Section steel combination inner support stability monitoring and calibrating device and monitoring method

Abstract

The invention discloses a profile steel combination inner support stability monitoring and calibrating device and a monitoring method, and the device comprises a supporting system, a profile steel stand column (1), a profile steel #-shaped cross beam (2), a profile steel inclined strut (3), a profile steel diagonal bracing (4), a profile steel bracket piece (14), a lateral correction system and an axial correction system, the system comprises a pressurizing part (5), a lateral intelligent pressurizing system (6), a pressurizing system bracket (7), a steel support standard part (8) and an axial intelligent pressurizing system (9), and an intelligent terminal control system which comprises a laser target (10), a laser monitor (11), an intelligent oil source pump station (12) and a monitoring host (13). According to the device, detachable modular design is adopted, rapid assembly and reuse of the device are achieved, and the risk of foundation pit deformation is reduced and collapse accidents are avoided by monitoring and correcting deformation deviation of steel support standard parts caused by outer side soil body pressure in the earthwork excavation and foundation construction stages.

Description

Technical Field

[0001] This invention belongs to the field of deep foundation pit support monitoring, and more specifically, relates to a stability monitoring and calibration device and monitoring method for steel composite internal supports. Background Technology

[0002] Deep foundation pit support technology is widely used in the construction of infrastructure such as high-rise buildings, subway stations, and underground tunnels. With the acceleration of urbanization and the continuous increase in building density and height, the scale of deep foundation pit projects is expanding. The safety, economy, and environmental adaptability of their support structures have become core issues in engineering design and construction.

[0003] Traditional methods for monitoring foundation pits mainly rely on manual measurement and periodic inspections. Manual measurement typically uses conventional measuring instruments such as total stations and levels, with professionals conducting on-site measurements at regular intervals. This method has several limitations. First, manual measurement is limited by human vision and operational precision, easily leading to reading errors and making it difficult to guarantee the accuracy of monitoring data. Although monitoring technology has made significant progress, there are still some problems to be solved in the field of deep foundation pit support structure displacement monitoring. For example, patent document CN202520809013.7 discloses a deep foundation pit support structure displacement monitoring device, including a control module. The control module is equipped with a graded alarm component for graded alarms. The graded alarm component is arranged in four groups, located on the four side walls of the control module. Each of the four groups of graded alarm components is equipped with a quick-installation component for rapid assembly and disassembly.

[0004] However, the patent document CN202520809013.7 still has the following technical problems: (1) Traditional methods rely on manual measurement using equipment such as total stations and levels, which is easily affected by operator visual errors and environmental interference (such as nighttime and rainy / foggy weather), resulting in fluctuations in data accuracy. At the same time, the frequency of manual measurement is low (usually once a day), making it difficult to capture sudden deformations (such as rapid soil slippage after heavy rain), and the data feedback is delayed, failing to meet the real-time early warning requirements for dynamic deformation of deep foundation pits. For example, the critical change of horizontal displacement at the top of the slope may occur within a few hours, but manual monitoring is difficult to respond in time; (2) Existing monitoring focuses on a single parameter (such as displacement or settlement), lacking multi-source data collaborative analysis. For example, data such as support structure stress, groundwater level, and settlement of surrounding buildings are scattered and independent, making it impossible to correlate deformation causes (such as the correlation between sudden changes in soil pressure and rainfall). Although the graded alarm component of patent CN202520809013.7 improves the local response speed, it does not solve the problem of data silos, resulting in weak comprehensive risk assessment capabilities. In practice, more than 60% of foundation pit accidents are delayed in handling due to the failure to integrate environmental and structural data in a timely manner; (3) Traditional sensors (such as inclinometers and steel stress gauges) require pre-embedded pipelines and drilling, which is time-consuming to install and causes great interference to construction. For example, inclinometer tubes need to be inserted deep into the support structure, and the installation accuracy requirements are high. The labor cost accounts for more than 40% of the total monitoring cost. In addition, high-end automated equipment (such as fiber optic sensing systems) is expensive and easily damaged during construction. Summary of the Invention

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this invention provides a steel composite internal support stability monitoring and calibration device and monitoring method. By optimizing the force path of the support system, the overall stability of the device is enhanced, thereby improving the safety and durability of the structure. Through the pressure output of the lateral correction system and the axial correction system, lateral repositioning and axial stress compensation of the steel support standard components are achieved. Monitoring through an intelligent terminal control system enables real-time monitoring and correction of the steel support standard components. The detachable modular design allows for rapid assembly and reuse of the device, improving the stability of the steel support and reducing the risk of foundation pit deformation.

[0006] To achieve the above objectives, according to a first aspect of the present invention, a stability monitoring and calibration device for internal supports of steel profiles is provided, comprising:

[0007] The support system includes steel columns and steel grid-shaped crossbeams respectively installed on the steel columns;

[0008] The lateral correction system located at the top of the support system includes steel support standard components respectively located on the steel grid-shaped crossbeam, pressure components respectively located on the steel support standard components, and pressure system brackets respectively located on the pressure components;

[0009] An axial correction system located at the top of the support system achieves lateral repositioning and axial stress compensation of the steel support standard component through the pressure output of the lateral correction system and the axial correction system.

[0010] An intelligent terminal control system is installed on the lateral correction system and the axial correction system. It includes an intelligent oil source pump station and a monitoring host. The intelligent terminal control system realizes real-time monitoring and correction of the steel support standard parts.

[0011] Furthermore, the support system includes steel diagonal braces installed on the steel column.

[0012] Furthermore, the support system includes steel scissor braces installed on the steel column.

[0013] Furthermore, the support system includes steel brackets mounted on the steel column.

[0014] Furthermore, the lateral correction system includes a lateral intelligent pressurization system mounted on the pressurization system bracket, which corrects the lateral displacement of the steel support standard component.

[0015] Furthermore, the axial correction system includes an axial intelligent pressurization system mounted on the pressurization system bracket, which corrects the axial displacement of the steel support standard component.

[0016] Furthermore, the intelligent terminal control system includes a laser monitoring instrument located on the ground above the steel support standard component.

[0017] Furthermore, the intelligent terminal control system also includes a laser target mounted on the steel support standard component.

[0018] Furthermore, the monitoring host has built-in data analysis software and an alarm module.

[0019] According to a second aspect of the present invention, a method for monitoring and calibrating the stability of internal supports in steel composite structures is provided, which is implemented using a device for monitoring and calibrating the stability of internal supports in steel composite structures, comprising:

[0020] S100: Completes data acquisition and real-time monitoring. After the monitoring and calibration device is assembled, the laser monitor is turned on to continuously scan the target position, collect relevant data on the axial and lateral displacement of the steel support standard component, and upload the data to the monitoring host through the wireless bridge. The data is stored in the form of time series and visualized according to the displacement-time curve.

[0021] S200: Analyzes data to prevent potential risks. The algorithm built into the monitoring host analyzes the displacement of the steel support standard components. If it is a short-term sudden change, it is necessary to determine whether it is an instantaneous displacement anomaly caused by a sudden load. If it is a long-term accumulation warning, it calculates the displacement rate and triggers a first-level warning after it continuously exceeds the set threshold.

[0022] S300: For anomalies occurring during short-term and long-term monitoring, corresponding correction commands are issued. During short-term and long-term monitoring, the monitoring host analyzes and judges the abnormal data. After an anomaly is determined, the monitoring host issues a corresponding correction command. The intelligent oil source pump station receives the command, adjusts the corresponding oil circuit pressure and flow, pushes the steel support standard component to reset through the lateral correction system, and compensates for the axial force loss of the steel support standard component through the axial correction system. After the first correction is completed, the latest data is obtained through the device. If the expected result is not achieved, the second correction is initiated, and the cycle continues until the target is met.

[0023] S400: Performs data archiving and system self-testing, generates daily monitoring reports, records displacement data, alarm events and correction records, and conducts regular system self-tests to check whether the wireless network signal strength, hydraulic system airtightness and laser monitor zero point meet the requirements.

[0024] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects:

[0025] 1. The device of the present invention optimizes the force path through the support system, thereby enhancing the overall stability of the device and improving the safety and durability of the structure. Through the pressure output of the lateral correction system and the axial correction system, the lateral reset of the steel support standard components and the compensation of axial stress are realized. Through the monitoring of the intelligent terminal control system, the steel support standard components are monitored and corrected in real time. The detachable modular design enables the rapid assembly and reuse of the device, improving the stability of the steel support and reducing the risk of foundation pit deformation.

[0026] 2. The device of the present invention uses high-strength bolts and welding process to stably build the support system. Scissor braces and diagonal braces are welded on the columns to optimize the force path, enhance the overall stability of the device, and thus improve the safety and durability of the structure.

[0027] 3. The device of the present invention has jacks installed inside the lateral intelligent pressurization system and the axial intelligent pressurization system. According to the commands transmitted by the monitoring host, the jacks apply corresponding pressure to the steel support standard component, thereby pushing the steel support standard component to lateral reset and compensating for axial force loss.

[0028] 4. The device of the present invention uses a laser monitoring instrument and a monitoring host to monitor and correct the deformation and displacement of the standard steel support components caused by the pressure of the outer soil during the earthwork excavation and foundation construction stages, thereby reducing the risk of foundation pit deformation and avoiding losses from collapse accidents. Attached Figure Description

[0029] Figure 1 This is a flowchart of the method for monitoring, calibrating, and controlling the stability of internal supports in steel composite structures according to an embodiment of the present invention.

[0030] Figure 2 This is a schematic diagram of the information flow of the monitoring host's built-in software in an embodiment of the present invention;

[0031] Figure 3 This is an isometric view of the steel composite internal support stability monitoring and calibration device according to an embodiment of the present invention;

[0032] Figure 4 This is a split plan view of the support system according to an embodiment of the present invention;

[0033] Figure 5 This is a split plan view of the lateral correction system according to an embodiment of the present invention;

[0034] Figure 6 This is a split plan view of the axial correction system according to an embodiment of the present invention;

[0035] Figure 7 This is a split plan view of the intelligent terminal control system according to an embodiment of the present invention.

[0036] In all the accompanying drawings, the same reference numerals indicate the same technical features, specifically: 1-steel column, 2-steel grid beam, 3-steel diagonal brace, 4-steel scissor brace, 5-pressurizing component, 6-lateral intelligent pressurizing system, 7-pressurizing system bracket, 8-steel support standard component, 9-axial intelligent pressurizing system, 10-laser target, 11-laser monitoring instrument, 12-intelligent oil source pump station, 13-monitoring host, 14-steel support component. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0038] like Figure 2-7As shown, this invention provides a device and method for monitoring and calibrating the stability of internal supports in steel composite structures. It includes a support system, a lateral correction system, an axial correction system, and an intelligent terminal control system. The lateral correction system and the axial correction system are installed on the support system and are controlled by the intelligent terminal control system. The support system includes steel columns 1, steel grid-shaped crossbeams 2, steel diagonal braces 3, steel scissor braces 4, and steel support members 14. The steel columns 1 serve as the support for the entire device. The steel columns 1 are fixed in place with controlled verticality and elevation. The steel grid-shaped crossbeams 2 are welded and fixed to the steel columns 1 at fixed positions. The steel diagonal brace 3 is welded to the steel column 1 at a certain angle. The steel scissor brace 4 is welded to two adjacent steel columns 1 on the same side of the device. The steel support 14 is fixed at the design elevation of the steel column 1. Then the steel grid beam 2 is fixed to the steel support 14. The steel diagonal brace 3 welded to the steel column 1 plays a role in optimizing the force path and enhancing the overall stability. The steel scissor brace 4 welded to the steel column 1 plays a role in enhancing the overall stability, sharing the load, improving the deformation resistance, and optimizing the structural force transmission path by utilizing the principle of triangular structure. The lateral correction system and axial correction system include a pressure-applying component 5, a lateral intelligent pressure-applying system 6, a pressure-applying system bracket 7, a steel support standard component 8, and an axial intelligent pressure-applying system 9. The steel support standard component 8 is placed horizontally on the steel grid-shaped crossbeam 2. The pressure-applying component 5 is installed on the steel support standard component 8 as required. Then, the pressure-applying system bracket 7 is installed, and the lateral intelligent pressure-applying system 6 and the axial intelligent pressure-applying system 9 are installed inside the pressure-applying system bracket 7. The intelligent oil source pump station 12 is connected to the lateral intelligent pressure-applying system 6 and the axial intelligent pressure-applying system 9 through high-pressure oil pipes. The intelligent oil source pump station 12 provides appropriate hydraulic pressure, the lateral intelligent pressure-applying system 6 provides lateral pressure on the steel support standard component 8, and the axial intelligent pressure-applying system 9 provides axial pressure on the steel support standard component 8. The intelligent terminal control system includes a displacement monitoring system, the intelligent oil source pump station 12, and a monitoring host 13. The displacement monitoring system is connected to the monitoring host 13 through a wireless bridge to realize the transmission of displacement data. The device of this invention optimizes the force path through the support system, thereby enhancing the overall stability of the device and improving the safety and durability of the structure. Through the pressure output of the lateral correction system and the axial correction system, it achieves lateral reset and axial stress compensation of the steel support standard components. Through the monitoring of the intelligent terminal control system, it realizes real-time monitoring and correction of the steel support standard components. The detachable modular design enables rapid assembly and reuse of the device, improving the stability of the steel support and reducing the risk of foundation pit deformation.

[0039] In the support system, such as Figure 3 , 4As shown, before constructing the support system, it is necessary to first conduct a survey to confirm the location of the support system at the construction site. The steel column 1 is moved to the survey position, its verticality and elevation are controlled, and then fixed. Subsequently, the steel support bracket 14 is fixed to the design elevation of the steel column 1 using high-strength bolts. The steel scissor brace 4 is welded to two adjacent steel columns 1 on the same side of the device. Through the triangular structure principle of the steel scissor brace 4, the overall stability is enhanced, the load is distributed, and the deformation resistance is improved. The steel diagonal brace 3 is welded to the steel column 1 at a certain angle. By optimizing the force path, it enhances the overall stability and distributes complex stresses, thereby improving the safety and durability of the structure. The steel grid-shaped beam 2 is fixed to the steel support bracket 14 using high-strength bolts. The device of this invention, through high-strength bolts and welding processes, stably constructs the support system. Welding scissor braces and diagonal braces to the columns optimizes the force path, enhancing the overall stability of the device and thus improving the safety and durability of the structure. The device of the present invention uses high-strength bolts and welding processes to stably build the support system. Scissor braces and diagonal braces are welded on the columns to optimize the force path, thereby enhancing the overall stability of the device and improving the safety and durability of the structure.

[0040] In lateral correction systems and axial correction systems, such as Figure 5 , 6 As shown, after the support system is completed, the steel support standard component 8 is placed horizontally on the steel grid-shaped crossbeam 2. The pressure-pressurizing component 5 is installed on the steel support standard component 8 as required and connected with high-strength bolts. Then, the pressure-pressurizing system bracket 7 is installed. Subsequently, the lateral intelligent pressure-pressurizing system 6 and the axial intelligent pressure-pressurizing system 9 are installed in the pressure-pressurizing system bracket 7. The intelligent oil source pump station 12 is connected to the lateral intelligent pressure-pressurizing system 6 and the axial intelligent pressure-pressurizing system 9 using high-pressure oil pipes. Through the monitoring host 13, the intelligent oil source pump station 12 generates corresponding hydraulic pressure to control the jacks in the intelligent pressure-pressurizing system 6 and the axial intelligent pressure-pressurizing system 9. The lateral jacks push the steel support standard component 8 to reset, and the axial jacks compensate for axial force loss. In the device of this invention, the lateral intelligent pressure-pressurizing system and the axial intelligent pressure-pressurizing system are equipped with jacks. According to the commands sent by the monitoring host, corresponding pressure is applied to the steel support standard component to push the lateral reset of the steel support standard component and compensate for axial force loss. The device of the present invention has jacks installed inside the lateral intelligent pressurization system and the axial intelligent pressurization system. According to the commands transmitted by the monitoring host, the jacks apply corresponding pressure to the steel support standard component, thereby pushing the steel support standard component to lateral reset and compensating for axial force loss.

[0041] The intelligent pressurization system is divided into a lateral intelligent pressurization system 6 and an axial intelligent pressurization system 9. The oil inlet and outlet ports on the intelligent oil source pump station 12 are connected to the oil distribution adapter via high-pressure colored oil pipes. The oil inlet and outlet ports on the jacks are connected to the oil distribution short connectors via high-pressure black rubber short-connecting oil pipes. For each oil pipe joint and oil distribution adapter (T-junction, cross-junction, etc.), the correct oil distribution adapter is selected according to the number of jacks available on site. If the number of jacks in each support is n, then the number of openings in a single oil distribution adapter is n+1.

[0042] In intelligent terminal control systems, such as Figure 7 As shown, the system includes a laser target 10, a laser monitor 11, an intelligent oil pump station 12, and a monitoring host 13. The laser monitor 11 is installed on a solid surface atop a steel support standard component 8, and the laser target 10 is installed at a suitable position on the steel support standard component 8, ensuring that the laser beam emitted by the laser monitor 11 is vertically projected onto the center of the laser target 10. The laser monitor 11 is then connected to the monitoring host 13 via a wireless bridge. The intelligent oil pump station 12 is connected to the lateral intelligent pressurization system 6 and the axial intelligent pressurization system 9 via high-pressure oil pipes. The monitoring host 13 has built-in data analysis software and an alarm module. The analysis software performs data analysis as follows: Figure 1 , 2 As shown, when the instantaneous displacement rate or cumulative displacement of the steel support standard component 8 is greater than or equal to the design threshold, an alarm is triggered and sent to the monitoring host 13. The device of this invention, according to requirements, installs a laser monitoring instrument and a laser target, calibrates the laser projection position, connects the laser monitoring instrument to the monitoring host, and connects the intelligent oil source pump station to the lateral intelligent pressurization system and the axial intelligent pressurization system via high-pressure oil pipes. By monitoring the axial and lateral displacements of the steel support standard component, the monitoring host algorithm generates correction commands, which are received by the lateral and axial intelligent pressurization systems and correction begins. The device of this invention, through the laser monitoring instrument and the monitoring host, monitors and corrects the deformation and displacement of the steel support standard component caused by external soil pressure during earthwork excavation and foundation construction, thereby reducing the risk of foundation pit deformation and avoiding losses from collapse accidents.

[0043] High-precision monitoring technology, featuring millimeter-level laser positioning and anti-interference capabilities, ensures the laser monitor 11 adapts to various construction site environments. Utilizing differential laser technology, it eliminates interference from environmental vibrations and dust. The laser target 10 has a reflective coating (reflectivity ≥90%) to ensure normal operation in low-light conditions. Multi-point cross-verification (e.g., three-point positioning method) avoids data distortion from single points.

[0044] The wireless communication network configuration includes a wireless router, wireless access point, wireless bridge, and wireless client. Connect the wireless bridge to the monitoring host computer using a standard network cable, and configure the main bridge and sub-bridges. The arc surfaces transmitting wireless signals from the main bridge and sub-bridges should face each other. Regardless of the distance between them, avoid obstructions from tall solid structures. Install the main bridge at a height of 3-5 meters above the ground to receive signals from multiple pump stations on site.

[0045] like Figure 1 As shown, in another embodiment of the present invention, a stability monitoring and calibration device and monitoring method for internal supports of steel profiles are provided, comprising the following steps:

[0046] After data collection and real-time monitoring are completed, the laser monitor is turned on after the monitoring and calibration device is assembled. It continuously scans the target position and collects relevant data on the axial and lateral displacements of the steel support standard component. The data is then uploaded to the monitoring host via a wireless bridge, stored in time series format, and visualized according to the displacement-time curve.

[0047] Data analysis is used to prevent potential risks. The algorithm built into the monitoring host analyzes the displacement trend of the steel support standard components. If it is a short-term sudden change detection, it is necessary to determine whether it is an instantaneous displacement anomaly caused by a sudden load (such as mechanical impact or rainstorm). If it is a long-term accumulation warning, the displacement rate is calculated. After continuously exceeding the set threshold, a first-level warning is triggered.

[0048] For any anomalies observed during short-term and long-term monitoring, corresponding correction commands are issued. During short-term and long-term monitoring, the monitoring host analyzes and judges the abnormal data. Once an anomaly is determined, the monitoring host issues a corresponding correction command. The intelligent oil source pump station receives the command, adjusts the corresponding oil circuit pressure and flow, pushes the steel support standard component to reset through the lateral correction system, and compensates for the axial force loss of the steel support standard component through the axial correction system. After the first correction is completed, the latest data is obtained through the device. If the expected result is not achieved, the second correction is initiated, and the cycle continues until the target is met.

[0049] Perform data archiving and system self-checks, generate daily monitoring reports, record displacement data, alarm events and correction records, and conduct regular system self-checks to ensure that wireless network signal strength, hydraulic system airtightness and laser monitor zero point meet requirements.

[0050] In summary, the device of the present invention adopts a detachable modular design, which enables rapid assembly and reuse of the device, improves the stability requirements of steel supports, and reduces the risk of foundation pit deformation.

[0051] In another embodiment of the present invention, an installation and monitoring method for a steel composite internal support stability monitoring and calibration device is provided, comprising the following steps:

[0052] Step 1: Pre-construction preparation and precision control benchmarks

[0053] (1) Based on the foundation pit design drawings, a BIM three-dimensional model was established to generate coordinate data of steel support axis, elevation control points and key nodes. Permanent benchmarks were set up on site (spacing ≤ 20m), and coordinate layout was carried out using a total station (accuracy 2″). The axis deviation was ≤ 2mm / 10m and the elevation error was ≤ 1.5mm.

[0054] (2) Before the steel components (H400×400×13×21 standard parts) arrive on site, the dimensional deviations (length ±2mm, hole spacing ±1mm) must be checked, and the welding bevels must conform to GB986 standards. Construction environment requirements: temperature 5–40℃, wind speed ≤5m / s, humidity ≤80%, high-altitude operations are prohibited in rainy or snowy weather.

[0055] (3) The steel columns (H350×350×12×19) adopt the "ground splicing and overall hoisting" process, with a verticality deviation ≤H / 1000 and ≤20mm (H is the column height), and a positioning error ≤3mm. Welded joints are prohibited above the base plate elevation, and reinforcement steel plates are used for reinforcement when necessary.

[0056] Step 2: Assembly of Modular Support System and Integration of Intelligent Correction System

[0057] (1) Installation of bracket and crossbeam: The horizontal error of the bracket is ≤2mm and the elevation angle is 90–95°; the crossbeam (H350 steel) and the bracket are connected by M24 high-strength bolts, the initial tightening torque is 50–70% of the final tightening value, and the deviation of the final tightening torque is ≤±10%.

[0058] (2) Assembly of walers and support beams: Walers are installed in sections with numbering, splicing points avoid support positions, and the axial deviation of the closed system is ≤10mm; the eccentricity of the support beam is ≤20mm, and the deflection is <0.1% of the span.

[0059] (3) Intelligent Correction System Integration: Lateral Correction System: The pressurizing component 5 is rigidly connected to the web of the support beam. The lateral intelligent pressurizing system 6 has a maximum output pressure of 10541kN, which can push the support beam to return to horizontal position. Axial Correction System: The axial intelligent pressurizing system 9 is connected to the intelligent oil source pump station 12 through a high-pressure oil pipe. It pressurizes in stages (20%→50%→30% of the design value), and stabilizes the pressure for 10 minutes at each stage to compensate for axial force loss.

[0060] Step 3: Data Analysis and Tiered Early Warning Mechanism

[0061] (1) If the displacement rate is greater than 5 mm / h or the single sudden change is greater than 3 mm, it is determined to be a sudden load abnormality, triggering a level three alarm (audio-visual warning + suspension of excavation).

[0062] (2) The displacement rate threshold method is adopted: a displacement rate of >2 mm / h for 3 consecutive hours triggers a level 2 warning (adjusting the excavation sequence); a displacement rate of >1 mm / h for 6 consecutive hours triggers a level 1 warning (starting intelligent correction).

[0063] (3) By combining multi-source data such as groundwater level and settlement of surrounding buildings, displacement causes are associated through AI algorithm (LSTM neural network), and the misjudgment rate is reduced to <8%.

[0064] Step 4: Intelligent Closed-Loop Correction Execution Process

[0065] (1) After analyzing the displacement data, the monitoring host 13 outputs correction commands (e.g., lateral thrust 200kN, axial force compensation 500kN), and the intelligent oil source pump station 12 adjusts the corresponding oil flow rate (0–50L / min stepless speed change).

[0066] (2) Multi-directional coordinated correction: Lateral reset: The lateral intelligent pressurization system 6 pushes the support beam to move horizontally, with a single correction amount ≤10mm and a repeatability accuracy of ±0.5mm. Axial force compensation: The axial intelligent pressurization system 9 pressurizes in stages to the design value (e.g., 8000kN), and locks the high-strength bolts after stabilizing the pressure for 10 minutes.

[0067] (3) Closed-loop verification: After correction, the displacement data is scanned in real time. If the expected result is not achieved (residual deviation > allowable value 50%), a second correction is initiated until the requirements are met.

[0068] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A stability monitoring and calibration device for steel composite internal supports, characterized in that, include: The support system includes steel columns (1) and steel grid-shaped crossbeams (2) respectively installed on the steel columns (1); The lateral correction system located at the top of the support system includes steel support standard parts (8) respectively located on the steel grid beam (2), pressure parts (5) respectively located on the steel support standard parts (8), and pressure system brackets (7) respectively located on the pressure parts (5); An axial correction system located at the top of the support system achieves lateral repositioning and axial stress compensation of the steel support standard component through the pressure output of the lateral correction system and the axial correction system. The intelligent terminal control system installed on the lateral correction system and the axial correction system includes an intelligent oil source pump station (12) and a monitoring host (13). The intelligent terminal control system enables real-time monitoring and correction of the steel support standard parts.

2. The stability monitoring and calibration device for internal support of a steel composite structure according to claim 1, characterized in that, The support system includes steel diagonal braces (3) installed on the steel column (1).

3. The stability monitoring and calibration device for internal support of a steel composite structure according to claim 2, characterized in that, The support system includes steel scissor bracing (4) installed on the steel column (1).

4. The stability monitoring and calibration device for internal support of a steel composite structure according to claim 3, characterized in that, The support system includes a steel support member (14) mounted on the steel column (1).

5. A stability monitoring and calibration device for internal supports of steel composite structures according to any one of claims 1-4, characterized in that, The lateral correction system includes a lateral intelligent pressurization system (6) installed on the pressurization system bracket (7), which corrects the lateral displacement of the steel support standard (8).

6. A stability monitoring and calibration device for internal supports of steel composite structures according to any one of claims 1-4, characterized in that, The axial correction system includes an axial intelligent pressurization system (9) installed on the pressurization system bracket (7), which corrects the axial displacement of the steel support standard (8).

7. A stability monitoring and calibration device for internal supports of steel composite structures according to any one of claims 1-4, characterized in that, The intelligent terminal control system includes a laser monitoring instrument (11) installed on the ground at the top of the steel support standard component (8).

8. The stability monitoring and calibration device for internal support of a steel composite structure according to claim 7, characterized in that, The intelligent terminal control system also includes a laser target (10) mounted on the steel support standard component (8).

9. The stability monitoring and calibration device for internal support of a steel composite structure according to claim 8, characterized in that, The monitoring host (13) has built-in data analysis software and alarm module.

10. A method for monitoring, calibrating, and controlling the stability of internal supports in steel composite structures, characterized in that, The stability monitoring and calibration device for internal support of a steel composite structure as described in any one of claims 1-9 is used, comprising: S100: Completes data acquisition and real-time monitoring. After the monitoring and calibration device is assembled, the laser monitor is turned on to continuously scan the target position, collect relevant data on the axial and lateral displacement of the steel support standard component, and upload the data to the monitoring host through the wireless bridge. The data is stored in the form of time series and visualized according to the displacement-time curve. S200: Analyzes data to prevent potential risks. The algorithm built into the monitoring host analyzes the displacement of the steel support standard components. If it is a short-term sudden change, it is necessary to determine whether it is an instantaneous displacement anomaly caused by a sudden load. If it is a long-term accumulation warning, it calculates the displacement rate and triggers a first-level warning after it continuously exceeds the set threshold. S300: For anomalies occurring during short-term and long-term monitoring, corresponding correction commands are issued. During short-term and long-term monitoring, the monitoring host analyzes and judges the abnormal data. After an anomaly is determined, the monitoring host issues a corresponding correction command. The intelligent oil source pump station receives the command, adjusts the corresponding oil circuit pressure and flow, pushes the steel support standard component to reset through the lateral correction system, and compensates for the axial force loss of the steel support standard component through the axial correction system. After the first correction is completed, the latest data is obtained through the device. If the expected result is not achieved, the second correction is initiated, and the cycle continues until the target is met. S400: Performs data archiving and system self-testing, generates daily monitoring reports, records displacement data, alarm events and correction records, and conducts regular system self-tests to check whether the wireless network signal strength, hydraulic system airtightness and laser monitor zero point meet the requirements.

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