A cast-in-place box girder high formwork pouring intelligent monitoring and safety prevention and control system

Abstract

The application discloses a cast-in-situ box girder high formwork pouring intelligent monitoring and safety prevention and control system and relates to the technical field of bridge safety supervision, which is used to solve the problem of formwork risk lag; the application establishes the corresponding relationship between the pouring supervision subarea and the support supervision subarea, tracks the load action process formed by the material distribution position, pouring time and concrete volume, attributes the vertical pole stress, node strain, vertical settlement and horizontal displacement change to the corresponding support supervision subarea, and the deviation identification module performs consistency determination on the load action process and the frame body response change, identifies the position deviation, amplitude deviation, time sequence deviation and expansion deviation, and the prevention and control closed loop module determines the risk level according to the deviation type and the continuous state, forms the disposal requirement, review condition and release state, so that the accuracy, timeliness and traceability of the high formwork pouring risk identification can be improved.

Description

Technical Field

[0001] This invention relates to the field of bridge safety supervision technology, and more specifically, to an intelligent monitoring and safety control system for cast-in-place box girder high-formwork casting. Background Technology

[0002] In the field of bridge engineering pouring supervision, the safety monitoring and control system for high-formwork in cast-in-place box girders has been gradually applied to construction supervision scenarios such as urban viaducts, overpasses, and long-span continuous beams. High-formwork refers to a formwork support system with a large support height, heavy load, or large structural span. It is usually composed of components such as uprights, horizontal bars, scissor braces, top supports, bases, and support foundations, and is used to bear the formwork, steel bars, concrete, and work loads before the concrete hardens. Existing technical solutions focus on improving the density of monitoring points, data collection frequency, and alarm sensitivity of individual indicators. By recording the stress on the uprights, the deformation of the frame, and the volume of pouring in real time, it helps supervisors to grasp the safety status of the high-formwork system during the pouring of cast-in-place box girders.

[0003] However, there is a lack of effective correspondence between the process of the pouring load and the changes in the formwork response. During the pouring of cast-in-place box girders, the concrete load will dynamically transfer between different beam segments, webs, bottom slabs and transverse beam areas depending on the placement of the concrete, the pouring sequence and the volume of concrete poured. The stress, settlement and horizontal displacement response of the high formwork will also change with the load transfer path. If alarms are triggered by whether a single monitoring point exceeds the limit, it is difficult to determine whether the abnormal response occurs in the corresponding bearing area, and it is also difficult to identify early signs of instability such as continued settlement after the load stabilizes and the expansion of abnormal response to adjacent support areas. This leads to delayed risk assessment, scattered early warning, and a lack of closed-loop support for prevention and control, thereby reducing the accuracy and timeliness of safety supervision of high formwork pouring of cast-in-place box girders. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the following solution is proposed to solve the problem of delayed support risk in the above-mentioned background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A smart monitoring and safety control system for cast-in-place box girder high-formwork casting includes a monitoring object mapping module, a load tracking module, a frame response monitoring module, a deviation identification module, and a control closed-loop module; The monitoring object mapping module is used to establish the correspondence between the casting monitoring zone and the support monitoring zone according to the segmentation of the cast-in-place box girder structure, the arrangement of high formwork supports and the layout of monitoring points, and to configure the main load-bearing support monitoring zone, adjacent support monitoring zone and the response allowable range. The load tracking module is used to track the load application location, load accumulation process, and load change trend of each pouring supervision zone based on the placement location, pouring time, and concrete volume. The frame response monitoring module is used to acquire the stress, nodal strain, vertical settlement and horizontal displacement changes of the high formwork uprights according to a unified time benchmark, and assign them to the corresponding support supervision zone; The deviation identification module is used to determine the consistency between the load application process and the frame response changes based on the correspondence between the pouring supervision zone and the support supervision zone, and to identify position deviation, amplitude deviation, temporal deviation and extended deviation. The prevention and control closed-loop module is used to determine the risk level of high formwork pouring based on the deviation type, deviation duration and the scope of the supporting supervision zone involved, and to form a safety prevention and control closed-loop record of associated risk level, triggering deviation type, handling requirements and review status.

[0006] Furthermore, the monitoring object mapping module divides the casting monitoring zones according to the longitudinal beam segments, transverse cross-sectional areas and casting sequence of the cast-in-place box girder, and divides the support monitoring zones according to the high formwork uprights, crossbar connection areas, scissor bracing arrangement areas and support foundation positions. Establish a correspondence between each pouring supervision zone and the supporting supervision zones within its load transfer range. Mark the supporting supervision zone that directly bears the load transfer of the pouring supervision zone as the main load-bearing supporting supervision zone, and mark the supporting supervision zones that are adjacent to the main load-bearing supporting supervision zones and are on the load diffusion path as adjacent supporting supervision zones.

[0007] Furthermore, the allowable response range is configured according to the design bearing parameters, pole spacing, support height, foundation bearing conditions and monitoring point type of each support monitoring zone, and forms the allowable stress range, allowable settlement range and allowable horizontal displacement range respectively. Among them, the main bearing support monitoring zone adopts the allowable response range corresponding to the load action state of the current pouring monitoring zone, and the adjacent support monitoring zone adopts the allowable response range corresponding to the load diffusion path.

[0008] Furthermore, the load tracking module reads the placement location, pouring time and concrete volume according to a unified sampling period, matches the placement location to the corresponding pouring supervision zone, converts the concrete volume entering the pouring supervision zone in the current sampling period into load increment, and determines the load accumulation process and load change trend based on the load increment changes in continuous sampling periods. When the cumulative load difference between adjacent pouring supervision zones exceeds the equilibrium boundary of the corresponding zone, the load concentration state of that pouring supervision zone is marked.

[0009] Furthermore, the frame response monitoring module samples and aligns the changes in pole stress, node strain, vertical settlement, and horizontal displacement according to a unified time reference, and organizes the stress changes, settlement changes, and horizontal displacement changes within the same support supervision zone into frame response segments based on the relationship between the monitoring points and the support supervision zones. When multiple monitoring points within the same support and supervision zone show changes in the same direction within a continuous sampling period, the support and supervision zone is marked as a response enhancement zone.

[0010] Furthermore, when performing consistency determination, the deviation identification module first determines the corresponding main load-bearing support supervision zone and adjacent support supervision zone based on the current load application position; When the response enhancement partition does not belong to the main bearer support supervision partition or the adjacent support supervision partition, it is determined to be a position deviation; When the response enhancement zone belongs to the main load-bearing support supervision zone or the adjacent support supervision zone, but its stress change, settlement change or horizontal displacement change exceeds the corresponding response allowable range, it is determined to be an amplitude deviation.

[0011] Furthermore, when performing consistency determination, the deviation identification module uses the continuous sampling period after the load change trend meets the stability determination condition as the time-series verification window; If the vertical settlement or horizontal displacement of the corresponding support monitoring zone continues to increase within the time sequence verification window, it is determined to be a time sequence deviation. If the abnormal response is continuously transmitted from the initial support monitoring zone to the adjacent support monitoring zone, and the transmission direction is inconsistent with the direction of change of the current load application location, it is determined to be an extended deviation.

[0012] Furthermore, the prevention and control closed-loop module determines the risk level of high formwork casting based on the occurrence of positional deviation, amplitude deviation, temporal deviation, and expansion deviation; When a single regulatory zone deviates significantly and the duration does not reach the warning continuity boundary, it is classified as a level of concern. When the same supporting regulatory zone shows deviation in magnitude or time sequence within a continuous sampling period, it is determined to be at the warning level; When a location deviation, expansion deviation, or anomalies occur in multiple supporting regulatory zones within the same sampling period or consecutive sampling periods, it is determined to be a control level.

[0013] Furthermore, the prevention and control closed-loop module forms a safety prevention and control closed-loop record based on the risk level of high formwork casting; The safety control closed-loop record includes risk level, trigger deviation type, corresponding pouring supervision zone, abnormal support supervision zone, trigger sampling cycle, abnormal response data, handling requirements and review conditions. Among them, the attention level corresponds to the generation of monitoring review prompts, the early warning level corresponds to the generation of regional verification requirements, and the control level corresponds to the generation of safety handling requirements and review confirmation requirements.

[0014] Furthermore, the closed-loop control module acquires the verification sampling data after handling, and re-inputs the verification sampling data into the deviation identification module to determine the consistency between the load application process and the changes in the frame response; When the deviation of the corresponding support supervision zone is eliminated within the continuous review and sampling cycle, and the change in the frame response returns to the allowable response range, the corresponding safety control closed-loop record is switched to the release state, and the release time, review results and handling process are written into the high formwork casting safety supervision file.

[0015] The technical effects and advantages of the intelligent monitoring and safety control system for high-formwork casting of cast-in-place box girders according to the present invention are as follows: This invention establishes a mapping relationship between the casting supervision zone, the support supervision zone, and the monitoring points, thereby realizing the corresponding association between the load application location, the frame response area, and the risk triggering basis during the high-support casting of cast-in-place box girders, and avoiding misjudgments and omissions caused by isolated judgment of monitoring data such as stress, settlement, and displacement. The system tracks the load accumulation process and trend of each pouring supervision zone based on the placement location, pouring time, and concrete volume. It also organizes the changes in pole stress, nodal strain, vertical settlement, and horizontal displacement into the corresponding support supervision zone's frame response segments. By judging the consistency between the load action process and the frame response changes, it identifies positional deviation, amplitude deviation, temporal deviation, and expansion deviation, and can detect load concentration, response lag, abnormal diffusion, and local instability trends in advance. Meanwhile, the system determines the risk level based on the type, duration, and scope of deviation, forming a closed-loop safety control record that includes handling requirements, review conditions, and deregulation status. This elevates the supervision of high-formwork casting from a single-point alarm to a closed-loop management system encompassing risk identification, tiered handling, review and deregulation, and record tracing, thereby improving the accuracy, timeliness, and traceability of safety supervision for cast-in-place box girder high-formwork casting. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of an intelligent monitoring and safety control system for high-formwork casting of cast-in-place box girders according to the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In order to achieve the above objectives, Figure 1 A structural schematic diagram of an intelligent monitoring and safety control system for high-formwork casting of cast-in-place box girders is provided, which specifically includes a monitoring object mapping module, a load tracking module, a frame response monitoring module, a deviation identification module, and a control closed-loop module. In one specific embodiment, this solution can be applied to the supervision of cast-in-place continuous box girder construction for urban viaducts. The cast-in-place box girder includes a left web area, a right web area, a bottom slab area, a top slab area, and a transverse diaphragm area, and is divided into several beam segments along the longitudinal direction of the bridge. A high-support formwork system is set under the box girder, including multiple rows of uprights, horizontal crossbars, scissor braces, top supports, bases, and support foundations. At the same time, safety supervision is carried out on the casting process. Upright force sensors, nodal strain sensors, vertical settlement monitoring points, and horizontal displacement monitoring points are set up at key locations of the high-support formwork. The monitoring points are respectively installed in the mid-span support area, the support area below the web, the support area below the transverse diaphragm, and areas where the bearing capacity of the support foundation changes significantly.

[0019] In this scenario, concrete pouring proceeds according to a preset pouring sequence. Different box girder areas bear additional concrete loads at different times. The system uses the unified clock of the pouring monitoring platform as the time reference and incorporates data on material placement location, pouring time, concrete volume, pole stress, node strain, vertical settlement, and horizontal displacement into a unified sampling period. The unified sampling period can be set according to the pouring speed, the upload frequency of the monitoring equipment, and the requirements for monitoring accuracy. For data arriving within the same sampling period, the system merges them according to the collection time and the monitoring object to which they belong, and retains a delay mark for data arriving across periods.

[0020] This process ensures a time correspondence between the load action process generated by the load tracking module and the frame response segment generated by the frame response monitoring module, thus avoiding distortion of the identification results due to inconsistent sampling times of different devices.

[0021] Meanwhile, since the load transfer paths of the box girder web, diaphragm beams and support areas are different, the stress, settlement and horizontal displacement responses of different support areas of the high formwork are also different. Therefore, the monitoring object mapping module first needs to match the box girder casting area, the high formwork support area and the monitoring point.

[0022] The monitoring object mapping module is used to establish the correspondence between the casting monitoring zones and the support monitoring zones based on the segmentation of the cast-in-place box girder structure, the arrangement of high formwork supports, and the layout of monitoring points. It also configures the main load-bearing support monitoring zones, adjacent support monitoring zones, and allowable response ranges. Specific implementation details include: The monitoring object mapping module establishes a correspondence between the casting monitoring zone and the support monitoring zone based on the segmentation of the cast-in-place box girder structure, the arrangement of high formwork supports, and the layout of monitoring points. It also configures the main load-bearing support monitoring zone, adjacent support monitoring zone, and the allowable response range.

[0023] Specifically, the monitoring object mapping module first reads the structural segment information of the cast-in-place box girder. This information includes the longitudinal beam segment number, transverse section area type, support location, mid-span location, diaphragm location, web location, and bottom slab location. The monitoring object mapping module divides the cast-in-place box girder into several longitudinal monitoring segments according to the longitudinal beam segments, such as the first segment, second segment, and third segment. Then, according to the transverse section area, each longitudinal monitoring segment is further divided into a bottom slab casting area, a left web casting area, a right web casting area, a top slab casting area, and a diaphragm casting area. Subsequently, based on the order of pouring, the areas that need to be monitored within the same pouring stage are defined as pouring supervision zones.

[0024] Therefore, each pouring supervision zone has a clearly defined beam segment location, cross-sectional area, and pouring stage attribute.

[0025] Simultaneously, the regulatory object mapping module reads the high-support formwork arrangement information, which includes the position of the uprights, the spacing between the uprights, the horizontal bar connection area, the scissor brace arrangement area, the top support position, the base position, the support foundation position, and the support height. The regulatory object mapping module divides the high-support formwork system into several support regulatory zones according to the upright groups, horizontal bar connection areas, scissor brace arrangement areas, and support foundation positions.

[0026] For example, the support unit located below the left web and formed by the same set of uprights, crossbars and scissor braces is divided into the left web support supervision zone; The support unit located below the right web is divided into the right web support supervision zone; The support units located below the mid-span base plate are divided into mid-span base plate support supervision zones; The support units located below the diaphragm are divided into diaphragm support supervision zones.

[0027] After the zoning is completed, the monitoring object mapping module establishes a corresponding relationship based on the spatial projection relationship, load transfer path and support stress relationship between the pouring monitoring zone and the support monitoring zone. For a certain pouring monitoring zone, if its concrete load is mainly transferred to a certain support monitoring zone through the formwork, square timber, beam bottom support or web side formwork, then the support monitoring zone is marked as the main load-bearing support monitoring zone of the pouring monitoring zone. If a certain support supervision zone is not the area that directly bears the load of the pouring supervision zone, but is adjacent to the main load-bearing support supervision zone and is located on the load diffusion path or the frame deformation transmission path, then the support supervision zone is marked as the adjacent support supervision zone.

[0028] For example, when the left web of the first beam segment begins to be poured, its concrete load is mainly transferred to the vertical pole group and horizontal pole connection area below the left web. The left web support supervision zone is then marked as the main load-bearing support supervision zone. If the mid-span bottom plate support supervision zone and the transverse beam support supervision zone adjacent to the left web support supervision zone are on the load diffusion path, they are marked as adjacent support supervision zones.

[0029] For example, when the diaphragm beam pouring supervision zone begins to pour, because the concrete thickness in the diaphragm beam area is relatively large and the local load is relatively concentrated, the support supervision zone below it is marked as the main load-bearing support supervision zone, and the adjacent web support supervision zones on the left and right are marked as adjacent support supervision zones.

[0030] Furthermore, the monitoring object mapping module assigns the force monitoring points, settlement monitoring points, and horizontal displacement monitoring points to the corresponding support monitoring zones. Specifically, the force sensor installed on a certain pole group belongs to the support monitoring zone where that pole group is located. Settlement monitoring points installed at the support foundation or base location belong to the support monitoring zone corresponding to that foundation; Horizontal displacement monitoring points installed at the nodes of high formwork crossbars, scissor braces, or lateral constraints belong to the support supervision zone in which they are located.

[0031] In summary, the regulatory object mapping module forms a correspondence table that includes the pouring supervision zone, the main load-bearing support supervision zone, the adjacent support supervision zone, and the monitoring point set.

[0032] In this implementation, the regulatory object mapping module is also used to configure the response allowable range of each supporting regulatory zone. The response allowable range is determined based on the design bearing parameters, pole spacing, support height, foundation bearing conditions, and monitoring point type of the supporting regulatory zone. The design bearing parameters include the vertical load, horizontal load influence, and node deformation control requirements that the supported monitoring zone can withstand under design conditions; the pole spacing is used to reflect the support density of the supported monitoring zone; the support height is used to reflect the overall stability sensitivity of the area; the foundation bearing conditions are used to reflect the constraint capacity of the bottom foundation on settlement changes; and the monitoring point type is used to distinguish the response control objects corresponding to the stress monitoring point, settlement monitoring point, and horizontal displacement monitoring point.

[0033] The regulatory object mapping module configures the allowable stress range, allowable settlement range, and allowable horizontal displacement range based on the above information, including: The allowable stress range is used to define the acceptable range of stress variation on the pole or at the nodes; The allowable settlement range is used to limit the amount of downward displacement of the support foundation, base, or support node in the vertical direction; The allowable range of horizontal displacement is used to limit the permissible offset of a high formwork support in the lateral or longitudinal direction.

[0034] When configuring the allowable response range, the monitoring object mapping module not only configures the absolute allowable boundary of each monitoring quantity, but also configures the allowable boundary of change within a single sampling period and the allowable boundary of growth within consecutive sampling periods. The absolute allowable boundary is used to determine whether the stress, settlement or horizontal displacement exceeds the safety control range of the support monitoring zone; the single-period change allowable boundary is used to determine whether the sudden change in response within the current sampling period matches the current load increment; and the continuous growth allowable boundary is used to determine whether there is a continuous expansion trend in the response within multiple sampling periods.

[0035] For the main load-bearing support supervision zone, the supervision object mapping module adopts the response allowable range corresponding to the current pouring supervision zone load action state. That is to say, when a certain support supervision zone is marked as the main load-bearing support supervision zone of the current pouring supervision zone, the allowable stress range, allowable settlement range and allowable horizontal displacement range of the zone need to match the current pouring area, current pouring volume, current pouring stage and expected load action state. The main load-bearing support supervision zone is allowed to have stress growth or settlement changes corresponding to the increase in pouring load, but such changes must not exceed its allowable response range.

[0036] For adjacent support monitoring zones, the monitoring object mapping module adopts the response allowable range corresponding to the load diffusion path. The adjacent support monitoring zone is usually not the direct bearing area of ​​the current load, and its response change should be smaller than that of the main bearing support monitoring zone, or should show a gradual change consistent with the load diffusion path. If the adjacent support monitoring zone shows a settlement change, horizontal displacement change, or force change that is significantly greater than that of the main load-bearing support monitoring zone, the subsequent deviation identification module can use it as the basis for judging positional deviation or extended deviation.

[0037] For example, in the scenario corresponding to the left web casting supervision zone of the first beam segment, the left web support supervision zone is the main load-bearing support supervision zone, and its allowable response range is configured according to the load action state of the left web casting. The mid-span bottom plate support supervision zone and the transverse diaphragm support supervision zone are adjacent support supervision zones, and their allowable response range is configured according to the influence state after the load spreads from the left web area to the adjacent area.

[0038] In one specific embodiment, the monitoring object mapping module can organize the mapping results into a casting monitoring object mapping table. Each record in the mapping table includes at least: casting monitoring zone number, longitudinal beam segment number, transverse section area type, casting stage identifier, main load-bearing support monitoring zone number, adjacent support monitoring zone number set, stress monitoring point number set, settlement monitoring point number set, horizontal displacement monitoring point number set, allowable stress range, allowable settlement range, and allowable horizontal displacement range.

[0039] In one specific embodiment, taking the left web casting area of ​​the first longitudinal beam segment as an example, the concrete load in this area during casting is mainly transmitted downward through the formwork and support components below the left web. Therefore, the monitoring object mapping module determines the support area below the left web, which is composed of several uprights, crossbars and scissor braces, as the main load-bearing support monitoring zone of the casting monitoring zone. Meanwhile, since the load from the left web plate pouring may spread to the adjacent area through the bottom formwork of the beam, the transverse connecting rods and the overall constraint of the frame, the monitoring object mapping module determines the support area below the bottom plate and the support area below the transverse beam near the left web plate in the same longitudinal beam segment as the adjacent support monitoring zone. Force sensors on the uprights installed in the main load-bearing support monitoring zone below the left web plate are used to reflect changes in the force in that area; settlement monitoring points installed at the corresponding support foundation or base are used to reflect changes in the vertical settlement in that area; and horizontal displacement monitoring points installed at the crossbar nodes or lateral constraint locations are used to reflect changes in the lateral or longitudinal displacement in that area.

[0040] When the system subsequently processes the data of the left web casting area of ​​the first longitudinal beam segment, it calls the monitoring data of the main load-bearing support supervision zone and the adjacent support supervision zone according to the above mapping relationship, and uses the corresponding allowable stress range, allowable settlement range and allowable horizontal displacement range as the basis for deviation identification.

[0041] It should be noted that in this embodiment, the allowable response range, equilibrium boundary, stability judgment condition, warning continuity boundary, and sampling change boundary can all be pre-configured according to engineering design parameters, support supervision zone type, pouring stage, monitoring point type, and on-site monitoring accuracy requirements. They can also be updated during the pouring process based on confirmed monitoring data and verification results. The allowable response range is used to limit the allowable changes in stress, settlement, and horizontal displacement of the support supervision zone. The equilibrium boundary is used to limit the allowable difference in cumulative load between adjacent pouring supervision zones; The stability criteria are used to determine whether the load changes in a certain pouring supervision zone have entered a stable state; The warning continuity boundary is used to determine whether a deviation from the alert level has been upgraded to a warning level. The sampling change boundary is used to identify whether there are sudden changes or abnormal fluctuations in the monitoring data within a single sampling period; The above boundaries are not limited to fixed values ​​and can be configured according to different cast-in-place box girder structural forms, high formwork layout forms, and pouring supervision requirements.

[0042] The load tracking module is used to track the load application location, load accumulation process, and load change trend of each pouring monitoring zone based on the concrete placement location, pouring time, and concrete volume. Specific implementation details include: The load tracking module tracks the load application location, load accumulation process, and load change trend of each pouring supervision zone based on the placement location, pouring time, and concrete volume. The function of this module is not only to record the total amount of concrete that has been poured, but also to assign the concrete volume according to the pouring supervision zone, so that the newly added pouring load in each sampling period can be matched with the specific box girder area and the corresponding support supervision zone, thereby providing a load input basis for judging the consistency of the frame response.

[0043] Specifically, the load tracking module reads the pouring process data according to a preset unified sampling period. The unified sampling period can be set according to the on-site monitoring accuracy requirements, such as reading the placement position, pouring time and concrete volume once at fixed intervals. The concrete placement location can be obtained from the placement equipment positioning data, pouring operation records, pumping metering records, on-site electronic signature records, or pouring area information entered by supervisors; the concrete volume can be obtained from pumping metering data, tanker unloading records, zoned pouring records, or construction process metering data. The load tracking module organizes the above data according to the same time base, so that the placement position, pouring time and concrete volume within the same sampling period have a corresponding relationship.

[0044] When determining the location of the load, the load tracking module matches the placement location within the current sampling period with the aforementioned pouring supervision zone. If the placement location is located in the left web pouring area of ​​a certain longitudinal beam segment, the volume of concrete entering the area within the sampling period is attributed to the left web pouring supervision zone. If the concrete placement location is in the diaphragm area, the corresponding concrete volume will be assigned to the diaphragm pouring supervision zone. If the concrete placement location spans two adjacent pouring supervision zones within a sampling period, the concrete volume within that sampling period will be assigned to the corresponding pouring supervision zone based on the concrete placement dwell time, the concrete placement location change trajectory, or the on-site zone volume record.

[0045] When the material placement position moves from one pouring monitoring zone to an adjacent pouring monitoring zone within a continuous sampling period, the load tracking module determines the direction of load change based on the order in which the pouring monitoring zones appear. When there are multiple placement positions within the same sampling period, the direction of load application position change is determined first based on the trajectory of the placement position change. If a continuous trajectory cannot be obtained, the direction of load application position change is determined based on the incremental relationship of the concrete volume of each pouring supervision zone. The direction of load application position change is used in the subsequent extended deviation judgment and is compared with the transmission direction of abnormal response between support supervision zones.

[0046] Therefore, each pouring monitoring zone can obtain the corresponding increase in concrete volume within each sampling period.

[0047] When determining the load increment, the load tracking module converts the volume of concrete entering a certain pouring supervision zone within the current sampling period into the load increment within the sampling period by combining the concrete unit weight parameter. The concrete unit weight parameter can be the unit weight value preset in the mix proportion data, test data, or the engineering supervision parameter library. If this embodiment only needs to track the newly added pouring load, the formwork self-weight, the weight of the reinforcing steel and the existing construction dead load can be used as the basic load status of the pouring supervision zone. The load tracking module focuses on tracking the changes in the newly added load caused by concrete pouring.

[0048] Through the above processing, the additional pouring load borne by each pouring supervision zone during the current sampling period can be determined.

[0049] When determining the load accumulation process, the load tracking module accumulates the load increments of consecutive sampling periods within the same pouring supervision zone in chronological order to obtain the cumulative load of the pouring supervision zone from the start of pouring to the current moment. The cumulative load is used to reflect the load formation process of a certain pouring supervision zone in the time dimension.

[0050] For example, during the casting of the left web of the first longitudinal beam segment, if the placement of the material in multiple consecutive sampling cycles falls in the casting area of ​​the left web, the cumulative load in that area will continue to increase. If the fabric placement is moved to the adjacent base plate area, the cumulative load of the left web plate casting supervision zone remains relatively stable, while the adjacent base plate casting supervision zone begins to generate new load increments.

[0051] When determining the load change trend, the load tracking module compares the load increment change and cumulative load change of the same pouring supervision zone within a continuous sampling period.

[0052] When the load increment gradually increases within a continuous sampling period, the pouring supervision zone is marked as being in a rapid load increase trend. When the load increment remains within a small fluctuation range, the pouring supervision zone is marked as being in a steady load increase trend; When the load increment decreases to near zero or no new concrete volume is received within a continuous sampling period, the pouring monitoring zone is marked as being in a load stabilization state. This load change trend is used to subsequently determine whether the frame response matches the load action process. For example, if the settlement or horizontal displacement of the corresponding support monitoring zone continues to increase after the load stabilizes, it can be used as a basis for determining the time sequence deviation.

[0053] Furthermore, the load tracking module is also used to identify the load concentration state between adjacent pouring supervision zones. In this embodiment, the load tracking module configures the equilibrium boundary based on the cumulative load difference between adjacent pouring supervision zones, the pouring sequence, and the bearing capacity of the corresponding support supervision zone.

[0054] The equilibrium boundary is used to represent the range of allowable cumulative load differences between adjacent pouring supervision zones. It can be determined based on the box girder cross-sectional area type, the design bearing parameters of the support supervision zone, the pouring sequence requirements, and the load transfer relationship between adjacent areas.

[0055] For areas with large local loads, such as diaphragms and webs, the equilibrium boundary can be configured separately based on the load concentration sensitivity of the area. For continuously poured areas such as the base slab and top slab, the equilibrium boundary can be configured in conjunction with the pouring rhythm between adjacent zones.

[0056] When the cumulative load of a certain pouring monitoring zone is significantly higher than that of the adjacent pouring monitoring zones, and the difference exceeds the corresponding equilibrium boundary, the load tracking module marks the pouring monitoring zone as a load concentration state. The load concentration state includes at least the load concentration zone, the adjacent comparison zone, the trigger sampling period, the cumulative load difference, and the duration. This state is not directly equivalent to a risk alarm, but is used to determine whether the response of the current support frame of the monitoring zone is consistent with the load concentration situation.

[0057] For example, between the left web casting area of ​​the first longitudinal beam segment and the adjacent bottom slab casting area, if the left web area receives a large volume of concrete in multiple consecutive sampling periods, while the adjacent bottom slab area has not yet been cast synchronously, the cumulative load difference between the left web casting monitoring zone and the adjacent casting monitoring zone exceeds the corresponding equilibrium boundary. When the cumulative load difference exceeds the equilibrium boundary corresponding to the left web area, the load tracking module marks the left web casting monitoring zone as a load concentration state. After reading the status, the deviation identification module will focus on checking whether the stress, settlement and horizontal displacement changes of the main load-bearing support monitoring zone below the left web and the adjacent support monitoring zones are within the reasonable response range after load concentration.

[0058] The scaffold response monitoring module is used to acquire changes in stress, nodal strain, vertical settlement, and horizontal displacement of high-support formwork uprights according to a unified time benchmark, and assign them to the corresponding support monitoring zones. Specific implementation details include: The scaffold response monitoring module acquires data on the stress, nodal strain, vertical settlement, and horizontal displacement of the high-support uprights according to a unified time reference, and assigns the monitoring data to the corresponding support monitoring zones. This module's function is not simply to read sensor values, but to organize monitoring data of different types, locations, and sampling frequencies into scaffold response segments that correspond to the pouring load process. This provides a response-side basis for the subsequent deviation identification module to determine the consistency between the load process and the scaffold response changes.

[0059] Specifically, in the scenario of supervising the casting of high-formwork box girders, the high-formwork system includes uprights, horizontal bars, scissor braces, top supports, bases, formwork support components, and support foundations.

[0060] The frame response monitoring module deploys or connects corresponding monitoring points to different support supervision zones. Among them, the upright stress monitoring point is used to reflect the changes in the vertical load borne by the uprights within the support supervision zone; the node strain monitoring point is used to reflect the deformation response of the horizontal bar connection node, scissor brace connection node or key stress node; the vertical settlement monitoring point is used to reflect the downward displacement of the support foundation, base or support node in the vertical direction; and the horizontal displacement monitoring point is used to reflect the displacement changes of the frame in the longitudinal, transverse or lateral constraint positions of the bridge.

[0061] During the data acquisition phase, the scaffold response monitoring module receives various types of monitoring data according to a unified time base, specifically including: Since the force on the uprights, the strain at the nodes, the vertical settlement and the horizontal displacement may come from different acquisition devices, and the sampling interval, upload delay and timestamp format of different devices may not be completely consistent, the frame response monitoring module first corrects the acquisition time of each monitoring data. Specifically, the unified clock of the pouring supervision platform can be used as the time reference, and the data uploaded by each monitoring point can be classified into the corresponding sampling period according to the sampling time. For data with a sampling frequency higher than the uniform sampling period, data that can represent the state of change within that sampling period is selected as periodic data. For data with a sampling frequency lower than the unified sampling period, it is classified into the corresponding sampling period according to the most recent valid sample value, the trend of adjacent sampling changes, or the device upload time, and the missing test mark or the delayed test mark is retained.

[0062] For monitoring data with missing measurement markers, delayed markers, or significantly exceeding the trend of adjacent sampling changes, the frame response monitoring module does not directly use it as the basis for determining the response enhancement zone, but records it as data to be reviewed; When other monitoring points of the same or related types within the same supporting regulatory zone do not show changes in the same direction within a continuous sampling period, the data to be reviewed will not trigger the response enhancement zone marking. If the monitoring point recovers continuous and valid data in subsequent sampling periods, and its direction of change is consistent with other monitoring points in the same support supervision zone, the frame response monitoring module will then include it in the frame response segment sequence for deviation identification.

[0063] After time alignment is completed, the frame response monitoring module assigns each monitoring data point to the corresponding support supervision zone based on the attribution relationship between the monitoring points and the support supervision zones. This attribution relationship is predetermined by the supervision object mapping module. For example, the force sensor installed on a certain upright group belongs to the support supervision zone where the upright group is located; the strain monitoring point installed on the horizontal bar connection node or scissor brace connection node belongs to the support supervision zone where the connection node is located; the settlement monitoring point installed at the base, pad, or support foundation location belongs to the support supervision zone corresponding to the bottom support area; and the horizontal displacement monitoring point installed at the lateral constraint location of the frame or at the horizontal bar node belongs to the support supervision zone within its spatial range.

[0064] For monitoring points located near the boundary of two support supervision zones, the frame response monitoring module can determine the affiliation relationship according to its physical installation location, the affiliation of the connecting components, and the main response object. For example, if a horizontal displacement monitoring point is installed on the connecting crossbar between two support supervision zones, and if the crossbar mainly connects to the upright group of the first support supervision zone and moves with the upright group, then the monitoring point is affixed to the first support supervision zone. If the monitoring point is used to reflect the relative displacement between two supporting regulatory zones, it can be used as a boundary monitoring point, and associated with two adjacent supporting regulatory zones. It can also be used to determine whether the abnormal response is transmitted to the adjacent supporting regulatory zones when the deviation is identified.

[0065] Within a sampling period, the scaffold response monitoring module organizes the monitoring data within the same support supervision zone to form a scaffold response segment for that support supervision zone. This scaffold response segment includes at least a support supervision zone identifier, a sampling period identifier, changes in upright stress, changes in node strain, changes in vertical settlement, changes in horizontal displacement, and a data validity marker. Specifically, changes in upright stress can be obtained by comparing the upright stress value in the current sampling period with the upright stress value in the previous sampling period; changes in node strain can be obtained by comparing the node strain value in the current sampling period with the reference strain value or the strain value in the previous sampling period; changes in vertical settlement can be obtained by comparing the settlement value in the current sampling period with the reference settlement value before pouring or the settlement value in the previous sampling period; and changes in horizontal displacement can be obtained by comparing the horizontal displacement value in the current sampling period with the initial position or the position in the previous sampling period.

[0066] For example, within a certain support monitoring zone below the left web, the scaffold response monitoring module receives data from two upright stress monitoring points, one node strain monitoring point, two settlement monitoring points, and two horizontal displacement monitoring points within the same sampling period. The scaffold response monitoring module first assigns these data to the same sampling period according to the sampling time, and then confirms that they all belong to the support monitoring zone below the left web based on the location of the monitoring points. Subsequently, it calculates the stress change, settlement change, and horizontal displacement change respectively, and combines the above changes within the sampling period into a scaffold response segment for the support monitoring zone.

[0067] When reading this segment later, it can be directly determined whether the supporting monitoring zone exhibits response characteristics such as increased stress, settlement expansion, or amplified horizontal displacement within the sampling period.

[0068] Furthermore, the scaffold response monitoring module is also used to identify response enhancement zones. A response enhancement zone refers to multiple monitoring points within the same support supervision zone showing changes in the same direction within a continuous sampling period, indicating that the scaffold response of the zone has a continuous enhancement trend. Moreover, the same direction of change does not require all monitoring data values ​​to be exactly the same, but rather that the change direction of multiple monitoring points all points in the direction of increased risk.

[0069] For example, if multiple pole stress monitoring points show a continuous increase in stress, it indicates that the load-bearing response of the zone is enhanced; if multiple settlement monitoring points show a continuous increase in vertical displacement, it indicates that the settlement response of the zone is enhanced; if multiple horizontal displacement monitoring points show a continuous shift in the same lateral or longitudinal direction, it indicates that the lateral displacement response of the zone is enhanced; if the increase in stress, settlement, and horizontal displacement occur consecutively within the same support monitoring zone, it can also be determined that the support monitoring zone has a trend of comprehensive enhanced response.

[0070] When determining the response enhancement zone, the frame response monitoring module first determines the continuous sampling period window, which can be set according to the monitoring accuracy and sampling interval, such as two or more consecutive sampling periods. Then, the module checks the direction of change of multiple monitoring points within the same supporting regulatory zone within this window; If multiple monitoring points of the same type continue to change in the direction of risk, or if different types of monitoring points show a common trend of increased stress, settlement or displacement, then the supporting regulatory zone is marked as a response enhancement zone. If only a single monitoring point experiences a short-term sudden change, while other monitoring points do not show the same direction of change, the module can temporarily mark it as a single-point anomaly or data to be reviewed, instead of directly identifying the entire support supervision zone as a response enhancement zone.

[0071] For example, in the main load-bearing support monitoring zone below the left web of the first longitudinal beam segment, multiple upright stress monitoring points showed increased stress over three consecutive sampling periods, while multiple settlement monitoring points showed increased vertical settlement, and horizontal displacement monitoring points also showed continuous shift to the same side. In this case, the frame response monitoring module marks the support monitoring zone as a response enhancement zone. This marking indicates that the frame response of the support monitoring zone has a continuously enhancing characteristic, and further consistency judgment needs to be made by combining the current load application location, load accumulation process, and allowable response range.

[0072] For example, in a support monitoring zone under a certain crossbeam, if only one pole stress monitoring point shows a large fluctuation in a single sampling period, while adjacent pole stress monitoring points, settlement monitoring points, and horizontal displacement monitoring points do not show continuous changes in the same direction, the frame response monitoring module can retain this data as a single-point fluctuation and continue to check it in subsequent sampling periods, instead of immediately marking the support monitoring zone as a response enhancement zone. This can reduce the impact of noise from a single sensor, instantaneous disturbances, or data delays on the risk identification results.

[0073] In terms of data organization, the scaffold response monitoring module can continuously maintain a scaffold response segment sequence for each support supervision zone. This segment sequence is arranged according to the sampling period. Each segment records the stress changes, node strain changes, settlement changes, horizontal displacement changes, data validity marks, and whether it belongs to the response enhancement zone for the support supervision zone within the corresponding sampling period. When determining positional deviation, amplitude deviation, timing deviation, and extended deviation, the deviation identification module can directly call the corresponding frame response segment sequence supporting the regulatory zone without re-analyzing the original monitoring data.

[0074] Through the above processing, the scaffold response monitoring module unifies different types of monitoring data under the same time benchmark, avoiding misjudgments caused by time inconsistencies between load and response data; at the same time, it assigns monitoring point data to specific support and supervision zones, so that scaffold responses can be mapped to specific supervision objects; the scaffold response monitoring module characterizes the response changes of each support and supervision zone within a continuous sampling period through scaffold response segments, so that subsequent deviation identification no longer relies on isolated single-point thresholds; the scaffold response monitoring module can filter out short-term single-point fluctuations and highlight scaffold abnormal responses with continuity, regionality, and directional consistency through response enhancement zone marking.

[0075] The deviation identification module is used to determine the consistency between the load application process and the changes in the frame response based on the correspondence between the pouring supervision zone and the support supervision zone, identifying positional deviation, amplitude deviation, temporal deviation, and extended deviation. Specific implementation details include: When performing consistency determination, the deviation identification module first reads the current load application location output by the load tracking module. The current load application location refers to the pouring supervision zone that actually receives the newly added concrete volume in the current sampling period or continuous sampling period, such as the left web pouring supervision zone, bottom slab pouring supervision zone, or transverse beam pouring supervision zone of a certain longitudinal beam segment.

[0076] The deviation identification module then calls the correspondence established by the monitoring object mapping module to determine the main load-bearing support monitoring zone and the adjacent support monitoring zone corresponding to the current load application position. The main load-bearing support monitoring zone refers to the high formwork support area that directly bears the load transfer of the pouring monitoring zone, and the adjacent support monitoring zone refers to the support area that is adjacent to the main load-bearing support monitoring zone and is located on the load diffusion path or the frame deformation transfer path.

[0077] For example, when the current load is applied to the left web of the first longitudinal beam segment, the deviation identification module determines that the support supervision zone below the left web is the main load-bearing support supervision zone. At the same time, the support supervision zones below the bottom slab and below the transverse beam, which are adjacent to it and may be affected by load diffusion, are identified as adjacent support supervision zones. Subsequent deviation identification will no longer make indiscriminate judgments on all monitoring points, but will make targeted judgments based on the current load application location and its corresponding support supervision zone.

[0078] Position deviation is used to identify situations where the location of an abnormal response does not match the current load application location, specifically including: In this embodiment, the frame response monitoring module marks a certain support supervision zone as a response enhancement zone based on whether multiple monitoring points change in the same direction within a continuous sampling period. After the deviation identification module reads the response enhancement zone, it compares it with the main load-bearing support supervision zone and the adjacent support supervision zone corresponding to the current load application position. If the response enhancement zone belongs to the main load-bearing support supervision zone corresponding to the current load application location, it indicates that the response enhancement in this area has a load application basis and is not judged as a location deviation for the time being. If the response enhancement zone belongs to the adjacent support supervision zone, it indicates that the response may come from load diffusion or the linkage effect of the frame, and further judgment is needed based on the magnitude and expansion. If the response enhancement zone does not belong to either the main load-bearing support supervision zone or the adjacent support supervision zone, it indicates that the abnormal response occurs in a support area that has no direct correspondence with the current load application location, and this is judged as a position deviation.

[0079] For example, if the current pouring load mainly acts on the left web pouring monitoring zone, but the response enhancement zone appears in the right web support monitoring zone, which is far away from the left web area, and the right web support monitoring zone is neither the main load-bearing support monitoring zone corresponding to the current load application location nor on its adjacent load diffusion path, then the deviation identification module determines that the state is a position deviation. This position deviation may reflect an abnormal overall force path of the frame, uneven changes in the support foundation, abnormal force transmission of the transverse connecting components, or an independent risk in the monitoring area.

[0080] For example, when the current load is applied to the diaphragm casting monitoring zone, the support monitoring zone below the diaphragm shows an enhanced response, and the left and right web support monitoring zones also show a slight enhanced response. Since the left and right web support monitoring zones are adjacent to the main load-bearing support monitoring zone below the diaphragm, the deviation identification module does not directly determine it as a positional deviation, but continues to determine whether its response amplitude exceeds the corresponding allowable response range, or whether there is a trend of continuous outward expansion.

[0081] Through the above processing, the position deviation can identify risks such as abnormal responses occurring in locations where they should not occur. Compared with single-point threshold alarms, it can better reflect the spatial consistency between the area where the pouring load is applied and the response area of ​​the support frame.

[0082] Amplitude deviation is used to identify situations where the frame response appears within the corresponding or adjacent support monitoring zone, but the response amplitude exceeds the allowable range under the current load conditions.

[0083] In this embodiment, after confirming that the response enhancement zone belongs to the main load-bearing support supervision zone or the adjacent support supervision zone, the deviation identification module further reads the response allowable range corresponding to the support supervision zone. The response allowable range is configured by the supervision object mapping module and includes the force allowable range, settlement allowable range and horizontal displacement allowable range. The main load-bearing support supervision zone adopts the response allowable range corresponding to the current casting supervision zone load state, and the adjacent support supervision zone adopts the response allowable range corresponding to the load diffusion path.

[0084] The deviation identification module compares the force changes, settlement changes, and horizontal displacement changes in the response enhancement zone with the corresponding allowable response ranges. If any response change exceeds the allowable range of the corresponding response, it is determined as amplitude deviation. Amplitude deviation does not refer to whether the absolute value exceeds the unified alarm limit, but rather to whether the frame response of the support monitoring zone exceeds the allowable range under the current load application location, load accumulation process, and load change trend.

[0085] For example, the current load acts on the left web casting supervision zone, and the support supervision zone below the left web is the main load-bearing support supervision zone. The force and settlement of its uprights are allowed to increase within a certain range with the accumulation of load. If the force change, settlement change or horizontal displacement change in this area is still within the allowable response range, it means that its response is basically matched with the current load process. If the settlement change in the area significantly exceeds the allowable settlement range, or the horizontal displacement change exceeds the allowable horizontal displacement range, it indicates that the response amplitude of the support monitoring zone to the load is abnormal, and the deviation identification module determines it as amplitude deviation.

[0086] For example, the current load acts on the transverse diaphragm casting supervision zone, the support supervision zone below the transverse diaphragm is the main load-bearing support supervision zone, and the adjacent web support supervision zone is on the load diffusion path; If an adjacent web support monitoring zone shows an enhanced response, but its stress and settlement changes significantly exceed the allowable response range of the adjacent zone, it indicates that the load diffusion effect has exceeded the normal range, and the deviation identification module will also determine it as an amplitude deviation.

[0087] Through the above processing, the amplitude deviation can identify risk conditions where the response position is reasonable but the response intensity is abnormal. It is applicable to discovering problems such as insufficient local support stiffness, insufficient foundation bearing capacity, loose support nodes, or abnormal local settlement.

[0088] The time-series deviation is used to identify situations where the load has stabilized, but the settlement or horizontal displacement of the corresponding supported monitoring zone continues to increase. Specific details include: In this embodiment, the deviation identification module first reads the load change trend output by the load tracking module. When the load change trend of a certain pouring supervision zone meets the stability judgment condition, the deviation identification module uses the subsequent continuous sampling period as the time series verification window. The stability judgment condition may include: The current pouring supervision zone has not received any new concrete volume during the continuous sampling period; or the load increment during the continuous sampling period is lower than the preset load fluctuation boundary; or the cumulative load of the zone remains within a small fluctuation range.

[0089] Within the time-series verification window, the deviation identification module continuously reads the frame response segments of the corresponding support monitoring zone, focusing on checking whether the vertical settlement and horizontal displacement still maintain an increasing trend. If the load change trend has entered a stable state, but the vertical settlement or horizontal displacement of the corresponding support monitoring zone continues to increase within the continuous sampling period, it indicates that the frame response lags behind the load action process. There may be situations such as continued compression of the support foundation, loosening of nodes, accumulation of member deformation, or reduced lateral stability. The deviation identification module determines this as a time-series deviation.

[0090] For example, after a certain period of pouring, the load tracking module shows that no new concrete volume has entered the monitoring zone of the left web plate, and the cumulative load has entered a stable state. Under normal circumstances, the settlement and horizontal displacement of the monitoring zone of the main load-bearing support under the left web plate should also gradually stabilize. If the vertical settlement of the monitoring zone of the support continues to increase or the horizontal displacement continues to expand in the same direction in several subsequent consecutive sampling periods, the deviation identification module will determine it as a time sequence deviation.

[0091] For example, after the diaphragm beam casting monitoring zone is completed, the load increment is close to zero, but the adjacent web support monitoring zone still shows continuous settlement growth, indicating that the abnormal response has not stabilized synchronously with the load stabilization. There may be a load transfer effect or delayed deformation of the local support foundation. The deviation identification module can also determine it as a time sequence deviation.

[0092] Timing deviation is not just about whether the response value exceeds the limit at a certain moment, but about whether the load application process and the frame response process are consistent in terms of time. Even if the settlement or horizontal displacement has not yet reached the traditional alarm limit, as long as it continues to increase after the load stabilizes, it can be used as an early signal of risk evolution.

[0093] Extended deviation is used to identify situations where abnormal responses propagate continuously from the initial support monitoring zone to adjacent support monitoring zones, and the direction of propagation is inconsistent with the direction of change of the current load application location. Specific details include: The deviation identification module records the order of occurrence and spatial position changes of the response enhancement partitions within a continuous sampling period. If a certain support monitoring partition is first marked as a response enhancement partition, and then the adjacent support monitoring partition is also marked as a response enhancement partition in subsequent sampling periods, the deviation identification module considers that there is a transmission phenomenon of abnormal response. At this time, the module further determines whether the transmission direction is consistent with the change direction of the current load position.

[0094] If the transmission direction of the abnormal response is consistent with the advancement direction of the pouring load position, and the response amplitude is within the allowable range of the corresponding response, then the transmission of the response can be considered as a linkage change of the frame caused by the normal advancement of the load. If the abnormal response is continuously transmitted from the initial support monitoring zone to the adjacent support monitoring zone, but the transmission direction is inconsistent with the change direction of the current load application position, it indicates that the abnormal response may not be caused by the normal pouring load, but by local instability of the frame, abnormal force transmission at the nodes, deformation diffusion of the support foundation, or weakening of the overall constraint. In this case, it is judged as an extended deviation.

[0095] For example, if the current pouring load is advancing from the left web area to the bottom plate area, under normal circumstances, the support areas in the same direction as the load's advance may show reasonable responses in sequence. However, if an abnormal response first appears in the support monitoring zone below the left web, and then continuously expands to the outer support monitoring zone away from the current pouring direction, and this outer zone is not the main area on the current load diffusion path, then the deviation identification module determines it as an expanded deviation.

[0096] For example, if the current load is applied to the transverse diaphragm casting monitoring zone and does not extend to the adjacent web area, but the enhanced response of the frame is continuously transmitted from the support monitoring zone below the transverse diaphragm to multiple adjacent web support monitoring zones, and the transmission process continues for multiple sampling cycles, it indicates that the abnormal response is expanding along the support system, rather than being caused by normal changes in the casting position. The deviation identification module determines this as an expanded deviation.

[0097] Extended deviation can reflect the risk of local anomalies spreading to surrounding support areas, and it can better reflect the overall stability change trend of high-support formwork than the response limit exceedance of a single support regulatory zone.

[0098] In one specific embodiment, the deviation identification module may perform consistency determination in the following order, specifically including: First, the module reads the current load application location and determines the corresponding main load-bearing support monitoring zone and adjacent support monitoring zone; second, the module reads the response enhancement zone output by the frame response monitoring module and determines whether the response enhancement zone belongs to the main load-bearing support monitoring zone or the adjacent support monitoring zone. If it does not belong to the category, then the position is determined to be off-center; If it falls under this category, then continue to determine whether the changes in force, settlement, and horizontal displacement exceed the allowable range of the corresponding response. If they do, then the amplitude is determined to be deviated.

[0099] Then, the module reads the load change trend and determines whether the current load action zone meets the stability judgment condition. If it does, a time sequence check window is established, and the vertical settlement or horizontal displacement of the corresponding support monitoring zone is determined to continue to increase within the window. If it continues to increase, the time sequence is determined to be deviated.

[0100] Finally, the module records the spatial changes of the abnormal response partitions within the continuous sampling period, determines whether the abnormal response is continuously transmitted from the initial support monitoring partition to the adjacent support monitoring partition, and further determines whether the transmission direction is consistent with the change direction of the current load application position. If they are inconsistent, then the expansion is determined to be deviated.

[0101] The above four types of deviations can occur individually or in combination. For example, if a certain support monitoring zone does not belong to the main load-bearing support monitoring zone or the adjacent support monitoring zone corresponding to the current load position, and the settlement continues to increase, then the position deviation and the time deviation can be marked at the same time. For example, if the settlement of a primary load-bearing support monitoring zone exceeds the allowable response range and is continuously transmitted to adjacent support monitoring zones in subsequent sampling cycles, both magnitude deviation and extended deviation can be marked simultaneously. The deviation identification module outputs the above deviation type, trigger sampling cycle, abnormal support monitoring zone, and trigger monitoring data to the prevention and control closed-loop module for subsequent risk level determination.

[0102] In one specific embodiment, the left web area of ​​the first longitudinal beam segment of the cast-in-place box girder is being poured. The load tracking module determines that the current load mainly acts on the left web pouring supervision zone based on the placement position and concrete volume, and records that the load in this area is continuously accumulating. The supervision object mapping module has determined that the support supervision zone below the left web is the main load-bearing support supervision zone, and the support supervision zone below the bottom plate and the support supervision zone below the transverse diaphragm near the left web are adjacent support supervision zones.

[0103] During the continuous sampling period, the frame response monitoring module found that multiple pole stress monitoring points and settlement monitoring points in the support supervision zone below the left web plate all changed in the same direction. Therefore, this area was marked as a response enhancement zone. The deviation identification module determined that the response enhancement zone belonged to the main load-bearing support supervision zone corresponding to the current load position, so it was not judged as a position deviation. The module then compares its stress changes, settlement changes, and horizontal displacement changes with the corresponding allowable response ranges. If the settlement change exceeds the allowable range, it is determined to be an amplitude deviation.

[0104] If the load change trend meets the stability judgment condition after the addition of concrete volume in the left web area is stopped, but the settlement of the support monitoring zone under the left web continues to increase within the continuous sampling period, the deviation identification module will further determine it as a time sequence deviation. If the abnormal response is subsequently transmitted continuously from the support monitoring zone below the left web to the outer support monitoring zone in the non-pouring direction, the deviation identification module will determine it as an extended deviation.

[0105] The closed-loop prevention and control module is used to determine the risk level of high-support formwork pouring based on the deviation type, deviation duration, and the scope of the supporting regulatory zones involved, and to generate a closed-loop safety prevention and control record of associated risk levels, triggering deviation types, handling requirements, and review status. Specific implementation content includes: The prevention and control closed-loop module determines the risk level of high formwork pouring based on the occurrence of four types of deviations. The risk level includes at least the attention level, the early warning level, and the control level. Different levels are determined based on the type of deviation, the duration of the deviation, and the scope of the abnormal impact.

[0106] First, when only a single supporting regulatory zone shows a deviation in magnitude, and the duration of this deviation does not reach the warning continuity boundary, the prevention and control closed-loop module determines it to be at the attention level. Here, the attention level is used to indicate that a certain supporting regulatory zone has shown a local response magnitude abnormality, but the abnormality has not yet shown a trend of continuous development or expansion.

[0107] For example, if the settlement change in a monitoring zone below a left web plate temporarily exceeds the allowable range of the corresponding response, but only lasts for one sampling cycle, and no abnormalities are found in adjacent monitoring zones, the system can identify it as a level of concern and require monitoring and verification.

[0108] Secondly, when the same supporting regulatory zone deviates in magnitude or timing within a continuous sampling period, the prevention and control closed-loop module determines it as an early warning level. Here, the early warning level is used to indicate that the anomaly has the characteristics of continuous or delayed development.

[0109] For example, if the settlement of a certain main load-bearing support monitoring zone exceeds the allowable response range in multiple consecutive sampling periods, or if the vertical settlement of the support monitoring zone continues to increase after the trend of the pouring load has entered a stable state, it indicates that there may be risks such as insufficient local support stiffness, continued foundation compression, or loose nodes in the area, and the system will determine it as an early warning level.

[0110] Furthermore, when location deviation, extended deviation, or anomalies occur in multiple support monitoring zones within the same or consecutive sampling periods, the prevention and control closed-loop module determines them to be at the control level. Location deviation indicates that the abnormal response occurs in an area that does not match the current load application location, which may reflect an abnormal force transmission path or independent risks in non-corresponding areas. Extended deviation indicates that the abnormal response is continuously transmitted to adjacent support monitoring zones, which may reflect the spread of local anomalies to the surrounding areas. Synchronous or continuous anomalies in multiple support monitoring zones indicate that the risk is no longer limited to a single area. Therefore, such situations are determined to be at the control level.

[0111] In this embodiment, the warning duration boundary can be represented by the number of consecutive sampling periods or the duration of the abnormality. For example, it can be set as the occurrence of the same type of deviation for two or more consecutive sampling periods, or the deviation not being eliminated within a preset time period. The warning duration boundary can be configured according to the uniform sampling period, monitoring accuracy requirements, supporting regulatory zone type, and risk sensitivity of the pouring stage.

[0112] After determining the risk level of high-support formwork pouring, the prevention and control closed-loop module forms a safety prevention and control closed-loop record. This closed-loop record is used to organize the risk identification results, handling requirements and review status into a complete event record, which facilitates subsequent supervision, traceability and resolution judgment.

[0113] In one embodiment, the safety control closed-loop record includes risk level, trigger deviation type, corresponding pouring supervision zone, abnormal support supervision zone, trigger sampling cycle, abnormal response data, handling requirements, and review conditions. The risk level is used to indicate whether the risk event is subject to attention, warning, or control. The trigger deviation type is used to record one or more of the following: position deviation, magnitude deviation, time sequence deviation, or extended deviation. The corresponding pouring supervision zone is used to indicate the box girder pouring area under the current load or risk association; The abnormal support monitoring zone is used to indicate the high formwork support area where abnormal response occurs; The trigger sampling period is used to record the time window in which a risk event is first triggered. Abnormal response data is used to record the force changes, settlement changes, horizontal displacement changes, or response enhancement states that trigger the event; The handling requirements are used to indicate the regulatory handling measures that should be taken under this risk level; The review criteria are used to indicate the basis for determining whether the risk event can be resolved.

[0114] Different risk levels correspond to different handling requirements, specifically including: For the level of concern, the closed-loop prevention and control module generates monitoring and review prompts. These prompts may include verifying the validity of the data at the corresponding monitoring points, confirming the existence of single-point fluctuations, extending the sampling observation window, and reviewing the response change trends of the corresponding supporting regulatory zones. This level of concern is mainly used to prevent short-term fluctuations from being directly upgraded to high risk, while retaining early traces of anomalies.

[0115] For the warning level, the prevention and control closed-loop module generates regional verification requirements. These requirements may include verifying whether the stress changes, settlement changes, and horizontal displacement changes of the abnormal support supervision zone are continuous, verifying whether the load accumulation process of the corresponding pouring supervision zone conforms to the pouring plan, verifying whether the response enhancement of adjacent support supervision zones has occurred, and requiring the formation of regional review results. This level is used to prompt supervisory personnel or the supervisory platform to pay close attention to the abnormal state that has been developing.

[0116] Regarding the control level, the prevention and control closed-loop module generates safety handling requirements and verification and confirmation requirements. Safety handling requirements may include key verification of abnormal support supervision zones, verification of the load status of related pouring supervision zones, continuous monitoring of adjacent support supervision zones involved in the risk expansion direction, and the formation of special handling records. Verification and confirmation requirements are used to limit the release of control level events. Continuous verification sampling and consistency re-determination must be carried out before the event is released. It cannot be released based on a single data recovery.

[0117] It should be noted that the handling requirements in this embodiment belong to the closed-loop content of safety supervision and prevention and control, and are used for prompting, reviewing, verifying and recording.

[0118] In this embodiment, the security control closed-loop record can have a pending review status, an in-process status, a review status, and a deactivated status, specifically including: After a risk event is generated, the prevention and control closed-loop module first marks the closed-loop record as pending review. When the corresponding handling requirements are confirmed or executed, the closed-loop record is switched to the handling status. When the sampled data is collected for review after processing and the re-evaluation begins, the closed-loop record switches to the review status. Once the release condition is met, the closed-loop record switches to the release state.

[0119] For example, when a certain supporting regulatory zone deviates continuously and is identified as an early warning level, the prevention and control closed-loop module generates regional verification requirements and records the risk event as pending review. If the regulatory personnel complete the regional verification and submit the review results, the system obtains the review sampling data after the handling, and the record enters the review status. If the deviation is eliminated during subsequent continuous verification sampling periods, and the frame response changes return to within the allowable response range, the prevention and control closed-loop module will switch the record to the deactivated state.

[0120] By setting a closed-loop status, the system can avoid the problem of no follow-up processing after an alarm or the termination of the process without verification of the anomaly, so that every risk event has a clear triggering, handling, verification and resolution process.

[0121] After handling, the closed-loop prevention and control module obtains the verification sampling data and re-inputs the verification sampling data into the deviation identification module to determine the consistency between the load action process and the changes in the frame response; Specifically, the reviewed sampling data includes the load application location, load accumulation process, load change trend, pole stress change, nodal strain change, vertical settlement change, and horizontal displacement change within the continuous sampling period after treatment; The prevention and control closed-loop module does not directly resolve the risk event based on the return to normal of a single monitoring value. Instead, it resubmits the reviewed sampling data to the deviation identification module for the same consistency judgment. The deviation identification module then re-judges whether the supporting regulatory zone still has positional deviation, magnitude deviation, temporal deviation, or extended deviation.

[0122] If the reassessment results show that the deviation of the corresponding support supervision zone is eliminated within the continuous review sampling period, and the stress change, settlement change and horizontal displacement change of the support supervision zone are all restored to the corresponding response allowable range, then the prevention and control closed loop module switches the safety prevention and control closed loop record to the release state. The continuous review sampling period here can be set according to the risk level. For example, the attention level can require a shorter continuous review period, while the warning level and control level can require a longer continuous review period or more stringent review conditions.

[0123] It should be noted that if there are still missing test markers or delayed markers in the reviewed sampling data, or if there are still response enhancement zone markers in the supporting regulatory zones during the continuous review sampling period, the prevention and control closed-loop module will not switch the safety and control closed-loop record to the released state, but will continue to maintain the review status. If a deviation in location, magnitude, timing, or expansion occurs again during the review process, the prevention and control closed-loop module will redetermine the risk level based on the new deviation type and scope, and update the safety prevention and control closed-loop record.

[0124] For example, a monitoring zone supported below a certain left web plate was identified as being at an early warning level due to continuous settlement. After the intervention, the control closed-loop module continuously acquired settlement data, horizontal displacement data, and corresponding load status over multiple verification sampling cycles. If the deviation identification module reassesses and finds that there is no longer any temporal deviation in the area, the settlement change tends to stabilize, the horizontal displacement change returns to the allowable range, and no extended deviation occurs in the adjacent support monitoring zone, then the prevention and control closed-loop module switches the risk event to the deactivated state.

[0125] For example, if a monitoring zone for the support below a certain diaphragm was identified as being under control due to an abnormal response that was transmitted to the adjacent monitoring zone for the web support, then during the review phase, the system will not only check whether the monitoring zone for the support below the diaphragm itself has recovered, but also check whether the adjacent monitoring zones for the web support continue to have enhanced or expanded deviations in response. Only when the abnormal transmission status is eliminated within the continuous review sampling period, and all the monitoring zones involved have recovered to the corresponding allowable response range, will the closed-loop record be switched to the release status.

[0126] When the safety control closed-loop record is switched to the deactivated state, the control closed-loop module will write the deactivated time, verification result and handling process into the high formwork pouring safety supervision file. This file is used to leave a trace of the entire pouring supervision process.

[0127] In one embodiment, the safety supervision file for high-support formwork casting includes the risk event number, the corresponding casting supervision zone, the abnormal support supervision zone, the risk level change process, the trigger deviation type, the first trigger time, the trigger sampling cycle, the abnormal response data, the handling requirements, the review sampling data, the review judgment result, the release time, and the handling process description. If the same risk event does not meet the release conditions after handling, the system retains its review failure result and continues to maintain the review status or updates the risk level according to the new deviation identification result.

[0128] For example, in the risk event corresponding to the left web casting supervision zone of the first longitudinal beam segment, the system records that the event was triggered by amplitude deviation, the risk level was upgraded from concern level to warning level, the abnormal support supervision zone is the main load-bearing support supervision zone below the left web, the triggering basis is that the settlement change within the continuous sampling period exceeds the corresponding response allowable range, after handling, the system records that the reviewed sampling data shows that the settlement change has returned to the allowable range, and the deviation identification module re-determines that there is no more time sequence deviation and extended deviation, and then writes the release time and review result. Through this file, the entire process of triggering, upgrading, handling, review and release of the risk event can be traced.

[0129] In one specific embodiment, the current pouring monitoring zone is the left web area of ​​the first longitudinal beam segment. The load tracking module shows that this area is in a state of continuous load accumulation, and the frame response monitoring module finds that the support monitoring zone below the left web shows settlement growth and increased stress on the uprights during continuous sampling periods. The deviation identification module determines that it is an amplitude deviation.

[0130] If the deviation occurs only in a single support monitoring zone below the left web and the duration has not yet reached the warning continuity boundary, the prevention and control closed-loop module will determine the event as a concern level and generate a monitoring review prompt, prompting continuous observation of the settlement monitoring points and pole stress monitoring points of the support monitoring zone, while recording the trigger sampling cycle and abnormal response data.

[0131] If the amplitude of the support monitoring zone still deviates within subsequent continuous sampling periods, or if the settlement continues to increase after the load change trend in the left web area has entered a stable state, the prevention and control closed-loop module will determine the event as an early warning level and generate regional verification requirements. The regional verification requirements include verifying the load accumulation process of the left web casting monitoring zone, reviewing the settlement and stress changes of the support monitoring zone below the left web, and verifying whether there is an increase in response in the support monitoring zone below the adjacent bottom plate.

[0132] If the abnormal response is further found to be continuously expanding from the support supervision zone below the left web to the outer support supervision zone that is not in the direction of the current load advancement, the deviation identification module outputs the expanded deviation. The prevention and control closed-loop module determines the risk level as the control level and generates safety handling requirements and review confirmation requirements. At this time, the risk level, trigger deviation type, abnormal support supervision zone, handling requirements and review conditions associated in the closed-loop record can only be switched to the release state after the expanded deviation is eliminated within the continuous review sampling period and the changes in the frame response involving the support supervision zone have all returned to the allowable response range.

[0133] In summary, the closed-loop control module can transform the front-end monitoring and deviation identification results into an executable, verifiable, and traceable safety control process, extending the supervision of high-formwork casting of cast-in-place box girders from the discovery of anomalies to risk classification, handling records, review and resolution, and record keeping, thereby improving the continuity of risk supervision for high-formwork casting.

[0134] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, in the form of a computer program product.

[0135] Those skilled in the art will recognize that the modules and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0136] In addition, the functional modules in the various embodiments of this application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module.

[0137] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0138] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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.

Claims

1. A smart monitoring and safety control system for high-formwork casting of cast-in-place box girders, characterized in that: It includes a monitoring object mapping module, a load tracking module, a frame response monitoring module, a deviation identification module, and a prevention and control closed-loop module; The monitoring object mapping module is used to establish the correspondence between the casting monitoring zone and the support monitoring zone according to the segmentation of the cast-in-place box girder structure, the arrangement of high formwork supports and the layout of monitoring points, and to configure the main load-bearing support monitoring zone, adjacent support monitoring zone and the response allowable range. The load tracking module is used to track the load application location, load accumulation process, and load change trend of each pouring supervision zone based on the placement location, pouring time, and concrete volume. The frame response monitoring module is used to acquire the stress, nodal strain, vertical settlement and horizontal displacement changes of the high formwork uprights according to a unified time benchmark, and assign them to the corresponding support supervision zone; The deviation identification module is used to determine the consistency between the load application process and the frame response changes based on the correspondence between the pouring supervision zone and the support supervision zone, and to identify position deviation, amplitude deviation, temporal deviation and extended deviation. The prevention and control closed-loop module is used to determine the risk level of high formwork pouring based on the deviation type, deviation duration and the scope of the supporting supervision zone involved, and to form a safety prevention and control closed-loop record of associated risk level, triggering deviation type, handling requirements and review status.

2. The intelligent monitoring and safety control system for high-formwork casting of cast-in-place box girders according to claim 1, characterized in that: The monitoring object mapping module divides the casting monitoring zones according to the longitudinal beam segments, transverse cross-sectional areas and casting sequence of the cast-in-place box girder, and divides the support monitoring zones according to the high formwork uprights, crossbar connection areas, scissor bracing arrangement areas and support foundation positions. Establish a correspondence between each pouring supervision zone and the supporting supervision zones within its load transfer range. Mark the supporting supervision zone that directly bears the load transfer of the pouring supervision zone as the main load-bearing supporting supervision zone, and mark the supporting supervision zones that are adjacent to the main load-bearing supporting supervision zones and are on the load diffusion path as adjacent supporting supervision zones.

3. The intelligent monitoring and safety control system for high-formwork casting of cast-in-place box girders according to claim 2, characterized in that: The allowable response range is configured based on the design bearing parameters, pole spacing, support height, foundation bearing conditions, and monitoring point type of each support monitoring zone, and forms the allowable stress range, allowable settlement range, and allowable horizontal displacement range, respectively. The main bearing support monitoring zone adopts the allowable response range corresponding to the load state of the current pouring monitoring zone, and the adjacent support monitoring zone adopts the allowable response range corresponding to the load diffusion path.

4. The intelligent monitoring and safety control system for high-formwork casting of cast-in-place box girders according to claim 3, characterized in that: The load tracking module reads the placement location, pouring time and concrete volume according to a unified sampling period, matches the placement location to the corresponding pouring supervision zone, converts the concrete volume entering the pouring supervision zone in the current sampling period into load increment, and determines the load accumulation process and load change trend based on the load increment changes in continuous sampling periods. When the cumulative load difference between adjacent pouring supervision zones exceeds the equilibrium boundary of the corresponding zone, the load concentration state of that pouring supervision zone is marked.

5. The intelligent monitoring and safety control system for high-formwork casting of cast-in-place box girders according to claim 4, characterized in that: The frame response monitoring module samples and aligns the changes in pole stress, node strain, vertical settlement, and horizontal displacement according to a unified time reference. Based on the relationship between the monitoring points and the support supervision zones, it organizes the changes in stress, settlement, and horizontal displacement within the same support supervision zone into frame response segments. When multiple monitoring points within the same support and supervision zone show changes in the same direction within a continuous sampling period, the support and supervision zone is marked as a response enhancement zone.

6. The intelligent monitoring and safety control system for high-formwork casting of cast-in-place box girders according to claim 5, characterized in that: When performing consistency determination, the deviation identification module first determines the corresponding main load-bearing support supervision zone and adjacent support supervision zone based on the current load application position. When the response enhancement partition does not belong to the main bearer support supervision partition or the adjacent support supervision partition, it is determined to be a position deviation; When the response enhancement zone belongs to the main load-bearing support supervision zone or the adjacent support supervision zone, but its stress change, settlement change or horizontal displacement change exceeds the corresponding response allowable range, it is determined to be an amplitude deviation.

7. The intelligent monitoring and safety control system for high-formwork casting of cast-in-place box girders according to claim 6, characterized in that: When performing consistency determination, the deviation identification module uses the continuous sampling period after the load change trend meets the stability determination condition as the time-series verification window. If the vertical settlement or horizontal displacement of the corresponding support monitoring zone continues to increase within the time sequence verification window, it is determined to be a time sequence deviation. If the abnormal response is continuously transmitted from the initial support monitoring zone to the adjacent support monitoring zone, and the transmission direction is inconsistent with the direction of change of the current load application location, it is determined to be an extended deviation.

8. The intelligent monitoring and safety control system for high-formwork casting of cast-in-place box girders according to claim 7, characterized in that: The prevention and control closed-loop module determines the risk level of high formwork casting based on the occurrence of positional deviation, amplitude deviation, temporal deviation, and expansion deviation. When a single regulatory zone deviates significantly and the duration does not reach the warning continuity boundary, it is classified as a level of concern. When the same supporting regulatory zone shows deviation in magnitude or timing within a continuous sampling period, it is determined to be at the warning level; When a location deviation, expansion deviation, or anomalies occur in multiple supporting regulatory zones within the same sampling period or consecutive sampling periods, it is determined to be a control level.

9. The intelligent monitoring and safety control system for high-formwork casting of cast-in-place box girders according to claim 8, characterized in that: The prevention and control closed-loop module forms a safety prevention and control closed-loop record based on the risk level of high formwork pouring. The safety control closed-loop record includes risk level, trigger deviation type, corresponding pouring supervision zone, abnormal support supervision zone, trigger sampling cycle, abnormal response data, handling requirements and review conditions. Among them, the attention level corresponds to the generation of monitoring review prompts, the early warning level corresponds to the generation of regional verification requirements, and the control level corresponds to the generation of safety handling requirements and review confirmation requirements.

10. The intelligent monitoring and safety control system for high-formwork casting of cast-in-place box girders according to claim 9, characterized in that: The closed-loop prevention and control module acquires the verification sampling data after handling, and re-inputs the verification sampling data into the deviation identification module to determine the consistency between the load action process and the changes in the frame response. When the deviation of the corresponding support supervision zone is eliminated within the continuous review and sampling cycle, and the change in the frame response returns to the allowable response range, the corresponding safety control closed-loop record is switched to the release state, and the release time, review results and handling process are written into the high formwork casting safety supervision file.

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