High-speed rail large-span continuous beam linear whole-process control method
By collecting and analyzing the structural parameters of the continuous beam in real time, and correcting elevation fluctuations, stress disturbances, and tension control, the problem of alignment deviation caused by small elevation differences, stress release, and temperature changes in the construction of large-span continuous beams for high-speed railways has been solved by traditional alignment control methods, thus achieving high-precision and stable alignment control.
Patent Information
- Application Number
- CN202511876427.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-03-17
AI Technical Summary
Existing traditional alignment control methods cannot effectively identify minute elevation changes, deviations caused by stress release, tensioning sequence shifts, and uneven stress distribution caused by temperature changes in the construction of long-span continuous beams for high-speed railways. This leads to the accumulation of alignment deviations, affecting construction accuracy and structural safety.
By collecting continuous beam structure parameter data in real time, we can identify elevation fluctuation interference, leveling control, stress interference correction, tension offset correction, tension control calibration, and zero-point offset compensation, and construct a control strategy to achieve full-process alignment control.
It reduces the linear elevation fluctuation error caused by uneven assembly of the hanging basket template, reduces the instantaneous error caused by stress release behavior, adjusts the camber of the tensioning operation section, improves the tensioning control accuracy under temperature change scenarios, reduces zero-point drift interference, and improves the stability and data reliability of long-period structure linear control.
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Figure CN121680067A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of process control, and more particularly, to a high-speed rail long-span continuous beam linear whole-process control method. BACKGROUND
[0002] As an important form of long-span bridge structure, continuous beams are widely used in major transportation infrastructure construction such as urban rail transit due to their large structural stiffness, good driving smoothness, and superior overall performance. Linear control is a core technical link in the construction process of continuous beams, directly affecting the geometric accuracy and structural safety performance of the completed bridge. The traditional linear control method commonly used in engineering practice can achieve conventional linear control functions, but is often limited in more complex construction scenarios and still faces many technical bottlenecks.
[0003] During the hanging basket cantilever pouring construction phase, there are often millimeter-level minor unevenness in the local formwork assembly of the pouring opening, and the existing traditional linear control method lacks fine identification of the minor height difference mutation in this area, resulting in the gradual formation of irreversible linear steps from this error. For example, a 1 to 2 millimeter height difference jump may occur within a 10 centimeter pouring opening range, and the traditional linear control method lacks fine identification of the minor height difference mutation in this area. In addition, in the construction joint connection area, the stress release process usually lasts for 5 to 15 minutes, during which local rebound or displacement deviation of about 1 to 2 millimeters may occur. However, the traditional linear control method often ignores this slight deviation caused by stress release, considering that there is no significant change in the structure, and long-term accumulation causes significant linear deviation. At the same time, the sequence of tensioning operations often deviates due to factors such as on-site manpower allocation or equipment failure, for example, the upper arch amount at the beam end exceeds the expected value due to pre-tensioning or missing tensioning. The traditional linear control method lacks dynamic control of the tensioning sequence, which can easily cause irreversible deformation such as over-arching or negative arching in local areas. On the other hand, the traditional linear control method lacks dynamic control of temperature, for example, pre-stress loss increases significantly during construction in high-temperature weather, but the target tensioning amount is not dynamically adjusted according to the change in environmental temperature, resulting in uneven actual stress distribution and exacerbation of the linear deviation of the completed bridge. Since the zero-point drift phenomenon is common in monitoring equipment, the traditional linear control method only adjusts based on relative changes and ignores minor baseline drift, resulting in cumulative errors that are getting larger and larger but cannot be self-aware, which seriously affects the construction accuracy of the continuous beam and indirectly causes linear deviation.
[0004] In view of this, the present application proposes a high-speed rail long-span continuous beam linear whole-process control method to solve the above problems. SUMMARY
[0005] In order to overcome the above-mentioned defects of the prior art, in order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a high-speed rail long-span continuous beam linear whole-process control method, comprising:
[0006] S1. Real-time acquisition of continuous beam structure parameter data and data cleaning, obtaining continuous beam construction data;
[0007] S2. Identify the elevation fluctuation interference of the continuous beam construction data, and output the high difference mutation area; based on the high difference mutation area, perform leveling control on the continuous beam construction data to obtain leveling correction data;
[0008] S3. Stress interference correction is performed on the leveling correction data to obtain the disturbance correction linear data;
[0009] S4. Real-time acquisition of tensioning plan information, based on the disturbance correction linear data, the tensioning plan information is corrected for tensioning offset to generate tensioning correction parameter data;
[0010] S5. Collect construction climate data, based on the construction climate data, perform tensioning control calibration on the tensioning correction parameter data to output calibrated control stress data;
[0011] S6. Perform zero point offset compensation on the calibrated control stress data and the disturbance correction linear data to output the repair offset process monitoring data;
[0012] S7. Construct a control strategy based on the repair offset process monitoring data, and send the control strategy to a preset construction control terminal.
[0013] Further, the method of identifying the elevation fluctuation interference comprises:
[0014] Extract the structure elevation measurement value in the hanging basket pouring opening area of the continuous beam construction data and construct an elevation measurement value sequence, divide the elevation measurement value sequence into small sections to obtain a unit elevation division interval;
[0015] Extract the center point elevation value of the continuous measurement point in a single unit elevation division interval and the elevation value of the adjacent measurement point of the point; calculate the elevation difference of the two adjacent measurement points and the center point elevation value respectively, draw the elevation polyline segment based on the elevation difference; calculate the polyline angle of the elevation polyline segment, if the polyline angle is less than a preset mutation angle threshold, the corresponding unit elevation division interval is determined as a candidate high difference abnormal interval;
[0016] The continuous candidate high difference abnormal interval is taken as a first high difference mutation section, a sliding average function is constructed to calculate the sliding average value of all measurement points in the first high difference mutation section, and a smooth fitting curve is drawn based on the sliding average value; calculate the residual extreme value difference of each sampling point of the smooth fitting curve, if the residual extreme value difference exceeds a preset fitting residual range interval, the corresponding first high difference mutation section is determined as a high difference mutation area.
[0017] Further, the method of performing leveling control comprises:
[0018] The difference between the original elevation measurement value and the theoretical elevation value of each measuring point in the high difference mutation area is calculated to obtain a leveling target offset, and a mapping relationship between the measuring point number and the leveling target offset is established;
[0019] The signs of all leveling target offsets are identified, and the number of positive offsets and the number of negative offsets are counted based on the signs; if the number of positive offsets is higher than a preset proportion of the total offsets, it is determined as an upward trend, and if the number of negative offsets is higher than a preset proportion of the total offsets, it is determined as a downward trend;
[0020] The extreme values in the absolute values of all leveling target offsets are removed and an arithmetic mean is calculated, and the absolute value of the arithmetic mean is taken as an adjustment amount, and an upper limit of adjustment is set; if it is in an upward trend, the adjustment amount is negated and taken as a downward adjustment amount of all original elevation measurement values; if it is in a downward trend, the adjustment amount is taken as an upward adjustment amount of all original elevation measurement values, and if the absolute values of the downward adjustment amount and the upward adjustment amount exceed the upper limit of adjustment, the upper limit of adjustment is taken as the adjustment amount;
[0021] The adjustment amount is bound with the corresponding measuring point number and spatial position, and a high-precision measurement unit is unified to obtain elevation correction data of the hanging basket pouring opening area as a pouring template reference value; the elevation correction data and the remaining data are integrated to obtain leveling correction data.
[0022] Further, the stress interference correction method comprises:
[0023] The joint stress data in the leveling correction data is extracted, and a sampling period is set to continuously collect real-time data; a joint stress data sequence is constructed, and the stress change rate of adjacent sampling points in the joint stress data sequence is calculated;
[0024] The stress data sequence is traversed using a sliding window, and the total stress change in each sliding window is counted; if the stress change rate in a continuous sliding window continuously exceeds a preset stress change threshold, and the total stress change is greater than a stress release lower limit, the time segment formed by the corresponding sliding window is determined as a stress release segment;
[0025] The range of the maximum stress value and the minimum stress value in the stress release segment is calculated, the duration of the stress release segment is counted, and the ratio of the range to the duration is taken as a disturbance influence coefficient; the stress value of the stress release segment is linearly adjusted based on the disturbance influence coefficient to obtain a disturbance correction value; if the range is less than a range lower limit or the duration is less than a response time threshold, the stress correction is not triggered;
[0026] The original joint stress data is algebraically replaced by the disturbance correction value to obtain corrected stress data, and the corrected stress data and the remaining data are integrated to obtain disturbance correction linear data.
[0027] Further, the tensioning plan information comprises: a tensioning operation section number, a tensioning starting time, a planned tensioning sequence, a planned tensioning duration, a tension limit interval, a tensioning section position coordinate, and a predicted tensioning camber.
[0028] Further, the tensioning offset correction manner comprises:
[0029] Based on the tensioning section position coordinate and the tensioning operation section number, the perturbation correction linear data is matched to output linear data related to the same tensioning operation section, and the tensioning section linear data is obtained;
[0030] Based on the tensioning section linear data, a correction elevation curve is drawn, and an elevation camber group is constructed based on the predicted tensioning camber; the correction elevation curve is compared with the corresponding elevation value in the elevation camber group, and a camber elevation difference is output; if the camber elevation difference is higher than a preset upper camber limit, it is determined that the camber is excessive, and if it is lower than a preset lower camber limit, it is determined that the camber is insufficient;
[0031] Based on the absolute value of the camber elevation difference, a tensioning correction function is constructed, and the tensioning control force value is calculated for the tensioning section with excessive camber or insufficient camber by using the tensioning correction function; the tensioning control force value is matched with the tension limit interval, and if it is out of the interval range, the interval boundary value closest to the tensioning control force value at this time is taken as a new tensioning control force value;
[0032] Meanwhile, the tensioning sequence is reconstructed based on the absolute value of the camber elevation difference, and a modified tensioning sequence number sequence is obtained; the planned tensioning duration is adjusted based on the camber elevation difference of each tensioning operation section, and the starting time of each tensioning operation section is adjusted based on the modified tensioning sequence number sequence and the planned tensioning duration;
[0033] The tensioning correction parameter data is obtained by integrating all the adjusted tensioning plan information.
[0034] Further, the tensioning control calibration manner comprises:
[0035] The environmental temperature data of the time section in which the tensioning operation section is located is extracted from the construction climate data, and the temperature sensitive coefficient is obtained by querying the continuous beam material attribute information; the stress loss estimation value is calculated based on the environmental temperature data and the temperature sensitive coefficient, and if the stress loss estimation value is higher than a preset loss threshold, stress compensation is triggered;
[0036] The bridge site structure of the continuous beam is identified, and the stress sensitive grade of each tensioning operation section is matched based on the known engineering specification for each bridge site structure;
[0037] The sum of the absolute value of the tension control force value and the stress loss estimation value is calculated to obtain a target tensioning amount, and if the target tensioning amount exceeds the tension limit interval, it is limited to the interval boundary value; the stress sensitivity level is converted into a sensitivity ratio, and the product of the target tensioning amount and the sensitivity ratio is calculated as the compensation tensioning amount corresponding to the tensioning operation section;
[0038] The temperature change rate of the corresponding tensioning operation section is calculated based on the environmental temperature data, and if the temperature change rate is higher than the preset temperature rise threshold, the temperature change rate is reduced to a preset temperature proportion of the original rate; at the same time, the planned tensioning duration of the corresponding tensioning operation section is proportionally extended based on the proportion of the stress loss estimation value and the original tensioning control force value, and the tensioning start time of each tensioning operation section is adjusted synchronously;
[0039] The calibrated tensioning correction parameter data is used as calibration control stress data.
[0040] Further, the way of performing zero point offset compensation includes:
[0041] The sensor device number of the corresponding measuring point in the calibration control stress data and the disturbance correction linear data is matched to obtain the original installation zero position elevation coordinate of the sensor device stored in the management database; the measured elevation coordinate of the current corresponding sensor device is identified, and the offset distance between the original installation zero position elevation coordinate and the measured elevation coordinate is calculated;
[0042] If the offset distance of the continuous measuring point is higher than the preset zero point offset threshold and continuously increases, it is determined that zero point drift occurs in the continuous measuring point, and offset compensation is triggered;
[0043] The elevation value of each measuring point in the disturbance correction linear data is incrementally rolled back using the offset distance to obtain adjusted disturbance correction linear data; at the same time, the offset distance is stress-converted to output a stress offset, and the stress offset is used to perform incremental rollback on the stress value of each measuring point in each tensioning operation section in the calibration control stress data to obtain adjusted calibration control stress data;
[0044] The adjusted disturbance correction linear data and the adjusted calibration control stress data are integrated to obtain repair offset process monitoring data.
[0045] Further, the way of constructing the control strategy includes:
[0046] The repair offset process monitoring data is encoded into a parameter set and a control instruction sequence, a data structure body is constructed to store the parameter set and the control instruction sequence, a control strategy is obtained and sent to a preset construction control terminal for application.
[0047] The high-speed rail long-span continuous beam linear whole-process control system is used to realize the high-speed rail long-span continuous beam linear whole-process control method, and is characterized by comprising:
[0048] a data collection module, configured to collect continuous beam structure parameter data in real time and perform data cleaning to obtain continuous beam construction data;
[0049] a height difference leveling module, configured to identify elevation fluctuation interference of the continuous beam construction data and output a height difference mutation region; and perform leveling control on the continuous beam construction data based on the height difference mutation region to obtain leveling correction data;
[0050] a stress correction module, configured to perform stress interference correction on the leveling correction data to obtain disturbance correction linear data;
[0051] a tension correction module, configured to obtain tension plan information in real time, perform tension offset correction on the tension plan information based on the disturbance correction linear data, and generate tension correction parameter data;
[0052] a control calibration module, configured to collect construction climate data, perform tension control calibration on the tension correction parameter data based on the construction climate data, and output calibrated control stress data;
[0053] an offset compensation module, configured to perform zero-point offset compensation on the calibrated control stress data and the disturbance correction linear data, and output repair offset process monitoring data;
[0054] a strategy generation module, configured to construct a control strategy based on the repair offset process monitoring data and send the control strategy to a preset construction control terminal; and the modules are connected through wired and / or wireless modes.
[0055] The high-speed rail large-span continuous beam linear full-process control method has the following technical effects and advantages:
[0056] The continuous beam construction data is obtained by collecting continuous beam structure parameter data in real time and performing data cleaning; the continuous beam construction data is used to perform elevation fluctuation interference identification, leveling control, stress interference correction, tension offset correction, tension control calibration and zero-point offset compensation, so that the continuous beam construction process linear full-process control method is realized; compared with the existing experience, the elevation broken line angle mutation of the hanging basket pouring opening region is identified and leveling control is performed, so that the linear elevation jump error caused by uneven hanging basket template assembly is reduced; the stress release section of the structure joint connection is identified and linear correction is performed, so that the linear instantaneous error caused by short-time stress release behavior is reduced; the camber of each tension operation section is adjusted, so that the camber abnormality caused by tension sequence offset or force out of control is reduced; the tension control calibration is performed, so that the tension control precision in the temperature change scene is improved, and the compensation of the elevation and the stress is realized; the zero-point drift phenomenon is judged and removed, so that the drift interference is reduced and the stability and data reliability of the long-period structure linear control are improved. BRIEF DESCRIPTION OF DRAWINGS
[0057] Figure 1 It is a high-speed rail large-span continuous beam line shape whole process control method schematic diagram of the present application;
[0058] Figure 2 It is a high-speed rail large-span continuous beam line shape whole process control system schematic diagram of the present application. DETAILED DESCRIPTION
[0059] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0060] Embodiment 1
[0061] Please refer to Figure 1 The high-speed rail large-span continuous beam line shape whole process control method described in the embodiment includes:
[0062] S1. Real-time acquisition of continuous beam structure parameter data and data cleaning, to obtain continuous beam construction data;
[0063] S2. The continuous beam construction data is subjected to elevation fluctuation disturbance identification, and the elevation difference mutation area is output. Based on the elevation difference mutation area, the continuous beam construction data is subjected to leveling control to obtain leveling correction data;
[0064] S3. The leveling correction data is subjected to stress disturbance correction to obtain disturbance correction line shape data;
[0065] S4. Real-time acquisition of tensioning plan information, based on the disturbance correction line shape data, the tensioning plan information is subjected to tensioning offset correction to generate tensioning correction parameter data;
[0066] S5. Acquisition of construction climate data, based on the construction climate data, the tensioning correction parameter data is subjected to tensioning control calibration to output calibration control stress data;
[0067] S6. The calibration control stress data and the disturbance correction line shape data are subjected to zero point offset compensation to output repair offset process monitoring data;
[0068] S7. Based on the repair offset process monitoring data, a control strategy is constructed, and the control strategy is sent to a preset construction control terminal.
[0069] The continuous beam structure parameter data in the embodiment includes data reflecting the expected theoretical bridge body geometry in the construction process, such as the length, width, elevation and bridge body structure stage of the target long-span continuous beam, and the continuously monitored parameters in the construction process collected by the sensing device arranged on the bridge body, such as stress; the data cleaning is realized by the missing value filling and filtering processing, and the continuous beam construction data with higher quality is obtained.
[0070] The method for identifying the elevation fluctuation interference includes:
[0071] The structure elevation measurement value in the continuous beam construction data located in the hanging basket pouring opening area is extracted, and an elevation measurement value sequence is constructed, and the elevation measurement value sequence is divided into small sections to obtain a unit elevation division interval.
[0072] The structure elevation measurement value is the elevation value in the hanging basket pouring opening area on the bridge body which belongs to the hanging basket pouring formwork, and the elevation values of each measurement point are sorted in order to obtain the elevation measurement value sequence; the measurement points contained therein are evenly divided based on the length of the hanging basket pouring opening area, and are divided into several small sections, wherein the length of the small section is set according to the size of the preset hanging basket pouring formwork, for example, 10 cm is set as a small section, and the specific length is set by the person skilled in the art based on historical division experience, which can guide the subsequent operation to focus on the small changes.
[0073] The center point elevation value of the continuous measurement point in a single unit elevation division interval and the elevation values of the adjacent measurement points of the point are extracted, wherein the elevation value of the center point in the entire unit elevation division interval is extracted, and the corresponding elevation values of the measurement points before and after the center point are selected.
[0074] The elevation difference between the two adjacent measurement points and the center point elevation value is calculated respectively, and the elevation polyline segment is drawn based on the elevation difference, wherein since the smallest unit of the polyline segment is three points, the elevation values of the center point and its adjacent two points are taken as the three points of the polyline segment, and the three points are connected to obtain the elevation polyline segment.
[0075] The polyline angle of the elevation polyline segment is calculated, if the polyline angle is less than a preset mutation angle threshold, the corresponding unit elevation division interval is determined as a candidate high difference abnormal interval, wherein the slope of any two points is calculated based on the elevation difference, and the polyline angle is simplified and calculated based on the slope; at the same time, the preset mutation angle threshold is set based on the historical interference identification experience, the larger the polyline angle, the more gentle the change, and the smaller the polyline angle, the more dramatic the change, and the corresponding unit elevation division interval with the polyline angle less than the preset mutation angle threshold is determined as the candidate high difference abnormal interval.
[0076] The continuous candidate height difference abnormal interval is taken as a first height difference mutation section, a moving average function is constructed to calculate the moving average values of all measuring points in the first height difference mutation section, and a smooth fitting curve is drawn based on the moving average values, wherein the continuous candidate height difference abnormal intervals are screened, and the section formed by the intervals is taken as the first height difference mutation section; in the embodiment, the moving average function is a weighted moving average function (WMA), the moving average values of each measuring point are calculated by using the function, and the moving average values are drawn as the smooth fitting curve, the noise of extreme errors is eliminated by using the moving average, and the overall height change trend is shown by using the smooth fitting curve.
[0077] The residual extreme value difference of each sampling point of the smooth fitting curve is calculated, and if the residual extreme value difference exceeds a preset fitting residual range interval, the corresponding first height difference mutation section is determined as a height difference mutation area, wherein the residual extreme value difference refers to the difference between the maximum residual and the minimum residual in all sampling points, if the difference is higher than the upper limit of the fitting residual range interval set based on historical fitting experience, it indicates that there is an elevation abnormality that needs to be intervened, and therefore the corresponding first height difference mutation section is determined as the height difference mutation area.
[0078] The leveling control is performed in the following manner:
[0079] The difference between the original elevation measurement value and the theoretical elevation value of each measuring point in the height difference mutation area is calculated to obtain a leveling target offset, and a mapping relationship between the measuring point number and the leveling target offset is established, wherein the theoretical elevation value in the plan is obtained based on the continuous girder linear engineering specification data, the original elevation measurement value refers to the elevation value in the local formwork of the basket pouring opening in the initially extracted continuous girder construction data, the offset degree of each measuring point relative to the ideal linear is quantified by calculating the leveling target offset, and each leveling target offset is matched with the corresponding measuring point to prevent the confusion of the measuring points in subsequent operations.
[0080] The signs of all the leveling target offsets are identified, and the number of positive offsets and the number of negative offsets are counted based on the signs, wherein the signs are identified and marked positive and negative because the leveling target offsets have positive and negative values; the negative offsets exist based on the signs, and vice versa.
[0081] If the number of positive offsets is higher than a preset proportion of the total offsets, it is determined as an upward trend, and if the number of negative offsets is higher than the preset proportion of the total offsets, it is determined as a downward trend, wherein a preset proportion is set based on historical leveling control experience, the ratio of the number of positive offsets and the number of negative offsets to the total amount of all the leveling target offsets is calculated, if the ratio of the number of positive offsets to the total amount is higher than the preset proportion, it indicates that the deviation degree is in the positive direction of increasing, and if the ratio of the number of negative offsets to the total amount is higher than the preset proportion, it indicates that the overall trend of the deviation degree is in the negative direction of decreasing.
[0082] Remove all leveling target offset absolute value of the extreme value and arithmetic average, the absolute value of the arithmetic average as the adjustment, while setting the adjustment upper limit value, wherein by eliminating extreme value and arithmetic average, avoid a few extreme values affect the overall leveling decision, while setting the adjustment upper limit value based on historical leveling control experience, prevent secondary error caused by excessive adjustment.
[0083] If in the upward trend, the adjustment amount is taken as the opposite, and as all the original elevation measurement value of the down adjustment; if in the downward trend, the adjustment amount as all the original elevation measurement value of the up adjustment, if the absolute value of the down adjustment and the up adjustment exceeds the adjustment upper limit value will be the adjustment upper limit value as the adjustment amount, wherein by using the adjustment amount for reverse compensation to the original elevation data trend smoothing, while increasing the limiting amplitude, to ensure that the presence of the area can be achieved leveling compensation difference mutation.
[0084] The adjustment amount and the corresponding measurement point number and spatial location are bound, and the high-precision measurement unit is unified, and the elevation correction data of the hanging basket pouring mouth area is obtained as the pouring template reference value, wherein the adjustment amount and the corresponding measurement point number and the spatial position coordinates of the measurement point are bound, which is convenient for subsequent corresponding measurement point control and can be accurately corresponding, and the control confusion situation will not appear; unify millimeter as a unified high-precision measurement unit to obtain the elevation correction data belonging to the hanging basket pouring mouth area; the data is used as the reference value of the local template of the hanging basket pouring mouth, guiding the template to execute the control instruction.
[0085] Integrate the elevation correction data and the rest of the data to obtain the leveling correction data.
[0086] The stress interference correction method includes:
[0087] Extract the joint stress data in the leveling correction data, and set a sampling period to continuously collect in real time, wherein the joint stress data refers to the stress response data of the construction joint area in the bridge structure, and the sampling period is set to continuously sample for a suitable length of time. The length of the sampling period can be adjusted based on the specific working condition, as long as it can ensure that enough sampling points are formed to effectively capture the small stress change phenomenon. In this embodiment, the length of the sampling period is set to 15 minutes.
[0088] Construct a joint stress data sequence, and calculate the stress change rate of adjacent sampling points in the joint stress data sequence, wherein the joint stress data sequence is drawn as a curve, and the corresponding stress change rate is obtained by calculating the slope of adjacent sampling points in the curve.
[0089] The stress data sequence is traversed using a sliding window, and the total stress change in each sliding window is counted, wherein the length of the sliding window is set based on historical disturbance correction experience, and the total stress change refers to the sum of the differences between the stress values of the continuous adjacent sampling points in the sliding window.
[0090] If the stress change rate in the continuous sliding window continuously exceeds the preset stress change threshold, and the total stress change is greater than the stress release lower limit, the time section formed by the corresponding sliding window is determined as a stress release section, wherein the preset stress change threshold is set based on historical disturbance correction experience, and the stress release lower limit is set based on the relevant stress knowledge of the continuous beam structure joint; if the stress change rate in the continuous sliding window always remains a large value, and the total stress change is also greater than the minimum stress release lower limit, it indicates that the structural joint stress release phenomenon is continuously occurring in the corresponding time section, and therefore the time section is determined as a stress release section.
[0091] The range of the maximum stress value and the minimum stress value in the stress release section is calculated, the duration of the stress release section is counted, and the ratio of the range to the duration is taken as the disturbance influence coefficient, wherein the range represents the stress release intensity in the stress release section, and by calculating the ratio of the value to the duration, the stress release capacity per unit time is quantified, and the value is taken as the disturbance influence coefficient.
[0092] The stress value of the stress release section is linearly adjusted based on the disturbance influence coefficient to obtain a disturbance correction value, wherein the calculation formula of the linear adjustment is: wherein, F(n) represents the disturbance correction value of the nth sampling point in the stress release section; F represents the stress value of the nth sampling point in the stress release section; σ represents the disturbance influence coefficient; t n (n) represents the stress value of the nth sampling point in the stress release section; σ represents the disturbance influence coefficient; t n (n) represents the time interval between the nth sampling point in the stress release section and the start point of the stress release section; TI represents the duration of the entire stress release section.
[0093] If the range is less than the range lower limit or the duration is less than the response time threshold, the stress correction is not triggered, wherein the range lower limit and the response time threshold are set based on historical disturbance correction experience, and if the range is small, it indicates that the stress release fluctuation is weak, and the duration indicates that the time is insufficient to form a stress deformation response, at this time, in order to avoid excessive control, the stress correction is not triggered for this case.
[0094] The original joint stress data is replaced by the disturbance correction value to obtain corrected stress data, and the corrected stress data is integrated with the remaining data to obtain disturbance correction linear data, wherein the disturbance correction value is used as a new stress value corresponding to the sampling point, the joint stress data in which all the disturbance correction values are replaced is used as the corrected stress data, and the corrected stress data and other data which do not need to be processed are integrated into the disturbance correction linear data.
[0095] The tensioning plan information includes: tensioning operation section number, tensioning starting time, planned tensioning sequence, planned tensioning duration, tensioning force limit interval, tensioning section position coordinates and expected tensioning camber
[0096] The tensioning operation section number is an identifier of a tensioning area on a bridge structure in a construction process, used to mark that the position needs to perform a tensioning task; the tensioning starting time refers to the starting time of performing the tensioning task of each tensioning operation section; the planned tensioning sequence refers to the execution sequence of the tensioning task of the tensioning section in the existing construction plan; the planned tensioning duration refers to the expected working hours of each tensioning operation section; the tensioning force limit interval refers to an interval formed by the upper and lower limit values of the tensioning control force based on the known tensioning construction specification; the tensioning section position coordinates correspond to the spatial position of the tensioning operation section, and can also correspond to the tensioning operation section number; the expected tensioning camber refers to the expected structural camber of each tensioning operation section in the construction plan, reflecting the geometric influence of the tensioning task on the overall bridge linear change.
[0097] The tensioning offset correction mode includes:
[0098] The tensioning section linear data is obtained by matching the tensioning section position coordinates and the tensioning operation section number with the disturbance correction linear data, and outputting linear related data belonging to the same tensioning operation section, wherein all linear related elevation data belonging to the corresponding tensioning operation section is extracted by matching the tensioning section position coordinates and the tensioning operation section number with the disturbance correction linear data, to obtain the tensioning section linear data.
[0099] The corrected elevation curve is drawn based on the tensioning section linear data, and the camber elevation group is constructed based on the expected tensioning camber, and the camber elevation difference is output by comparing the corrected elevation curve with the corresponding elevation value in the camber elevation group, wherein the corrected elevation curve is drawn based on the corrected elevation value in the tensioning section linear data, and the camber elevation group is constructed based on the ideal elevation value of each sampling point in the corresponding tensioning operation section, corresponding to each sampling point in the corrected elevation curve, and the camber elevation difference is obtained by calculating the elevation difference value of each corresponding sampling point.
[0100] If the arch elevation difference is higher than the preset arch upper limit, it is determined that the arch is over-arched, and if it is lower than the preset arch lower limit, it is determined that the arch is under-arched, wherein the arch upper limit and the arch lower limit are set based on the tensioning construction specification, if the arch elevation difference is higher than the preset limit value, it is considered that the arch is over-arched or under-arched, triggering subsequent adjustment of the tensioning control force.
[0101] The tensioning correction function is constructed based on the absolute value of the arch elevation difference, and the tensioning control force value is calculated for the tensioning section that is over-arched or under-arched using the tensioning correction function, wherein the calculation formula of the tensioning correction function is: FL = FL1 ± ω × H; wherein FL represents the tensioning control force value of the sampling point numbered L that is over-arched or under-arched; FL1 represents the original tensioning force of the sampling point numbered L; H represents the absolute value of the arch elevation difference, and the minus sign is taken for over-arched and the plus sign is taken for under-arched; ω represents the weight set based on the historical tensioning correction function construction experience; it should be noted that all variables in the above formula are dimensionless calculations.
[0102] The tensioning control force value is matched with the tension limit interval, and if it exceeds the interval range, the interval boundary value closest to the tensioning control force value at this time is taken as the new tensioning control force value, wherein in order to ensure that the corrected tensioning control force does not exceed the tension limit interval, the tensioning control force that exceeds the interval range is limited to the closest critical value, and the safety of the tensioning process is ensured.
[0103] Meanwhile, the tensioning sequence is reconstructed based on the absolute value of the arch elevation difference, and the modified tensioning sequence number sequence is obtained, wherein the absolute value of the arch elevation difference is arranged in descending order, and the section with a larger arch elevation difference is preferentially selected as the tensioning operation section, that is, the section with a more serious arch deviation is preferentially corrected.
[0104] The planned tensioning duration is adjusted based on the arch elevation difference of each tensioning operation section, and the starting time of each tensioning operation section is adjusted based on the modified tensioning sequence number sequence and the planned tensioning duration, wherein the tensioning duration is linearly adjusted based on the arch elevation difference, that is, the larger the arch deviation degree, the longer the tensioning duration, and the specific adjustment range is set based on historical adjustment experience and can be dynamically adjusted based on specific working conditions; the starting time of each tensioning operation section is synchronously adjusted based on the adjusted tensioning duration and the modified tensioning sequence number sequence.
[0105] The tensioning correction parameter data is obtained by integrating all adjusted tensioning plan information.
[0106] The execution of the tensioning control calibration includes:
[0107] The environmental temperature data of the time section where the tensioning operation section is located in the construction climate data is extracted, and the temperature sensitivity coefficient is inquired from the material attribute information of the continuous beam to calculate the stress loss estimation value based on the environmental temperature data and the temperature sensitivity coefficient. If the stress loss estimation value is higher than the preset loss threshold, stress compensation is triggered, wherein the temperature sensitivity coefficient is determined based on the material attribute information of the continuous beam, and the coefficient is the product of the elastic modulus and the material linear expansion coefficient; the environmental temperature of each tensioning operation section is calculated, and the temperature deviation of the temperature from the ideal temperature of the corresponding material in the engineering specification is calculated, and the stress loss estimation value is obtained by multiplying the temperature deviation and the temperature sensitivity coefficient.
[0108] The bridge site structure of the continuous beam is identified, and the stress sensitive level of each tensioning operation section is matched based on the known engineering specification, wherein the bridge site structure includes, for example, end support section, side span closure section and mid-span standard section, etc. The corresponding bridge site structure of the tensioning operation section is determined based on the known engineering specification knowledge related to each bridge site structure, and the stress sensitive level is matched.
[0109] The sum of the absolute value of the tensioning control force value and the stress loss estimation value is calculated to obtain the target tensioning amount, and if the target tensioning amount exceeds the tension limit interval, it is limited to the interval boundary value, wherein the absolute value of the sum of the original tensioning control force value of the tensioning operation section and the stress loss estimation value is obtained to obtain the expected output tensioning amount, i.e. the target tensioning amount; for the target tensioning amount exceeding the tension limit interval, it is adjusted to the nearest interval boundary value.
[0110] The stress sensitive level is converted into a sensitive proportion, and the product of the target tensioning amount and the sensitive proportion is calculated as the compensation tensioning amount of the corresponding tensioning operation section, wherein different stress sensitive levels correspond to different sensitive proportions, for example, the sensitive proportion of high sensitivity is set to 1.2, the sensitive proportion of medium sensitivity is set to 1, and the sensitive proportion of low sensitivity is set to 0.8. The mapping relationship between the stress sensitive level and the sensitive proportion can be set based on historical control experience, and can be adjusted based on specific working conditions.
[0111] The temperature change rate of the corresponding tensioning operation section is calculated based on the environmental temperature data, and if the temperature change rate is higher than the preset temperature rise threshold, the temperature change rate is reduced to the preset temperature proportion of the original rate, wherein the environmental temperature data of each timestamp in the tensioning operation section is sorted to draw the corresponding temperature curve, and the average value of the slope of each point in the curve is calculated as the temperature change rate; the preset temperature rise threshold and the preset temperature proportion are set based on historical temperature control experience, and if the temperature change rate of the tensioning operation section is higher than the preset temperature rise threshold, the temperature in the section is reduced through the cooling process to make the temperature change rate of the section reach the preset temperature proportion value of the original temperature change rate.
[0112] Meanwhile, the planned tensioning duration of the corresponding tensioning operation section is proportionally extended based on the proportion of the stress loss estimation value to the original tensioning control force value, and the tensioning starting time of each tensioning operation section is synchronously adjusted, wherein the proportional extension means that, for example, if the proportion of the stress loss estimation value to the original tensioning control force value is 10%, the planned tensioning duration of the corresponding tensioning operation section is extended by 10%, and the tensioning starting time of all subsequent tensioning operation sections is synchronously adjusted to ensure that each tensioning operation section can be normally connected.
[0113] The calibrated tensioning correction parameter data is used as the calibration control stress data.
[0114] The manner of performing zero-point offset compensation includes:
[0115] The sensor device number of the corresponding measuring point in the calibration control stress data and the disturbance correction linear data is matched to obtain the original installation zero elevation coordinate of the sensor device stored in the management database, wherein the sensor device number is obtained by searching the preset digital sensor device management database, the measuring point common to the calibration control stress data and the disturbance correction linear data is matched with the corresponding sensor device number, and the original installation zero elevation coordinate recorded when the sensor device is installed is obtained.
[0116] The measured elevation coordinate of the current corresponding sensor device is identified, and the offset distance between the original installation zero elevation coordinate and the measured elevation coordinate is calculated, wherein the measured elevation coordinate is obtained by obtaining the latest sensor coordinate data, and the elevation difference between the coordinate and the original installation zero elevation coordinate is calculated as the offset distance.
[0117] If the offset distance of the continuous measuring point is higher than the preset zero-point offset threshold and continuously increases, it is determined that zero-point drift occurs in the continuous measuring point, and offset compensation is triggered, wherein the zero-point offset threshold is set based on zero-point offset related knowledge and engineering specifications, and if the offset distance is always higher than the zero-point offset threshold and there is an increasing trend in the continuous measuring point, it is considered that zero-point drift occurs in the continuous measuring point, and offset compensation operation needs to be performed; wherein "continuous" in this embodiment refers to a number of adjacent measuring points within a certain time window, and the specific length of the time window is set based on the sampling period setting specification in the construction process.
[0118] The elevation value of each measuring point in the disturbance correction linear data is incrementally rolled back using the offset distance to obtain adjusted disturbance correction linear data, wherein since zero-point drift occurs, the measured elevation value is a virtual high, and therefore the elevation value of the measuring point where zero-point drift occurs is incrementally corrected downward using the offset distance as the change amount, for eliminating the pseudo-elevation change caused by zero-point drift.
[0119] Simultaneously, the offset distance is converted into a stress offset, which is then used to incrementally backtrack the stress values at each measuring point in each tensioning operation segment of the calibration control stress data, resulting in adjusted calibration control stress data. The stress conversion refers to determining the response relationship between elevation values and stress changes based on engineering specifications and mechanics (e.g., establishing a displacement-stress mapping model), converting the offset distance into a stress offset, and using this stress offset to incrementally correct the stress values at measuring points that drift at zero point in each tensioning operation segment.
[0120] The adjusted disturbance correction line data and the adjusted calibration control stress data are integrated to obtain the monitoring data for the offset repair process.
[0121] The ways to construct control strategies include:
[0122] The monitoring data of the offset repair process is encoded into a set of parameters and a sequence of control commands. A data structure is constructed to store the set of parameters and the sequence of control commands, and the control strategy is obtained and sent to the preset construction control terminal for application.
[0123] The monitoring data for the offset repair process includes the adjusted disturbance correction alignment data and adjusted calibration control stress data generated through multiple steps. This includes parameters reflecting the control target, such as adjusted elevation values, tension force, or duration, as well as parameter changes during control processes such as stress correction, leveling control, or stress compensation. The control processes in this data are encoded into a sequence of control instructions, and the parameters of the control target and other relevant parameters are encoded into a parameter set. This data is stored using a data structure to encapsulate the control instructions and control target data to obtain an executable control strategy. This control strategy is then sent to a preset construction control terminal to execute the control process.
[0124] This embodiment obtains continuous beam construction data by real-time acquisition of structural parameter data and data cleaning. Based on this construction data, it performs elevation fluctuation interference identification, leveling control, stress interference correction, tension offset correction, tension control calibration, and zero-point offset compensation, realizing a method for full-process alignment control during continuous beam construction. Compared with existing experience, by identifying and performing leveling control on abrupt changes in the elevation angle of the formwork pouring area, it reduces the alignment elevation fluctuation error caused by uneven assembly of the formwork. By identifying and performing linear correction on stress release sections at structural joint connections, it reduces the instantaneous alignment error caused by short-term stress release behavior. By adjusting the camber of each tensioning operation section, it reduces camber anomalies caused by tension sequence deviation or uncontrolled force. By performing tension control calibration, it improves the tension control accuracy under temperature change scenarios and achieves compensation for elevation and stress. By identifying and eliminating zero-point drift phenomena, it reduces drift interference and improves the stability and data reliability of long-period structural alignment control.
[0125] Example 2
[0126] Please see Figure 2 As shown, parts not described in detail in this embodiment are described in Embodiment 1. A full-process control system for the alignment of a high-speed railway long-span continuous beam is provided, including:
[0127] The data acquisition module is used to collect continuous beam structural parameter data in real time and perform data cleaning to obtain continuous beam construction data;
[0128] The elevation leveling module is used to identify elevation fluctuation interference in continuous beam construction data and output elevation change abrupt regions; based on the elevation change abrupt regions, it performs leveling control on the continuous beam construction data to obtain leveling correction data;
[0129] The stress correction module is used to correct stress disturbances in the leveling correction data to obtain disturbance correction linear data.
[0130] The tensioning correction module is used to acquire tensioning plan information in real time, perform tensioning offset correction on the tensioning plan information based on disturbance correction line data, and generate tensioning correction parameter data.
[0131] The control calibration module is used to collect construction climate data, perform tension control calibration on the tension correction parameter data based on the construction climate data, and output calibration control stress data.
[0132] The offset compensation module is used to perform zero-point offset compensation on calibration control stress data and disturbance correction line data, and output monitoring data of the offset repair process.
[0133] The strategy generation module is used to construct control strategies based on monitoring data of the repair offset process and send the control strategies to the preset construction control terminal; the modules are connected to each other via wired and / or wireless means.
[0134] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
[0135] All formulas in this manual are dimensionless and calculated numerically. The formulas are derived from software simulations based on a large amount of collected data to obtain the most recent real-world results. The preset parameters and thresholds in the formulas are set by those skilled in the art according to the actual situation.
[0136] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A high-speed railway long-span continuous beam linear whole-process control method, characterized in that, The method comprises the following steps: S1. Collecting continuous beam structure parameter data in real time and performing data cleaning to obtain continuous beam construction data; S2. Identifying elevation fluctuation interference of the continuous beam construction data and outputting a high-difference mutation region; performing leveling control on the continuous beam construction data based on the high-difference mutation region to obtain leveling correction data; S3. Performing stress interference correction on the leveling correction data to obtain disturbance correction linear data; S4. Real-time acquisition of tensioning plan information, tensioning offset correction of the tensioning plan information based on the disturbance correction linear data to generate tensioning correction parameter data; S5. Collecting construction climate data, performing tensioning control calibration of the tensioning correction parameter data based on the construction climate data to output calibrated control stress data; S6. Performing zero-point offset compensation on the calibrated control stress data and the disturbance correction linear data to output repair offset process monitoring data; S7. Constructing a control strategy based on the repair offset process monitoring data and sending the control strategy to a preset construction control terminal.
2. The high-speed railway long-span continuous beam alignment whole-process control method according to claim 1, characterized in that, The method for identifying the elevation fluctuation interference comprises the following steps: Extracting structure elevation measurement values in the continuous beam construction data located at the hanging basket pouring opening region and constructing an elevation measurement value sequence, performing small section division on the elevation measurement value sequence to obtain unit elevation division intervals; Extracting a center point elevation value of a continuous measurement point in a single unit elevation division interval and elevation values of adjacent measurement points of the point; calculating elevation differences of two adjacent measurement points and the center point elevation value respectively, and drawing an elevation polyline segment based on the elevation differences; calculating a polyline included angle of the elevation polyline segment, and if the polyline included angle is less than a preset mutation angle threshold, the corresponding unit elevation division interval is determined as a candidate high-difference abnormal interval; Taking continuous candidate high-difference abnormal intervals as first high-difference mutation sections, constructing a sliding average function to calculate sliding average values of all measurement points in the first high-difference mutation sections, and drawing a smooth fitting curve based on the sliding average values; calculating residual extreme value differences of each sampling point of the smooth fitting curve, and if the residual extreme value difference exceeds a preset fitting residual range interval, the corresponding first high-difference mutation section is determined as a high-difference mutation region.
3. The high-speed railway long-span continuous beam alignment whole-process control method according to claim 2, characterized in that, The method for performing leveling control comprises the following steps: Calculating difference values of original elevation measurement values and theoretical elevation values of each measurement point in the high-difference mutation region to obtain leveling target offsets, and establishing a mapping relationship between measurement point numbers and the leveling target offsets; Identifying symbols of all leveling target offsets, and statistically counting positive offset quantities and negative offset quantities based on the symbols; if the positive offset quantity is higher than a preset proportion of total offsets, it is determined as an upward trend, and if the negative offset quantity is higher than the preset proportion of total offsets, it is determined as a downward trend; Removing extreme values in absolute values of all leveling target offsets and performing arithmetic averaging, taking an absolute value of the arithmetic average value as an adjustment amount, and setting an adjustment upper limit value; if in the upward trend, the adjustment amount is inverted and taken as a downward adjustment amount of all original elevation measurement values; if in the downward trend, the adjustment amount is taken as an upward adjustment amount of all original elevation measurement values, and if absolute values of the downward adjustment amount and the upward adjustment amount exceed the adjustment upper limit value, the adjustment upper limit value is taken as the adjustment amount. The adjustment amount is bound to the corresponding measuring point number and spatial position, and a high-precision measurement unit is unified to obtain the elevation correction data of the hanging basket pouring opening area as the pouring template reference value; and the elevation correction data and the remaining data are integrated to obtain the leveling correction data.
4. The high-speed railway long-span continuous beam alignment whole-process control method according to claim 3, characterized in that, The stress interference correction manner comprises: The joint stress data in the leveling correction data is extracted, and a sampling period is set to continuously collect real-time data; a joint stress data sequence is constructed, and the stress change rate of adjacent sampling points in the joint stress data sequence is calculated; A sliding window is used to traverse the stress data sequence, and the total stress change in each sliding window is counted; if the stress change rate in a continuous sliding window continuously exceeds a preset stress change threshold, and the total stress change is greater than a stress release lower limit, then a time segment formed by the corresponding sliding window is determined as a stress release segment; The difference between the maximum stress value and the minimum stress value in the stress release segment is calculated, the duration of the stress release segment is counted, and the ratio of the difference to the duration is taken as a disturbance influence coefficient; the stress value in the stress release segment is linearly adjusted based on the disturbance influence coefficient to obtain a disturbance correction value; if the difference is less than a difference lower limit or the duration is less than a response time threshold, the stress correction is not triggered; The disturbance correction value is used to replace the original joint stress data to obtain corrected stress data, and the corrected stress data and the remaining data are integrated to obtain disturbance correction linear data.
5. The high-speed railway long-span continuous beam alignment whole-process control method according to claim 4, characterized in that, The tensioning plan information comprises: a tensioning operation segment number, a tensioning start time, a planned tensioning sequence, a planned tensioning duration, a tensioning limit interval, a tensioning segment position coordinate, and a predicted tensioning camber.
6. The high-speed railway long-span continuous beam alignment whole-process control method according to claim 5, characterized in that, The tensioning offset correction manner comprises: The tensioning segment position coordinate, the tensioning operation segment number, and the disturbance correction linear data are matched to output linear related data belonging to the same tensioning operation segment, and tensioning segment linear data is obtained; A corrected elevation curve is drawn based on the tensioning segment linear data, and an elevation camber group is constructed based on the predicted tensioning camber; the corrected elevation curve and the corresponding elevation value in the elevation camber group are compared to output a camber elevation difference; if the camber elevation difference is higher than a preset camber upper limit, it is determined that over-cambering occurs, and if it is lower than a preset camber lower limit, it is determined that the camber is insufficient; A tensioning correction function is constructed based on the absolute value of the camber elevation difference; for the tensioning segment with over-cambering or insufficient camber, the tensioning control force value is calculated using the tensioning correction function; the tensioning control force value is matched with the tensioning limit interval; if it exceeds the interval range, the interval boundary value closest to the tensioning control force value at this time is taken as a new tensioning control force value; The tensioning sequence is restructured based on the absolute value of the camber elevation difference, and a modified tensioning sequence number sequence is obtained; the planned tensioning duration of each tensioning operation segment is adjusted based on the camber elevation difference, and the start time of each tensioning operation segment is adjusted based on the modified tensioning sequence number sequence and the planned tensioning duration; All adjusted tensioning plan information is integrated to obtain tensioning correction parameter data.
7. The high-speed railway long-span continuous girder alignment whole-process control method according to claim 6, characterized in that, The tensioning control calibration manner comprises: extracting environmental temperature data of a time section where the tensioning operation section is located in the construction climate data, querying material attribute information of the continuous beam to obtain a temperature sensitivity coefficient, calculating a stress loss estimation value based on the environmental temperature data and the temperature sensitivity coefficient, and triggering stress compensation if the stress loss estimation value is higher than a preset loss threshold; identifying a bridge site structure of the continuous beam, and matching a stress-sensitive level of each tensioning operation section based on known engineering specifications; calculating a sum of an absolute value of the tensioning control force value and the stress loss estimation value to obtain a target tensioning amount, limiting the target tensioning amount to an interval boundary value if the target tensioning amount exceeds a tension limit interval, converting the stress-sensitive level into a sensitive proportion, and calculating a product of the target tensioning amount and the sensitive proportion as a compensation tensioning amount of the corresponding tensioning operation section; calculating a temperature change rate of the corresponding tensioning operation section based on the environmental temperature data, reducing the temperature change rate to a preset temperature proportion of the original rate if the temperature change rate is higher than a preset temperature rise threshold, proportionally extending a planned tensioning duration of the corresponding tensioning operation section based on a proportion of the stress loss estimation value and an original tensioning control force value, and synchronously adjusting a tensioning start time of each tensioning operation section; using the calibrated tensioning correction parameter data as calibrated control stress data.
8. The high-speed railway long-span continuous beam alignment whole-process control method according to claim 7, characterized in that, The manner of performing zero point offset compensation includes: matching the calibrated control stress data and the sensor device number of the corresponding measuring point in the disturbance correction linear data, obtaining the original installation zero elevation coordinate of the sensor device stored in the management database, identifying the measured elevation coordinate of the current corresponding sensor device, and calculating the offset distance between the original installation zero elevation coordinate and the measured elevation coordinate; if the offset distance of the continuous measuring point is higher than the preset zero point offset threshold and continuously increases, it is determined that zero point drift occurs in the continuous measuring point, and offset compensation is triggered; using the offset distance to incrementally back off the elevation value of each measuring point in the disturbance correction linear data to obtain adjusted disturbance correction linear data; at the same time, the offset distance is stress-converted to output a stress offset, and the stress offset is used to incrementally back off the stress value of each measuring point in each tensioning operation section in the calibrated control stress data to obtain adjusted calibrated control stress data; integrating the adjusted disturbance correction linear data and the adjusted calibrated control stress data to obtain repair offset process monitoring data.
9. The high-speed railway long-span continuous beam alignment whole-process control method according to claim 8, characterized in that, The manner of constructing the control strategy includes: encoding the repair offset process monitoring data into a parameter set and a control instruction sequence, constructing a data structure body to store the parameter set and the control instruction sequence, obtaining the control strategy, and sending the control strategy to a preset construction control terminal for application.
10. A high-speed railway long-span continuous beam alignment whole-process control system for implementing the high-speed railway long-span continuous beam alignment whole-process control method according to any one of claims 1-9, characterized in that, It includes: a data acquisition module for acquiring continuous beam structure parameter data in real time and performing data cleaning to obtain continuous beam construction data; a height difference leveling module for identifying elevation fluctuation interference of the continuous beam construction data and outputting a height difference mutation region; performing leveling control on the continuous beam construction data based on the height difference mutation region to obtain leveling correction data; a stress correction module for correcting stress interference of the leveling correction data to obtain disturbance correction linear data; The tension correction module is configured to acquire tension plan information in real time, correct the tension plan information based on the disturbance correction linear data, and generate tension correction parameter data; The control calibration module is configured to collect construction climate data, perform tension control calibration on the tension correction parameter data based on the construction climate data, and output calibrated control stress data; The offset compensation module is configured to perform zero-point offset compensation on the calibrated control stress data and the disturbance correction linear data, and output repaired offset process monitoring data; The strategy generation module is configured to construct a control strategy based on the repaired offset process monitoring data, and send the control strategy to a preset construction control terminal; and the various modules are connected through wired and / or wireless means.
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