Hanging basket safety real-time monitoring system and method for bridge construction

Abstract

The invention discloses a hanging basket safety real-time monitoring system and method for bridge construction, and belongs to the technical field of monitoring and early warning, and the system comprises an initial data obtaining module which is used for obtaining initial level data when a preset hanging basket is put into use, and dividing the initial level data into at least five pieces of monitoring data, the five pieces of monitoring data at least comprise vertical data of the four ends of the preset hanging basket at the downward position and the nearest horizontal end face; the data acquisition module is used for performing data acquisition by adopting a sensor measurement method, and the sensor measurement method comprises a tilt angle sensor; the data acquisition module is used for acquiring vertical data change in a preset hanging basket using process based on the vertical data; through multi-dimensional data fusion, real-time monitoring and early warning and comprehensive and targeted monitoring layout, the safety and efficiency of hanging basket construction are remarkably improved, and the quality of bridge construction and the safety of constructors are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of monitoring and early warning, and in particular to a real-time safety monitoring system and method for a hanging basket used in bridge construction. Background Art

[0002] Bridge construction is an important part of road traffic construction, and the hanging basket is one of the key equipment for bridge construction. Its status directly affects the safety of construction and the stability of the structure. Bridge construction is gradually cast using hanging basket equipment. The construction quality must be guaranteed for each section of casting, otherwise the errors will gradually accumulate, and deviations will occur when the final closure is completed, which will seriously affect the quality of the bridge, especially for long-distance bridges.

[0003] Basket monitoring mainly monitors the status of the basket in real time to promptly discover and warn of potential safety risks. Specific monitoring targets include monitoring the basket's tilt, load, vibration, fixation and environmental conditions. Among them, the tilt condition is to monitor whether the basket is tilted, as well as the angle and direction of the tilt. When monitoring the basket's tilt, the tilt sensor will be used to measure the angle between the basket and the vertical direction to determine the degree and direction of the tilt.

[0004] In the related technology, the technical document with the technical application number CN201910608436.1 provides an online monitoring system and control method for the construction of a bridge hanging basket. The technical solution includes a network camera, a switch, a router, a local handheld terminal and a remote parameter and video control center; the network camera is provided with at least one on each side of the hanging basket device and connected to the switch, the switch is connected to the router, the local handheld terminal is connected to the local area network formed by the router, and the remote parameter and video control center is connected to the router in the wide area network. The technical solution can monitor the process of bridge construction in real time, monitor the travel distance and the amount of smoke generated by positioning and pouring concrete in real time through the network camera, and achieve the purpose of controlling pouring through on-site or remote analysis and feedback, thereby ensuring the quality of bridge pouring.

[0005] However, there are still some shortcomings in the current monitoring of the tilt of the hanging basket, including insufficient fusion of monitoring data, which leads to a lack of effective correlation analysis between the data of the tilt sensor and the data of the stress sensor, making it difficult to comprehensively judge whether the reason for the tilt of the hanging basket is due to changes in the stress of its own structure or other reasons, thereby affecting the comprehensive and accurate assessment of the tilt state of the hanging basket. When the tilt of the hanging basket exceeds a certain threshold, the early warning signal cannot be issued in a timely and accurate manner, or the early warning information is not clear enough, which cannot provide construction personnel with sufficient reaction time to take effective countermeasures, increasing the construction safety risk. Summary of the invention

[0006] In view of the above problems existing in the existing monitoring and early warning technology field, the present invention is proposed.

[0007] Therefore, one of the objects of the present invention is to provide a real-time monitoring system and method for the safety of a hanging basket for bridge construction, which can more comprehensively and accurately evaluate the safety status of the hanging basket through multi-dimensional data fusion, real-time monitoring and early warning, and comprehensive and targeted monitoring layout, avoid misjudgment or omission of single data monitoring, significantly improve the safety and efficiency of hanging basket construction, and ensure the quality of bridge construction and the safety of construction personnel.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0009] In one aspect, the present invention provides a real-time monitoring system for the safety of a hanging basket for bridge construction, comprising:

[0010] An initial data acquisition module, used to acquire initial horizontal data when the preset hanging basket is put into use, and divide the initial horizontal data into at least 5 monitoring data, wherein the 5 monitoring data at least include vertical data of the four ends of the preset hanging basket in a downward position and a horizontal end face closest to the four ends;

[0011] A data acquisition module, wherein the data acquisition module includes a sensor measurement method for data acquisition, wherein the sensor measurement method includes an inclination sensor; the data acquisition module is based on the vertical data and is used to collect changes in the vertical data during the use of the preset hanging basket; the data acquisition method includes collecting data 2 to 3 times per minute and generating a database;

[0012] A fusion analysis unit; the fusion analysis unit responds to the database and is used to perform differential analysis on the vertical data in the database; the fusion analysis unit includes a stress acquisition module, a stress interval division module, a calculation module and a determination module;

[0013] The stress acquisition module responds to the data acquisition module, and is used to synchronously acquire the stress value of the preset hanging basket when acquiring the vertical data change, and analyze and compare the stress value with the acquired vertical data to obtain the correlation law between the vertical data change and the stress value;

[0014] The stress interval division module is based on the association rule, and is used to intercept and divide relevant stress values ​​in the association rule; the relevant stress values ​​include at least 3 stress values ​​that cause the preset hanging basket to develop towards an inclination angle of 1°; wherein the 3 stress values ​​are sorted in order from small to large, and among the sorted stress values, the largest stress value is marked as a risk value; this risk value is a risk value when the preset hanging basket angle is tilted by 1°;

[0015] The calculation module is based on the risk value and is used to calculate the stress value that will cause the preset hanging basket angle to tilt by 2°; and preset a safety threshold value based on the stress value;

[0016] The determination module is based on the safety threshold, and when the tilt angle of the preset hanging basket exceeds the safety threshold, the system determines that the structural safety of the preset hanging basket is in a risky state; otherwise, no determination is made;

[0017] A data monitoring unit, the data monitoring unit is based on the risk value and is used to monitor the change of the risk value toward the safety threshold when the inclination angle of the preset hanging basket reaches the risk value; the data monitoring unit includes a time analysis module and an early warning module;

[0018] The time analysis module is used to analyze the increase and / or decrease of the preset hanging basket stress value with one second as a time period, and record the stress values ​​of 5 to 10 consecutive time periods;

[0019] The warning module responds to the time analysis module and is used to issue a safety warning when the stress value shows an increasing trend for 5 to 10 consecutive time periods; otherwise, no safety warning is issued;

[0020] The monitoring terminal is used to record the communication base station matched with the preset hanging basket, and receive the field data uploaded by the collection monitoring point corresponding to the preset hanging basket. When the safety warning is issued to the preset hanging basket, a request for obtaining information on the warning status of the preset hanging basket is initiated to the communication base station.

[0021] As a preferred solution of the present invention, when the safety warning is issued, the stress value corresponding to the safety warning is recorded, the stress value is marked as a reference value, and the median value between the risk value and the safety threshold is obtained; when the reference value does not exceed the median value, the system determines that the stress change of the preset hanging basket is in a stable state, and correspondingly determines that the inclination change of the preset hanging basket is at a stable level; otherwise, no determination is made.

[0022] As a preferred solution of the present invention, when it is determined that the stress change of the preset hanging basket is in a non-steady state, the difference between the median value and the safety threshold is obtained, the difference is marked as a critical value, and the stress value difference generated in adjacent time periods is calculated based on the change trend of the stress value in 5 to 10 consecutive time periods, the time required to reach the critical value is calculated based on the difference, and a safety warning is issued before the time arrives. At the same time, the system determines that the non-steady state of the preset hanging basket is in a continuously deteriorating state.

[0023] As a preferred solution of the present invention, when it is determined that the non-stationary state of the preset hanging basket is in a continuously deteriorating state, the stress value of the end opposite to the end where the stress change of the preset hanging basket is continuously deteriorating is collected by a method including diagonal analysis, and the collection frequency of the stress value of the opposite end is given to twice per second, and the change characteristics of the stress value are analyzed at the same time; and based on the change characteristics, the stress value of the continuously deteriorating end is collected at the given collection frequency at the same time, and the change trends of the two stress values ​​are calculated, and the calculation is obtained according to the following formula:

[0024] Among them, h j represents the hth stress value collected at the continuously deteriorating end in the jth second;

[0025] Wherein, sj represents the sth stress value collected at the opposite end in the jth second; w represents the difference between the two stress values ​​obtained in the jth second;

[0026] When the difference is decreasing, the system determines that the stress of the preset hanging basket at the two ends is tending to be balanced, and correspondingly determines that the inclination angle of the preset hanging basket is decreasing; otherwise, no determination is made.

[0027] As a preferred solution of the present invention, in which: in the initial data acquisition module, the 5 monitoring data also include monitoring data from the preset center of the hanging basket to the four ends of the preset hanging basket, and the monitoring data are data of preset monitoring points from the center of the preset hanging basket to the four ends of the preset hanging basket, and the 4 preset monitoring points are monitoring points at a distance of 0.3 to 0.5 meters from the center of the preset hanging basket, and stress changes from the center to the 4 preset monitoring points are collected.

[0028] As a preferred solution of the present invention, the stress changes from the center to the four preset monitoring points are collected in a manner that includes collecting the stress values ​​of the four preset monitoring points simultaneously every second. If the stress value of one of the preset monitoring points is greater than the stress values ​​of the other preset monitoring points, the system will mark the end corresponding to the stress value as the primary monitoring end.

[0029] As a preferred solution of the present invention, in addition to the primary monitoring end, the stress values ​​of other preset monitoring points are verified, and the verification method includes collecting the stress value changes of each preset monitoring point for 20 consecutive seconds. If the difference range of the stress value change is ≤1~2 Pascal, the system determines that the stress value changes of each end except the primary monitoring end are in a stable state.

[0030] As a preferred solution of the present invention, when it is determined that the stress value changes at other ends are in a non-stationary state, the change law of the stress values ​​at different ends is obtained, and based on the change law, the inclination angles of different ends of the preset hanging basket caused by the changes in the stress values ​​in future time periods are predicted, and through evidence-based and Delphi methods, a graded management plan corresponding to different inclination angles is formulated.

[0031] On the other hand, the present invention provides a real-time monitoring method for the safety of a hanging basket for bridge construction, which is applied to a real-time monitoring system for the safety of a hanging basket for bridge construction, comprising the following steps:

[0032] Acquire initial horizontal data when the preset hanging basket is put into use, and divide the initial horizontal data into at least 5 monitoring data, wherein the 5 monitoring data at least include vertical data of the four ends of the preset hanging basket in a downward position and a horizontal end surface closest to the four ends;

[0033] Based on the vertical data, the vertical data changes are collected during the use of the preset hanging basket; the collection method includes collecting 2 to 3 times per minute and generating a database;

[0034] Performing differential analysis on the vertical data in the database; and synchronously collecting the stress value of the preset hanging basket when collecting the change of the vertical data, analyzing and comparing the stress value with the collected vertical data, and obtaining the correlation law between the change of the vertical data and the stress value;

[0035] Relevant stress values ​​are intercepted and divided in the association law; the relevant stress values ​​include at least 3 stress values ​​that cause the preset hanging basket to develop toward an inclination angle of 1°; wherein the 3 stress values ​​are sorted in order from small to large, and among the sorted stress values, the largest stress value is marked as a risk value; this risk value is a risk value when the preset hanging basket angle is tilted by 1°;

[0036] Calculate the stress value that will cause the preset hanging basket angle to tilt by 2°; and preset a safety threshold value based on the stress value;

[0037] When the tilt angle of the preset hanging basket exceeds the safety threshold, the system determines that the structural safety of the preset hanging basket is in a risky state; otherwise, no determination is made.

[0038] 1. Through multi-dimensional data fusion, combined with inclination sensor and stress value data, the safety status of the preset hanging basket can be evaluated more comprehensively and accurately to avoid misjudgment or omission of single data monitoring;

[0039] 2. The precise division and analysis of stress intervals can more keenly capture the changes in the tilt risk of the preset hanging basket under different stress levels, providing an accurate basis for taking safety measures in a timely manner;

[0040] 3. Real-time data collection and rapid response mechanism ensure that when there is an abnormal change in the preset hanging basket tilt angle or stress value, it can be discovered and warned in the first time, so as to buy valuable emergency response time for construction personnel;

[0041] 4. Accurate early warning and hierarchical management: issue early warnings through the change trend of stress values ​​and critical value calculations, and formulate hierarchical management plans to improve the safety management level and emergency response efficiency of preset hanging basket construction;

[0042] 5. Comprehensively monitor the key parts of the preset hanging basket, including the preset monitoring points at the four ends of the preset hanging basket and between the center and the four ends, so as to more comprehensively understand the overall force and tilt of the preset hanging basket;

[0043] 6. Monitor stress changes in a targeted manner, identify the primary monitoring end and verify the stress value changes at other ends, discover potential local safety hazards in a timely manner, and ensure the overall stability of the preset hanging basket. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing 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 labor. Among them:

[0045] Figure 1 A schematic diagram of the modular structure of a real-time monitoring system for safety of a hanging basket for bridge construction according to an embodiment of the present invention;

[0046] Figure 2 A schematic diagram of a method flow chart of an embodiment of the present invention;

[0047] Figure 3 It is a schematic diagram of the process structure of an embodiment of the present invention;

[0048] Numbers in the figure: 110 - initial data acquisition module; 120 - data acquisition module; 130 - fusion analysis unit; 1301 - stress acquisition module; 1302 - stress interval division module; 1303 - calculation module; 1304 - determination module; 140 - data monitoring unit; 1401 - time analysis module; 1402 - early warning module; 150 - monitoring terminal. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0050] Due to the insufficient fusion of monitoring data at the current stage, there is a lack of effective correlation analysis between the data of the tilt sensor and the data of the stress sensor, making it difficult to comprehensively judge whether the reason for the tilt of the hanging basket is due to changes in the force of its own structure or other reasons, which affects the comprehensive and accurate assessment of the tilt state of the hanging basket. When the tilt of the hanging basket exceeds a certain threshold, the early warning signal cannot be issued in a timely and accurate manner, or the early warning information is not clear enough, which cannot provide construction personnel with sufficient reaction time to take effective countermeasures, increasing the construction safety risk.

[0051] Based on this, the present invention proposes a real-time monitoring system and method for the safety of a hanging basket for bridge construction. Through multi-dimensional data fusion, real-time monitoring and early warning, and comprehensive and targeted monitoring layout, it can more comprehensively and accurately evaluate the safety status of the hanging basket, avoid misjudgment or omission of single data monitoring, significantly improve the safety and efficiency of hanging basket construction, and ensure the quality of bridge construction and the safety of construction personnel.

[0052] The present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0053] Reference Figures 1 to 3 , is an embodiment of the present invention, which provides a real-time monitoring system for the safety of a hanging basket for bridge construction, comprising:

[0054] The initial data acquisition module 110 is used to acquire the initial horizontal data of the preset hanging basket when it is put into use, and divide the initial horizontal data into at least 5 monitoring data, wherein the 5 monitoring data at least include the vertical data of the four ends of the preset hanging basket in the downward position and the nearest horizontal end surface;

[0055] The data acquisition module 120 includes a sensor measurement method for data acquisition, and the sensor measurement method includes an inclination sensor; the data acquisition module is based on vertical data and is used to collect vertical data changes during the use of the preset hanging basket; its collection method includes collecting data 2 to 3 times per minute and generating a database;

[0056] It should be noted that the present embodiment also includes data collection in different time periods; if the environment of the bridge construction site is relatively stable, the force on the hanging basket changes slowly, and the construction process is relatively mature, the sensitivity to the hanging basket tilt is low, in this case, data collection can be considered in different time periods; for example, the tilt data is collected once before, during, and after construction every day, or data is collected according to the conversion nodes of the construction process, such as collecting data before and after concrete pouring, before and after the hanging basket moves, and other key time periods, so as to grasp the tilt change trend of the hanging basket at different construction stages, and provide a reference basis for construction management and quality control;

[0057] It should be further explained in this embodiment that the sensor measurement method also includes an acceleration sensor and a gyroscope sensor; wherein the acceleration sensor calculates the inclination angle of the hanging basket by measuring the acceleration of the hanging basket in different directions; the gyroscope sensor can measure the angular velocity and rotation direction of the hanging basket, and the inclination angle of the hanging basket can be obtained by integrating the angular velocity;

[0058] Fusion analysis unit 130; the fusion analysis unit 130 responds to the database and is used to perform difference analysis on the vertical data in the database; the fusion analysis unit 130 includes a stress acquisition module 1301, a stress interval division module 1302, a calculation module 1303 and a determination module 1304;

[0059] The stress acquisition module 1301 responds to the data acquisition module, and is used to synchronously acquire the stress value of the preset hanging basket when acquiring the vertical data change, and analyze and compare the stress value with the acquired vertical data to obtain the correlation law between the vertical data change and the stress value;

[0060] The stress interval division module 1302 is based on the association rule, and is used to intercept and divide the relevant stress values ​​in the association rule; the relevant stress values ​​include at least 3 stress values ​​that make the preset hanging basket develop towards the tilt angle of 1°; wherein the 3 stress values ​​are sorted in order from small to large, and among the sorted stress values, the largest stress value is marked as a risk value; this risk value is the risk value when the preset hanging basket angle is tilted by 1°;

[0061] The calculation module 1303 is used to calculate the stress value that will cause the preset hanging basket angle to tilt by 2° based on the risk value; and to preset a safety threshold value based on the stress value;

[0062] The determination module 1304 is based on the safety threshold. When the tilt angle of the preset hanging basket exceeds the safety threshold, the system determines that the structural safety of the preset hanging basket is in a risky state; otherwise, no determination is made;

[0063] It should be emphasized in this embodiment that when the preset inclination angle of the hanging basket is between 1° and 2°, within this angle range, although the structural force of the hanging basket changes, it is generally still within its safe bearing range and will not cause serious impact on the overall stability of the hanging basket; however, a slight inclination may affect the pouring quality of concrete, resulting in problems such as uneven concrete surface and uneven thickness, and may also cause displacement of construction equipment and materials on the hanging basket, increasing the difficulty and risk of construction operations;

[0064] Another thing to consider is that when the preset inclination angle of the hanging basket is between 2° and 5°, within this angle range, the structural safety risk of the hanging basket increases significantly, and some components may experience greater stress concentration, resulting in increased deformation of the components, loosening of the connection parts, and even possible local damage;

[0065] When the preset inclination angle of the hanging basket is greater than 5°, the hanging basket is in a very dangerous state and may overturn at any time; most of the components of the hanging basket may have exceeded their designed load-bearing capacity, and may be seriously deformed or damaged, and the anchoring system may also fail; in this case, construction must be stopped immediately and emergency measures must be taken to reinforce, adjust or dismantle the hanging basket to avoid serious safety accidents, resulting in casualties and property losses;

[0066] The data monitoring unit 140 is based on the risk value and is used to monitor the change of the risk value toward the safety threshold when the tilt angle of the preset hanging basket reaches the risk value; the data monitoring unit 140 includes a time analysis module 1401 and an early warning module 1402;

[0067] The time analysis module 1401 is used to analyze the increase and / or decrease of the preset hanging basket stress value with one second as a time period, and record the stress values ​​of 5 to 10 consecutive time periods;

[0068] The early warning module 1402 response time analysis module is used to issue a safety early warning when the stress value shows an increasing trend for 5 to 10 consecutive time periods; otherwise, no safety early warning is issued;

[0069] It should be emphasized in this embodiment that when a safety warning is issued, the stress value corresponding to the safety warning is recorded, the stress value is marked as a reference value, and the median value between the risk value and the safety threshold is obtained; when the reference value does not exceed the median value, the system determines that the stress change of the preset hanging basket is in a stable state, and correspondingly determines that the tilt change of the preset hanging basket is at a stable level; otherwise, no determination is made;

[0070] When it is determined that the stress change of the preset hanging basket is in a non-stationary state, the difference between the median value and the safety threshold is obtained, and the difference is marked as a critical value. The stress value difference generated in adjacent time periods is calculated based on the change trend of the stress value in 5 to 10 consecutive time periods. The time required to reach the critical value is calculated based on the difference, and a safety warning is issued before the time arrives. At the same time, the system determines that the non-stationary state of the preset hanging basket is in a continuously deteriorating state;

[0071] When it is determined that the non-stationary state of the preset hanging basket is in a continuously deteriorating state, the stress value of the end opposite to the end where the stress change of the preset hanging basket is continuously deteriorating is collected by means of diagonal analysis, and the collection frequency of the stress value of the opposite end is given to twice per second, and the change characteristics of the stress value are analyzed at the same time; and based on the change characteristics, the stress value of the continuously deteriorating end is collected at the given collection frequency at the same time, and the change trends of the two stress values ​​are calculated, and the calculation is obtained according to the following formula:

[0072] Among them, h j represents the hth stress value collected at the continuously deteriorating end in the jth second;

[0073] Where sj represents the sth stress value collected at the opposite end in the jth second; w represents the difference between two stress values ​​obtained in the jth second;

[0074] When the difference is decreasing, the system determines that the stresses at both ends of the preset hanging basket are tending to be balanced, and correspondingly determines that the inclination angle of the preset hanging basket is decreasing; otherwise, no determination is made;

[0075] The monitoring terminal 150 is used to record the communication base station matched with the preset hanging basket, and receive the field data uploaded by the collection monitoring point corresponding to the preset hanging basket. When a safety warning is issued for the preset hanging basket, a request for obtaining information of the preset hanging basket warning status is initiated to the communication base station;

[0076] In this embodiment, further, in the initial data acquisition module, the five monitoring data also include monitoring data from the preset center of the hanging basket to the four ends of the preset hanging basket, the monitoring data are data of the preset monitoring points from the preset center of the hanging basket to the four ends of the preset hanging basket, and the four preset monitoring points are monitoring points at a distance of 0.3 to 0.5 meters from the center of the preset hanging basket, and the stress changes from the center to the four preset monitoring points are collected;

[0077] On the basis of the above, this embodiment collects the stress changes from the center to the four preset monitoring points. The collection method includes collecting the stress values ​​of the four preset monitoring points at the same time every second. If the stress value of one of the preset monitoring points is greater than the stress values ​​of the other preset monitoring points, the system marks the end corresponding to the stress value as the primary monitoring end.

[0078] Specifically, in this embodiment, in addition to the primary monitoring end, the stress values ​​of other preset monitoring points are verified, and the verification method includes collecting the stress value changes of each preset monitoring point for 20 consecutive seconds. If the difference range of the stress value change is ≤1-2 Pascal (Pa), the system determines that the stress value changes of other ends except the primary monitoring end are in a stable state;

[0079] Furthermore, when it is determined that the stress value changes at other ends are in a non-stationary state, the changing rules of the stress values ​​at different ends are obtained, and the tilt angles of different ends of the preset hanging basket caused by the changes in stress values ​​in future periods are predicted based on the changing rules. Through evidence-based and Delphi methods, a graded management plan corresponding to different tilt angles is formulated.

[0080] Based on the above, this application can more comprehensively and accurately evaluate the safety status of the hanging basket through multi-dimensional data fusion, real-time monitoring and early warning, and comprehensive and targeted monitoring layout, avoid misjudgment or omission of single data monitoring, significantly improve the safety and efficiency of hanging basket construction, and ensure the quality of bridge construction and the safety of construction workers.

[0081] In combination with the above-mentioned real-time monitoring system for bridge construction safety, this embodiment also proposes a working method of the system, as follows:

[0082] Acquire initial horizontal data when the preset hanging basket is put into use, and divide the initial horizontal data into at least 5 monitoring data, the 5 monitoring data at least including vertical data of the four ends of the preset hanging basket in a downward position and a horizontal end face closest to the four ends;

[0083] Based on the vertical data, the vertical data changes are collected during the use of the preset hanging basket; the collection method includes collecting 2 to 3 times per minute and generating a database;

[0084] Perform differential analysis on the vertical data in the database; and synchronously collect the stress value of the preset hanging basket when collecting vertical data changes, analyze and compare the stress value with the collected vertical data, and obtain the correlation law between the vertical data change and the stress value;

[0085] Relevant stress values ​​are intercepted and divided in the association law; the relevant stress values ​​include at least 3 stress values ​​that cause the preset hanging basket to develop towards an inclination angle of 1°; wherein the 3 stress values ​​are sorted in order from small to large, and among the sorted stress values, the largest stress value is marked as a risk value; this risk value is a risk value when the preset hanging basket angle is tilted by 1°;

[0086] Calculate the stress value that will cause the preset hanging basket angle to tilt by 2°; and preset the safety threshold value based on the stress value;

[0087] When the tilt angle of the preset hanging basket exceeds the safety threshold, the system determines that the structural safety of the preset hanging basket is at risk; otherwise, no determination is made.

[0088] To sum up, the present invention can more comprehensively and accurately evaluate the safety status of the hanging basket through multi-dimensional data fusion, real-time monitoring and early warning, and comprehensive and targeted monitoring layout, avoid misjudgment or omission of single data monitoring, significantly improve the safety and efficiency of hanging basket construction, and ensure the quality of bridge construction and the safety of construction personnel.

[0089] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A real-time monitoring system for the safety of a hanging basket for bridge construction, characterized in that: include: An initial data acquisition module, used to acquire initial horizontal data when the preset hanging basket is put into use, and divide the initial horizontal data into at least 5 monitoring data, wherein the 5 monitoring data at least include vertical data of the four ends of the preset hanging basket in a downward position and a horizontal end face closest to the four ends; A data acquisition module, wherein the data acquisition module includes a sensor measurement method for data acquisition, wherein the sensor measurement method includes an inclination sensor; the data acquisition module is based on the vertical data and is used to collect changes in the vertical data during the use of the preset hanging basket; the data acquisition method includes collecting data 2 to 3 times per minute and generating a database; A fusion analysis unit; the fusion analysis unit responds to the database and is used to perform differential analysis on the vertical data in the database; the fusion analysis unit includes a stress acquisition module, a stress interval division module, a calculation module and a determination module; The stress acquisition module responds to the data acquisition module, and is used to synchronously acquire the stress value of the preset hanging basket when acquiring the vertical data change, and analyze and compare the stress value with the acquired vertical data to obtain the correlation law between the vertical data change and the stress value; The stress interval division module is based on the association rule, and is used to intercept and divide relevant stress values ​​in the association rule; the relevant stress values ​​include at least 3 stress values ​​that cause the preset hanging basket to develop towards an inclination angle of 1°; wherein the 3 stress values ​​are sorted in order from small to large, and among the sorted stress values, the largest stress value is marked as a risk value; this risk value is a risk value when the preset hanging basket angle is tilted by 1°; The calculation module is based on the risk value and is used to calculate the stress value that will cause the preset hanging basket angle to tilt by 2°; and preset a safety threshold value based on the stress value; The determination module is based on the safety threshold, and when the tilt angle of the preset hanging basket exceeds the safety threshold, the system determines that the structural safety of the preset hanging basket is in a risky state; otherwise, no determination is made; A data monitoring unit, the data monitoring unit is based on the risk value and is used to monitor the change of the risk value toward the safety threshold when the inclination angle of the preset hanging basket reaches the risk value; the data monitoring unit includes a time analysis module and an early warning module; The time analysis module is used to analyze the increase and / or decrease of the preset hanging basket stress value with one second as a time period, and record the stress values ​​of 5 to 10 consecutive time periods; The warning module responds to the time analysis module and is used to issue a safety warning when the stress value shows an increasing trend for 5 to 10 consecutive time periods; otherwise, no safety warning is issued; The monitoring terminal is used to record the communication base station matched with the preset hanging basket, and receive the field data uploaded by the collection monitoring point corresponding to the preset hanging basket. When the safety warning is issued to the preset hanging basket, a request for obtaining information on the warning status of the preset hanging basket is initiated to the communication base station.

2. A real-time monitoring system for bridge construction safety of a hanging basket as claimed in claim 1, characterized in that: When the safety warning is issued, the stress value corresponding to the safety warning is recorded, the stress value is marked as a reference value, and the median value between the risk value and the safety threshold is obtained; when the reference value does not exceed the median value, the system determines that the stress change of the preset hanging basket is in a stable state, and correspondingly determines that the tilt change of the preset hanging basket is at a stable level; Otherwise, no judgment is made.

3. A real-time monitoring system for bridge construction safety of a hanging basket as claimed in claim 2, characterized in that: When it is determined that the stress change of the preset hanging basket is in a non-steady state, the difference between the median value and the safety threshold is obtained, the difference is marked as a critical value, and the stress value difference generated in adjacent time periods is calculated based on the change trend of the stress value in 5 to 10 consecutive time periods. The time required to reach the critical value is calculated based on the difference, and a safety warning is issued before the time arrives. At the same time, the system determines that the non-steady state of the preset hanging basket is in a continuously deteriorating state.

4. A real-time monitoring system for bridge construction safety of a hanging basket as claimed in claim 3, characterized in that: When it is determined that the non-stationary state of the preset hanging basket is in a continuously deteriorating state, a stress value at an end opposite to an end where the stress change of the preset hanging basket is continuously deteriorating is collected by a method including diagonal analysis, and the collection frequency of the stress value at the opposite end is set to twice per second, and the change characteristics of the stress value are analyzed at the same time; Based on the change characteristics, the stress value of the continuously deteriorating end is collected at the given collection frequency, and the change trend of the two stress values ​​is calculated according to the following formula: Among them, h j represents the hth stress value collected at the continuously deteriorating end in the jth second; Wherein, sj represents the sth stress value collected at the opposite end in the jth second; w represents the difference between the two stress values ​​obtained in the jth second; When the difference is decreasing, the system determines that the stress of the preset hanging basket at the two ends is tending to be balanced, and correspondingly determines that the inclination angle of the preset hanging basket is decreasing; otherwise, no determination is made.

5. A real-time monitoring system for bridge construction safety of a hanging basket as claimed in claim 1, characterized in that: In the initial data acquisition module, the five monitoring data also include monitoring data from the preset center of the hanging basket to the four ends of the preset hanging basket. The monitoring data are data of preset monitoring points from the preset center of the hanging basket to the four ends of the preset hanging basket, and the four preset monitoring points are monitoring points at a distance of 0.3 to 0.5 meters from the center of the preset hanging basket, and stress changes from the center to the four preset monitoring points are collected.

6. A real-time monitoring system for bridge construction safety of a hanging basket as claimed in claim 5, characterized in that: The stress changes from the center to the four preset monitoring points are collected in a manner that includes collecting the stress values ​​of the four preset monitoring points simultaneously every second. If the stress value of one of the preset monitoring points is greater than the stress values ​​of the other preset monitoring points, the system will mark the end corresponding to the stress value as the primary monitoring end.

7. A real-time monitoring system for bridge construction safety of a hanging basket as claimed in claim 6, characterized in that: In addition to the primary monitoring end, the stress values ​​of other preset monitoring points are verified. The verification method includes collecting the stress value changes of each preset monitoring point for 20 consecutive seconds. If the difference range of the stress value change is ≤1~2 Pascal, the system determines that the stress value changes of other ends except the primary monitoring end are in a stable state.

8. A real-time monitoring system for bridge construction safety of a hanging basket as claimed in claim 7, characterized in that: When it is determined that the stress value changes at other ends are in a non-stationary state, the change law of the stress values ​​at different ends is obtained, and the inclination angles of different ends of the preset hanging basket caused by the changes in the stress values ​​in future periods are predicted based on the change law. Through evidence-based and Delphi methods, a graded management plan corresponding to different inclination angles is formulated.

9. A method for real-time monitoring of the safety of a hanging basket for bridge construction, applied to a real-time monitoring system for the safety of a hanging basket for bridge construction as claimed in claim 1, characterized in that: The following steps are involved: Acquire initial horizontal data when the preset hanging basket is put into use, and divide the initial horizontal data into at least 5 monitoring data, wherein the 5 monitoring data at least include vertical data of the four ends of the preset hanging basket in a downward position and a horizontal end surface closest to the four ends; Based on the vertical data, the vertical data changes are collected during the use of the preset hanging basket; the collection method includes collecting 2 to 3 times per minute and generating a database; Performing differential analysis on the vertical data in the database; and synchronously collecting the stress value of the preset hanging basket when collecting the change of the vertical data, analyzing and comparing the stress value with the collected vertical data, and obtaining the correlation law between the change of the vertical data and the stress value; Relevant stress values ​​are intercepted and divided in the association law; the relevant stress values ​​include at least 3 stress values ​​that make the preset hanging basket develop towards an inclination angle of 1°; wherein the 3 stress values ​​are sorted in order from small to large, and among the sorted stress values, the largest stress value is marked as a risk value; This risk value is the risk value when the preset hanging basket angle is tilted by 1°; Calculate the stress value that will cause the preset hanging basket angle to tilt by 2°; and preset a safety threshold value based on the stress value; When the tilt angle of the preset hanging basket exceeds the safety threshold, the system determines that the structural safety of the preset hanging basket is in a risky state; otherwise, no determination is made.

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