overall impact of the local wall keel.

[0032] Specifically, this embodiment does not impose any specific limitation on the value of the preset lateral force abnormality index U. Those skilled in the art can freely set it as long as the value requirement of the preset lateral force abnormality index U is met. In this embodiment, the optimal value of the preset lateral force abnormality index U is 0.05.

[0033] Please continue reading Figure 1 As shown, the system also includes: An environmental monitoring module is connected to the force analysis module, and the environmental analysis module is used to adjust the analysis process of the wind pressure state of each wall keel load-bearing area according to the environmental data within the monitoring period.

[0034] Please continue reading Figure 3 As shown, the environment monitoring module also includes: The temperature difference analysis unit is connected to the local wind pressure analysis unit, and the temperature difference analysis unit is used to calculate the structural temperature difference c according to the indoor temperature and outdoor temperature of the light steel building during the monitoring period, and set c=(t 内 -t 外 ) / t 内 , where t 内 is the indoor temperature during the monitoring period, t 外 is the outdoor temperature during the monitoring period; The temperature difference analysis unit is used to analyze the temperature difference stress according to the calculation result of the temperature difference of the structure, and adjust the analysis process of the wind pressure state of each wall keel load-bearing area according to the analysis result of the temperature difference stress: if c<C, the temperature difference analysis unit determines that the temperature difference stress is normal during the monitoring period and does not make any adjustment; if c≥C, the temperature difference analysis unit determines that the temperature difference stress is abnormal during the monitoring period, and adjusts the standard bearing wind pressure of the keel to FM', setting FM'=FM×ln[1+(cC) / C]; by analyzing the temperature stress caused by the temperature difference inside and outside the structure, and further adjusting the analysis process of the wind pressure state of the local wall keel load-bearing area, the analysis result of the overall wind pressure state is made more accurate; Where C is the preset structural temperature difference constant.

[0035] Specifically, this embodiment does not specifically limit the value of the preset structural temperature difference constant C. Those skilled in the art can freely set it as long as the value requirement of the preset structural temperature difference constant C is met. In this embodiment, the optimal value of the preset structural temperature difference constant C is 0.5.

[0036] Please continue reading Figure 3 As shown, the environment monitoring module also includes: A vibration load analysis unit, the vibration load analysis unit is connected to the temperature analysis unit, and the vibration load analysis unit is used to analyze the vibration load state of the light steel building according to the vibration amplitude within the monitoring period, and optimize the adjustment process of the wind pressure state of each wall keel bearing area according to the analysis result: if zf<ZF, the vibration load analysis unit determines that the vibration load state of the light steel building is normal; if zf≥ZF, the vibration load analysis unit determines that the vibration load state of the light steel building is abnormal, and optimizes the preset structural temperature difference constant to C', setting C'=C×exp{(ZF-zf) / ZF}; the vibration load analysis unit optimizes the phenomenon of error in temperature stress in the local wall keel bearing area caused by vibration, so that the analysis result of the overall wind pressure state is more accurate; Among them, ZF is the standard seismic amplitude of light steel structure, and zf is the vibration amplitude of light steel building during the monitoring period.

[0037] Please continue reading Figure 1As shown, the system also includes: A lateral load analysis module, which is connected to the environmental data acquisition module and the structural data acquisition module, and is used to construct a wind vector according to the environmental wind pressure data within a monitoring period, and to analyze the stress state of the ground beams and columns according to the wind vector and light steel structure parameters; The lateral load analysis module is used to set the wind vector Ve(i) of each wall keel bearing area according to the environmental wind pressure data in the monitoring period, wherein Ve(i) represents the wind vector of the i-th wall keel bearing area; The lateral load analysis module is also used to calculate the wind force α of the light steel building according to the wind vector of each wall keel load-bearing area, and set α=ΣVe(i); The lateral load analysis module analyzes the stress state of the ground beams and columns according to the wind force α borne by the light steel building and the lateral force HF borne by the ground beams and columns: if |α|<HF×n2, the lateral load analysis module determines that the stress state of the ground beams and columns of the light steel building during the monitoring period is normal; if |α|≥HF×n2, the lateral load analysis module determines that the stress state of the ground beams and columns of the light steel building during the monitoring period is abnormal; wherein n2 is the number of ground beams and columns in the light steel structure of the light steel building; by constructing a wind vector to integrate the overall force direction of the light steel building, the wind resultant force of the light steel building is calculated, and then the stress state of the ground beams and columns of the light steel building is analyzed to determine whether the lateral force will cause the building foundation to loosen, providing the closest analysis result for the analysis process of the lateral deformation state.

[0038] It can be understood that in this embodiment, the lateral force borne by each ground beam and column is the same; the setting process of the wind vector Ve(i) of each wall keel load-bearing area in this embodiment is: establish a spatial rectangular coordinate system of the top view of the light steel building, and use the normal vector of each wall keel load-bearing area as the direction of the wind vector of each wall keel load-bearing area, and use the wind pressure of each wall keel load-bearing area as the modulus of the wind vector of each wall keel load-bearing area.

[0039] Please continue reading Figure 1As shown, the system also includes a lateral deformation monitoring module, which is connected to the wind monitoring module. The lateral deformation monitoring module is used to analyze the lateral deformation state of the light steel building according to the wind pressure state analysis results of the light steel building during the monitoring period, the ground beam and column stress state analysis results and the structural deformation data, and the lateral deformation state refers to the structural abnormality caused by all lateral forces of the light steel building: when max{xb(i)}≥XB, the lateral deformation monitoring module determines that the lateral deformation state of the light steel building during the monitoring period is a lateral deformation abnormality; when max{xb(i)}<XB, if the overall wind pressure state of the light steel building is normal and the ground beam and column stress state is normal, the lateral deformation monitoring module determines that the lateral deformation state of the light steel building during the monitoring period is normal; if the overall wind pressure state of the light steel building is normal If the state is abnormal and the stress state of the ground beams and columns is normal, the lateral deformation monitoring module determines that the lateral deformation state of the light steel building during the monitoring period is abnormal keel bending; if the overall wind pressure state of the light steel building is normal and the stress state of the ground beams and columns is abnormal, the lateral deformation monitoring module determines that the lateral deformation state of the light steel building during the monitoring period is abnormal beam and column bearing; if the overall wind pressure state of the light steel building is abnormal and the stress state of the ground beams and columns is normal, the lateral deformation monitoring module determines that the lateral deformation state of the light steel building during the monitoring period is abnormal lateral deformation; by comprehensively analyzing the lateral deformation state in three dimensions based on the actual deformation amount, the overall wind pressure state and the stress state of the ground beams and columns, a complete analysis of the lateral deformation is achieved, wherein the actual deformation amount can only reflect the external deformation of the wall keel, and therefore cannot be used as a single analysis element; Among them, xb(i) represents the deformation of the i-th wall keel, and XB represents the keel deformation threshold.

[0040] Please continue reading Figure 1 As shown, the system also includes: A vertical load analysis module, the vertical load analysis module is connected to the environmental data acquisition module and the structural data acquisition module, and the vertical load analysis module is used to analyze the vertical load state of the light steel building during the monitoring period according to the environmental snow pressure data and the vertical load weight of the light steel building during the monitoring period: if xy+cz<ZF×n2 and xy<zF×N2, the vertical load analysis module determines that the vertical load state of the light steel building during the monitoring period is normal; if xy+cz<ZF×n2 and xy≥zF×N2, the vertical load analysis module determines that the vertical load state of the light steel building during the monitoring period is abnormal top pressure; if xy+cz≥ZF×n2, the vertical load analysis module determines that the vertical load state of the light steel building during the monitoring period is abnormal structural load; by comprehensively analyzing the load in the light steel building and the load of the top keel, the abnormal state in the vertical direction is completely analyzed, thereby realizing effective analysis of the vertical load state; Among them, xy represents the snow pressure weight of the light steel building during the monitoring period, cz represents the vertical load in the light steel building, ZF represents the single standard load weight of the ground beams and columns in the light steel building, N2 represents the number of top keels in the light steel building, and zF represents the standard load weight of a single top keel in the light steel building.

[0041] Please continue reading Figure 1 As shown, the system also includes a stability analysis module, which is used to analyze the stability of the light steel building within the monitoring period according to the lateral deformation state analysis results and the vertical load state analysis results of the light steel building within the monitoring period, and to alarm the user according to the stability analysis results of the light steel building.

[0042] See also Figure 4 As shown, the stability analysis module includes a stability analysis unit, which is used to analyze the stability state of the light steel building during the monitoring period according to the analysis results of the lateral deformation state and the vertical load state of the light steel building during the monitoring period. The stability state of the emotional building refers to the set of unstable conditions of the light steel building caused by the two dimensions of lateral and vertical loads: If the lateral deformation state of the light steel building is normal and the vertical load state is normal, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is stable; If the lateral deformation state of the light steel building is lateral deformation abnormality, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is primary structural abnormality; If the lateral deformation state of the light steel building is lateral deformation abnormality and the vertical load state is top pressure abnormality, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is level 3 top beam abnormality; If the lateral deformation state of the light steel building is abnormal keel bending or abnormal beam and column bearing and the vertical load state is normal, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is abnormal third-level side beam; If the vertical load state is abnormal keel bending or beam-column bearing and the vertical load state is abnormal top pressure or abnormal structural load, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is abnormal first-level ground beam; If the lateral deformation state of the light steel building is abnormal lateral deformation and the vertical load state is normal, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is a secondary ground beam abnormality; the stability analysis unit uses each level of stability state to refer to the severity level of the abnormality and the location where the abnormality occurs, thereby realizing accurate analysis of the stability state of the light steel building.

[0043] Please continue reading Figure 4As shown, the stability analysis module also includes an alarm unit, which is connected to the stability analysis unit, and the alarm unit is used to alarm the user according to the analysis results of the stable state of the light steel building within the monitoring period: if the stable state of the light steel building within the monitoring period is a primary structural abnormality or a primary ground beam abnormality, the alarm unit sends an emergency safety alarm to the user; if the stable state of the light steel building within the monitoring period is a secondary ground beam abnormality, the alarm unit sends a building renovation alarm to the user; if the stable state of the light steel building within the monitoring period is a third-level side beam abnormality or a third-level top beam abnormality, the alarm unit sends a local renovation alarm to the user; if the stable state of the light steel building within the monitoring period is stable, the alarm unit does not send an alarm signal to the user; the alarm unit integrates the analysis results of the stable state and alarms the user, thereby realizing efficient monitoring of the light steel structure.

[0044] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An intelligent monitoring system for light steel structures, characterized in that: include: Environmental data collection module, used to collect environmental data within the monitoring period; Structural data acquisition module, used to collect light steel structure parameters and structural deformation data within the monitoring period; The stress analysis module is used to analyze the overall wind pressure status of the light steel building based on the environmental data within the monitoring period; The lateral load analysis module is used to construct the wind vector according to the environmental wind pressure data within the monitoring period, and analyze the stress state of the ground beams and columns according to the wind vector and light steel structure parameters; The lateral deformation monitoring module is used to analyze the lateral deformation state of the light steel building according to the overall wind pressure state analysis results of the light steel building, the ground beam and column stress state analysis results and the structural deformation data during the monitoring period; The vertical load analysis module is used to analyze the vertical load status of the light steel building during the monitoring period according to the environmental snow pressure data and the vertical load weight of the light steel building during the monitoring period; The stability analysis module is used to analyze the stability of the light steel building during the monitoring period according to the analysis results of the lateral deformation state and the vertical load state of the light steel building during the monitoring period.

2. The intelligent monitoring system for light steel structure according to claim 1 is characterized in that: The force analysis module includes a local wind pressure analysis unit, which is used to analyze the wind pressure status of each wall keel load-bearing area during the monitoring period according to the environmental wind pressure data and the light steel structure parameters. The analysis results of the wind pressure status of each wall keel load-bearing area include normal and abnormal, and when the wind pressure status is abnormal, the wind pressure anomaly index fy(i) of the wall keel load-bearing area is constructed.

3. The intelligent monitoring system for light steel structure according to claim 2 is characterized in that: The force analysis module also includes an overall wind pressure analysis unit, which is used to calculate the lateral force anomaly index μ according to the wind pressure state analysis results of each wall keel bearing area during the monitoring period, and analyze the overall wind pressure state of the light steel building according to the lateral force anomaly index μ. The overall wind pressure state of the light steel building includes normal and abnormal.

4. The intelligent monitoring system for light steel structure according to claim 1 is characterized in that: The system also includes an environmental monitoring module, which is used to adjust the analysis process of the wind pressure state of each wall keel load-bearing area according to the environmental data within the monitoring period; The environmental monitoring module includes a temperature difference analysis unit, which is used to calculate the structural temperature difference c according to the indoor temperature and the outdoor temperature of the light steel building during the monitoring period, and analyze the temperature difference stress according to the calculation result of the structural temperature difference. The analysis results of the temperature difference stress include normal and abnormal, and when the temperature difference stress is abnormal, the standard bearing wind pressure of the keel is adjusted to FM'.

5. The intelligent monitoring system for light steel structure according to claim 4 is characterized in that: The environmental monitoring module also includes a vibration load analysis unit, which is used to analyze the vibration load state of the light steel building according to the vibration amplitude within the monitoring period. The vibration load state of the light steel building includes normal and abnormal. When the vibration load state is abnormal, the preset structural temperature difference constant is optimized to C'.

6. The intelligent monitoring system for light steel structure according to claim 5 is characterized in that: The lateral load analysis module is used to set the wind vector Ve(i) of each wall keel load-bearing area according to the environmental wind pressure data in the monitoring period, and calculate the light steel building bearing wind force α according to the wind vector of each wall keel load-bearing area; The lateral load analysis module analyzes the stress state of the ground beams and columns according to the wind force α of the light steel building and the lateral force HF of the ground beams and columns. The analysis results of the stress state of the ground beams and columns include normal and abnormal.

7. The intelligent monitoring system for light steel structure according to claim 6, characterized in that: The lateral deformation monitoring module is used to analyze the lateral deformation state of the light steel building according to the wind pressure state analysis results of the light steel building during the monitoring period, the ground beam and column stress state analysis results and the structural deformation data. The lateral deformation state analysis results of the light steel building include normal, abnormal keel bending, abnormal beam and column bearing and abnormal lateral deformation.

8. The intelligent monitoring system for light steel structure according to claim 7, characterized in that: The vertical load analysis module is used to analyze the vertical load status of the light steel building during the monitoring period according to the environmental snow pressure data and the vertical load weight of the light steel building during the monitoring period. The vertical load status analysis results of the light steel building include normal, abnormal top pressure and abnormal structural load.

9. The intelligent monitoring system for light steel structure according to claim 8, characterized in that: The stability analysis module includes a stability analysis unit, which is used to analyze the stability state of the light steel building within the monitoring period according to the lateral deformation state analysis results and the vertical load state analysis results of the light steel building within the monitoring period: If the lateral deformation state of the light steel building is normal and the vertical load state is normal, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is stable; If the lateral deformation state of the light steel building is lateral deformation abnormality, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is primary structural abnormality; If the lateral deformation state of the light steel building is lateral deformation abnormality and the vertical load state is top pressure abnormality, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is level 3 top beam abnormality; If the lateral deformation state of the light steel building is abnormal keel bending or abnormal beam and column bearing and the vertical load state is normal, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is abnormal third-level side beam; If the vertical load state is abnormal keel bending or beam-column bearing and the vertical load state is abnormal top pressure or abnormal structural load, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is abnormal first-level ground beam; If the lateral deformation state of the light steel building is lateral deformation abnormality and the vertical load state is normal, the stability analysis unit determines that the stability state of the light steel building during the monitoring period is secondary ground beam abnormality.

10. The intelligent monitoring system for light steel structure according to claim 9, characterized in that: The stability analysis module also includes an alarm unit, which is used to alarm the user according to the analysis results of the stability state of the light steel building during the monitoring period: if the stability state of the light steel building during the monitoring period is a primary structural abnormality or a primary ground beam abnormality, the alarm unit sends an emergency safety alarm to the user; if the stability state of the light steel building during the monitoring period is a secondary ground beam abnormality, the alarm unit sends a building renovation alarm to the user; if the stability state of the light steel building during the monitoring period is a third-level side beam abnormality or a third-level top beam abnormality, the alarm unit sends a local renovation alarm to the user; if the stability state of the light steel building during the monitoring period is stable, the alarm unit does not send an alarm signal to the user.

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