Intelligent monitoring device and method for preloading process of road construction support

Abstract

The present application discloses an intelligent monitoring device and method for the preloading process of a road construction support, and the present application belongs to the field of road construction. The device includes: a preloading load change trend determination module for determining whether the preloading strategy needs to be adjusted; a preloading strategy adjustment module for determining the support preloading adjustment strategy through a preset control prediction model; a preloading adjustment module for performing preloading adjustments on the first and second areas of the support; a preloading monitoring module for obtaining the preloading loads of the two areas of the support in real time, and stopping the preloading of the two areas of the support when the corresponding level is reached; a timestamp acquisition module for determining whether the preset settlement collection time interval has been reached; an early warning module for collecting the settlement of the two areas of the support, and sending an alarm message to the control center if it exceeds the threshold. This solution can quickly respond to and adjust the preloading strategy to avoid support damage caused by uneven loads, thereby improving preloading safety; and it also improves preloading efficiency and reduces the workload of operators.

Description

Technical Field

[0001] The present application relates to the field of road construction, and specifically to an intelligent monitoring device and method for the pre-compression process of a road construction support. Background Art

[0002] In the current construction field, cast-in-situ box girder technology is widely used due to its advantages such as light weight, large load-bearing capacity, uniform force, simple and efficient construction, and large span. However, in order to ensure the quality and safety of bridge construction, pre-stressing the cast-in-situ box girder support has become a crucial technical link. In the existing technology, when pre-stressing the cast-in-situ box girder support, it is necessary to manually control the weight of each level of loading, and after each level of loading is completed, it is necessary to manually monitor the observation points and record the deformation and settlement data of the structure. However, when manually controlling the loading, it is impossible to adjust the pre-stressing strategy according to the load conditions in real time, which may cause the settlement after pre-stressing to be too high, causing the support to lose stability, thereby reducing the overall reliability of the system and increasing uncertainty and risk in future operations. In addition, manual control and monitoring require a lot of time, which reduces the pre-stressing efficiency. Summary of the Invention

[0003] The present application provides an intelligent monitoring device for the preloading process of a road construction support, which solves the problem in the prior art that when the preloading of the loaded support is manually controlled, the preloading strategy cannot be adjusted in real time according to the load conditions, which may cause the settlement after preloading to be too high, causing the support to lose stability, thereby reducing the overall reliability of the system and increasing uncertainty and risks in future operations; and manual control and monitoring require a lot of time, thereby reducing the preloading efficiency.

[0004] In a first aspect, an embodiment of the present application provides an intelligent monitoring device for a road construction support preloading process, the device comprising:

[0005] a preload change trend determination module, configured to perform preload on the first region of the stent and the second region of the stent according to a preset preload strategy, obtain a first preload change trend of the first region of the stent and a second preload change trend of the second region of the stent, and determine whether the preload strategy needs to be adjusted based on the first preload change trend, the second preload change trend, a preset first preload change rate threshold, and a preset second preload change rate threshold;

[0006] a preloading strategy adjustment module, configured to input the first preloading load variation trend and the second preloading load variation trend into a preset control prediction model to determine the stent preloading adjustment strategy if the preloading strategy needs to be adjusted;

[0007] A pre-compression adjustment module, configured to adjust the pre-compression of the first region of the stent and the second region of the stent according to the stent pre-compression adjustment strategy;

[0008] a pre-compression monitoring module, configured to obtain in real time a first pre-compression load of a first region of the stent and a second pre-compression load of a second region of the stent, and to stop pre-compression operation on the first region of the stent when the first pre-compression load reaches a preset first load level, and to stop pre-compression operation on the second region of the stent when the second pre-compression load reaches a preset second load level;

[0009] A timestamp acquisition module is used to obtain the current system timestamp in real time, and determine whether a preset settlement amount collection time interval has been reached based on the current system timestamp and the preloading stop timestamp;

[0010] The early warning module is used to collect the first settlement of the first area of ​​the bracket and the second settlement of the second area of ​​the bracket if the preset settlement collection time interval is reached. If the first settlement and / or second settlement exceeds the preset settlement threshold, an alarm message is sent to the control center.

[0011] Furthermore, the device further comprises a cyclic pre-pressing module, which is used to:

[0012] If the first settlement amount and the second settlement amount do not exceed the preset settlement amount threshold, the first area of ​​the bracket and the second area of ​​the bracket are pre-stressed step by step, and the first pre-stressing load and the second pre-stressing load are continuously obtained and updated. When the updated first pre-stressing load and the second pre-stressing load reach the corresponding level, the pre-stressing is stopped, and the first settlement amount of the first area of ​​the bracket and the second settlement amount of the second area of ​​the bracket are obtained each time the preset settlement amount collection time interval is reached. If the first settlement amount and the second settlement amount do not exceed the preset settlement amount threshold, the first area of ​​the bracket and the second area of ​​the bracket continue to be pre-stressed until the last level of bracket pre-stressing of the first area of ​​the bracket and the second area of ​​the bracket is completed.

[0013] Furthermore, the preloading strategy adjustment module is used to:

[0014] Determining a first timestamp of each first preset time point of the first preload change trend and a corresponding first preload change rate, and determining a second timestamp of each second preset time point of the second preload change trend and a corresponding second preload change rate;

[0015] Determining a first future preload change trend of the first region of the stent and a second future preload change trend of the second region of the stent according to the first timestamp, the first preload change rate, the second timestamp, and the second preload change rate;

[0016] The bracket preload adjustment strategy is determined according to the first future preload change trend and the second future preload change trend.

[0017] Furthermore, the preloading strategy adjustment module is further configured to:

[0018] Determining a third preload corresponding to each third preset time point in the first future preload variation trend, and determining a fourth preload corresponding to each fourth preset time point in the second future preload variation trend;

[0019] Obtaining stent design information, and calculating, based on the stent design information, the third preload, the fourth preload, and a preset settlement calculation formula, a third settlement of the first region of the stent corresponding to each third preset time point, and calculating a fourth settlement of the second region of the stent corresponding to each fourth preset time point;

[0020] Determine a first future settlement change trend of the first region of the bracket according to the third settlement amount, and determine a second future settlement change trend of the second region of the bracket according to the fourth settlement amount;

[0021] A stent preload adjustment strategy is determined according to the first future settlement change trend and the second future settlement change trend.

[0022] Furthermore, the preloading strategy adjustment module is further configured to:

[0023] Determining whether there is a third preset time point in the first future settlement amount change trend at which a preset settlement amount threshold is exceeded, and determining whether there is a fourth preset time point in the second future settlement amount change trend at which a preset settlement amount threshold is exceeded;

[0024] If the third preset time point and / or the fourth preset time point exist, determining the time period corresponding to the third preset time point and / or the fourth preset time point;

[0025] If the time period is a short time period, the fifth preload that needs to be reduced in the first area of ​​the stent and / or the sixth preload that needs to be reduced in the second area of ​​the stent are calculated based on the stent design information, the third settlement and / or the fourth settlement corresponding to the third preset time point and / or the fourth preset time point, the preset settlement threshold, and the preset settlement calculation formula;

[0026] A stent preload adjustment strategy is determined according to the fifth preload and / or the sixth preload.

[0027] Furthermore, the preloading strategy adjustment module is further configured to:

[0028] If the time period is a long time period, obtain the first historical settlement change amount of each period of the first area of ​​the bracket and the second historical settlement change amount of each period of the second area of ​​the bracket, and determine the first number of periods that the first area of ​​the bracket needs to be extended and / or the second number of periods that the second area of ​​the bracket needs to be extended based on the first historical settlement change amount, the second historical settlement change amount, the third settlement amount and / or the fourth settlement amount corresponding to the third preset time point and / or the fourth preset time point, and the preset settlement amount threshold;

[0029] A stent preload adjustment strategy is determined according to the first cycle number and the second cycle number.

[0030] Furthermore, the preset settlement calculation formula is:

[0031]

[0032] Among them, δ is the third settlement or the fourth settlement; P is the third preload or the fourth preload; L is the length of the first area of ​​the bracket or the length of the second area of ​​the bracket; E is the elastic modulus of the material of the first area of ​​the bracket or the elastic modulus of the material of the second area of ​​the bracket; I is the moment of inertia of the cross section of the first area of ​​the bracket or the moment of inertia of the cross section of the second area of ​​the bracket.

[0033] Furthermore, the preload change trend determination module is used to:

[0034] The crane is controlled to pre-press the first area of ​​the bracket according to a preset pre-pressing strategy, and the water pump is controlled to pre-press the second area of ​​the bracket according to the preset pre-pressing strategy.

[0035] Furthermore, the training process of the preset regulation prediction model includes:

[0036] Obtain historical stent preload adjustment records, and determine historical short-term adjustment records and historical long-term adjustment records based on the historical stent preload adjustment records;

[0037] Determine, based on the historical short-time period adjustment records, a first historical load change trend, a first historical preload, a first historical preset time point, a corresponding first historical preload change rate, a first historical settlement, a first historical settlement change trend, and a first historical preload adjustment value of a first area of ​​the bracket, and determine a second historical load change trend, a second historical preload, a second historical preset time point, a corresponding second historical preload change rate, a second historical settlement, a second historical settlement change trend, and a second historical preload adjustment value of a second area of ​​the bracket;

[0038] Determine the third historical load change trend, the third historical preload, the third historical preset time point, the corresponding third historical preload change rate, the third historical settlement, the third historical settlement change trend, the first historical settlement change, and the first historical cycle number adjustment value of the first area of ​​the bracket based on the historical long-term period adjustment record, and determine the fourth historical load change trend, the fourth historical preload, the fourth historical preset time point, the corresponding fourth historical preload change rate, the fourth historical settlement, the fourth historical settlement change trend, the second historical settlement change, and the second historical preload adjustment value of the second area of ​​the bracket;

[0039] Creating a first data set based on historical short-term time period adjustment records, and creating a second data set based on historical long-term time period adjustment records;

[0040] A regulation prediction model is constructed and trained according to the stent design information, the first data set, and the second data set until the regulation prediction model meets a preset model determination criterion.

[0041] In a second aspect, an embodiment of the present application provides a method for intelligently monitoring a pre-compression process of a road construction support, the method comprising:

[0042] Preloading the first region and the second region of the stent according to a preset preloading strategy, obtaining a first preloading load change trend of the first region of the stent and a second preloading load change trend of the second region of the stent, and determining whether the preloading strategy needs to be adjusted according to the first preloading load change trend, the second preloading load change trend, a preset first preloading load change rate threshold, and a preset second preloading load change rate threshold;

[0043] If the preloading strategy needs to be adjusted, the first preloading load variation trend and the second preloading load variation trend are input into a preset control prediction model to determine the stent preloading adjustment strategy;

[0044] Adjusting the pre-compression of the first region and the second region of the stent according to the stent pre-compression adjustment strategy;

[0045] acquiring in real time a first pre-compression load of a first region of the stent and a second pre-compression load of a second region of the stent, stopping the pre-compression operation on the first region of the stent when the first pre-compression load reaches a preset first load level, and stopping the pre-compression operation on the second region of the stent when the second pre-compression load reaches a preset second load level;

[0046] Acquire the current system timestamp in real time, and determine whether the preset settlement amount collection time interval has been reached according to the current system timestamp and the preloading stop timestamp;

[0047] If the preset settlement collection time interval is reached, the first settlement of the first area of ​​the bracket and the second settlement of the second area of ​​the bracket are collected. If the first settlement and / or second settlement exceeds the preset settlement threshold, an alarm message is sent to the control center.

[0048] In an embodiment of the present application, a prestress load change trend determination module is used to prestress the first area of ​​the bracket and the second area of ​​the bracket according to a preset prestress strategy, obtain a first prestress load change trend of the first area of ​​the bracket and a second prestress load change trend of the second area of ​​the bracket, and determine whether the prestress strategy needs to be adjusted according to the first prestress load change trend, the second prestress load change trend, the preset first prestress load change rate threshold and the preset second prestress load change rate threshold; a prestress strategy adjustment module is used to input the first prestress load change trend and the second prestress load change trend into a preset control prediction model if the prestress strategy needs to be adjusted, and determine the bracket prestress adjustment strategy; a prestress adjustment module is used to adjust the prestress of the first area of ​​the bracket and the second area of ​​the bracket according to the bracket prestress adjustment strategy. A preloading monitoring module is used to obtain the first preloading load of the first area of ​​the support and the second preloading load of the second area of ​​the support in real time, and to stop the preloading work on the first area of ​​the support when the first preloading load reaches the preset first load level, and to stop the preloading work on the second area of ​​the support when the second preloading load reaches the preset second load level; a timestamp acquisition module is used to obtain the current system timestamp in real time, and to determine whether the preset settlement collection time interval has been reached based on the current system timestamp and the stop preloading timestamp; an early warning module is used to collect the first settlement of the first area of ​​the support and the second settlement of the second area of ​​the support if the preset settlement collection time interval has been reached, and to send an alarm message to the control center if the first settlement and / or the second settlement exceeds the preset settlement threshold. By using the above-mentioned intelligent monitoring device for the preloading process of the road construction support, the preloading load change trend is monitored in real time, and the preloading strategy can be quickly responded to and adjusted to avoid damage to the support caused by uneven load, thereby improving the safety of preloading. It also improves the preloading efficiency, reduces human intervention, and reduces the workload of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is a schematic diagram of the structure of the intelligent monitoring device for the pre-compression process of the road construction support provided in the first, second and third embodiments of the present application;

[0050] Figure 2 This is a flow chart of the intelligent monitoring method for the pre-compression process of a road construction support provided in Example 4 of the present application. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the present application clearer, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. It should also be noted that, for ease of description, only parts related to the present application, not all of the contents, are shown in the accompanying drawings. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the accompanying drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0052] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0053] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0054] The intelligent monitoring device for the pre-compression process of a road construction support provided in the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0055] Example 1

[0056] Figure 1 This is a schematic diagram of the structure of the intelligent monitoring device for the pre-compression process of road construction supports provided in Example 1 of the present application. The device includes:

[0057] A preload change trend determination module 101 is configured to perform preload on a first region and a second region of the stent according to a preset preload strategy, obtain a first preload change trend of the first region of the stent and a second preload change trend of the second region of the stent, and determine whether the preload strategy needs to be adjusted based on the first preload change trend, the second preload change trend, a preset first preload change rate threshold, and a preset second preload change rate threshold;

[0058] The preloading strategy adjustment module 102 is configured to input the first preloading load variation trend and the second preloading load variation trend into a preset control prediction model to determine the stent preloading adjustment strategy if the preloading strategy needs to be adjusted;

[0059] A pre-compression adjustment module 103 is configured to adjust the pre-compression of the first region and the second region of the stent according to the stent pre-compression adjustment strategy;

[0060] a preload monitoring module 104, configured to obtain in real time a first preload of a first region of the stent and a second preload of a second region of the stent, and to stop preloading the first region of the stent when the first preload reaches a preset first load level, and to stop preloading the second region of the stent when the second preload reaches a preset second load level;

[0061] The timestamp acquisition module 105 is used to obtain the current system timestamp in real time, and determine whether the preset settlement amount collection time interval has been reached according to the current system timestamp and the preloading stop timestamp;

[0062] Early warning module 106 is configured to collect a first settlement amount in the first region of the support and a second settlement amount in the second region of the support upon reaching a preset settlement collection interval, and to send an alarm to a control center if the first settlement amount and / or the second settlement amount exceeds a preset settlement threshold. This solution can be used to determine whether preload adjustment is necessary based on the preload load change trend during preload of the first and second regions of the support.

[0063] Based on the above usage scenarios, it can be understood that the executor of this application can be the intelligent monitoring device for the pre-compression process of the road construction support, and no excessive restrictions are made here.

[0064] In this solution, the pre-load strategy can be a plan and method for pre-loading the first and second regions of the stent. Specifically, it can include the specific steps, time schedule, pressure range, and monitoring frequency for pre-loading. The purpose of the pre-loading strategy is to ensure that the stent can stably support the structure and avoid excessive settlement or deformation.

[0065] The first support area may be part of the support structure supporting the box girder web and flange bottom formwork, which bear large vertical loads during box girder construction.

[0066] The second area of ​​the support can be part of the support structure that supports the bottom plate. The bottom plate is usually located at the bottom of the structure and bears all the loads from the upper structure.

[0067] The first preload variation trend may be a variation of the preload of the first region of the bracket over time. Specifically, it may be represented by a series of data points (timestamps and corresponding preload values) to form a curve that varies over time.

[0068] The second pre-load variation trend may be a variation of the pre-load of the second region of the stent over time. Specifically, it may be represented by a series of data points to form a curve that varies over time.

[0069] The first preload change rate threshold may be an allowable range of change rates of the preload in the first region of the stent during real-time monitoring.

[0070] The second preload change rate threshold may be an allowable range of change rates of the preload in the second region of the stent during real-time monitoring.

[0071] According to the preset prestressing strategy, the first area (such as the box girder web and wing plate bottom formwork) and the second area (such as the bottom plate) of the bracket can be prestressed, the prestressing equipment can be started, and the prestressing load can be gradually applied. Use sensors and monitoring equipment in real time to obtain the prestressing load data of the first area and the second area of ​​the bracket, record the load changes at each time point, and form the first prestressing load change trend and the second prestressing load change trend. Compare the prestressing load change trend with the preset first prestressing load change rate threshold and the second prestressing load change rate threshold to determine whether the load changes in the first area and the second area of ​​the bracket are within the threshold range. If the load change trend exceeds the preset change rate threshold, it is determined that the prestressing strategy needs to be adjusted.

[0072] The preset control prediction model can be an algorithmic model based on historical and real-time data, used to predict future load trends and determine preload adjustment strategies based on the predicted results. Specifically, it can include time series models, machine learning models, and deep learning models. For example, a time series model can use historical and real-time load data to predict load trends over a period of time. A machine learning model can be trained to output a recommended preload adjustment strategy based on the current load trend as input.

[0073] Stent preload adjustment strategies can be specific measures to adjust the preload process based on the predictions of the control prediction model. These measures aim to ensure that the stent operates within a safe range and optimize its efficiency. Specifically, they can include adjusting the preload force, increasing or decreasing the stent's preload force to account for future load changes. Adjusting the preload cycle, varying the preload interval, can also disperse the load and reduce the instantaneous stress on the stent.

[0074] The first preload change trend and the second preload change trend can be input into a preset control and prediction model. Specifically, the time series model can predict future load change trends based on historical and current data. The machine learning model can output adjustment strategy recommendations through a trained algorithm. The output of the control and prediction model is then analyzed to determine the future preload change trend and whether the preload strategy needs to be adjusted. Based on the prediction results, a specific preload adjustment strategy is formulated, which can specifically include adjusting the preload, for example, reducing the preload in the first area by 10% and reducing the preload in the second area by 15%. Adjusting the preload period, for example, extending the preload period in the first area by 5 minutes and extending the preload period in the second area by 10 minutes.

[0075] You can send instructions to the automatic prestressing device to adjust the prestressing force in the first and second areas of the bracket. For example, reduce the prestressing force in the first area according to the strategy. For example, adjust the prestressing force from 500kN to 450kN. Reduce the prestressing force in the second area according to the strategy. For example, adjust the prestressing force from 600kN to 510kN. Or send instructions to the automatic prestressing device to adjust the prestressing period. Extend the prestressing period according to the strategy. For example, adjust the period from 20 minutes to 25 minutes. Extend the prestressing period according to the strategy. For example, adjust the period from 30 minutes to 40 minutes.

[0076] The first pre-compression load may be a real-time load value borne by the first region of the bracket during the pre-compression process. Specifically, the region may include the box beam web and the flange bottom formwork.

[0077] The second pre-compression load may be a real-time load value borne by the second region of the support during the pre-compression process. This region generally includes the support bottom plate.

[0078] Load sensors can be installed at key locations in the first area of ​​the bracket and the second area of ​​the bracket to ensure that the load in the area can be accurately measured. A real-time data acquisition system is established to transmit the load data measured by the sensor to the central control system in real time. The central control system continuously monitors and records the load changes in the first area of ​​the bracket and the second area of ​​the bracket to ensure that the first preload and the second preload can be obtained in a timely manner. The system compares the first preload and the second preload with the preset first and second load levels. When the system detects that the first preload of the first area of ​​the bracket reaches the preset first load level, and the second preload reaches the preset second load level, it automatically sends a stop preloading instruction to the preloading equipment in the first area to immediately stop the preloading work.

[0079] The current system timestamp may refer to the current time point of the system during the settlement monitoring process. Specifically, it may be expressed in the form of date and time, for example: 2024-06-20 14:35:26.

[0080] The preset settlement collection interval can be the time interval between the completion of the stent preloading and the next settlement data collection. In this solution, after each loading stage is completed, the next loading stage should be stopped, and stent settlement should be monitored every 12 hours. Therefore, the preset settlement collection interval can be 12 hours.

[0081] You can use the system's built-in clock function to obtain the current timestamp and set a preset settlement collection interval. The time difference between the current timestamp and the preloading stop timestamp is calculated in real time, and the time difference is compared to see if it reaches the preset collection interval.

[0082] The first settlement amount may be a vertical displacement amount of the first region of the bracket within a preset time interval, reflecting the vertical settlement change of the region caused by the load during the pre-compression process.

[0083] The second settlement amount may be the vertical displacement of the second region of the stent within a preset time interval, reflecting the vertical settlement change of the region caused by the load during the pre-compression process.

[0084] The preset settlement threshold can be a pre-set safety standard, indicating the maximum settlement allowed in each region of the stent during the preloading process. Exceeding this threshold may cause instability or damage to the stent structure.

[0085] An alarm message can be a notification automatically sent by the system to the control center when the settlement of the first or second area of ​​the bracket exceeds a preset settlement threshold. This message is used to alert operators that the bracket may have a safety hazard and that immediate action is required. Specifically, it may include preloading system identification information, such as the system ID or location, the specific settlement amount (first or second settlement amount) that exceeded the threshold, and the corresponding timestamp.

[0086] The control center may be a central system responsible for monitoring and managing the support preloading and settlement data. Specifically, it may be a computer system that integrates data acquisition, processing and alarm functions.

[0087] High-precision settlement sensors can be installed at key locations in the first and second areas of the bracket to ensure accurate measurement of settlement. A real-time data acquisition system can be established to transmit the settlement data measured by the sensors to the central control system in real time. Within a preset time interval, the system automatically collects settlement data from the first and second areas of the bracket, records the first and second settlements, and compares the settlement data obtained in real time with the preset settlement threshold. If the first and / or second settlements exceed the preset settlement threshold, the system will trigger an alarm mechanism and automatically generate an alarm message, including the specific settlement exceeding the standard and the corresponding timestamp. The alarm message can be sent to the control center via wireless communication technology.

[0088] In an embodiment of the present application, a prestress load change trend determination module is used to prestress the first area of ​​the bracket and the second area of ​​the bracket according to a preset prestress strategy, obtain a first prestress load change trend of the first area of ​​the bracket and a second prestress load change trend of the second area of ​​the bracket, and determine whether the prestress strategy needs to be adjusted according to the first prestress load change trend, the second prestress load change trend, the preset first prestress load change rate threshold and the preset second prestress load change rate threshold; a prestress strategy adjustment module is used to input the first prestress load change trend and the second prestress load change trend into a preset control prediction model if the prestress strategy needs to be adjusted, and determine the bracket prestress adjustment strategy; a prestress adjustment module is used to adjust the prestress of the first area of ​​the bracket and the second area of ​​the bracket according to the bracket prestress adjustment strategy. A preloading monitoring module is used to obtain the first preloading load of the first area of ​​the support and the second preloading load of the second area of ​​the support in real time, and to stop the preloading work on the first area of ​​the support when the first preloading load reaches the preset first load level, and to stop the preloading work on the second area of ​​the support when the second preloading load reaches the preset second load level; a timestamp acquisition module is used to obtain the current system timestamp in real time, and to determine whether the preset settlement collection time interval has been reached based on the current system timestamp and the stop preloading timestamp; an early warning module is used to collect the first settlement of the first area of ​​the support and the second settlement of the second area of ​​the support if the preset settlement collection time interval has been reached, and to send an alarm message to the control center if the first settlement and / or the second settlement exceeds the preset settlement threshold. By using the above-mentioned intelligent monitoring device for the preloading process of the road construction support, the preloading load change trend is monitored in real time, and the preloading strategy can be quickly responded to and adjusted to avoid damage to the support caused by uneven load, thereby improving the safety of preloading. It also improves the preloading efficiency, reduces human intervention, and reduces the workload of operators.

[0089] On the basis of the above technical solution, optionally, the device further comprises a cyclic pre-pressing module, and the cyclic pre-pressing module is used to:

[0090] If the first settlement amount and the second settlement amount do not exceed the preset settlement amount threshold, the first area of ​​the bracket and the second area of ​​the bracket are pre-stressed step by step, and the first pre-stressing load and the second pre-stressing load are continuously obtained and updated. When the updated first pre-stressing load and the second pre-stressing load reach the corresponding level, the pre-stressing is stopped, and the first settlement amount of the first area of ​​the bracket and the second settlement amount of the second area of ​​the bracket are obtained each time the preset settlement amount collection time interval is reached. If the first settlement amount and the second settlement amount do not exceed the preset settlement amount threshold, the first area of ​​the bracket and the second area of ​​the bracket continue to be pre-stressed until the last level of bracket pre-stressing of the first area of ​​the bracket and the second area of ​​the bracket is completed.

[0091] In this solution, according to the preset prestressing strategy, the initial prestressing operation is performed on the first area and the second area of ​​the bracket, and the first prestressing load change trend of the first area of ​​the bracket and the second prestressing load change trend of the second area of ​​the bracket are continuously obtained. When the preset settlement collection time interval is reached, the first settlement of the first area of ​​the bracket and the second settlement of the second area of ​​the bracket are collected. The first settlement and the second settlement are compared with the preset settlement threshold. If the settlement does not exceed the threshold, the next level of prestressing operation is performed on the first area and the second area of ​​the bracket, and the first prestressing load and the second prestressing load are continuously obtained and updated. When the updated first prestressing load and the second prestressing load reach the corresponding level, the prestressing is stopped. Each time the preset settlement collection time interval is reached, the above steps are repeated to collect a new round of settlement data, and it is determined whether to perform the next level of prestressing operation based on the preset settlement threshold. If the settlement is found to exceed the preset threshold at any time, the current prestressing operation is stopped, and an alarm message is sent to the control center to ensure timely response.

[0092] In this solution, through the method of step-by-step preloading and settlement monitoring, the preloading operation of the first and second areas of the stent can be completed step by step under the premise that the settlement does not exceed the preset threshold, thereby ensuring the stability and safety of the stent.

[0093] On the basis of the above technical solution, optionally, the preload change trend determination module is used to:

[0094] The crane is controlled to pre-press the first area of ​​the bracket according to a preset pre-pressing strategy, and the water pump is controlled to pre-press the second area of ​​the bracket according to the preset pre-pressing strategy.

[0095] In this solution, a crane can be a mechanical device used for lifting, handling and transporting materials, and can move and place heavy objects through a hook or other grabbing tools.

[0096] A water pump is a mechanical device used to transport liquids, driven by an electric motor or other power source to achieve liquid flow and pressure increase. During the preloading process of the stent, the water pump is used to fill the water bag in the second area of ​​the stent to apply the preloading load.

[0097] The preset preloading strategy can be to automatically control the crane to lift the steel bars so that the first area of ​​the bracket reaches the corresponding load level, and automatically control the water pump to fill the water bag in the second area of ​​the bracket with water to preload it to reach the corresponding level.

[0098] The preset preloading strategy can be transmitted to the automated control system via wireless communication technology. The automated control system then controls the crane to lift and install the steel bars, ensuring that the preloading load is applied properly. The water pump is also controlled to fill the water bag with water for preloading, ensuring that the preloading load is evenly distributed.

[0099] In this solution, the first area and the second area of ​​the bracket are pre-pressed by automatically controlling the crane and the water pump, which can improve the pre-pressing efficiency and reduce labor costs.

[0100] Example 2

[0101] Figure 1 This is a schematic diagram of the structure of the intelligent monitoring device for the pre-pressing process of the road construction support provided in the second embodiment of the present application. Figure 1 As shown, specifically including the following:

[0102] The preloading strategy adjustment module 102 is used to:

[0103] Determining a first timestamp of each first preset time point of the first preload change trend and a corresponding first preload change rate, and determining a second timestamp of each second preset time point of the second preload change trend and a corresponding second preload change rate;

[0104] Determining a first future preload change trend of the first region of the stent and a second future preload change trend of the second region of the stent according to the first timestamp, the first preload change rate, the second timestamp, and the second preload change rate;

[0105] The bracket preload adjustment strategy is determined according to the first future preload change trend and the second future preload change trend.

[0106] In this solution, the first preset time point can be a preset time sequence, which is used to mark the time when the preloading load needs to be recorded during the preloading process. These time points can be evenly distributed, for example, recorded once every certain period of time.

[0107] The first timestamp can be a timestamp of the current system time at each first preset time point. The timestamp records the exact moment of data collection for subsequent data analysis and processing.

[0108] The first preload change rate may be the preload change rate at each first preset time point. The change rate may be calculated by comparing the current preload with the preload at the previous time point. Specifically, the following formula may be used for calculation:

[0109]

[0110] The second preset time point can be a preset time sequence for recording the change of the preload of the second region of the stent. These time points can be the same as or different from the first preset time point.

[0111] The second timestamp can also obtain the timestamp of the current system time at each second preset time point. These timestamps mark the real-time data collection moment of the preload of the second area of ​​the bracket.

[0112] The second preload change rate may be the preload change rate at each second preset time point. Specifically, it may be calculated using the following formula:

[0113]

[0114] The process of setting preset time points includes determining the number of first and second preset time points and the intervals between them. These time points are set based on actual needs and preloading strategies, and should be frequent enough to capture the changing trends of the stent preloading load. The first and second preset time points can be determined based on engineering design requirements or monitoring needs to ensure that deformation and load changes of the stent structure can be effectively recorded and monitored during the preloading process.

[0115] At each preset time point, the system acquires a timestamp of the current system time and records the current support preload value. The timestamp records the exact moment of data acquisition, while the preload value indicates the magnitude of the preload applied to the support at that moment. The rate of change of the preload is then calculated for each preload value recorded at each time point. This calculation is performed by comparing the preload at the current time point with the preload at the previous time point.

[0116] The first future preload trend represents the predicted change in the preload in the first region of the stent over time. A positive rate of change indicates a gradual increase in the preload in the first region of the stent; a negative rate of change indicates a gradual decrease. The timestamp defines the starting point, while the rate of change determines the amount of load change per time unit, thereby defining the predicted load trend.

[0117] The second future preload change trend describes the predicted change in the preload in the second region of the stent over time. Based on the second timestamp and the second preload change rate, the future increase or decrease trend in the preload in the second region of the stent can be predicted. Similar to the first region, the timestamp defines the starting point, while the rate of change determines the amount of load change per time unit.

[0118] Based on the first timestamp and the first preload change rate, the future preload change trend of the first area of ​​the bracket can be predicted. The timestamp determines the starting point, and the change rate determines the amount of change in the load within each time unit. By accumulating these changes, the load changes in the same time unit in the future can be predicted. For example, if the first preload change rate is a positive number, the preload in the first area of ​​the bracket will gradually increase; if the change rate is a negative number, the preload will gradually decrease. Similarly, using the second timestamp and the second preload change rate, the future preload change trend of the second area of ​​the bracket can be predicted. The prediction process for the second area is similar to that of the first area. According to different combinations of timestamps and change rates, the increase and decrease trends of the preload can be determined.

[0119] By analyzing the first and second future preload trends, you can understand the expected direction and rate of change in the preload over time. If the forecast indicates a significant increase in the preload in either the first or second region, you may want to consider increasing the current preload to ensure the support maintains structural stability and safety despite future load changes. Conversely, if the forecast indicates a decrease in the preload, you may want to gradually reduce the current preload to avoid unnecessary waste of resources or over-prestressing the support structure.

[0120] In this solution, by real-time monitoring and analysis of the changing trend of the preload, the preload strategy of the bracket can be adjusted in a timely manner to ensure that the bracket is always in a safe preload state during operation, which can effectively prevent structural damage caused by load changes.

[0121] Based on the above technical solution, optionally, the preloading strategy adjustment module is further configured to:

[0122] Determining a third preload corresponding to each third preset time point in the first future preload variation trend, and determining a fourth preload corresponding to each fourth preset time point in the second future preload variation trend;

[0123] Obtaining stent design information, and calculating, based on the stent design information, the third preload, the fourth preload, and a preset settlement calculation formula, a third settlement of the first region of the stent corresponding to each third preset time point, and calculating a fourth settlement of the second region of the stent corresponding to each fourth preset time point;

[0124] Determine a first future settlement change trend of the first region of the bracket according to the third settlement amount, and determine a second future settlement change trend of the second region of the bracket according to the fourth settlement amount;

[0125] A stent preload adjustment strategy is determined according to the first future settlement change trend and the second future settlement change trend.

[0126] In this solution, the third preset time point may be a preset time point in the first future preload change trend, which is used to monitor and adjust the preload and may be the same as or different from the first preset time point.

[0127] The third pre-compression load is a pre-compression force or load applied to the bracket at a third preset time point.

[0128] The fourth preset time point may be a preset time point in the second future preload change trend, and may be the same as or different from the second preset time point.

[0129] The fourth pre-compression load may be a pre-compression force or load applied to the stent at a fourth preset time point.

[0130] Bracket design information may include bracket geometric parameters (such as size and shape), material properties (such as strength and elastic modulus), load requirements (such as preload and maximum load capacity), etc. This information is the basic data required to calculate bracket preload and settlement.

[0131] The stent design information can be obtained from a database, and based on the preset third and fourth preloads and the preset settlement calculation formula, the third settlement of the first region of the stent corresponding to each third preset time point, and the fourth settlement of the second region of the stent corresponding to each fourth preset time point, can be calculated. These calculations estimate the settlement of the stent within a predetermined time period based on the elastic properties of the stent material and the applied preload. Subsequently, the first future settlement trend of the stent's first region is determined based on the third settlement, and the second future settlement trend of the stent's second region is determined based on the fourth settlement. These trends reflect the expected settlement of the stent under the preload and are key indicators for predicting stent performance and requiring adjustments. Finally, a stent preload adjustment strategy is formulated based on the first and second future settlement trends. For example, if the predicted settlement exceeds the design requirements, it may be necessary to adjust the preload or the preload time point to ensure that the stent meets the design performance requirements during use.

[0132] In this solution, by calculating and predicting the settlement change trends corresponding to the third and fourth preset time points, it is possible to understand in advance the settlement conditions that the bracket may encounter in actual use, so as to take necessary adjustment measures.

[0133] Based on the above technical solution, optionally, the preloading strategy adjustment module is further configured to:

[0134] Determining whether there is a third preset time point in the first future settlement amount change trend at which a preset settlement amount threshold is exceeded, and determining whether there is a fourth preset time point in the second future settlement amount change trend at which a preset settlement amount threshold is exceeded;

[0135] If the third preset time point and / or the fourth preset time point exist, determining the time period corresponding to the third preset time point and / or the fourth preset time point;

[0136] If the time period is a short time period, the fifth preload that needs to be reduced in the first area of ​​the stent and / or the sixth preload that needs to be reduced in the second area of ​​the stent are calculated based on the stent design information, the third settlement and / or the fourth settlement corresponding to the third preset time point and / or the fourth preset time point, the preset settlement threshold, and the preset settlement calculation formula;

[0137] A stent preload adjustment strategy is determined according to the fifth preload and / or the sixth preload.

[0138] In this solution, a time period can be a segment or interval of time, used to demarcate the time span between different stages or events. Specifically, it can include both short and long time periods. A time node can be preset, with events before this node representing a short time period and events after this node representing a long time period.

[0139] The short time period may be a relatively short period of time. For example, the periods within which all preset time points within 4 days are located are all short time periods.

[0140] A long period of time refers to a longer period of time. For example, the period within which all preset time points fall within 4 days is a long period of time.

[0141] The preset settlement threshold can be a settlement limit value pre-set during engineering design or prediction. When the actual settlement of the support reaches or exceeds this threshold, appropriate measures need to be taken to adjust the support structure or preloading strategy to ensure the safety and stability of the structure.

[0142] The fifth pre-compression load may refer to a pre-compression load of the first region of the stent that needs to be reduced within a short period of time to cope with abnormal settlement or situations where the settlement exceeds a threshold.

[0143] The sixth pre-compression load may refer to the pre-compression load of the second region of the stent that needs to be reduced within a short period of time, and is also used to cope with abnormal settlement or situations where the settlement exceeds a threshold.

[0144] The first trend of future settlement changes can be checked to find out whether the settlement at the third preset time point exceeds the preset settlement threshold. The second trend of future settlement changes can be checked to find out whether the settlement at the fourth preset time point exceeds the preset settlement threshold. Determine the time period in which these exceeded third preset time points and / or fourth preset time points are located. The time period is divided into short time periods and long time periods, which are usually used to distinguish between near-term future data and data from a longer period in the future. If these exceeded time points are in a short time period, the preload that needs to be reduced is calculated based on the support design information, the settlement at the time point, the preset settlement threshold, and the preset settlement calculation formula. The exceeded settlement at the third preset time point corresponds to the fifth preload that needs to be reduced in the first area of ​​the support. The exceeded settlement at the fourth preset time point corresponds to the sixth preload that needs to be reduced in the second area of ​​the support. Based on the calculated fifth preload and / or sixth preload, the specific preload adjustment amount is determined. If the fifth preload needs to be reduced in the first region of the stent, the preload is gradually reduced during the subsequent preloading process until the new target load is reached. Similarly, if the sixth preload needs to be reduced in the second region of the stent, the preload is gradually reduced during the subsequent preloading process until the new target load is reached. The fifth and / or sixth preloads are combined into a stent preload adjustment strategy.

[0145] This solution ensures a more precise preloading process by monitoring and adjusting the preloading load in real time, based on specific settlement trends, and avoiding over- or underloading. It also effectively controls settlement in various regions of the support, maintaining overall stability and minimizing structural damage caused by uneven settlement.

[0146] Based on the above technical solution, optionally, the preloading strategy adjustment module is further configured to:

[0147] If the time period is a long time period, obtain the first historical settlement change amount of each period of the first area of ​​the bracket and the second historical settlement change amount of each period of the second area of ​​the bracket, and determine the first number of periods that the first area of ​​the bracket needs to be extended and / or the second number of periods that the second area of ​​the bracket needs to be extended based on the first historical settlement change amount, the second historical settlement change amount, the third settlement amount and / or the fourth settlement amount corresponding to the third preset time point and / or the fourth preset time point, and the preset settlement amount threshold;

[0148] A stent preload adjustment strategy is determined according to the first cycle number and the second cycle number.

[0149] In this embodiment, the first historical settlement change can be the settlement change of the first region of the support within each historical period. By recording historical data, the settlement of the first region of the support within different periods can be understood. Short-term and long-term periods can have multiple periods, for example, a short-term period can have four sub-periods, and a long-term period can have eight sub-periods. Therefore, each period can correspond to a different historical settlement change.

[0150] The second historical settlement change amount can be the settlement change amount of the second area of ​​the bracket in each historical period. Similarly, the settlement conditions of the second area of ​​the bracket in different periods can be understood through the historical data records.

[0151] The first number of cycles can be calculated based on the first historical settlement change, the third settlement at the third preset time point, and the preset settlement threshold to determine the number of cycles required to extend the first region of the stent. This ensures that settlement in the first region of the stent returns to a safe range within the extended period. For example, if eight sub-cycles are originally expected to complete a task over a long period, but calculations indicate that two sub-cycles are required, the first number of cycles would be two.

[0152] The second period number may be calculated based on the second historical settlement change, the fourth settlement amount corresponding to the fourth preset time point, and the preset settlement threshold, to calculate the number of periods for which the second region of the stent needs to be extended. This is also to ensure that the settlement amount of the second region of the stent can be restored to a safe range within the extended period.

[0153] The historical settlement changes in the first area and the second area of ​​the bracket in each long period of time, that is, the first historical settlement change and the second historical settlement change, can be obtained. During the long period of time, the current settlement condition is evaluated based on the third settlement corresponding to the third preset time point and the fourth settlement corresponding to the fourth preset time point, combined with the preset settlement threshold. According to the first historical settlement change and the third settlement, the first cycle number that the first area of ​​the bracket needs to be extended is calculated. According to the second historical settlement change and the fourth settlement, the second cycle number that the second area of ​​the bracket needs to be extended is calculated. Combined with the calculated first cycle number and second cycle number, the specific bracket pre-stressing adjustment strategy is determined. This strategy will clarify the pre-stressing measures that need to be taken during the extended period to ensure that the settlement of each area of ​​the bracket returns to the safety threshold. Specifically, the following formula can be used for calculation:

[0154]

[0155] For example, the third settlement amount is 12 mm, the preset settlement threshold is 10 mm, and the first historical settlement change is 0.5 mm. The settlement amount exceeding the preset settlement threshold is 2 mm, and the number of cycles to be extended is 4 cycles.

[0156] In this solution, by analyzing historical settlement changes and current settlement data, we can accurately calculate the number of extension cycles required, thereby developing a more accurate preload adjustment strategy, ensuring the effectiveness of preload adjustments and improving support stability. Combining historical data with future settlement trends allows us to predict possible settlement risks in advance and take appropriate measures to avoid safety hazards caused by excessive support settlement.

[0157] On the basis of the above technical solution, optionally, the preset settlement calculation formula is:

[0158]

[0159] Among them, δ is the third settlement or the fourth settlement; P is the third preload or the fourth preload; L is the length of the first area of ​​the bracket or the length of the second area of ​​the bracket; E is the elastic modulus of the material of the first area of ​​the bracket or the elastic modulus of the material of the second area of ​​the bracket; I is the moment of inertia of the cross section of the first area of ​​the bracket or the moment of inertia of the cross section of the second area of ​​the bracket.

[0160] In this solution, the length can be the measurement of the first or second region of the bracket along its main axis and can be clearly marked in meters or millimeters on the design drawing. For example, if the first region of a bracket extends 5 meters from the starting point of the bracket, the length is 5 meters.

[0161] The elastic modulus is a physical quantity that describes a material's ability to strain when subjected to a force. For example, the elastic modulus of steel is typically 210 GPa.

[0162] The moment of inertia of a section is a geometric property of a section that describes its ability to resist bending across its cross section. It is expressed in meters to the fourth power.

[0163] The length of the first area of ​​the bracket, the length of the second area of ​​the bracket, the elastic modulus of the material of the first area of ​​the bracket, the elastic modulus of the material of the second area of ​​the bracket, the moment of inertia of the cross section of the first area of ​​the bracket, and the moment of inertia of the cross section of the second area of ​​the bracket can be obtained from the bracket design information. Specifically, the length markings of the first area and the second area of ​​the bracket can be directly read from the design drawing. The lengths are usually marked between the various parts of the bracket and appear in the form of clear numerical values. Look for the elastic modulus of the material used in the corresponding area in the design instructions or material specifications. The elastic modulus will be clearly marked in the material description section. Find the cross-sectional shape and size of each area of ​​the bracket, use the corresponding formula or directly look for the moment of inertia value in the design calculation book. There is a steel bracket. The length L of the first area of ​​the bracket is 10 meters, the elastic modulus E of the material is 200GPa, and the moment of inertia of the section is 4.5×10 -4 m^4, then

[0164]

[0165] When calculating the reduced fifth preload and / or the required reduction in the sixth preload for the second region of the stent, if the preset settlement threshold is 10 mm, the third settlement is 15 mm, the elastic modulus E is 200 GPa, the moment of inertia of the area is 500 cm^4, and the length of the first region of the stent is 2 m, then the third settlement exceeds the threshold by 5 mm. Accordingly:

[0166]

[0167] That is, the fifth preload that needs to be reduced is 7500N.

[0168] Example 3

[0169] Figure 1 This is a schematic diagram of the structure of the intelligent monitoring device for the pre-pressing process of the road construction support provided in the third embodiment of the present application. Figure 1 As shown, specifically including the following:

[0170] The training process of the preset regulation prediction model includes:

[0171] Obtain historical stent preload adjustment records, and determine historical short-term adjustment records and historical long-term adjustment records based on the historical stent preload adjustment records;

[0172] Determine, based on the historical short-time period adjustment records, a first historical load change trend, a first historical preload, a first historical preset time point, a corresponding first historical preload change rate, a first historical settlement, a first historical settlement change trend, and a first historical preload adjustment value of a first area of ​​the bracket, and determine a second historical load change trend, a second historical preload, a second historical preset time point, a corresponding second historical preload change rate, a second historical settlement, a second historical settlement change trend, and a second historical preload adjustment value of a second area of ​​the bracket;

[0173] Determine the third historical load change trend, the third historical preload, the third historical preset time point, the corresponding third historical preload change rate, the third historical settlement, the third historical settlement change trend, the first historical settlement change, and the first historical cycle number adjustment value of the first area of ​​the bracket based on the historical long-term period adjustment record, and determine the fourth historical load change trend, the fourth historical preload, the fourth historical preset time point, the corresponding fourth historical preload change rate, the fourth historical settlement, the fourth historical settlement change trend, the second historical settlement change, and the second historical preload adjustment value of the second area of ​​the bracket;

[0174] Creating a first data set based on historical short-term time period adjustment records, and creating a second data set based on historical long-term time period adjustment records;

[0175] A regulation prediction model is constructed and trained according to the stent design information, the first data set, and the second data set until the regulation prediction model meets a preset model determination criterion.

[0176] In this embodiment, the historical support preload adjustment record may be data recording all past adjustments to the support preload, including the time of adjustment, the specific load value of the adjustment, and the settlement measured after the adjustment.

[0177] The historical short-term adjustment record may be a record of the adjustment of the support preload within a short period of time.

[0178] The historical long-term adjustment record may be a record of the adjustment of the support preload over a long period of time.

[0179] The first historical load variation trend may be historical data of how the preload of the first region of the bracket changes over time within a short period of time.

[0180] The first historical pre-compression load may be a pre-compression load value applied at a specific first historical preset time point.

[0181] The first historical preset time point may be a specific time point within a short time period, which is used to record and analyze the adjustment of the preload.

[0182] The first historical preload change rate may be a rate of change of the preload at a specific first historical preset time point.

[0183] The first historical settlement amount may be the settlement amount of the first region of the stent measured at a specific first historical preset time point.

[0184] The first historical settlement change trend may be historical data of the settlement change of the first region of the bracket over time within a short period of time.

[0185] The first historical preload adjustment value may be a preload that is applied or reduced to adjust for the expected settlement.

[0186] The second historical load change trend, the second historical preload, the second historical preset time point, the corresponding second historical preload change rate, the second historical settlement, the second historical settlement change trend and the second historical preload adjustment value can be similar to the first historical data, but applicable to the second area of ​​the bracket.

[0187] The third historical load change trend may be historical data of how the preload of the first region of the bracket changes over time over a long period of time.

[0188] The third historical pre-compression load may be a pre-compression load value applied at a specific third historical preset time point.

[0189] The third historical preset time point may be a specific time point within a long period of time, and is used to record and analyze the adjustment of the preload.

[0190] The third historical preload change rate may be a rate of change of the preload at a specific third historical preset time point.

[0191] The third historical settlement amount may be the settlement amount of the first region of the stent measured at a specific third historical preset time point.

[0192] The third historical settlement change trend may be historical data of the settlement change of the first region of the bracket over a long period of time.

[0193] The first historical settlement change may be a settlement change value of the first region of the bracket over a long period of time.

[0194] The first historical cycle number adjustment value may be a value for adjusting the number of pre-compression cycles in the first region of the stent based on historical data.

[0195] The fourth historical load change trend, the fourth historical preload, the fourth historical preset time point, the corresponding fourth historical preload change rate, the fourth historical settlement, the fourth historical settlement change trend, the second historical settlement change and the second historical preload adjustment value can be similar to the third historical data, but applicable to the second area of ​​the bracket.

[0196] The first data set may include historical short-term adjustment records, and data related to the first and second regions of the bracket.

[0197] The second data set may include historical long-term period adjustment records, and data related to the first and second regions of the bracket.

[0198] The preset model judgment criteria can be the performance criteria of the control prediction model, such as accuracy, precision, recall rate, mean square error, etc., which are used to evaluate whether the model has achieved the expected performance.

[0199] Historical support preload adjustment records can be obtained and divided into two categories: short-term and long-term periods. For short-term records, the first historical load change trend, first historical preload, first historical preset time point, first historical preload change rate, first historical settlement, first historical settlement change trend, and first historical preload adjustment value of the first area of ​​the support are extracted, as well as the second historical load change trend, second historical preload, second historical preset time point, second historical preload change rate, second historical settlement, second historical settlement change trend, and second historical preload adjustment value of the second area of ​​the support are extracted. For long-term records, the third historical load change trend, third historical preload, third historical preset time point, third historical preload change rate, third historical settlement, third historical settlement change trend, first historical settlement change, and first historical cycle number adjustment value of the first area of ​​the bracket are extracted, as well as the fourth historical load change trend, fourth historical preload, fourth historical preset time point, fourth historical preload change rate, fourth historical settlement, fourth historical settlement change trend, second historical settlement change, and second historical cycle number adjustment value of the second area of ​​the bracket. Then, based on these extracted data, a first data set for a short time period and a second data set for a long time period are created respectively. Finally, a control prediction model is trained based on the bracket design information, the first data set, and the second data set until the control prediction model meets the preset model judgment standard.

[0200] In this example, analysis and adjustments based on big data and historical records improve the scientific nature and reliability of decision-making and reduce the subjectivity and errors of human decision-making. By continuously training and optimizing the control and prediction model, the accuracy and reliability of the model can be continuously improved to adapt to different environments and changing conditions.

[0201] Example 4

[0202] Figure 2 : This is a flow chart of an intelligent monitoring method for the pre-pressing process of a road construction support provided in Example 4 of the present application. The method includes:

[0203] S201, pre-stress the first area of ​​the bracket and the second area of ​​the bracket according to the preset pre-stressing strategy, obtain the first pre-stressing load change trend of the first area of ​​the bracket and the second pre-stressing load change trend of the second area of ​​the bracket, and determine whether the pre-stressing strategy needs to be adjusted according to the first pre-stressing load change trend, the second pre-stressing load change trend, the preset first pre-stressing load change rate threshold and the preset second pre-stressing load change rate threshold.

[0204] S202: If the preloading strategy needs to be adjusted, the first preloading load variation trend and the second preloading load variation trend are input into a preset control prediction model to determine the stent preloading adjustment strategy.

[0205] S203: Adjust the pre-compression of the first region and the second region of the stent according to the stent pre-compression adjustment strategy.

[0206] S204, obtaining the first pre-compression load of the first area of ​​the bracket and the second pre-compression load of the second area of ​​the bracket in real time, stopping the pre-compression work on the first area of ​​the bracket when the first pre-compression load reaches the preset first load level, and stopping the pre-compression work on the second area of ​​the bracket when the second pre-compression load reaches the preset second load level.

[0207] S205: Acquire the current system timestamp in real time, and determine whether a preset settlement amount collection time interval has been reached according to the current system timestamp and the preloading stop timestamp.

[0208] S206: If the preset settlement collection time interval is reached, the first settlement of the first area of ​​the bracket and the second settlement of the second area of ​​the bracket are collected. If the first settlement and / or the second settlement exceeds the preset settlement threshold, an alarm message is sent to the control center.

[0209] In an embodiment of the present application, the first area of ​​the bracket and the second area of ​​the bracket are pre-stressed according to a preset pre-stressing strategy, and a first pre-stressing load change trend of the first area of ​​the bracket and a second pre-stressing load change trend of the second area of ​​the bracket are obtained. According to the first pre-stressing load change trend, the second pre-stressing load change trend, the preset first pre-stressing load change rate threshold and the preset second pre-stressing load change rate threshold, it is determined whether the pre-stressing strategy needs to be adjusted; if the pre-stressing strategy needs to be adjusted, the first pre-stressing load change trend and the second pre-stressing load change trend are input into a preset control prediction model to determine the bracket pre-stressing adjustment strategy; the pre-stressing of the first area of ​​the bracket and the second area of ​​the bracket are adjusted according to the bracket pre-stressing adjustment strategy; and real-time acquisition is performed. The first preloading load of the first area of ​​the support and the second preloading load of the second area of ​​the support are stopped when the first preloading load reaches the preset first load level, and the preloading work of the second area of ​​the support is stopped when the second preloading load reaches the preset second load level; the current system timestamp is obtained in real time, and whether the preset settlement collection time interval has been reached is determined based on the current system timestamp and the stop preloading timestamp; if the preset settlement collection time interval has been reached, the first settlement of the first area of ​​the support and the second settlement of the second area of ​​the support are collected, and if the first settlement and / or the second settlement exceed the preset settlement threshold, an alarm message is sent to the control center. Through the above-mentioned intelligent monitoring method for the preloading process of the road construction support, the preloading load change trend is monitored in real time, and the preloading strategy can be quickly responded and adjusted to avoid damage to the support caused by uneven load, thereby improving the safety of preloading. It also improves the preloading efficiency, reduces human intervention, and reduces the workload of operators.

[0210] The above are only preferred embodiments of the present application and the technical principles employed. The present application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions that are possible for those skilled in the art will not depart from the scope of protection of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments and may include more other equivalent embodiments without departing from the concept of the present application. The scope of the present application is determined by the scope of the claims.

[0211] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0212] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0213] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

[0214] The above are only preferred embodiments of the present application and the technical principles employed. The present application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions that are possible for those skilled in the art will not depart from the scope of protection of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments and may include more other equivalent embodiments without departing from the concept of the present application. The scope of the present application is determined by the scope of the claims.

Claims

1. An intelligent monitoring device for the preloading process of a road construction support, characterized in that: The device comprises: a preload change trend determination module, configured to perform preload on the first region of the stent and the second region of the stent according to a preset preload strategy, obtain a first preload change trend of the first region of the stent and a second preload change trend of the second region of the stent, and determine whether the preload strategy needs to be adjusted based on the first preload change trend, the second preload change trend, a preset first preload change rate threshold, and a preset second preload change rate threshold; a preloading strategy adjustment module, configured to input the first preloading load variation trend and the second preloading load variation trend into a preset control prediction model to determine the stent preloading adjustment strategy if the preloading strategy needs to be adjusted; A pre-compression adjustment module, configured to adjust the pre-compression of the first region of the stent and the second region of the stent according to the stent pre-compression adjustment strategy; a pre-compression monitoring module, configured to obtain in real time a first pre-compression load of a first region of the stent and a second pre-compression load of a second region of the stent, and to stop pre-compression operation on the first region of the stent when the first pre-compression load reaches a preset first load level, and to stop pre-compression operation on the second region of the stent when the second pre-compression load reaches a preset second load level; A timestamp acquisition module is used to obtain the current system timestamp in real time, and determine whether a preset settlement amount collection time interval has been reached based on the current system timestamp and the preloading stop timestamp; The early warning module is used to collect the first settlement of the first area of ​​the bracket and the second settlement of the second area of ​​the bracket if the preset settlement collection time interval is reached. If the first settlement and / or second settlement exceeds the preset settlement threshold, an alarm message is sent to the control center.

2. The intelligent monitoring device for the preloading process of a road construction support according to claim 1 is characterized in that: The device further comprises a cyclic pre-pressing module, which is used to: If the first settlement amount and the second settlement amount do not exceed the preset settlement amount threshold, the first area of ​​the bracket and the second area of ​​the bracket are pre-stressed step by step, and the first pre-stressing load and the second pre-stressing load are continuously obtained and updated. When the updated first pre-stressing load and the second pre-stressing load reach the corresponding level, the pre-stressing is stopped, and the first settlement amount of the first area of ​​the bracket and the second settlement amount of the second area of ​​the bracket are obtained each time the preset settlement amount collection time interval is reached. If the first settlement amount and the second settlement amount do not exceed the preset settlement amount threshold, the first area of ​​the bracket and the second area of ​​the bracket continue to be pre-stressed until the last level of bracket pre-stressing of the first area of ​​the bracket and the second area of ​​the bracket is completed.

3. The intelligent monitoring device for the preloading process of a road construction support according to claim 1 is characterized in that: The preloading strategy adjustment module is used to: Determining a first timestamp of each first preset time point of the first preload change trend and a corresponding first preload change rate, and determining a second timestamp of each second preset time point of the second preload change trend and a corresponding second preload change rate; Determining a first future preload change trend of the first region of the stent and a second future preload change trend of the second region of the stent according to the first timestamp, the first preload change rate, the second timestamp, and the second preload change rate; The bracket preload adjustment strategy is determined according to the first future preload change trend and the second future preload change trend.

4. The intelligent monitoring device for the preloading process of a road construction support according to claim 3 is characterized in that: The preloading strategy adjustment module is further configured to: Determining a third preload corresponding to each third preset time point in the first future preload variation trend, and determining a fourth preload corresponding to each fourth preset time point in the second future preload variation trend; Obtaining stent design information, and calculating, based on the stent design information, the third preload, the fourth preload, and a preset settlement calculation formula, a third settlement of the first region of the stent corresponding to each third preset time point, and calculating a fourth settlement of the second region of the stent corresponding to each fourth preset time point; Determine a first future settlement change trend of the first region of the bracket according to the third settlement amount, and determine a second future settlement change trend of the second region of the bracket according to the fourth settlement amount; A stent preload adjustment strategy is determined according to the first future settlement change trend and the second future settlement change trend.

5. The intelligent monitoring device for the preloading process of a road construction support according to claim 4 is characterized in that: The preloading strategy adjustment module is further configured to: Determining whether there is a third preset time point in the first future settlement amount change trend at which a preset settlement amount threshold is exceeded, and determining whether there is a fourth preset time point in the second future settlement amount change trend at which a preset settlement amount threshold is exceeded; If the third preset time point and / or the fourth preset time point exist, determining the time period corresponding to the third preset time point and / or the fourth preset time point; If the time period is a short time period, the fifth preload that needs to be reduced in the first area of ​​the stent and / or the sixth preload that needs to be reduced in the second area of ​​the stent are calculated based on the stent design information, the third settlement and / or the fourth settlement corresponding to the third preset time point and / or the fourth preset time point, the preset settlement threshold, and the preset settlement calculation formula; A stent preload adjustment strategy is determined according to the fifth preload and / or the sixth preload.

6. The intelligent monitoring device for the preloading process of a road construction support according to claim 5 is characterized in that: The preloading strategy adjustment module is further configured to: If the time period is a long time period, obtain the first historical settlement change amount of each period of the first area of ​​the bracket and the second historical settlement change amount of each period of the second area of ​​the bracket, and determine the first number of periods that the first area of ​​the bracket needs to be extended and / or the second number of periods that the second area of ​​the bracket needs to be extended based on the first historical settlement change amount, the second historical settlement change amount, the third settlement amount and / or the fourth settlement amount corresponding to the third preset time point and / or the fourth preset time point, and the preset settlement amount threshold; A stent preload adjustment strategy is determined according to the first cycle number and the second cycle number.

7. The intelligent monitoring device for the preloading process of a road construction support according to claim 4 is characterized in that: The preset settlement calculation formula is: ； in, is the third settlement or the fourth settlement; P is the third preload or the fourth preload; L is the length of the first area of ​​the bracket or the length of the second area of ​​the bracket; E is the elastic modulus of the material of the first area of ​​the bracket or the elastic modulus of the material of the second area of ​​the bracket; I is the moment of inertia of the cross section of the first area of ​​the bracket or the moment of inertia of the cross section of the second area of ​​the bracket.

8. The intelligent monitoring device for the preloading process of a road construction support according to claim 1 is characterized in that: The preload change trend determination module is used to: The crane is controlled to pre-press the first area of ​​the bracket according to a preset pre-pressing strategy, and the water pump is controlled to pre-press the second area of ​​the bracket according to the preset pre-pressing strategy.

9. The intelligent monitoring device for the preloading process of a road construction support according to claim 6, characterized in that: The training process of the preset regulation prediction model includes: Obtain historical stent preload adjustment records, and determine historical short-term adjustment records and historical long-term adjustment records based on the historical stent preload adjustment records; Determine, based on the historical short-time period adjustment records, a first historical load change trend, a first historical preload, a first historical preset time point, a corresponding first historical preload change rate, a first historical settlement, a first historical settlement change trend, and a first historical preload adjustment value of a first area of ​​the bracket, and determine a second historical load change trend, a second historical preload, a second historical preset time point, a corresponding second historical preload change rate, a second historical settlement, a second historical settlement change trend, and a second historical preload adjustment value of a second area of ​​the bracket; Determine the third historical load change trend, the third historical preload, the third historical preset time point, the corresponding third historical preload change rate, the third historical settlement, the third historical settlement change trend, the first historical settlement change, and the first historical cycle number adjustment value of the first area of ​​the bracket based on the historical long-term period adjustment record, and determine the fourth historical load change trend, the fourth historical preload, the fourth historical preset time point, the corresponding fourth historical preload change rate, the fourth historical settlement, the fourth historical settlement change trend, the second historical settlement change, and the second historical preload adjustment value of the second area of ​​the bracket; Creating a first data set based on historical short-term time period adjustment records, and creating a second data set based on historical long-term time period adjustment records; A regulation prediction model is constructed and trained according to the stent design information, the first data set, and the second data set until the regulation prediction model meets a preset model determination criterion.

10. An intelligent monitoring method for the preloading process of a road construction support, characterized in that: The method comprises: Preloading the first region and the second region of the stent according to a preset preloading strategy, obtaining a first preloading load change trend of the first region of the stent and a second preloading load change trend of the second region of the stent, and determining whether the preloading strategy needs to be adjusted according to the first preloading load change trend, the second preloading load change trend, a preset first preloading load change rate threshold, and a preset second preloading load change rate threshold; If the preloading strategy needs to be adjusted, the first preloading load variation trend and the second preloading load variation trend are input into a preset control prediction model to determine the stent preloading adjustment strategy; Adjusting the pre-compression of the first region and the second region of the stent according to the stent pre-compression adjustment strategy; acquiring in real time a first pre-compression load of a first region of the stent and a second pre-compression load of a second region of the stent, stopping the pre-compression operation on the first region of the stent when the first pre-compression load reaches a preset first load level, and stopping the pre-compression operation on the second region of the stent when the second pre-compression load reaches a preset second load level; Obtaining the current system timestamp in real time, and determining whether a preset settlement amount collection time interval has been reached based on the current system timestamp and the preloading stop timestamp; If the preset settlement collection time interval is reached, the first settlement of the first area of ​​the bracket and the second settlement of the second area of ​​the bracket are collected. If the first settlement and / or second settlement exceeds the preset settlement threshold, an alarm message is sent to the control center.

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