A construction method, system, device and medium for full-jacking-point synchronous unloading

Abstract

A construction method, system, device and medium for full-jacking-point synchronous unloading, relate to the field of intelligent manufacturing. In the method, the structural parameters and the site elevation of the net rack ball node of each jacking point are measured to obtain measured data, the length of the jacking equipment support pipe is adjusted, the pre-pressing load is calculated according to the structural parameters and the adjusted jacking equipment and is applied, each jacking point on the jacking equipment after pre-pressing is controlled to synchronously descend by a first predetermined descending amount and the initial contact state is monitored to obtain, the descending process of each jacking point is differentially regulated according to the deflection data to obtain the leveling state, the second predetermined descending amount is determined, each jacking point is controlled to execute synchronous staged descent according to the second predetermined descending amount, and the load transfer state, the load change amount and the structural overall deformation parameters are monitored in real time, and when the conditions are met, the unloading construction is determined to be completed. The technical scheme provided by the application can effectively solve the problem of non-uniformity of force of each support caused by structural stiffness difference.

Description

Technical Field

[0001] This application relates to the technical field of intelligent manufacturing, specifically to a construction method, system, equipment, and medium for synchronous unloading at all lifting points. Background Technology

[0002] In traditional unloading operations of space frame structures, several methods are commonly used to transfer the load from the lifting equipment to the concrete columns. One method is the single-point sequential unloading method, which involves unloading the lifting points one by one in a certain order, gradually transferring the load of the structure to the concrete columns by progressively lowering the height of each individual lifting point. Another method is the group unloading method, which divides the lifting points into several groups, unloading the lifting points within each group simultaneously, and unloading different groups sequentially according to a predetermined order. These methods can accomplish the unloading task of space frame structures to a certain extent, but each has its own characteristics and applicable scenarios.

[0003] However, traditional unloading methods have obvious drawbacks. Single-point sequential unloading and group unloading methods cannot guarantee that all supports are simultaneously seated on the concrete column embedded parts, and cannot effectively solve the problem of non-uniform stress on each support caused by differences in structural stiffness. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this application provides a construction method, system, equipment and medium for synchronous unloading at the full lifting point.

[0005] The first aspect of this application provides a construction method for simultaneous unloading at all lifting points, employing the following technical solution:

[0006] Measure the structural parameters of the spherical nodes of the grid structure at each jacking point and the on-site elevation of each jacking point to obtain the measured data of each jacking point;

[0007] Based on the measured data, the length of the supporting pipe of the lifting equipment corresponding to each lifting point is adjusted to obtain the adjusted lifting equipment.

[0008] The preload is calculated based on the structural parameters and the adjusted lifting device. The preload is then applied to the adjusted lifting device to obtain the preloaded lifting device.

[0009] The lifting points on the pre-compressed lifting device are controlled to descend synchronously by a first predetermined descent amount and monitored to obtain the initial contact state.

[0010] In the initial contact state, the deflection data of each of the lifting points is monitored, and the descent process of each of the lifting points is differentiated and controlled according to the deflection data to obtain the leveling state;

[0011] The second predetermined descent amount is determined based on the preload and the preset safety threshold. When each of the lifting points is in the leveling state, the lifting points are controlled to perform synchronous graded descent according to the second predetermined descent amount. During the synchronous graded descent, the load transfer status of the space frame ball node, the load change amount of each lifting point, and the overall structural deformation parameters are monitored in real time.

[0012] When the load transfer state reaches the preset load distribution ratio, the load change is less than the preset load threshold, and the overall structural deformation parameters are within the preset safety range, the unloading construction is determined to be completed.

[0013] By adopting the above technical solution, the initial installation deviation is eliminated by measuring the actual data of the jacking point and adjusting the length of the supporting pipe. Then, a preload is applied to the jacking equipment to eliminate plastic deformation in advance, laying a stable foundation for subsequent synchronous unloading. Subsequently, controlling each jacking point to descend synchronously according to the first predetermined descent amount can ensure that the space frame ball joint and the concrete column embedded parts are placed synchronously, avoiding the asynchronous problem of traditional single-point / group unloading. At the same time, by monitoring the deflection data for differentiated control, the local stress deviation caused by the difference in structural stiffness can be corrected, making the actual stress of each support tend to be uniform, effectively avoiding the defects of poor synchronization and uneven stress in traditional methods, and improving the stability of unloading construction.

[0014] Optionally, the step of adjusting the length of the support pipe of the lifting equipment corresponding to each lifting point based on the measured data to obtain the adjusted lifting equipment includes:

[0015] Calculate the target adjustment length of each supporting pipe based on the elevation difference between the site elevation and the preset space frame design elevation;

[0016] The actual length of each supporting pipe is adjusted to the target adjustment length using the length adjustment mechanism on the lifting equipment.

[0017] The lengths of each of the adjusted support pipes are remeasured to obtain the remeasured values. When the deviation between the remeasured values ​​and the target adjustment length is within a preset error range, the adjusted lifting device is obtained.

[0018] By adopting the above technical solution, the target length of the support pipe is accurately calculated based on the difference between the site elevation and the design elevation, ensuring the scientific nature of the adjustment basis. The length adjustment mechanism enables precise adjustment of the actual length to the target length, ensuring the controllability of the operation. By re-testing and verifying and controlling the deviation within the preset range, adjustment errors are further eliminated. Ultimately, the length of the support pipe at each jacking point is highly consistent with the design requirements, effectively avoiding the adverse effects of initial installation deviations on subsequent pre-pressurization, synchronous descent and other processes, laying the foundation for precise synchronization of the entire unloading construction.

[0019] Optionally, the step of calculating the preload based on the structural parameters and the adjusted lifting device, and applying the preload to the adjusted lifting device to obtain the preloaded lifting device includes:

[0020] Based on the adjusted rated bearing capacity of the lifting equipment, the self-weight parameter in the structural parameters, and the preset safety factor, the preload is calculated and determined.

[0021] The preload is divided into multiple load levels based on a preset number of levels. The load is applied to the adjusted lifting equipment in stages according to the multiple load levels, and the compression deformation of each supporting pipe under the target load level is monitored.

[0022] When the difference between any two adjacent compression deformations is within a preset stability threshold, the adjusted lifting device under the target load level is determined to be in a stable state, and the next level of the target load level is applied until the last level of the target load level is applied.

[0023] After completing the final stage of graded application, the pre-compressed lifting device is obtained.

[0024] By adopting the above technical solution, based on the rated bearing capacity and structural self-weight parameters of the adjusted lifting equipment, and combined with the preset safety factor to calculate the preload, it is possible to avoid damage to the equipment due to the preload exceeding the equipment's bearing capacity limit, and to ensure that the preload matches the actual stress requirements of the structure, preventing insufficient preload from failing to achieve the expected effect. Dividing the preload into multiple levels and applying it in stages can avoid sudden deformation of the supporting pipes or equipment caused by excessive single loading, ensuring the stability of the loading process. By monitoring the amount of compression deformation and using the difference between adjacent deformations within a stable threshold as the criterion for judging equipment stability, it is possible to accurately confirm that the equipment is in a stable state under each load level, preventing cumulative errors caused by entering the next loading level before the equipment is stable. Finally, after completing the application of all levels to obtain the preloaded lifting equipment, the plastic deformation of the equipment itself can be eliminated in advance, avoiding the disruption of unloading synchronicity due to inconsistent equipment deformation during the subsequent synchronous descent, and providing a stable equipment foundation for the accurate execution of subsequent processes.

[0025] Optionally, the calculation of the preload based on the adjusted rated bearing capacity of the lifting equipment, the self-weight parameter in the structural parameters, and the preset safety factor includes:

[0026] The rated bearing capacity is compared with the self-weight parameter, and the smaller value between the rated bearing capacity and the self-weight parameter is used as the reference load.

[0027] Multiply the reference load by the preset safety factor to obtain the preliminary preload value;

[0028] Based on the preset structural deformation control parameters and preset load distribution uniformity parameters, the preliminary preload value is corrected using a linear interpolation algorithm to obtain the preload.

[0029] By adopting the above technical solution, the smaller value between the rated bearing capacity of the lifting equipment and the self-weight of the structure is first selected as the reference load. This avoids both the risk of equipment overload damage and unnecessary stress accumulation in the structure, thus defining a reasonable foundation range for the preloading load. The reference load is then multiplied by a preset safety factor to obtain the preliminary preloading load value. This safety margin offsets uncertainties such as measurement errors and environmental interference, improving preloading safety. Finally, based on the structural deformation control parameters and load distribution uniformity parameters, a linear interpolation algorithm is used to correct the preliminary value. This ensures precise matching between the preloading load and the structural design requirements, guaranteeing compliant structural deformation and uniform stress after preloading. The entire process is rigorously controlled at each stage, resulting in a preloading load that combines safety and adaptability, providing a scientific basis for subsequent graded preloading.

[0030] Optionally, the control of each lifting point on the pre-compressed lifting device to descend synchronously by a first predetermined descent amount and monitor it to obtain the initial contact state includes:

[0031] Based on the structural parameters, the preset initial contact safety distance, and the minimum adjustment accuracy of the pre-compressed lifting device, the first predetermined descent amount is determined;

[0032] The lifting points on the pre-compressed lifting device are controlled to descend synchronously at a preset rate, and the actual descent amount of each lifting point is monitored in real time.

[0033] When the actual descent amount reaches the first predetermined descent amount, the descent operation of each of the lifting points is stopped, and the contact pressure and relative displacement change rate of each of the grid ball nodes are monitored.

[0034] If all the contact pressures reach the preset contact threshold and all the relative displacement change rates are lower than the preset stability threshold, then the initial contact state is obtained.

[0035] By adopting the above technical solution, and combining structural parameters, initial contact safety distance, and minimum equipment adjustment accuracy to determine the first predetermined descent amount, the descent amount is ensured to match structural requirements, while also reserving a safety buffer and fitting the equipment's adjustment capacity, avoiding excessive or insufficient descent. Controlling each jacking point to descend synchronously at a preset rate and monitoring the actual descent amount ensures consistent action at each point, preventing structural stress imbalance caused by asynchronous descent. After stopping descent, monitoring the contact pressure and relative displacement change rate accurately determines whether the space frame ball joints are in stable contact, avoiding hard impacts; the initial contact state is determined only when both parameters meet the standards, effectively avoiding problems of incomplete or excessive contact. The overall process achieves precise control and safety verification of the initial contact process, laying a stable foundation for subsequent differentiated leveling procedures.

[0036] Optionally, determining the first predetermined descent amount based on the structural parameters, the preset initial contact safety distance, and the minimum adjustment accuracy of the pre-compressed lifting device includes:

[0037] The theoretical descent is obtained by subtracting the initial contact safety distance from the elevation difference between the on-site elevation and the preset space frame design elevation.

[0038] The first predetermined descent amount is obtained by rounding the theoretical descent amount upward to the smallest integer multiple of the minimum adjustment precision.

[0039] By adopting the above technical solution, the theoretical descent amount is first obtained by subtracting the initial contact safety distance from the elevation difference. This proactively reserves contact buffer space, preventing direct hard contact between the space frame ball joints and the supporting structure during subsequent descent, effectively reducing the risk of impact damage and ensuring initial contact safety. Then, the theoretical descent amount is rounded up to the smallest integer multiple of the equipment's minimum adjustment accuracy, adapting to the actual adjustment capacity of the lifting equipment. This avoids insufficient descent due to equipment precision limitations preventing the theoretical value from being reached, while ensuring that the actual descent amount is not lower than the theoretical value, meeting safety distance requirements. Overall, through the calculation logic of "safety reserve + precision adaptation," a reasonable first predetermined descent amount is accurately determined, providing a scientific basis for the synchronous descent of each subsequent lifting point to the initial contact state, further improving the accuracy and safety of the unloading construction.

[0040] Optionally, the step of monitoring the deflection data of each of the lifting points in the initial contact state, and differentially controlling the descent process of each of the lifting points based on the deflection data to obtain the leveling state includes:

[0041] Monitor the deflection data of each of the lifting points, and the deflection difference between two adjacent lifting points;

[0042] The deflection data is compared with the preset deflection reference value to obtain the deflection deviation value of each lifting point;

[0043] The base descent is obtained by multiplying the deflection deviation value of the target jacking point by a preset first proportional coefficient, and the compensation descent is obtained by multiplying the maximum deflection difference value by a preset second proportional coefficient. The maximum deflection difference value is the maximum absolute value of the deflection difference between the target jacking point and all adjacent jacking points. The base descent is added to the compensation descent to obtain the differentiated descent of the target jacking point. The target jacking point is any one of the jacking points.

[0044] Control each of the lifting points to perform a descent operation according to the corresponding differentiated descent amount, and simultaneously monitor the adjacent deflection difference of each of the lifting points;

[0045] When all adjacent deflection differences are less than a preset difference threshold, the leveling state is determined to be reached.

[0046] By adopting the above technical solution, the deflection data of each jacking point and the difference in deflection between adjacent points are monitored simultaneously. This allows for a comprehensive understanding of the deformation differences between a single point and adjacent points, avoiding the one-sidedness of leveling caused by relying solely on single-point data. The deviation value is obtained by comparing the deflection data with the benchmark value, providing a clear basis for differentiated single-point adjustments. When calculating the differentiated descent, the base descent is determined by the deflection deviation value to ensure single-point deviation correction. Then, the compensation descent is calculated by combining the maximum adjacent deflection difference of the target jacking point. This simultaneously considers both single-point deformation correction and adjacent point deformation balance, effectively avoiding the problem of stress imbalance at adjacent points caused by traditional single-point adjustments. Controlling each jacking point to execute the corresponding differentiated descent, and using the attainment of all adjacent deflection differences as the leveling criterion, ensures uniform deformation at each jacking point of the space frame after leveling. This eliminates localized stress unevenness caused by differences in structural stiffness, laying a uniform stress foundation for subsequent synchronous staged unloading and significantly improving leveling accuracy and structural stress stability.

[0047] The second aspect of this application provides a construction method system for simultaneous unloading at all lifting points:

[0048] The actual measurement and acquisition module is used to measure the structural parameters of the grid ball nodes at each jacking point and the on-site elevation of each jacking point, and to obtain the actual measurement data of each jacking point.

[0049] The pipe fitting adjustment module is used to adjust the length of the supporting pipe fitting of the lifting equipment corresponding to each of the lifting points based on the measured data, so as to obtain the adjusted lifting equipment.

[0050] The preloading processing module is used to calculate the preloading load based on the structural parameters and the adjusted lifting equipment, and apply the preloading load to the adjusted lifting equipment to obtain the preloaded lifting equipment.

[0051] The synchronous descent judgment module is used to control each of the jacking points on the pre-compressed jacking device to descend synchronously according to a first predetermined descent amount and to monitor it to obtain the initial contact state.

[0052] The deflection leveling module is used to monitor the deflection data of each of the lifting points in the initial contact state, and to differentiate and control the descent process of each of the lifting points based on the deflection data to obtain a leveling state.

[0053] The graded monitoring module is used to determine the second predetermined descent amount based on the preload and the preset safety threshold. When each of the lifting points is in the leveling state, it controls each of the lifting points to perform synchronous graded descent according to the second predetermined descent amount. During the synchronous graded descent, it monitors in real time the load transfer status of the space frame ball node, the load change amount of each of the lifting points, and the overall structural deformation parameters.

[0054] The unloading judgment module is used to determine that the unloading construction is completed when the load transfer state reaches the preset load distribution ratio, the load change is less than the preset load threshold, and the overall structural deformation parameters are within the preset safety range.

[0055] A third aspect of this application provides an electronic device including a processor, a memory, a user interface, and a network interface, wherein the memory is used to store instructions, the user interface and the network interface are both used to communicate with other devices, and the processor is used to execute the instructions stored in the memory to cause the electronic device to perform the method as described in any of the foregoing.

[0056] A fourth aspect of this application provides a computer-readable storage medium storing instructions that, when executed, perform the method described in any of the preceding descriptions.

[0057] In summary, one or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0058] Throughout the entire process, key steps are carefully controlled at each stage. First, initial installation deviations are eliminated using measured data. Then, preload is applied in stages based on precise calculations of the equipment's rated bearing capacity and the structure's self-weight to eliminate plastic deformation of the equipment in advance. Next, the first predetermined descent amount is determined through "safety allowance + precision adaptation" to achieve initial stable contact. Subsequently, differentiated leveling is performed based on deflection data, taking into account both single-point deviations and adjacent deformation balance. Finally, multi-parameter monitoring and threshold judgment ensure the safe completion of synchronous and staged unloading. This effectively solves the defects of poor synchronization and uneven stress in traditional single-point / group unloading. The supporting system modules and method steps correspond one by one to ensure that the technical solution can be implemented. Electronic equipment and storage media provide hardware and data storage support for the implementation of the method. Overall, the accuracy, safety, and stability of synchronous unloading construction at the full jacking point are significantly improved, which can effectively protect the space frame structure from damage and truly meet the requirements of engineering construction quality and safety. Attached Figure Description

[0059] Figure 1 This is a schematic diagram of the system architecture of an embodiment of a construction method or system for synchronous unloading of all jacking points that applies this application.

[0060] Figure 2 This is a schematic flowchart of a construction method for synchronous unloading at all lifting points disclosed in an embodiment of this application;

[0061] Figure 3 This is a schematic diagram of a construction system for synchronous unloading at all lifting points, as disclosed in an embodiment of this application.

[0062] Figure 4 This is a schematic diagram of the structure of an electronic device disclosed in an embodiment of this application.

[0063] Explanation of reference numerals in the attached diagram: 301, Actual measurement acquisition module; 302, Pipe fitting adjustment module; 303, Pre-compression processing module; 304, Synchronous decompression judgment module; 305, Deflection leveling module; 306, Graded monitoring module; 307, Unloading judgment module; 401, Processor; 402, Communication bus; 403, User interface; 404, Network interface; 405, Memory. Detailed Implementation

[0064] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0065] like Figure 1As shown, system architecture 100 may include terminal devices 101, 102, and 103, a network 104, and a server 105. Network 104 serves as the medium for providing communication links between terminal devices 101, 102, and 103 and server 105. Network 104 may include various connection types, such as wired or wireless communication links, or fiber optic cables, etc.

[0066] Users can use terminal devices 101, 102, and 103 to interact with server 105 via network 104 to receive or send messages, etc. Various communication client applications can be installed on terminal devices 101, 102, and 103, such as model training applications, video recognition applications, web browser applications, social platform software, etc.

[0067] Terminal devices 101, 102, and 103 can be either hardware or software. When terminal devices 101, 102, and 103 are hardware, they can be various electronic devices with displays, including but not limited to smartphones, tablets, e-book readers, MP3 (Moving Picture Experts Group Audio Layer III) players, MP4 (Moving Picture Experts Group Audio Layer IV) players, laptops, and desktop computers, etc. When terminal devices 101, 102, and 103 are software, they can be installed in the aforementioned electronic devices. They can be implemented as multiple software programs or software modules (e.g., multiple software programs or software modules used to provide distributed services) or as a single software program or software module. No specific limitations are imposed here.

[0068] This embodiment discloses a construction method for synchronous unloading at all lifting points. Figure 2 This is a schematic flowchart of a construction method for synchronous unloading at all lifting points disclosed in an embodiment of this application, as shown below. Figure 2 As shown, the method includes the following steps:

[0069] S201. Measure the structural parameters of the spherical nodes of the grid structure at each jacking point and the on-site elevation of each jacking point to obtain the measured data of each jacking point.

[0070] Specifically, a total station and laser rangefinder were used in conjunction to perform three-dimensional coordinate measurements on the spherical nodes of the space frame at each jacking point, obtaining their diameter, radius of curvature, and spatial position structural parameters. A precision level was then used to measure the actual elevation at each jacking point, obtaining measured elevation data. This measurement data was uploaded in real-time to the data processing system via a wireless transmission module. The system automatically generated a report containing the jacking point number, spherical node structural parameters, and on-site elevation data, and stored the data in a central database, providing data support for subsequent adjustments to the jacking equipment. During the measurement process, each jacking point required three independent measurements, and the average value was taken to ensure the accuracy and reliability of the measured data.

[0071] S202. Based on the measured data, adjust the length of the support pipe of the lifting device corresponding to each lifting point to obtain the adjusted lifting device.

[0072] Specifically, the system receives structural parameters of the ball nodes of the jacking structure at each lifting point and measured elevation data from the measurement system. Based on the difference between the on-site elevation and the preset design elevation of the jacking structure, it calculates the target adjustment length of each supporting pipe using a built-in algorithm. Adjustment commands are sent to the electro-hydraulic servo length adjustment mechanism at each lifting point via industrial Ethernet, driving the precision ball screw mechanism to accurately adjust the length of the supporting pipe to the target value. A measurement robot performs laser re-measurement of the adjusted pipe length. When the deviation between the measured length and the target value is controlled within ±0.5mm, the server marks the lifting device as adjusted, stores all adjustment data in the database, and generates a verification report containing comparison data before and after adjustment.

[0073] Optionally, the step of adjusting the length of the support pipe of the lifting equipment corresponding to each lifting point based on the measured data to obtain the adjusted lifting equipment includes:

[0074] Calculate the target adjustment length of each supporting pipe based on the elevation difference between the site elevation and the preset space frame design elevation;

[0075] The actual length of each supporting pipe is adjusted to the target adjustment length using the length adjustment mechanism on the lifting equipment.

[0076] The lengths of each of the adjusted support pipes are remeasured to obtain the remeasured values. When the deviation between the remeasured values ​​and the target adjustment length is within a preset error range, the adjusted lifting device is obtained.

[0077] Specifically, a data processing system is used to calculate the difference ΔH (unit: mm) between the measured elevation and the design elevation at each jacking point. Then, the target adjustment length is calculated using the formula L_t = ΔH + α·L_d·ΔT + β. Where L_t is the target adjustment length (unit: mm), α is the thermal expansion coefficient of the pipe (unit: 1 / ℃), L_d is the design length of the supporting pipe (unit: mm), ΔT is the difference between the on-site temperature and the standard temperature (unit: ℃), and β is the welding deformation compensation (unit: mm, generally taken as 2-3 mm). The material properties of the supporting pipe must be considered during the calculation; for Q355B steel, α is taken as 1.2 × 10⁻⁻⁶. 5 / ℃; For stainless steel, α is 1.7 × 10⁻ 5 / ℃. The calculation results are retained to 0.1mm, and a data report containing the jacking point number, elevation difference ΔH, and target adjustment length L_t is generated and output to the operator through the on-site display terminal. At the same time, the system automatically stores the calculation process and results for subsequent quality traceability and verification.

[0078] Furthermore, a remote control platform deployed on the server sends target adjustment length commands to the electro-hydraulic servo length adjustment mechanisms of each lifting device. Based on a pre-established digital twin model of the supporting pipe fittings, the server automatically generates a command set containing the lifting point number, target length value, and adjustment priority, which is transmitted to the field PLC (Programmable Logic Controller) system via industrial Ethernet. Upon receiving the commands, the servo motors at each lifting point drive the precision ball screw mechanism for length adjustment. Their built-in absolute encoders collect actual length data in real time and feed it back to the server. The server dynamically adjusts the output signal by comparing the deviation between the target value and the measured value using a PID (Proportional-Integral-Derivative) control algorithm. The adjustment process automatically terminates when the length error is less than ±0.2mm, and the adjustment result is written to the construction database. Simultaneously, the server records all process data, including adjustment time, final accuracy, and equipment status, generating a visualized adjustment report. Throughout the process, the server performs a status check on each lifting point every 500ms, immediately activating the safety interlock mechanism upon detecting any abnormalities.

[0079] Furthermore, after adjusting the length of the supporting pipes, the actual length of each supporting pipe is remeasured using a high-precision laser rangefinder installed on the measuring robot. Specifically, the server sends a remeasurement command to the measuring robot, which automatically aligns with the preset measurement markers on each supporting pipe (usually located on the machined optical reflection planes at both ends of the pipe), collects at least three sets of distance data, and takes the average as the remeasurement value. The server compares the remeasurement value with the target adjusted length. When the deviation is within the preset error range (usually ±0.5mm), a length acceptance signal is automatically generated, and the lifting device is marked as "adjustment complete." When the deviation exceeds the limit, the server immediately issues a readjustment command and records the out-of-tolerance data in the anomaly handling log. Finally, all remeasurement data, deviation values, and acceptance results are automatically uploaded to the construction quality management database, generating a timestamped supporting pipe length adjustment acceptance report.

[0080] S203. Calculate the preload based on the structural parameters and the adjusted lifting device, and apply the preload to the adjusted lifting device to obtain the preloaded lifting device.

[0081] Specifically, based on the adjusted rated bearing capacity parameters of the lifting equipment, the self-weight parameters of the space frame structure, and the set safety factor, the final preload value is calculated by comparing the values ​​of the rated bearing capacity and the self-weight of the space frame and taking the smaller value. Then, considering the safety factor, the influence of temperature changes, and characteristics such as the span and node form of the space frame, the preload value is determined. This preload value is divided into several load levels according to a preset ratio, and the lifting equipment is driven to apply the load level by level through a hydraulic servo system. During the application of each load level, high-precision displacement sensors arranged on each support pipe are used to monitor the compression deformation in real time. When the deformation difference between all adjacent monitoring points is less than 0.05 mm and the deformation rate is below 0.05 mm / min for 3 consecutive minutes, the load level is considered complete, and the next level of loading continues. When the load reaches 100% of the preload value and remains stable for 10 minutes, the hydraulic locking device is automatically activated to lock the current position. The server updates the equipment status to preload completion and generates a complete preload process report, which is then stored in the database. This completes the process of obtaining the preloaded lifting equipment.

[0082] Optionally, the step of calculating the preload based on the structural parameters and the adjusted lifting device, and applying the preload to the adjusted lifting device to obtain the preloaded lifting device includes:

[0083] Based on the adjusted rated bearing capacity of the lifting equipment, the self-weight parameter in the structural parameters, and the preset safety factor, the preload is calculated and determined.

[0084] The preload is divided into multiple load levels based on a preset number of levels. The load is applied to the adjusted lifting equipment in stages according to the multiple load levels, and the compression deformation of each supporting pipe under the target load level is monitored.

[0085] When the difference between any two adjacent compression deformations is within a preset stability threshold, the adjusted lifting device under the target load level is determined to be in a stable state, and the next level of the target load level is applied until the last level of the target load level is applied.

[0086] After completing the final stage of graded application, the pre-compressed lifting device is obtained.

[0087] Specifically, the rated bearing capacity F_r is confirmed by obtaining the material specifications of the supporting pipe fittings. The self-weight G of the space frame is extracted from the structural design documents, and the preset safety factor K_s (usually taken as 1.2-1.5) is retrieved from the safety standard database. Then, the foundation preload value is calculated according to the formula P_pre=min(F_r,G)·K_s·(1+γ), where P_pre is the preload, γ is the temperature influence coefficient (calculated at 0.15% / ℃ based on the difference between the site temperature and the standard temperature), and min(F_r,G) represents the minimum value of F_r and G. After the calculation is completed, the server generates an instruction set containing the preload values ​​of each jacking point, and sends it to the controller of each jacking equipment after encryption with digital signature.

[0088] Furthermore, according to a preset load grading strategy (usually divided into 5-8 levels), the preload P_pre is divided into multiple load levels in a proportionally increasing manner. In practice, the server first divides the preload into several load levels (e.g., P1=20%P_pre, P2=40%P_pre, ..., Pn=100%P_pre) via control commands, and then applies the load step-by-step to the adjusted lifting equipment through a hydraulic servo system. For each target load level applied, the server monitors the real-time compression deformation of each supporting pipe component using a high-precision displacement sensor (accuracy ±0.01mm), and dynamically adjusts the hydraulic output using a PID control algorithm to control the deviation between the actual load value and the target value within ±2%.

[0089] Furthermore, after each load level is applied and the preset holding time is reached, the server acquires the data set of compression deformation of all supporting pipes under the current load level through the data acquisition module, and calculates the difference in compression deformation Δδ between any two adjacent measuring points (with a distance of no more than 5 meters). When Δδ of all adjacent measuring points is less than the preset stability threshold (usually 0.05 mm), the server automatically determines that the jacking equipment is in a stable state under that load level, and then issues a command to the hydraulic control system to continue applying the next load level according to the load grading sequence. This process is repeated until the final load level Pn (i.e., 100% preload) is reached. The system automatically records the stability judgment results and deformation compatibility data under each load level, and generates a load-steady-state evolution curve which is stored in the construction database.

[0090] Furthermore, after completing the final stage of application (i.e., the load reaches 100% of the preload value Pn) and meeting the stability criterion, the server performs the following operations to confirm the preloaded jacking equipment: First, the final load is maintained for 10 minutes, during which the monitoring system collects the residual compressive deformation of all supporting pipes at a frequency of 1Hz. When the deformation rate is less than 0.01mm / min for 5 consecutive minutes, the server automatically determines that preloading is complete. Subsequently, the hydraulic locking device is triggered to lock the current position of all jacking points, and a "preloading complete" status command is sent to the construction terminal. The system automatically generates an encrypted report containing deformation data of each load stage, stabilization time curves, and the final preloading results, and writes the key parameters of the preloaded jacking equipment (including the actual preload value, comprehensive compressive deformation, and equipment stability status identifier) ​​into the equipment database, updating the equipment status to "preloading complete and ready for operation". At this time, the initial compressibility differences of each supporting pipe of the jacking equipment have been eliminated, and it is in a stable compacted state, ready for subsequent synchronous descent operations.

[0091] Optionally, the calculation of the preload based on the adjusted rated bearing capacity of the lifting equipment, the self-weight parameter in the structural parameters, and the preset safety factor includes:

[0092] The rated bearing capacity is compared with the self-weight parameter, and the smaller value between the rated bearing capacity and the self-weight parameter is used as the reference load.

[0093] Multiply the reference load by the preset safety factor to obtain the preliminary preload value;

[0094] Based on the preset structural deformation control parameters and preset load distribution uniformity parameters, the preliminary preload value is corrected using a linear interpolation algorithm to obtain the preload.

[0095] Specifically, the rated bearing capacity value is read from the jacking equipment parameter database, and the self-weight parameter value is extracted from the space frame structure design document. The two values ​​are input into the comparison unit for comparison, and the smaller value is selected as the reference load. During the comparison process, unit uniformity verification and value validity verification are required. When the difference between the two values ​​exceeds 50%, the manual confirmation procedure is automatically triggered. The final output reference load value will be marked with the data source and written into the load calculation database to provide a benchmark for subsequent preload calculation.

[0096] Furthermore, the system reads the established baseline load value and preset safety factor (typically a value within the range of 1.2-1.5) from the system database and inputs these two values ​​into the multiplication unit to perform arithmetic multiplication. During the calculation, the system automatically performs unit consistency checks (ensuring all units are in kN) and numerical validity checks (ensuring the safety factor is within a reasonable range of 1.0-2.0). The result of the multiplication operation is the preliminary preload value. The system immediately stores this value in a temporary cache and generates a calculation log, recording information including the baseline load, safety factor, calculation timestamp, and operator ID. Simultaneously, the system compares this preliminary value with historical engineering data. When the value deviates from the empirical value of similar projects by ±25%, a review prompt is automatically triggered, requiring engineer confirmation. The approved preliminary preload value is marked as "pending correction" and transmitted to the next correction calculation process.

[0097] Furthermore, based on preset structural deformation control parameters (including the span of the space frame and the allowable deflection value) and load distribution uniformity parameters (including node type and the number of support points), a linear interpolation algorithm is used to correct the initial preload value. In specific implementation, the system reads the current space frame's span value, node type, and design allowable deflection value from the structural database. Based on the span value within a preset interpolation range (e.g., 50m-100m corresponding to a correction factor of 1.0-1.1), the system calculates the span correction factor and determines the node correction factor based on the node type (1.05 for welded ball nodes and 1.0 for bolted ball nodes). The initial preload value is then multiplied sequentially by the span correction factor and the node correction factor to obtain the final preload value. After calculation, the complete correction process and final result are recorded, and the preload value is sent to the jacking equipment control system for loading operations.

[0098] S204. Control each of the lifting points on the pre-compressed lifting device to descend synchronously according to a first predetermined descent amount and monitor it to obtain the initial contact state.

[0099] Specifically, the server controls all pre-pressurized lifting equipment to descend synchronously at a rate of 5-10 mm / min according to a first predetermined descent amount. High-precision displacement sensors (accuracy ±0.01 mm) installed at each lifting point monitor the actual descent amount in real time at a frequency of 10 Hz. When all lifting points reach the first predetermined descent amount, descent immediately stops and the system switches to monitoring mode: contact pressure is monitored by pressure sensors (range 0-500 kN) located at the bottom of the spherical nodes of the space frame, while the relative displacement change rate is measured using a laser rangefinder (accuracy ±0.01 mm). When the contact pressure at all measuring points reaches 5 kN and the relative displacement change rate remains below 0.1 mm / min for 3 consecutive minutes, the server automatically determines that the initial contact state has been reached. The hydraulic system maintains pressure and generates a status report containing descent process data, contact pressure values, and stabilization time, which is then stored in the database. Monitoring data is recorded at 0.1-second intervals, and abnormal data triggers audible and visual alarms.

[0100] Optionally, the control of each lifting point on the pre-compressed lifting device to descend synchronously by a first predetermined descent amount and monitor it to obtain the initial contact state includes:

[0101] Based on the structural parameters, the preset initial contact safety distance, and the minimum adjustment accuracy of the pre-compressed lifting device, the first predetermined descent amount is determined;

[0102] The lifting points on the pre-compressed lifting device are controlled to descend synchronously at a preset rate, and the actual descent amount of each lifting point is monitored in real time.

[0103] When the actual descent amount reaches the first predetermined descent amount, the descent operation of each of the lifting points is stopped, and the contact pressure and relative displacement change rate of each of the grid ball nodes are monitored.

[0104] If all the contact pressures reach the preset contact threshold and all the relative displacement change rates are lower than the preset stability threshold, then the initial contact state is obtained.

[0105] Specifically, based on the minimum adjustment accuracy (usually 0.5mm) in the parameter library of the pre-loaded lifting equipment, the design elevation of the space frame and the measured elevation data on site in the structural parameters, and the preset initial contact safety distance (usually 3-5mm), the first predetermined descent amount is determined through the following steps: Calculate the difference ΔH between the site elevation and the design elevation, subtract the initial contact safety distance from ΔH to obtain the theoretical descent amount, divide the theoretical descent amount by the minimum adjustment accuracy and round the quotient up, then multiply it by the minimum adjustment accuracy to obtain the first predetermined descent amount that meets the equipment operation accuracy requirements. After the calculation is completed, the system automatically verifies whether the result value is an integer multiple of the minimum adjustment accuracy and is within the allowable stroke range of the equipment, and sends the determined descent amount value to the controller of each lifting equipment.

[0106] Furthermore, a synchronous descent command is issued to all pre-compressed lifting equipment. This command includes a preset descent rate (typically controlled at 5-10 mm / min) and a first predetermined descent amount. Upon receiving the command, the servo motors at each lifting point drive the support pipes to descend synchronously at the set rate via the hydraulic synchronization control system. Simultaneously, high-precision displacement sensors (accuracy ±0.01 mm) installed at each lifting point monitor the actual descent amount in real time at a sampling frequency of 10 Hz. The monitoring data is transmitted in real time to the server monitoring system via industrial Ethernet. The server compares the deviation between the actual descent amount and the target value at each lifting point, dynamically adjusting the hydraulic output using a PID control algorithm to ensure that the synchronization error at all lifting points is less than 0.5 mm. The server then displays the descent amount and synchronization error curves at each point in real time on the monitoring interface, providing operators with visual monitoring data.

[0107] Furthermore, when the actual descent of all jacking points reaches the first predetermined descent value, a stop command is immediately sent to the jacking equipment, and the current position is locked in a holding pressure state. Subsequently, the pressure sensor array (range 0-500kN, accuracy ±0.5%FS) and laser rangefinder (accuracy ±0.01mm) arranged at the bottom of the spherical joint of the space frame are activated to collect the contact pressure data of each node and the relative displacement change rate between the node and the supporting structure in real time at a sampling frequency of 10Hz. The monitoring data is transmitted to the display interface of the monitoring terminal through the on-site industrial network, and the operator can view the contact pressure distribution map and displacement change rate curve in real time. All monitoring data are synchronously recorded in the construction database, and when abnormal data points are detected, the monitoring terminal automatically issues an audible and visual alarm to notify the on-site personnel.

[0108] Furthermore, high-precision pressure sensors deployed at the bottom of the spherical nodes of the space frame monitor the contact pressure of each node, while a laser rangefinder measures the relative displacement change rate between the nodes and the supporting structure. The monitoring data is transmitted in real time to the monitoring terminal for automatic analysis. When the contact pressure of all nodes reaches 5 kN and the relative displacement change rate of all nodes is below 0.1 mm / min for 3 consecutive minutes, a "initial contact state achieved" signal is triggered. The hydraulic control device then locks and maintains the current pressure state, the status indicator light on the monitoring interface turns green, and all monitoring data (including contact pressure values, displacement change rate, and state achievement time) is recorded in the construction database.

[0109] Optionally, determining the first predetermined descent amount based on the structural parameters, the preset initial contact safety distance, and the minimum adjustment accuracy of the pre-compressed lifting device includes:

[0110] The theoretical descent is obtained by subtracting the initial contact safety distance from the elevation difference between the on-site elevation and the preset space frame design elevation.

[0111] The first predetermined descent amount is obtained by rounding the theoretical descent amount upward to the smallest integer multiple of the minimum adjustment precision.

[0112] Specifically, the system acquires the actual elevation data of each jacking point from the real-time measurement system, and simultaneously reads the preset design elevation value of the space frame from the structural design file. The system automatically calculates the elevation difference ΔH at each jacking point (ΔH = on-site elevation - design elevation). It then calls the initial contact safety distance value (usually 3-5mm) from the safety parameter database and performs a subtraction operation: theoretical descent = ΔH - initial contact safety distance. During the calculation, the system automatically performs unit consistency verification (ensuring all units are in millimeters) and numerical validity verification (ensuring the theoretical descent is positive and within the equipment's travel range). If the calculation result is negative, an adjustment program is automatically triggered. Finally, a data report containing the theoretical descent of each jacking point is generated.

[0113] Furthermore, the system obtains the calculated theoretical descent amount and the minimum adjustment accuracy of the pre-loaded lifting equipment (typically 0.5 mm), and calculates the first predetermined descent amount using a mathematical rounding algorithm. Specifically, the system divides the theoretical descent amount by the minimum adjustment accuracy, rounds the quotient using an up-rounding function (such as the ceil function), and then multiplies the rounded result by the minimum adjustment accuracy to obtain the first predetermined descent amount (calculation formula: first predetermined descent amount = ceil(theoretical descent amount / minimum adjustment accuracy) × minimum adjustment accuracy). After calculation, the system automatically verifies whether the result is an integer multiple of the minimum adjustment accuracy and sends the final determined first predetermined descent amount to each lifting equipment controller. Simultaneously, it generates a calculation record containing the theoretical descent amount, minimum adjustment accuracy, and the final rounded result, and stores it in the database.

[0114] S205. Monitor the deflection data of each of the lifting points in the initial contact state, and differentiate the descent process of each of the lifting points according to the deflection data to obtain the leveling state.

[0115] Specifically, after the initial contact state is established, deflection monitoring devices deployed at each jacking point collect deflection data at a frequency of 10Hz in real time. The monitoring terminal automatically calculates the deflection difference between adjacent jacking points (with a spacing of no more than 5 meters). The real-time deflection data is compared with the preset deflection benchmark value to obtain the deflection deviation value of each jacking point, and the differentiated descent amount of each jacking point is calculated accordingly. Each jacking point is controlled to perform a descent operation according to the calculated differentiated descent amount, while simultaneously monitoring the adjacent deflection difference. When all adjacent deflection differences are less than 0.05mm for 3 consecutive minutes, the leveling state is automatically determined, the hydraulic system locks the current position and generates a leveling state report, which is then stored in the database.

[0116] Optionally, the step of monitoring the deflection data of each of the lifting points in the initial contact state, and differentially controlling the descent process of each of the lifting points based on the deflection data to obtain the leveling state includes:

[0117] Monitor the deflection data of each of the lifting points, and the deflection difference between two adjacent lifting points;

[0118] The deflection data is compared with the preset deflection reference value to obtain the deflection deviation value of each lifting point;

[0119] The base descent is obtained by multiplying the deflection deviation value of the target jacking point by a preset first proportional coefficient, and the compensation descent is obtained by multiplying the maximum deflection difference value by a preset second proportional coefficient. The maximum deflection difference value is the maximum absolute value of the deflection difference between the target jacking point and all adjacent jacking points. The base descent is added to the compensation descent to obtain the differentiated descent of the target jacking point. The target jacking point is any one of the jacking points.

[0120] Control each of the lifting points to perform a descent operation according to the corresponding differentiated descent amount, and simultaneously monitor the adjacent deflection difference of each of the lifting points;

[0121] When all adjacent deflection differences are less than a preset difference threshold, the leveling state is determined to be reached.

[0122] Specifically, deflection monitoring devices deployed at each jacking point collect deflection data in real time, with a monitoring frequency of no less than 10Hz. A data acquisition unit transmits the deflection values ​​from each measuring point to a monitoring terminal in real time. The monitoring terminal automatically calculates the deflection difference between two adjacent jacking points (with a distance not exceeding 5 meters). All deflection data and difference data are displayed in real time on the monitoring interface. When the deflection difference exceeds 0.05mm, an audible and visual alarm is automatically triggered. The monitoring data is also recorded in the construction database, generating a deflection monitoring report with timestamps, providing data support for subsequent differentiated descent control.

[0123] Furthermore, the system automatically retrieves preset deflection reference values ​​(usually the design deflection value or initial calibration value), and subtracts the real-time collected deflection data of each jacking point from the corresponding reference value to obtain the real-time deflection deviation value of each jacking point (calculation formula: deflection deviation value = real-time deflection value - deflection reference value). The calculation process is executed continuously at a frequency of 10Hz, and the calculation results are displayed in real time on the jacking point distribution map on the monitoring interface, using color gradients to visually represent the magnitude of the deviation (green indicates small deviation, red indicates large deviation). When the deflection deviation value exceeds ±0.1mm, an audible and visual alarm is automatically triggered. All deviation data are recorded in the construction database at 0.1-second intervals, generating a deflection deviation report with a timestamp, providing a quantitative basis for subsequent differentiated descent control.

[0124] Furthermore, the real-time deflection deviation value of the target jacking point is obtained, and this value is multiplied by a preset first proportional coefficient (usually 0.8-1.2) to obtain the basic descent amount; at the same time, the deflection difference data of the target jacking point and all its adjacent jacking points (with a spacing of no more than 5 meters) are extracted from the database, and the maximum value is taken as the maximum deflection difference. This maximum value is multiplied by a preset second proportional coefficient (usually 0.1-0.3) to obtain the compensation descent amount; finally, the basic descent amount and the compensation descent amount are added together to obtain the final differentiated descent amount of the target jacking point.

[0125] Furthermore, differentiated descent commands are issued to the hydraulic control devices at each jacking point, and each jacking point executes the descent operation according to the received specific descent value. During the descent, deflection monitoring devices deployed at each jacking point collect deflection data in real time at a frequency of 10Hz, and the monitoring terminal automatically calculates the real-time deflection difference between adjacent jacking points (with a spacing of no more than 5 meters). All descent operation data and deflection difference data are displayed in real time on the jacking point distribution map on the monitoring interface. When the deflection difference between adjacent points exceeds 0.05mm, an audible and visual alarm is automatically triggered, and the abnormal data is marked and recorded in the construction database. Throughout the descent process, the operation of each jacking point is synchronized and coordinated to ensure that the space frame structure deforms smoothly under controlled conditions.

[0126] Furthermore, deflection monitoring devices deployed at each jacking point collect deflection difference data between adjacent jacking points (spaced no more than 5 meters apart) in real time at a frequency of 10Hz. The monitoring terminal continuously compares the deflection difference of all adjacent points with a preset difference threshold (usually set to 0.05mm). When the system detects that the deflection difference of all adjacent points is less than 0.05mm for 3 consecutive minutes, it automatically determines that the leveling state has been reached and triggers the following operations: the hydraulic control device immediately locks the current position of each jacking point, the leveling status indicator light on the monitoring interface turns green, and a leveling status report containing the leveling time, final deflection difference, and stable duration is generated and stored in the construction database. All monitoring data are recorded and marked at 0.1-second intervals to complete the automatic determination process of the leveling state.

[0127] S206. Determine a second predetermined descent amount based on the preload and preset safety threshold. When each of the lifting points is in the leveling state, control each of the lifting points to perform synchronous graded descent according to the second predetermined descent amount. During the synchronous graded descent, monitor in real time the load transfer status of the space frame ball node, the load change amount of each of the lifting points, and the overall structural deformation parameters.

[0128] Specifically, based on the preload value (P_pre, unit: kN) and the preset safety threshold (85% of the design load), the specific value is determined by the calculation formula: Second Predetermined Lowering Amount = (P_pre × K_s) / (N × C), where K_s is the safety factor (1.2-1.5), N is the number of stages (determined according to the span of the space frame: 4 stages for <50m, 6 stages for 50-100m, and 8 stages for >100m), and C is the unit load lowering influence coefficient (2.5-3.0 kN / mm). When the monitoring system confirms that the deflection difference at each jacking point is less than 0.05mm for 3 consecutive minutes and reaches the leveling state, the server issues instructions to all jacking equipment to control the hydraulic actuators to perform synchronous staged lowering according to the second predetermined lowering amount (usually 1.0-2.0mm / stage), with each stage lowering interval being 2-3 minutes. During the descent, pressure sensors (range 0-500kN, accuracy ±0.5%FS) positioned at the ball joints of the space frame monitor the load transfer status at a frequency of 10Hz. Force sensors (range 0-1000kN, accuracy ±0.5%FS) at the jacking points collect load changes at each jacking point. Simultaneously, a total station (accuracy ±0.1mm) monitors the overall deformation parameters of the space frame. All monitoring data is transmitted to the server in real time. Work is immediately suspended when the load change exceeds ±10% of the design value or the deformation parameter exceeds 1.15 times the allowable value. Work resumes after adjustments are made and the entire descent is completed. Data is recorded at 0.1-second intervals and graded descent reports are generated.

[0129] S207. When the load transfer state reaches the preset load distribution ratio, the load change is less than the preset load threshold, and the overall structural deformation parameters are within the preset safety range, the unloading construction is determined to be completed.

[0130] Specifically, when the server detects that the pressure sensor data at the spherical nodes of the space frame reaches the preset load distribution ratio (usually 90%-95% of the design load), the load change displayed by the force sensors at each lifting point is less than the preset load threshold (usually ±5% of the design value) for 5 consecutive minutes, and the overall structural deformation parameters (including deflection and displacement) measured by the total station are all within the preset safety range (deflection ≤ 1.15 times the design value, displacement ≤ 1.1 times the design value), the server automatically determines that the unloading construction is complete. It then sends a final locking command to all lifting equipment, permanently locking the current position in the hydraulic system. The monitoring interface displays the unloading completion status and generates an unloading completion report containing the final load distribution, deformation data, and acceptance timestamp, which is then stored in the database. Simultaneously, an audible and visual alarm is triggered to notify on-site personnel that the unloading operation has ended, and all equipment enters standby mode.

[0131] This embodiment also discloses a construction system for synchronous unloading at all lifting points. Figure 3This is a schematic diagram of a construction system for synchronous unloading at all lifting points, as disclosed in an embodiment of this application. Figure 3 As shown, the system includes

[0132] The actual measurement and acquisition module 301 is used to measure the structural parameters of the grid ball nodes at each jacking point and the on-site elevation of each jacking point, and to obtain the actual measurement data of each jacking point.

[0133] The pipe fitting adjustment module 302 is used to adjust the length of the supporting pipe fitting of the lifting equipment corresponding to each of the lifting points based on the measured data, so as to obtain the adjusted lifting equipment.

[0134] The pre-compression processing module 303 is used to calculate the pre-compression load based on the structural parameters and the adjusted jacking device, and apply the pre-compression load to the adjusted jacking device to obtain the pre-compressed jacking device.

[0135] The synchronous descent judgment module 304 is used to control each of the jacking points on the pre-compressed jacking device to descend synchronously according to a first predetermined descent amount and to monitor it to obtain the initial contact state.

[0136] The deflection leveling module 305 is used to monitor the deflection data of each of the lifting points in the initial contact state, and to differentiate the descent process of each of the lifting points based on the deflection data to obtain a leveling state.

[0137] The graded monitoring module 306 is used to determine a second predetermined descent amount based on the preload and the preset safety threshold. When each of the lifting points is in the leveling state, it controls each of the lifting points to perform synchronous graded descent according to the second predetermined descent amount. During the synchronous graded descent, it monitors in real time the load transfer status of the space frame ball node, the load change amount of each of the lifting points, and the overall structural deformation parameters.

[0138] The unloading judgment module 307 is used to determine that the unloading construction is completed when the load transfer state reaches the preset load distribution ratio, the load change is less than the preset load threshold, and the overall structural deformation parameters are within the preset safety range.

[0139] Optional, the pipe fitting adjustment module 302 is specifically used for:

[0140] Calculate the target adjustment length of each supporting pipe based on the elevation difference between the site elevation and the preset space frame design elevation;

[0141] The actual length of each supporting pipe is adjusted to the target adjustment length using the length adjustment mechanism on the lifting equipment.

[0142] The lengths of each of the adjusted support pipes are remeasured to obtain the remeasured values. When the deviation between the remeasured values ​​and the target adjustment length is within a preset error range, the adjusted lifting device is obtained.

[0143] Optional, the pre-compression module 303 is specifically used for:

[0144] Based on the adjusted rated bearing capacity of the lifting equipment, the self-weight parameter in the structural parameters, and the preset safety factor, the preload is calculated and determined.

[0145] The preload is divided into multiple load levels based on a preset number of levels. The load is applied to the adjusted lifting equipment in stages according to the multiple load levels, and the compression deformation of each supporting pipe under the target load level is monitored.

[0146] When the difference between any two adjacent compression deformations is within a preset stability threshold, the adjusted lifting device under the target load level is determined to be in a stable state, and the next level of the target load level is applied until the last level of the target load level is applied.

[0147] After completing the final stage of graded application, the pre-compressed lifting device is obtained.

[0148] Optionally, the pre-compression module 303 is also used for:

[0149] The rated bearing capacity is compared with the self-weight parameter, and the smaller value between the rated bearing capacity and the self-weight parameter is used as the reference load.

[0150] Multiply the reference load by the preset safety factor to obtain the preliminary preload value;

[0151] Based on the preset structural deformation control parameters and preset load distribution uniformity parameters, the preliminary preload value is corrected using a linear interpolation algorithm to obtain the preload.

[0152] Optional, the synchronous degradation judgment module 304 is specifically used for:

[0153] Based on the structural parameters, the preset initial contact safety distance, and the minimum adjustment accuracy of the pre-compressed lifting device, the first predetermined descent amount is determined;

[0154] The lifting points on the pre-compressed lifting device are controlled to descend synchronously at a preset rate, and the actual descent amount of each lifting point is monitored in real time.

[0155] When the actual descent amount reaches the first predetermined descent amount, the descent operation of each of the lifting points is stopped, and the contact pressure and relative displacement change rate of each of the grid ball nodes are monitored.

[0156] If all the contact pressures reach the preset contact threshold and all the relative displacement change rates are lower than the preset stability threshold, then the initial contact state is obtained.

[0157] Optionally, the synchronous degradation module 304 is also used for:

[0158] The theoretical descent is obtained by subtracting the initial contact safety distance from the elevation difference between the on-site elevation and the preset space frame design elevation.

[0159] The first predetermined descent amount is obtained by rounding the theoretical descent amount upward to the smallest integer multiple of the minimum adjustment precision.

[0160] Optional, the deflection leveling module 305 is specifically used for:

[0161] Monitor the deflection data of each of the lifting points, and the deflection difference between two adjacent lifting points;

[0162] The deflection data is compared with the preset deflection reference value to obtain the deflection deviation value of each lifting point;

[0163] The base descent is obtained by multiplying the deflection deviation value of the target jacking point by a preset first proportional coefficient, and the compensation descent is obtained by multiplying the maximum deflection difference value by a preset second proportional coefficient. The maximum deflection difference value is the maximum absolute value of the deflection difference between the target jacking point and all adjacent jacking points. The base descent is added to the compensation descent to obtain the differentiated descent of the target jacking point. The target jacking point is any one of the jacking points.

[0164] Control each of the lifting points to perform a descent operation according to the corresponding differentiated descent amount, and simultaneously monitor the adjacent deflection difference of each of the lifting points;

[0165] When all adjacent deflection differences are less than a preset difference threshold, the leveling state is determined to be reached.

[0166] This embodiment also discloses an electronic device, as shown in the reference. Figure 4The electronic device may include: at least one processor 401, at least one communication bus 402, a user interface 403, a network interface 404, and at least one memory 405. The communication bus 402 is used to enable communication between these components. The user interface 403 may include a display screen or a camera; optionally, the user interface 403 may also include a standard wired interface or a wireless interface. The network interface 404 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The processor 401 may include one or more processing cores. The processor 401 connects to various parts of the server using various interfaces and lines, and performs various functions of the server and processes data by running or executing instructions, programs, code sets, or instruction sets stored in the memory 405, and by calling data stored in the memory 405. Optionally, the processor 401 may be implemented using at least one hardware form selected from Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). Processor 401 may integrate one or more of the following: a central processing unit (CPU), a graphics processing unit (GPU), and a modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the content required for display; and the modem handles wireless communication. It is understood that the modem may also be implemented as a separate chip, without being integrated into processor 401.

[0167] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0168] The foregoing description is merely an exemplary embodiment of this disclosure and should not be construed as limiting the scope of this disclosure. Any equivalent changes and modifications made in accordance with the teachings of this disclosure shall still fall within the scope of this disclosure. Other embodiments of this disclosure will be readily apparent to those skilled in the art upon consideration of the disclosure in this specification. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not described in this disclosure. The specification and embodiments are to be considered exemplary only, and the scope and spirit of this disclosure are defined by the claims.

Claims

1. A construction method of full-jacking point synchronous unloading, characterized in that, Applied to a server, the method includes: Measure the structural parameters of the spherical nodes of the grid structure at each jacking point and the on-site elevation of each jacking point to obtain the measured data of each jacking point; Based on the measured data, the length of the supporting pipe of the lifting equipment corresponding to each lifting point is adjusted to obtain the adjusted lifting equipment. The preload is calculated based on the structural parameters and the adjusted lifting device. The preload is then applied to the adjusted lifting device to obtain the preloaded lifting device. The lifting points on the pre-compressed lifting device are controlled to descend synchronously by a first predetermined descent amount and monitored to obtain the initial contact state. In the initial contact state, the deflection data of each of the lifting points is monitored, and the descent process of each of the lifting points is differentiated and controlled according to the deflection data to obtain the leveling state; The second predetermined descent amount is determined based on the preload and the preset safety threshold. When each of the lifting points is in the leveling state, the lifting points are controlled to perform synchronous graded descent according to the second predetermined descent amount. During the synchronous graded descent, the load transfer status of the space frame ball node, the load change amount of each lifting point, and the overall structural deformation parameters are monitored in real time. When the load transfer state reaches the preset load distribution ratio, the load change is less than the preset load threshold, and the overall structural deformation parameters are within the preset safety range, the unloading construction is determined to be completed.

2. The method of claim 1, wherein, Based on the measured data, the length of the support pipe of the lifting equipment corresponding to each lifting point is adjusted to obtain the adjusted lifting equipment, which includes: Calculate the target adjustment length of each supporting pipe based on the elevation difference between the site elevation and the preset space frame design elevation; The actual length of each supporting pipe is adjusted to the target adjustment length using the length adjustment mechanism on the lifting equipment. The lengths of each of the adjusted support pipes are remeasured to obtain the remeasured values. When the deviation between the remeasured values ​​and the target adjustment length is within a preset error range, the adjusted lifting device is obtained.

3. The method of claim 1, wherein, The step of calculating the preload based on the structural parameters and the adjusted lifting device, and applying the preload to the adjusted lifting device to obtain the preloaded lifting device includes: Based on the adjusted rated bearing capacity of the lifting equipment, the self-weight parameter in the structural parameters, and the preset safety factor, the preload is calculated and determined. The preload is divided into multiple load levels based on a preset number of levels. The load is applied to the adjusted lifting equipment in stages according to the multiple load levels, and the compression deformation of each support pipe under the target load level is monitored. When the difference between any two adjacent compression deformations is within a preset stability threshold, the adjusted lifting device under the target load level is determined to be in a stable state, and the next level of the target load level is applied until the last level of the target load level is applied. After completing the final stage of graded application, the pre-compressed lifting device is obtained.

4. The method of claim 3, wherein, The calculation and determination of the preload based on the adjusted rated bearing capacity of the lifting equipment, the self-weight parameter in the structural parameters, and the preset safety factor includes: The rated bearing capacity is compared with the self-weight parameter, and the smaller value between the rated bearing capacity and the self-weight parameter is used as the reference load. Multiply the reference load by the preset safety factor to obtain the preliminary preload value; Based on the preset structural deformation control parameters and preset load distribution uniformity parameters, the preliminary preload value is corrected using a linear interpolation algorithm to obtain the preload.

5. The method according to claim 1, characterized in that, The process of controlling each lifting point on the pre-compressed lifting device to descend synchronously according to a first predetermined descent amount and monitoring it to obtain the initial contact state includes: Based on the structural parameters, the preset initial contact safety distance, and the minimum adjustment accuracy of the pre-compressed lifting device, the first predetermined descent amount is determined; The lifting points on the pre-compressed lifting device are controlled to descend synchronously at a preset rate, and the actual descent amount of each lifting point is monitored in real time. When the actual descent amount reaches the first predetermined descent amount, the descent operation of each of the lifting points is stopped, and the contact pressure and relative displacement change rate of each of the grid ball nodes are monitored. If all the contact pressures reach the preset contact threshold and all the relative displacement change rates are lower than the preset stability threshold, then the initial contact state is obtained.

6. The method according to claim 5, characterized in that, The determination of the first predetermined descent amount based on the structural parameters, the preset initial contact safety distance, and the minimum adjustment accuracy of the pre-compressed lifting device includes: The theoretical descent is obtained by subtracting the initial contact safety distance from the elevation difference between the on-site elevation and the preset space frame design elevation. The first predetermined descent amount is obtained by rounding the theoretical descent amount upward to the smallest integer multiple of the minimum adjustment precision.

7. The method according to claim 1, characterized in that, The step of monitoring the deflection data of each of the lifting points in the initial contact state, and differentially controlling the descent process of each of the lifting points based on the deflection data to obtain the leveling state includes: Monitor the deflection data of each of the lifting points, and the deflection difference between each of the two adjacent lifting points; The deflection data is compared with the preset deflection reference value to obtain the deflection deviation value of each lifting point; The base descent is obtained by multiplying the deflection deviation value of the target jacking point by a preset first proportional coefficient, and the compensation descent is obtained by multiplying the maximum deflection difference value by a preset second proportional coefficient. The maximum deflection difference value is the maximum absolute value of the deflection difference between the target jacking point and all adjacent jacking points. The base descent is added to the compensation descent to obtain the differentiated descent of the target jacking point. The target jacking point is any one of the jacking points. Control each of the lifting points to perform a descent operation according to the corresponding differentiated descent amount, and simultaneously monitor the adjacent deflection difference of each of the lifting points; When all adjacent deflection differences are less than a preset difference threshold, the leveling state is determined to be reached.

8. A full-lifting-point synchronous lowering unloading construction system, characterized in that, Specifically, it includes: The actual measurement and acquisition module is used to measure the structural parameters of the grid ball nodes at each jacking point and the on-site elevation of each jacking point, and to obtain the actual measurement data of each jacking point. The pipe fitting adjustment module is used to adjust the length of the supporting pipe fitting of the lifting equipment corresponding to each of the lifting points based on the measured data, so as to obtain the adjusted lifting equipment. The preloading processing module is used to calculate the preloading load based on the structural parameters and the adjusted lifting equipment, and apply the preloading load to the adjusted lifting equipment to obtain the preloaded lifting equipment. The synchronous descent judgment module is used to control each of the jacking points on the pre-compressed jacking device to descend synchronously according to a first predetermined descent amount and to monitor it to obtain the initial contact state. The deflection leveling module is used to monitor the deflection data of each of the lifting points in the initial contact state, and to differentiate and control the descent process of each of the lifting points based on the deflection data to obtain a leveling state. The graded monitoring module is used to determine the second predetermined descent amount based on the preload and the preset safety threshold. When each of the lifting points is in the leveling state, it controls each of the lifting points to perform synchronous graded descent according to the second predetermined descent amount. During the synchronous graded descent, it monitors in real time the load transfer status of the space frame ball node, the load change amount of each of the lifting points, and the overall structural deformation parameters. The unloading judgment module is used to determine that the unloading construction is completed when the load transfer state reaches the preset load distribution ratio, the load change is less than the preset load threshold, and the overall structural deformation parameters are within the preset safety range.

9. An electronic device, characterized in that, The device includes a processor, a memory, a user interface, and a network interface. The memory is used to store instructions. The user interface and the network interface are both used to communicate with other devices. The processor is used to execute the instructions stored in the memory to cause the electronic device to perform the method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed, perform the method as described in any one of claims 1-7.

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