Health monitoring system and method for dome structure of bin body

Abstract

The invention discloses a health monitoring system and method for a cabin dome structure, and belongs to the field of building structure health monitoring analysis, and the health monitoring system comprises a deformation monitoring device which comprises a deformation monitoring module, a battery module and a wireless data module; the deformation monitoring module comprises N deformation monitoring sensors mounted on a deformation sensitive area; the monitoring center is provided with a data analysis module. The health monitoring method comprises the following steps: constructing a three-dimensional model, performing finite element analysis, and screening a deformation sensitive area; determining a deformation monitoring center of the deformation sensitive area on the silo dome structure according to the center position of the deformation sensitive area, and arranging a deformation monitoring sensor; and calculating the health coefficient of each deformation sensitive area by using the deformation data, and evaluating the health state of the dome structure of the bin body. According to the invention, the real-time deformation monitoring and health assessment of the deformation sensitive area at each position can be realized, the overall health assessment of the dome structure of the bin body is further realized, and the timely and accurate alarm is ensured.

Description

Technical Field

[0001] The present invention relates to the field of building structure health monitoring and analysis, and particularly to a health monitoring system and method for a silo dome structure. Background Art

[0002] Silo dome structures are widely used in many fields such as industrial storage and large-scale venues. They are long-term exposed to the natural environment and bear various complex loads such as self-weight, wind load, snow load, temperature change, and possible seismic actions. It is easy to produce structural damages such as cracks, deformations, and loosening of connectors, which will affect the safety and stability of the structure. Therefore, it is very crucial to conduct real-time health monitoring on key areas during operation. In the prior art, the division of some key areas often adopts empirical judgment, which will cause the real deformation-sensitive areas to be ignored, resulting in poor health monitoring effects. The silo dome structure is generally a hemispherical structure with a complex internal structure, leading to many monitoring blind spots and blind areas. The existing empirical means cannot meet the monitoring requirements under complex working conditions, and the ability to warn of potential diseases is insufficient. Summary of the Invention

[0003] Aiming at the above deficiencies of the prior art, the present invention provides a health monitoring system and method for a silo dome structure, and obtains the parallel sensitive areas of the silo dome structure based on finite element analysis to improve the accuracy of health monitoring.

[0004] To achieve the above invention purpose, the technical solution adopted by the present invention is as follows: Provide a health monitoring method for a silo dome structure, which includes: Step S1: Construct a three-dimensional model according to the shape and size parameters of the silo dome structure, conduct finite element analysis, apply loads to the three-dimensional model, and screen the deformation-sensitive areas based on the relative positions of the stress units on the three-dimensional model in the three-dimensional coordinate system and the deformation amounts under the applied load conditions; Step S2: Determine the deformation monitoring center of the deformation-sensitive area on the silo dome structure according to the central position of the deformation-sensitive area, arrange deformation monitoring sensors on the deformation-sensitive area, and collect the deformation data monitored by each deformation monitoring sensor on the deformation-sensitive area; Step S3: Calculate the health coefficient of each deformation-sensitive area by using the deformation data, and calculate the overall health coefficient of the silo dome structure based on the health coefficient of each deformation-sensitive area to evaluate the health status of the silo dome structure.

[0005] Further, step S1 includes: Step S11: Construct a three-dimensional model according to the shape and size parameters of the silo dome structure, import the three-dimensional model into finite element analysis software, and construct a three-dimensional coordinate system on the three-dimensional model; Step S12: Apply a load to the 3D model using finite element analysis software, divide the 3D model into several stress-bearing units, and obtain the internal pressure borne by each stress-bearing unit and the external pressure , and calculate the radial stress borne by the stress-bearing unit ; ; Among them, is the inner radius of the dome structure of the silo body, is the outer radius of the dome structure of the silo body, r is the distance from the center of the stress-bearing unit to the center of the sphere where the dome structure of the silo body is located; Step S13: Calculate the radial deformation of the stress-bearing unit according to the radial stress ; When there is a dome support frame at the position where the stress-bearing unit is located, the radial deformation of the stress-bearing unit is: ; ; When there is no support frame at the position where the stress-bearing unit is located, the radial deformation of the stress-bearing unit is: ; Among them, E 1 is the elastic modulus of the dome panel at the position where the stress-bearing unit is located, E 2 is the elastic modulus of the dome support frame at the position where the stress-bearing unit is located, h 1 is the thickness of the dome panel at the position where the stress-bearing unit is located, h 2 is the thickness of the dome support frame at the position where the stress-bearing unit is located, is the Poisson's ratio; Step S14: Determine the deformation-sensitive area on the dome structure of the silo body based on the radial deformation of each stress-bearing unit and the coordinates of the center of the stress-bearing unit in the 3D coordinate system

[0006] Furthermore, Step S14 includes: Step S141: Compare the radial deformation of the stress-bearing unit with the radial deformation threshold ; If , it is determined that the stress-bearing unit is excessively deformed under the applied load and is used as a deformation-sensitive unit; if , it is determined that the stress-bearing unit is normally deformed under the applied load; Step S142: Screen out all the deformation-sensitive units in the 3D model and construct a set of deformation-sensitive units , n is the number of deformation-sensitive units, is the n th deformation-sensitive unit, and extract the coordinates of the center of the deformation-sensitive unit in the three-dimensional coordinate system; Step S143: Based on any deformation-sensitive unit , traverse the remaining deformation-sensitive units in the set of deformation-sensitive units , and calculate the distance between the deformation-sensitive unit and the remaining deformation-sensitive units , ; is the coordinate of the center of the deformation-sensitive unit , is the coordinate of the center of the deformation-sensitive unit , i , j are the numbers of the two deformation-sensitive units respectively; Step S144: Set the standard value of the distance between the centers of two adjacent force-bearing units ; If , it is determined that the deformation-sensitive unit is adjacent to the deformation-sensitive unit , extract the deformation-sensitive unit and the deformation-sensitive unit from the set of deformation-sensitive units , construct the set of deformation-sensitive units , and the remaining deformation-sensitive units in the set of deformation-sensitive units form the set of deformation-sensitive units , and execute Step S145 - Step S146; If , it is determined that the deformation-sensitive unit is not adjacent to the deformation-sensitive unit , retain the deformation-sensitive unit and the deformation-sensitive unit in the set of deformation-sensitive units , and execute Step S148; Step S145: Return to Step S143, and based on each deformation-sensitive unit in the set of deformation-sensitive units , extract the deformation-sensitive units adjacent to each deformation-sensitive unit in the set of deformation-sensitive units from the set of deformation-sensitive units ; Step S146: Repeat Step S145 until the number of deformation-sensitive units in the set of deformation-sensitive units no longer increases, output the complete subset of deformation-sensitive units, and execute Step S147; Step S147: Return to step S143, and continue to execute steps S143 - S146 with one of the remaining deformation - sensitive units in the set of deformation - sensitive units as the basis; Step S148: Return to step S143, re - select a deformation - sensitive unit from the set of deformation - sensitive units and number the re - selected deformation - sensitive unit u as ; then, execute steps S143 - S146 with the deformation - sensitive unit as the basis; Step S149: Until all subsets of deformation - sensitive units are extracted from the set of deformation - sensitive units

[0007] Further, step S2 includes:Step S21: Calculate the central coordinate of the deformation - sensitive area according to the central coordinates of the deformation - sensitive units in the deformation - sensitive area ; ; wherein, is the coordinate of the deformation - sensitive unit in the deformation - sensitive area, W is the number of deformation - sensitive units in the deformation - sensitive area, w is the number of the deformation - sensitive unit in the deformation - sensitive area; Step S22: Use the point position on the dome structure of the bin corresponding to the central coordinate of the deformation - sensitive area as the deformation monitoring center of the deformation - sensitive area; and calculate the area s of the deformation - sensitive area by using the area of the deformation - sensitive unit; Step S23: Based on the effective monitoring area T of the deformation monitoring sensor, calculate the number N of deformation monitoring sensors to be set in the deformation - sensitive area ; Step S24: Uniformly arrange N deformation monitoring sensors around each deformation monitoring center on the dome structure of the bin, actually collect the deformation data of each deformation monitoring sensor, and send it to the monitoring center through the wireless data module.

[0008] Further, step S3 includes: Step S31: The monitoring center obtains the deformation data of each deformation monitoring sensor collected during the time period T to construct a deformation monitoring data set ;t is the number of times of deformed data acquisition, is the N th deformed data collected by the t th deformed monitoring sensor; Step S32: Screen the maximum value of the deformed data collected by each deformed monitoring sensor , and calculate the health coefficient of the deformation sensitive area; ; Among them, e is the number of the deformation sensitive area on the dome structure of the silo body, f is the number of the deformed monitoring sensor, b 0 is the deformation threshold when the dome structure of the silo body is in use, K e is the health coefficient of the e th deformation sensitive area on the dome structure of the silo body; Step S33: Calculate the overall health coefficient of the dome structure of the silo body according to the health coefficient of each deformation sensitive area on the dome structure of the silo body ; ; Among them, k 0 is the health coefficient threshold of the deformation sensitive area, g is the number of deformation sensitive areas whose health coefficient exceeds the health coefficient threshold, E is the total number of deformation sensitive areas on the dome structure of the silo body; Step S34: Compare the health coefficient with the set health coefficient threshold ; If , it is determined that the health state of the dome structure of the silo body is poor, and the system issues an alarm signal; if , it is determined that the health state of the dome structure of the silo body is good.

[0009] Provide a health monitoring system for the dome structure of the silo body, which executes the above-mentioned health monitoring method for the dome structure of the silo body, and includes: A deformation monitoring device, including a deformation monitoring module, a battery module and a wireless data module; The deformation monitoring module includes N deformed monitoring sensors installed on the deformation sensitive area, the battery module powers the deformation monitoring device, and the wireless data module sends the deformed data of the dome structure of the silo body collected by the deformed monitoring sensors to the monitoring center; The monitoring center is equipped with a data analysis module, which is used to analyze the collected deformed data, judge the health state of the dome structure of the silo body, and generate corresponding alarm signals.

[0010] The beneficial effects of the present invention are as follows: Based on the finite element analysis of the three-dimensional model of the silo dome structure constructed, the deformation-sensitive areas are screened based on the theoretical deformation conditions of each stress-bearing unit. The deformation-sensitive areas are composed of a combination of continuous deformation-sensitive units. The deformation-sensitive areas are used as accurate health monitoring areas, which is convenient for accurately installing deformation monitoring devices. Through the accurate positioning of the deformation-sensitive areas and the reasonable layout of the deformation monitoring devices, the health monitoring effect of each part of the silo dome structure is effectively improved, avoiding the occurrence of health monitoring dead corners, and realizing the real-time deformation monitoring and health assessment of the deformation-sensitive areas at each position. Furthermore, the health assessment of the overall silo dome structure is realized, ensuring timely and accurate alarms. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a flowchart of the health monitoring method for the silo dome structure. DETAILED DESCRIPTION OF THE INVENTION

[0012] The following describes the specific embodiments of the present invention to facilitate those skilled in the art of the present technology to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art of the present technology, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are within the scope of protection.

[0013] As Figure 1 shown, a health monitoring method for a silo dome structure includes: Step S1: Construct a three-dimensional model according to the shape and size parameters of the silo dome structure, and perform finite element analysis. Apply loads to the three-dimensional model. Through the stress loading function of the finite element analysis software, apply multi-directional loads to the three-dimensional model to simulate the real load conditions of the silo dome structure, and screen the deformation-sensitive areas based on the relative positions of the stress-bearing units on the three-dimensional model in the three-dimensional coordinate system and the deformation amounts under the applied load conditions.

[0014] Step S11: Construct a three-dimensional model according to the shape and size parameters of the silo dome structure, import the three-dimensional model into the finite element analysis software, and construct a three-dimensional coordinate system on the three-dimensional model; in this embodiment, the inner radius of the silo dome structure is selected as 10 m, the outer radius is 10.2 m, and the wall thickness is 0.2 m.

[0015] Step S12: Use the finite element analysis software to apply loads to the three-dimensional model, divide the three-dimensional model into several stress-bearing units, and divide the three-dimensional model of the spherical structure into several stress-bearing units by using the mesh division method. In this embodiment, the three-dimensional model is divided into 1000 mesh units, and one stress-bearing unit corresponds to one mesh, and the internal pressure and external pressure borne by each stress-bearing unit are obtained. and external pressure , and calculate the radial stress borne by the force-bearing unit ; ; Among them, is the inner radius of the dome structure of the silo body, is the outer radius of the dome structure of the silo body, r is the distance from the center of the force-bearing unit to the center of the sphere where the dome structure of the silo body is located.

[0016] In this embodiment, the internal pressure = 10 kPa, and the external pressure = -5 kPa (mainly from the negative pressure of the wind load). Since the dome structure of the silo body is equivalent to a regular sphere, the distance from the center of each force-bearing unit to the center of the sphere where the dome structure of the silo body is located is 10.1 m; using the above data, this embodiment can calculate the radial stress .

[0017] Step S13: Calculate the radial deformation amount of the force-bearing unit according to the radial stress ; When there is a dome support frame at the position where the force-bearing unit is located, the radial deformation amount of the force-bearing unit is that the dome support frame, as the skeleton of the dome structure of the silo body, will increase the strength of the force-bearing unit at the location, and the radial deformation amount becomes smaller: ; When there is no support frame at the position where the force-bearing unit is located, the radial deformation amount of the force-bearing unit is: ; Among them, E 1 is the elastic modulus of the dome panel at the position where the force-bearing unit is located, E 2 is the elastic modulus of the dome support frame at the position where the force-bearing unit is located, h 1 is the thickness of the dome panel at the position where the force-bearing unit is located, h 2 is the thickness of the dome support frame at the position where the force-bearing unit is located, is the Poisson's ratio; The radial deformation amount is the deformation amount of the dome structure of the silo body along the spherical radius, and this kind of deformation amount causes the greatest damage to the dome structure of the silo body.

[0018] Step S14: Based on the radial deformation amount of each force-bearing unit and the coordinates of the center of the force-bearing unit in the three-dimensional coordinate system, determine the deformation-sensitive area on the dome structure of the silo body. Step S14 specifically includes the following steps: Step S141: Compare the radial deformation amount of the force-bearing unit with the radial deformation amount threshold Compare; if , it is determined that the force-bearing unit is excessively deformed under the applied load condition and is used as a deformation-sensitive unit; if , it is determined that the force-bearing unit is normally deformed under the applied load condition; Radial deformation threshold is the maximum allowable radial deformation of the surface of the silo dome structure during design. Exceeding the radial deformation threshold , the health of the silo dome structure is likely to be damaged.

[0019] Step S142: Screen out all deformation-sensitive units in the 3D model and construct a set of deformation-sensitive units , n is the number of deformation-sensitive units, is the n th deformation-sensitive unit, and extract the coordinates of the center of the deformation-sensitive unit in the 3D coordinate system; Step S143: Based on any deformation-sensitive unit , traverse the remaining deformation-sensitive units in the set of deformation-sensitive units , and calculate the distance between the deformation-sensitive unit and the remaining deformation-sensitive units , ; is the coordinate of the center of the deformation-sensitive unit , is the coordinate of the center of the deformation-sensitive unit , i , j are the numbers of the two deformation-sensitive units respectively; Step S144: Set the standard value of the distance between the centers of two adjacent force-bearing units ; If , it is determined that the deformation-sensitive unit is adjacent to the deformation-sensitive unit , extract the deformation-sensitive unit and the deformation-sensitive unit from the set of deformation-sensitive units , construct a set of deformation-sensitive units , and the remaining deformation-sensitive units in the set of deformation-sensitive units form a set of deformation-sensitive units , and execute Step S145 - Step S146; If , it is determined that the deformation-sensitive unit is not adjacent to the deformation-sensitive unit , and the deformation-sensitive unit and deformation-sensitive units remain in the set of deformation-sensitive units and perform step S148; Step S145: Return to step S143, and based on each deformation-sensitive unit in the set of deformation-sensitive units extract the deformation-sensitive units adjacent to each deformation-sensitive unit in the set of deformation-sensitive units from the set of deformation-sensitive units ; Step S146: Repeat step S145 until the number of deformation-sensitive units in the set of deformation-sensitive units no longer increases, output the complete subset of deformation-sensitive units, and perform step S147; Step S147: Return to step S143, and continue to perform steps S143 - S146 using one of the remaining deformation-sensitive units in the set of deformation-sensitive units as the basis; Step S148: Return to step S143, reselect a deformation-sensitive unit from within the set of deformation-sensitive units , u number it as the reselected deformation-sensitive unit, and based on the deformation-sensitive unit perform steps S143 - S146; Step S149: Until all subsets of deformation-sensitive units are extracted from the set of deformation-sensitive units enclose the area surrounded by the deformation-sensitive units in a subset of deformation-sensitive units as a deformation-sensitive area.

[0020] Step S2: Determine the deformation monitoring center of the deformation-sensitive area on the silo dome structure according to the center position of the deformation-sensitive area, and arrange deformation monitoring sensors on the deformation-sensitive area to collect the deformation data monitored by each deformation monitoring sensor on the deformation-sensitive area. Step S2 specifically includes: Step S21: Calculate the center coordinates of the deformation-sensitive area according to the center coordinates of the deformation-sensitive units within the deformation-sensitive area ; ; wherein, is the coordinate of the deformation-sensitive unit within the deformation-sensitive area, W is the number of deformation-sensitive units within the deformation-sensitive area, w is the number of the deformation-sensitive unit within the deformation-sensitive area; Step S22: According to the center coordinates of the deformation-sensitive area The points on the corresponding silo dome structure are used as the deformation monitoring center of the deformation-sensitive area; and the area of the deformation-sensitive unit is used s to calculate the area of the deformation-sensitive area ; Since the deformation-sensitive area is an arc surface, the center of the deformation-sensitive area will be in the inner space of the arc surface. When taking the deformation monitoring center of the deformation-sensitive area in this embodiment, the vertical point of the center of the deformation-sensitive area perpendicular to the inner surface of the deformation-sensitive area is taken.

[0021] Step S23: Based on the effective monitoring area of the deformation monitoring sensor T calculate the number of deformation monitoring sensors to be set in the deformation-sensitive area N , ; Step S24: Uniformly arrange N deformation monitoring sensors around each deformation monitoring center on the silo dome structure, actually collect the deformation data of each deformation monitoring sensor, and send it to the monitoring center through the wireless data module.

[0022] Step S3: Calculate the health coefficient of each deformation-sensitive area using the deformation data, and calculate the overall health coefficient of the silo dome structure based on the health coefficient of each deformation-sensitive area to evaluate the health status of the silo dome structure. Step S3 specifically includes: Step S31: The monitoring center obtains the deformation data of each deformation monitoring sensor collected during the time period T to construct a deformation monitoring data set , t is the number of times of deformation data collection, is the N th deformation data collected by the t th deformation monitoring sensor; Step S32: Screen the maximum value of the deformation data collected by each deformation monitoring sensor, and calculate the health coefficient of the deformation-sensitive area; ; Among them, e is the number of the deformation-sensitive area on the silo dome structure, f is the number of the deformation monitoring sensor, b 0 is the deformation threshold when the silo dome structure is in use, K e is the health coefficient of the e th deformation-sensitive area on the silo dome structure; the deformation-sensitive area b 0 is the maximum allowable deformation data value on the silo dome structure during use.

[0023] Step S33: Calculate the overall health coefficient of the silo dome structure based on the health coefficients of each deformation-sensitive area on the silo dome structure ; ; Among them, k 0 is the health coefficient threshold of the deformation-sensitive area, g is the number of deformation-sensitive areas whose health coefficients exceed the health coefficient threshold, E is the total number of deformation-sensitive areas on the silo dome structure; the health coefficient threshold k 0 is the maximum allowable health coefficient of the deformation-sensitive area. The larger the health coefficient, the poorer the health of the deformation-sensitive area.

[0024] Step S34: Compare the health coefficient with the set health coefficient threshold . The larger the health coefficient , the poorer the health state of the silo dome structure; if , it is determined that the health state of the silo dome structure is poor, and the system issues an alarm signal; if , it is determined that the health state of the silo dome structure is good.

[0025] A health monitoring system for a silo dome structure, which executes the above-mentioned health monitoring method for the silo dome structure, includes: A deformation monitoring device, including a deformation monitoring module, a battery module, and a wireless data module; The deformation monitoring module includes N deformation monitoring sensors installed on the deformation-sensitive areas. In this embodiment, the deformation monitoring sensors can use resistance strain gauges and are connected to the data collector in the deformation monitoring device. The battery module powers the deformation monitoring device, and the wireless data module sends the deformation data of the silo dome structure collected by the deformation monitoring sensors to the monitoring center; The monitoring center is equipped with a data analysis module for analyzing the collected deformation data, judging the health state of the silo dome structure, and generating corresponding alarm signals.

[0026] The present invention conducts finite element analysis based on the constructed three-dimensional model of the silo dome structure, screens the deformation-sensitive areas based on the theoretical deformation conditions of each stress-bearing unit. The deformation-sensitive areas are composed of continuous deformation-sensitive units. The deformation-sensitive areas are used as accurate health monitoring areas, which is convenient for accurately installing the deformation monitoring device. Through the accurate positioning of the deformation-sensitive areas and the reasonable layout of the deformation monitoring device, the health monitoring effect of each part of the silo dome structure is effectively improved, avoiding the occurrence of health monitoring dead corners, and realizing the real-time deformation monitoring and health assessment of the deformation-sensitive areas at each position, and then realizing the overall health assessment of the silo dome structure, ensuring timely and accurate alarms.

Claims

1. A health monitoring method for a warehouse dome structure, characterized in that: include: Step S1: construct a three-dimensional model according to the shape and size parameters of the warehouse dome structure, perform finite element analysis, apply load to the three-dimensional model, and screen deformation-sensitive areas based on the relative positions of the force-bearing units on the three-dimensional model in the three-dimensional coordinate system and the deformation amounts under the applied load conditions; Step S2: determining the deformation monitoring center of the deformation sensitive area on the warehouse dome structure according to the center position of the deformation sensitive area, arranging deformation monitoring sensors on the deformation sensitive area, and collecting deformation data monitored by each deformation monitoring sensor on the deformation sensitive area; Step S3: Calculate the health factor of each deformation sensitive area using the deformation data, and calculate the overall health factor of the warehouse dome structure based on the health factor of each deformation sensitive area to evaluate the health status of the warehouse dome structure.

2. The health monitoring method of the warehouse dome structure according to claim 1, characterized in that: The step S1 comprises: Step S11: construct a three-dimensional model according to the shape and size parameters of the warehouse dome structure, import the three-dimensional model into finite element analysis software, and construct a three-dimensional coordinate system on the three-dimensional model; Step S12: Use finite element analysis software to apply load to the three-dimensional model, divide the three-dimensional model into several force-bearing units, and obtain the internal pressure of each force-bearing unit. and external pressure , and calculate the radial stress on the load-bearing unit ; ； in, is the inner radius of the warehouse dome structure, is the outer radius of the warehouse dome structure, r The distance between the center of the force-bearing unit and the center of the sphere where the dome structure of the warehouse is located; Step S13: According to radial stress Calculate the radial deformation of the load element ; When there is a dome support frame at the location of the load-bearing unit, the radial deformation of the load-bearing unit for: ； When there is no supporting frame at the location of the force-bearing unit, the radial deformation of the force-bearing unit is for: ； in, E 1 is the elastic modulus of the dome panel at the location of the force unit, E 2 is the elastic modulus of the dome support frame at the location of the load-bearing unit, h 1 is the thickness of the dome panel at the location of the force unit, h 2 is the thickness of the dome support frame at the location of the load-bearing unit, is Poisson’s ratio; Step S14: Based on the radial deformation of each force-bearing unit and the coordinates of the center of the force-bearing unit in the three-dimensional coordinate system, the deformation sensitive area on the warehouse dome structure is determined.

3. The health monitoring method of the warehouse dome structure according to claim 2, characterized in that: The step S14 comprises: Step S141: The radial deformation of the force-bearing unit Radial deformation threshold For comparison; if , then the force-bearing unit is judged to be excessively deformed under the load condition and is regarded as a deformation-sensitive unit; if , it is determined that the deformation of the force-bearing unit is normal under the load condition; Step S142: Filter out all deformation sensitive units in the 3D model and construct a deformation sensitive unit set , n is the number of deformation sensitive units, For the n deformation sensitive units, and extract the coordinates of the center of the deformation sensitive unit in the three-dimensional coordinate system; Step S143: Using any deformation sensitive unit Based on, traverse the set of deformation sensitive units The remaining deformation sensitive units in the calculation of deformation sensitive units With other deformation sensitive units The distance between , ; Deformation sensitive unit The coordinates of the center, Deformation sensitive unit The coordinates of the center, i , j are the numbers of the two deformation sensitive units respectively; Step S144: Setting the standard value of the distance between the centers of two adjacent force-bearing units ; like , then the deformation sensitive unit is determined Deformation sensitive unit Adjacent, deformation sensitive unit and deformation sensitive unit From the deformation sensitive unit set Extract from the image to construct a set of deformation-sensitive units , a set of deformation-sensitive units The remaining deformation-sensitive units in form a deformation-sensitive unit set , execute step S145-step S146; like , then the deformation sensitive unit is determined Deformation sensitive unit Not adjacent, will deform the sensitive unit and deformation sensitive unit Retained in the deformation sensitive unit set In, execute step S148; Step S145: Return to step S143 to transform the sensitive unit set Based on each deformation sensitive unit in the Extract and set deformation sensitive units The deformation sensitive units adjacent to each deformation sensitive unit in; Step S146: Repeat step S145 until the deformation sensitive unit set The number of deformation sensitive units in the output is no longer increasing, a complete deformation sensitive unit subset is output, and step S147 is executed; Step S147: Return to step S143 and use the deformation sensitive unit set Based on one of the remaining deformation sensitive units, continue to execute steps S143 to S146; Step S148: Return to step S143, and select the deformation sensitive unit set Reselect a deformation sensitive unit , u The number of the reselected deformation sensitive unit is the deformation sensitive unit. Based on, execute step S143 to step S146; Step S149: until the deformation sensitive unit set After all deformation sensitive unit subsets are extracted, an area enclosed by deformation sensitive units in a deformation sensitive unit subset is taken as a deformation sensitive area.

4. The health monitoring method of the warehouse dome structure according to claim 3, characterized in that: The step S2 comprises: Step S21: Calculate the center coordinates of the deformation sensitive area according to the center coordinates of the deformation sensitive units in the deformation sensitive area ; ； in, is the coordinate of the deformation sensitive unit in the deformation sensitive area, W is the number of deformation sensitive units in the deformation sensitive area, w is the number of the deformation sensitive unit in the deformation sensitive area; Step S22: Based on the center coordinates of the deformation sensitive area The corresponding point on the warehouse dome structure is used as the deformation monitoring center of the deformation sensitive area; and the area of ​​the deformation sensitive unit is used s Calculate the area of ​​deformation sensitive area ; Step S23: Based on the effective monitoring area of ​​the deformation monitoring sensor T , the number of deformation monitoring sensors required to calculate the deformation sensitive area N , ; Step S24: evenly arrange the deformation monitoring centers around each deformation monitoring center on the warehouse dome structure. N A deformation monitoring sensor is used to actually collect the deformation data of each deformation monitoring sensor and send it to the monitoring center through a wireless data module.

5. The health monitoring method of the warehouse dome structure according to claim 4, characterized in that: The step S3 comprises: Step S31: The monitoring center obtains the time period T The deformation data of each deformation monitoring sensor is collected to build a deformation monitoring data set , t is the number of deformation data collection, For the N The deformation monitoring sensor collects t Deformation data; Step S32: Filter the maximum value of deformation data collected by each deformation monitoring sensor , calculate the health factor of the deformation sensitive area; ； in, e is the number of the deformation sensitive area on the warehouse dome structure, f is the number of the deformation monitoring sensor, b 0 is the deformation threshold when the warehouse dome structure is in use, K e The first e Health factor of each deformation-sensitive area; Step S33: Calculate the overall health factor of the warehouse dome structure based on the health factor of each deformation sensitive area on the warehouse dome structure ; ； in, k 0 is the health coefficient threshold of the deformation sensitive area, g is the number of deformation sensitive areas whose health coefficient exceeds the health coefficient threshold, E is the total amount of deformation sensitive area on the warehouse dome structure; Step S34: The health coefficient The health factor threshold is set For comparison; if , then the health status of the warehouse dome structure is judged to be poor, and the system sends out an alarm signal; if , it is judged that the health status of the warehouse dome structure is good.

6. A health monitoring system for a warehouse dome structure, implementing the health monitoring method for a warehouse dome structure according to any one of claims 1 to 5, characterized in that: include: A deformation monitoring device, comprising a deformation monitoring module, a battery module and a wireless data module; The deformation monitoring module includes a deformation sensitive area mounted on N a deformation monitoring sensor, the battery module supplies power to the deformation monitoring device, and the wireless data module sends the deformation data of the warehouse dome structure collected by the deformation monitoring sensor to the monitoring center; The monitoring center is equipped with a data analysis module for analyzing the collected deformation data, determining the health status of the warehouse dome structure, and generating corresponding alarm signals.

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