Cap beam construction prediction and adjustment method and cap beam protection and support device

Abstract

The present application relates to the field of building construction safety protection technology, and in particular to a cap beam construction prediction and adjustment method and a cap beam protection support device. The support assembly is arranged between the first clamp assembly and the second clamp assembly. The current displacement of the detection piston of the pressure regulating assembly in the regulating cylinder is obtained. When the current displacement is greater than the displacement threshold, the pressure control chamber of the regulating cylinder is started to be pressurized, and the pressure provided to the pressure control chamber is controlled according to the current construction load, so that the pressure currently provided by the regulating cylinder to the support assembly can adapt to the current construction load changes, reduce or avoid the first clamp assembly pressing the support assembly to continue to move and slide, and improve construction safety. When it is judged that the current pressurization amount reaches the maximum pressurization amount, an alarm is triggered. The above method and device can promptly detect the displacement of the first clamp assembly, and can adjust the supporting force according to the changing construction load, reduce or avoid continued sliding, and improve construction safety.

Description

Technical Field

[0001] The present application relates to the field of building construction safety protection technology, and in particular to a cap beam construction prediction and adjustment method and a cap beam protection support device. Background Art

[0002] In bridge construction projects, the construction of bridge pier cap beams is a key link. At present, the widely used construction method is the hoop method, which installs a hoop consisting of two semi-circular arc steel plates at the appropriate position of the pier column and clamps them with high-strength bolts, thereby using the vertical friction between the hoop and the pier column to support the weight of the temporary facility platform and the weight of the cap beam for cap beam construction.

[0003] However, during the construction process, when the load exceeds the maximum friction force that the clamp can provide, the clamp and the temporary facility platform may move downward. If the clamp displacement is not discovered and handled in time, it may cause the bottom elevation of the cap beam to fail to meet the design requirements. In serious cases, it may even cause the entire temporary facility platform to become unstable and slide down, causing a major safety accident.

[0004] At present, the monitoring of clamp displacement mainly relies on real-time observation by equipment such as total stations or displacement sensors, and the displacement of the clamp is obtained by direct acquisition. The method of using total stations is not only labor-intensive, but also depends on the concentration and accuracy of the surveyors. Once the surveyors are negligent, it is easy to miss the best processing time. Although monitoring by displacement sensors can reduce dependence on manual labor, it is impossible to make predictions and judgments, and thus it is impossible to make timely treatments to improve safety. Therefore, traditional monitoring methods have certain limitations in timely detection and processing of clamp displacement. Summary of the invention

[0005] Based on this, it is necessary to provide a cap beam construction prediction and adjustment method and a cap beam protection and support device that can timely detect and deal with the displacement of the hoop to address the above problems.

[0006] A cap beam construction prediction and adjustment method, the method comprising:

[0007] Obtain the current construction load and the current displacement of the detection piston of the pressure regulating assembly in the regulating cylinder;

[0008] Determining whether the current displacement of the detection piston is greater than a displacement threshold;

[0009] If yes, start pressurizing the pressure control chamber of the regulating cylinder, and control the pressurization amount of the pressure control chamber according to the current construction load;

[0010] Determine whether the current pressurization amount reaches the maximum pressurization amount;

[0011] If so, the maximum pressurization is maintained and an alarm is triggered, wherein the support force applied by the support assembly under the maximum pressurization is less than or equal to the vertical friction force between the second clamp assembly and the pier column.

[0012] In one embodiment, the method comprises:

[0013] Predict the changing trend of construction load based on historical construction load data and current construction load;

[0014] Predicting the displacement change trend of the detection piston according to the predicted change trend of the construction load;

[0015] The amount of pressurization provided to the pressure control chamber is adjusted according to the displacement variation trend.

[0016] In one embodiment, predicting the displacement change trend of the detection piston according to the predicted change trend of the construction load includes:

[0017] According to the predicted construction load, the relationship model between the construction load F(t) and the predicted displacement x(t) of the detection piston is established as follows: x(t)=k F (t)·F(t)+d, where k F (t) is the load influence coefficient, and d is the offset of the detection piston displacement.

[0018] In one embodiment, the method comprises:

[0019] Analyze the influence of the change of the current construction load F(t) on the current displacement of the detection piston and update the load influence coefficient k F (t);

[0020] The load influence coefficient k is verified using the data of the current construction load F(t) and the current displacement within the preset time period. F (t), the load influence coefficient k is updated in a loop F (t) steps.

[0021] In one embodiment, adjusting the pressurization amount provided to the pressure control chamber according to the displacement change trend includes:

[0022] The displacement change rate of the detection piston is predicted to be:

[0023] The pressurization amount provided to the pressure control chamber is dynamically adjusted according to the displacement change rate as follows:

[0024] To adapt to the change of construction load F(t); where k x It is a proportional coefficient determined according to the system characteristics.

[0025] In one embodiment, the result of the displacement change trend analysis is fed back to the control system, using feedback control: The pressure control chamber is pressurized by closed-loop feedback control, where P ref is the reference pressure, e(t) is the difference between the target displacement and the actual displacement, k p and k d is the control gain.

[0026] In the above cap beam construction prediction and adjustment method, during construction, the support assembly is arranged between the first clamp assembly and the second clamp assembly, and the support force of the support assembly on the first clamp assembly can be adjusted by controlling the position of the detection piston of the pressure adjustment assembly in the adjustment cylinder. The current displacement of the detection piston of the pressure adjustment assembly in the adjustment cylinder is obtained. When it is judged that the current displacement of the detection piston is greater than the displacement threshold, the pressure control chamber of the adjustment cylinder is started to be pressurized, and the pressure provided to the pressure control chamber is controlled according to the current construction load, so that the pressure currently provided by the adjustment cylinder to the support assembly can adapt to the current construction load changes, reduce or avoid the first clamp assembly pressing the support assembly to continue to move downward, and improve construction safety. When it is judged that the current pressurization amount reaches the maximum pressurization amount, an alarm is triggered, wherein at the maximum pressurization amount, the total support force provided by the support assembly is less than the vertical friction between the second clamp assembly and the pier column, avoiding continued pressurization that causes the second clamp assembly to slide downward and cause a safety accident. The above method can timely detect the displacement of the first clamp assembly, and can adjust the supporting force according to the constantly changing construction load, reduce or avoid further sliding, thereby realizing timely detection and processing of the sliding of the first clamp assembly, and avoiding the occurrence of safety accidents caused by the instability and sliding of the entire construction platform.

[0027] A cap beam protection support device, the cap beam protection support device includes a first clamp assembly, a second clamp assembly, an adjustment detection mechanism and a controller, the second clamp assembly and the first clamp assembly are arranged at intervals, and the second clamp assembly is located below the first clamp assembly; the adjustment detection mechanism includes a support assembly, a displacement detection assembly and a pressure adjustment assembly, the support assembly is arranged between the first clamp assembly and the second clamp assembly, the support assembly is retractable between the first clamp assembly and the second clamp assembly, the displacement detection assembly is used to obtain the displacement of the support assembly, and the pressure adjustment assembly is used to control the supporting force of the support assembly; the pressure adjustment assembly and the displacement detection assembly are both electrically connected to the controller, and the controller is used to control the pressure adjustment assembly to adjust the supporting force of the support assembly according to the detection data of the displacement detection assembly and the current construction load.

[0028] In one of the embodiments, the support assembly includes a support cylinder body, a support piston and a support member, the support piston is movably arranged in the support cylinder body, the support cylinder body is arranged on the second clamp assembly, one end of the support member is connected to the support piston, and the other end abuts on the first clamp assembly, the distance between the support piston and the inner bottom wall of the support cylinder body is less than or equal to a preset safety distance, and the space formed between the support piston and the inner bottom wall of the support cylinder body is a support cavity; the pressure regulating assembly includes a regulating cylinder body and a detection piston, the detection piston is movably arranged in the regulating cylinder body, the detection piston divides the space in the regulating cylinder body into a pressure control cavity and a pressure regulating cavity, and the support cavity is connected to the pressure regulating cavity; the displacement detection assembly is used to detect the position of the detection piston in the regulating cylinder body; the controller is used to execute the cap beam construction prediction and adjustment method as described above.

[0029] In one embodiment, the displacement detection component includes a magnetostrictive waveguide wire, a magnetic element and a signal monitor, the magnetic element is arranged on the detection piston, the magnetostrictive waveguide wire is embedded in the adjustment cylinder, and the length direction of the magnetostrictive waveguide wire is the movement direction of the detection piston in the adjustment cylinder, the signal monitor is electrically connected to the magnetostrictive waveguide wire, and the signal monitor is used to detect the signal passing through the magnetostrictive waveguide wire.

[0030] In one embodiment, there are multiple support assemblies, and the multiple support assemblies are arranged at intervals around the axis of the first clamp assembly, and the support cavities of the support cylinders of the multiple support assemblies are connected to the pressure regulating cavity of the regulating cylinder.

[0031] In one of the embodiments, the first hoop assembly includes a first matching hoop plate and a first connecting hoop plate, and the first matching hoop plate and the first connecting hoop plate can be engaged with the pier column and locked, and the second hoop assembly includes a second matching hoop plate and a second connecting hoop plate, and the second matching hoop plate and the second connecting hoop plate can be engaged with the pier column and locked; wherein, a seam on one side of the first matching hoop plate and the first connecting hoop plate is aligned with the second matching hoop plate, and a seam on the other side is aligned with the second connecting hoop plate, and one end of at least two of the multiple support assemblies abuts against the first matching hoop plate, and the other end abuts against the second matching hoop plate and the second connecting hoop plate respectively, and one end of at least another two of the support assemblies abuts against the first connecting hoop plate, and the other end abuts against the second matching hoop plate and the second connecting hoop plate respectively.

[0032] In the above-mentioned cap beam protection support device, before construction, the first clamp assembly and the second clamp assembly are spaced apart and arranged on the pier column, and the support assembly is supported between the first clamp assembly and the second clamp assembly, and the support assembly is controlled by the pressure regulating assembly to provide a certain pre-support force. During construction, as the construction load continues to increase, the controller can control the pressure regulating assembly to adjust the supporting force of the support assembly according to the current construction load and the detection data of the displacement detection assembly. When it is judged that the displacement of the first clamp assembly is greater than the displacement threshold, the pressure regulating assembly is controlled to control the supporting force of the support assembly according to the current construction load, thereby reducing or preventing the first clamp assembly from continuing to slide down, thereby improving construction safety. When it is judged that the supporting force provided by the current support assembly reaches the maximum value, an alarm is triggered to avoid continued pressurization that causes the second clamp assembly to slide down and cause a safety accident. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.

[0036] Figure 1 It is a schematic structural diagram of a cap beam protection support device in one embodiment during construction.

[0037] Figure 2 for Figure 1 Schematic diagram of the structure of the adjustment and detection mechanism.

[0038] Figure 3 for Figure 2 Schematic diagram of the structure of the support component.

[0039] Figure 4 for Figure 3 Side view of the pressure regulating assembly in FIG.

[0040] Figure 5 for Figure 1 Schematic diagram of the partial structure of the cap beam protection support device.

[0041] Figure 6 for Figure 5A front view of the cap beam protection support device is shown.

[0042] Figure 7 A cap beam construction prediction and adjustment method in one embodiment.

[0043] Description of reference numerals:

[0044] Cap beam protection support device 10; first clamp assembly 100; first matching hoop plate 110; first connecting hoop plate 120; second clamp assembly 200; second matching hoop plate 210; second connecting hoop plate 220; adjustment detection mechanism 300; support assembly 310; support cylinder 311; support piston 312; support member 313; support cavity 314; support elastic member 315; displacement detection assembly 320; magnetostrictive waveguide wire 321; magnetic element 322; signal monitor 323; pressure adjustment assembly 330; adjustment cylinder 331; detection piston 332; pressure control cavity 333; pressure adjustment cavity 334; matching part 335; guide part 336; construction platform 20. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0046] See also Figure 1 and Figure 2 , shows a cap beam protection support device 10 in an embodiment of the present application, which is used in cap beam construction and can timely detect and reduce the possibility of the construction platform 20 sliding down during construction in a predictive manner, thereby effectively improving the safety of construction.

[0047] Specifically, the cap beam protection support device 10 includes a first clamp assembly 100, a second clamp assembly 200, an adjustment detection mechanism 300 and a controller. The second clamp assembly 200 is arranged at an interval with the first clamp assembly 100, and the second clamp assembly 200 is located below the first clamp assembly 100. The adjustment detection mechanism 300 includes a support assembly 310, a displacement detection assembly 320 and a pressure adjustment assembly 330. The support assembly 310 is arranged between the first clamp assembly 100 and the second clamp assembly 200. The support assembly 310 is retractable between the first clamp assembly 100 and the second clamp assembly 200. The displacement detection assembly 320 is used to obtain the displacement of the support assembly 310, and the pressure adjustment assembly 330 is used to control the support force of the support assembly 310. The pressure adjustment assembly 330 and the displacement detection assembly 320 are both electrically connected to the controller, and the controller is used to control the pressure adjustment assembly 330 to adjust the support force of the support assembly 310 according to the detection data of the displacement detection assembly 320 and the current construction load.

[0048] Before construction, the first hoop assembly 100 and the second hoop assembly 200 are arranged on the pier column at intervals, and the support assembly 310 is supported between the first hoop assembly 100 and the second hoop assembly 200. The pressure regulating assembly 330 controls the support assembly 310 to provide a certain pre-support force. During construction, as the construction load continues to increase, the controller can control the pressure regulating assembly 330 to adjust the support force of the support assembly 310 according to the current construction load and the detection data of the displacement detection assembly 320. When it is judged that the displacement of the first hoop assembly 100 is greater than the displacement threshold, the pressure regulating assembly 330 is controlled to control the support force of the support assembly 310 according to the current construction load, reduce or prevent the first hoop assembly 100 from continuing to slide down, and improve construction safety. When it is judged that the support force provided by the current support assembly 310 reaches the maximum value, an alarm is triggered to avoid continued pressurization causing the second hoop assembly 200 to slide down and cause a safety accident.

[0049] See also Figure 3In one embodiment, the support assembly 310 includes a support cylinder 311, a support piston 312 and a support member 313. The support piston 312 is movably disposed in the support cylinder 311. The support cylinder 311 is disposed on the second clamp assembly 200. One end of the support member 313 is connected to the support piston 312, and the other end is abutted against the first clamp assembly 100. The distance between the support piston 312 and the inner bottom wall of the support cylinder 311 is less than or equal to the preset safety distance. The space formed between the support piston 312 and the inner bottom wall of the support cylinder 311 is the support cavity 314. The preset safety distance is the maximum distance that the first clamp assembly 100 can slide down, and is also the safe position node where the first clamp assembly 100 can slide down. The controller can control the pressure in the support cavity 314 and the position of the support piston 312 through the pressure regulating assembly 330, and then control the support force of the support member 313 on the first clamp assembly 100 and the position of the support member 313 supporting the first clamp assembly 100, thereby reducing or preventing the first clamp assembly 100 from sliding down to a preset safety distance. In other embodiments, the support assembly 310 can also be other support structures such as an adjustable electric push rod.

[0050] In one embodiment, the support assembly 310 further includes a support elastic member 315, which is disposed in the support cavity 314. The support elastic member 315 can provide elastic force for the support piston 312 toward the first clamp assembly 100. When the first clamp assembly 100 presses the support piston 312 and continuously moves close to the bottom wall of the support cavity 314, the rigid contact between the support piston 312 and the bottom wall of the support cavity 314 is avoided, and the support elastic member 315 also has a vibration absorption function, which can absorb construction vibration to a certain extent, thereby ensuring the overall reliability of the device.

[0051] In one embodiment, the pressure regulating assembly 330 includes a regulating cylinder 331 and a detection piston 332. The detection piston 332 is movably disposed in the regulating cylinder 331. The detection piston 332 divides the space in the regulating cylinder 331 into a pressure control chamber 333 and a pressure regulating chamber 334. The support chamber 314 is connected to the pressure regulating chamber 334. The displacement detection assembly 320 is used to detect the position of the detection piston 332 in the regulating cylinder 331. The controller is used to control the pressure in the pressure control chamber 333 according to the detection data of the displacement detection assembly 320, so as to control the position of the detection piston 332 in the regulating cylinder 331. By controlling the pressure in the pressure control chamber 333, the pressure applied to the pressure regulating chamber 334 by the detection piston 332 can be controlled. Since the support chamber 314 is connected to the pressure regulating chamber 334, the pressure and space size of the pressure regulating chamber 334 can be adjusted by adjusting the detection piston 332, so as to adjust the pressure in the support chamber 314 and the position of the support piston 312.

[0052] In one embodiment, there are multiple support assemblies 310, and the multiple support assemblies 310 are arranged at intervals around the axis of the first clamp assembly 100, and the support cavities 314 of the support cylinders 311 of the multiple support assemblies 310 are all connected to the pressure regulating cavity 334 of the regulating cylinder 331. Specifically, the support assemblies 310 are evenly arranged around the axis of the first clamp assembly 100. By providing multiple support assemblies 310, the reliability of supporting the first clamp assembly 100 can be improved, and the multiple support assemblies 310 can adjust the pressure and space size of the pressure regulating cavity 334 by adjusting the position of the detection piston 332, so as to achieve the purpose of synchronously adjusting the pressure in the support cavity 314 of all support assemblies 310 and the position of the support piston 312, and realize the synchronous control of multiple support assemblies 310 to ensure the consistency of the supporting force at each position.

[0053] See also Figure 4 In one embodiment, a matching portion 335 is provided on the detection piston 332, and a guide portion 336 is provided on the inner wall of the adjustment cylinder 331. The guide portion 336 guides and cooperates with the matching portion 335 to ensure the moving direction of the detection piston 332. In this embodiment, the guide portion 336 is a groove structure provided on the inner wall of the adjustment cylinder 331, and the matching portion 335 is a convex strip structure formed on the outer wall of the detection piston 332. The groove structure cooperates with the convex strip structure.

[0054] See also Figure 2 and Figure 4 In one embodiment, the displacement detection assembly 320 includes a magnetostrictive waveguide wire 321, a magnetic element 322, and a signal monitor 323. The magnetic element 322 is disposed on the detection piston 332, the magnetostrictive waveguide wire 321 is disposed on the adjustment cylinder 331, and the length direction of the magnetostrictive waveguide wire 321 is the moving direction of the detection piston 332 in the adjustment cylinder 331. The signal monitor 323 is electrically connected to the magnetostrictive waveguide wire 321, and the signal monitor 323 is used to detect the signal passing through the magnetostrictive waveguide wire 321. The magnetostrictive waveguide wire 321 can effectively sense the position of the magnetic element 322 on the detection piston 332, and the signal monitor 323 can effectively sense the change position of the magnetostrictive waveguide wire 321, thereby determining the position of the detection piston 332, so as to infer the downward position of the first clamp assembly 100.

[0055] Specifically, the magnetostrictive waveguide wire 321 is embedded in the side wall of the adjustment cylinder 331. Since the magnetic element 322 is not in direct contact with the magnetostrictive waveguide wire 321, by embedding the magnetostrictive waveguide wire 321 in the side wall of the adjustment cylinder 331, the magnetostrictive waveguide wire 321 can be prevented from being affected by the high pressure environment in the adjustment cylinder 331, thereby ensuring the reliability of displacement detection.

[0056] In this embodiment, the displacement detection component 320 indirectly obtains the displacement of the first clamp assembly 100 by directly obtaining the position of the detection piston 332. In other embodiments, the displacement detection component 320 can also be a displacement sensor of other forms, and can also directly obtain the displacement of the support piston 312 of the support assembly 310 or directly obtain the displacement of the first clamp assembly 100.

[0057] See also Figure 1 , Figure 2 , Figure 5 and Figure 6 In this embodiment, the first hoop assembly 100 includes a first matching hoop plate 110 and a first connecting hoop plate 120, and the first matching hoop plate 110 and the first connecting hoop plate 120 can be clasped on the pier and locked. The second hoop assembly 200 includes a second matching hoop plate 210 and a second connecting hoop plate 220, and the second matching hoop plate 210 and the second connecting hoop plate 220 can be clasped on the pier and locked. Among them, one side seam of the first matching hoop plate 110 and the first connecting hoop plate 120 is aligned with the second matching hoop plate 210, and the other side seam is aligned with the second connecting hoop plate 220. One end of at least two of the multiple support assemblies 310 abuts on the first matching hoop plate 110, and the other end abuts on the second matching hoop plate 210 and the second connecting hoop plate 220, respectively. One end of at least another two support assemblies 310 abuts on the first connecting hoop plate 120, and the other end abuts on the second matching hoop plate 210 and the second connecting hoop plate 220, respectively. By staggering the first clamp assembly 100 and the second clamp assembly 200, the uniformity of the force can be further improved, thereby improving the reliability of the cap beam protection support device 10 set on the pier.

[0058] In one embodiment, the cap beam protection support device 10 further includes an alarm, which is electrically connected to the controller. When it is determined that the current displacement of the detection piston 332 reaches a dangerous threshold, the alarm is triggered to sound an alarm.

[0059] See also Figure 1 , Figure 2 and Figure 7 In one embodiment, the present application further discloses a cap beam construction prediction and adjustment method, which can at least timely discover and handle the sliding problem of the first clamp assembly 100, thereby improving the construction safety of the cap beam. Specifically, the cap beam construction prediction and adjustment method includes:

[0060] S1: Obtain the current construction load and the current displacement of the detection piston 332 of the pressure regulating assembly 330 in the regulating cylinder 331 .

[0061] During the construction process, as the construction progresses, the construction load increases, and the construction load will be directly applied to the first clamp assembly 100, which may cause the first clamp assembly 100 to slide down, causing a safety accident. By obtaining the position of the detection piston 332, the position of the support piston 312 can be obtained, and then the current position of the first clamp assembly 100 can be calculated. Specifically, the method includes:

[0062] S11: Predict the changing trend of construction load based on historical construction load data and current construction load.

[0063] Based on the historical construction load data, the changing trend of the construction load over time can be analyzed, and any significant change points of the construction load can be identified. For example, the random forest method can be used to analyze the changing trend of the historical construction load data to form a load prediction model; the load prediction model and the current construction load data can be used to predict the future load change trend; as new construction load data is continuously collected, the parameters of the load prediction model are updated in real time to adapt to possible changes.

[0064] S12: predicting the displacement change trend of the detection piston 332 according to the predicted change trend of the construction load.

[0065] If no measures are taken, changes in the construction load may cause displacement of the first clamp assembly 100. Therefore, the predicted construction load can be used to predict the displacement change trend of the detection piston 332, and then the displacement of the first clamp assembly 100 can be predicted, so as to control the pressure of the regulating cylinder 331 of the pressure regulating assembly 330 according to the predicted result, and then realize the control and adjustment of the position of the detection piston 332, so as to achieve the purpose of adjusting the supporting force of the support assembly 310 and the position of the support piston 312, and prevent or improve the first clamp assembly 100 from continuing to move downward.

[0066] Specifically, according to the predicted construction load, a relationship model between the construction load F(t) and the predicted displacement x(t) of the detection piston 332 is established as follows: x(t)=k F (t)·F(t)+d, where k F (t) is the load influence coefficient, and d is the offset of the displacement of the detection piston 332.

[0067] Since the construction load is dynamically changing, the displacement of the detection piston 332 is predicted according to the dynamically changing construction load. Since the actual displacement of the detection piston 332, i.e., the actual displacement of the first clamp assembly 100, is not equal to the predicted displacement due to the regulation by the pressure regulating assembly 330, k needs to be corrected according to the current displacement actually detected and the current construction load F(t). F (t), the specific steps are as follows:

[0068] S121: Analyze the influence of the change of the current construction load F(t) on the current displacement of the detection piston 332, and update the load influence coefficient k F (t).

[0069] Specifically, the displacement is predicted using the current model, and the residual is calculated: c(t) = x(t) - k F (t―1)

[0070] ·F(t)

[0071] Using the recursive formula: Update load influence coefficient k F (t), where λ is a small positive number close to 0, which is used to ensure that the denominator is not zero and provide a smoothing effect.

[0072] S122: Verify the load influence coefficient k using the currently acquired construction load F(t) and current displacement data within a preset time period F (t), the load influence coefficient k is updated in a loop F (t) steps.

[0073] S2: Determine whether the current displacement of the detection piston 332 is greater than a displacement threshold;

[0074] S3: If yes, start pressurizing the pressure control chamber 333 of the regulating cylinder 331 , and control the pressurization amount of the pressure control chamber 333 according to the current construction load.

[0075] The displacement threshold may be the position where the displacement begins or is close to the position where the displacement occurs, that is, the position where the detection piston 332 begins to displace. When the displacement begins, the pressure in the pressure control chamber 333 of the regulating cylinder 331 may be adjusted to increase the supporting force of the supporting assembly 310 to prevent the first clamp assembly 100 from continuing to move downward or the displacement from increasing. The amount of pressurization may be controlled according to the predicted construction load. Specifically, the method further includes:

[0076] S31: adjusting the pressurization amount provided to the pressure control chamber 333 according to the displacement change trend predicted by the construction load.

[0077] Since changes in the construction load will cause changes in the displacement of the first clamp assembly 100, the pressurization amount provided to the pressure control chamber 333 is adjusted according to the displacement change trend predicted by the predicted construction load, so as to control the pressurization amount in advance and reduce or avoid the first clamp assembly 100 from continuing to move downward or aggravating its displacement.

[0078] In one embodiment, S311: predicting the displacement change rate of the detection piston 332 is:

[0079]

[0080] The pressurization amount provided to the pressure control chamber 333 is dynamically adjusted according to the displacement change rate: To adapt to the change of construction load F(t); where k x It is a proportional coefficient determined according to the system characteristics. It ensures that under changing construction load conditions, the pressurization amount is dynamically adjusted according to the predicted displacement change rate to ensure stable system operation.

[0081] In another embodiment, S312: Feedback the result of the displacement change trend analysis to the control system, using feedback control: The pressurization amount of the pressure control chamber 333 is controlled by closed-loop feedback, wherein P ref is the reference pressure, e(t) is the difference between the target displacement and the actual displacement, k p and k d is the control gain. Using an adaptive control strategy, the control gain parameters are dynamically adjusted based on real-time data to adapt to changing construction load conditions.

[0082] S4: Determine whether the current pressurization amount reaches the maximum pressurization amount;

[0083] S5: If yes, maintain the maximum pressurization and trigger an alarm, wherein the support force applied by the support assembly 310 under the maximum pressurization is less than or equal to the vertical friction force between the second clamp assembly 200 and the pier column.

[0084] During the pressurization process, when the pressurization reaches the maximum pressurization, if the pressurization continues, the thrust exerted by the support assembly 310 on the second clamp assembly 200 will be greater than the friction force of the second clamp assembly 200 on the pier column, and the support assembly 310 will push the second clamp assembly 200 downward, which will cause the first clamp assembly 100 and the second clamp assembly 200 to move downward synchronously, resulting in a construction safety accident. Therefore, when the pressurization reaches the maximum pressurization, maintaining the maximum pressurization and not continuing to pressurize can prevent the second clamp assembly 200 from moving downward, and the second clamp assembly 200 can play a certain safety protection role.

[0085] In this embodiment, the maximum pressurization amount may be the pressurization amount under the condition that the overall supporting force of the supporting assembly 310 is slightly smaller than the vertical friction force between the second clamp assembly 200 and the pier column.

[0086] S6: When it is determined that the current pressurization amount is less than the maximum pressurization amount, it is determined whether the current displacement of the detection piston 332 reaches a dangerous threshold;

[0087] S7: If yes, the pressurization amount provided to the pressure control chamber 333 is controlled to reach the maximum pressurization amount and maintained.

[0088] When the current pressurization amount has not reached the maximum pressurization amount, the displacement of the detection piston 332 is judged. When the current displacement of the detection piston 332 reaches the danger threshold, the pressurization amount needs to be controlled to reach the maximum pressurization amount and maintain it to reduce or prevent the first clamp assembly 100 from continuing to slide down.

[0089] Finally, an alarm threshold may be set. When it is determined that the current displacement of the detection piston 332 reaches the alarm threshold, it proves that the first clamp assembly 100 cannot continue to slide down, and danger may occur, and an alarm may be triggered at this time.

[0090] See also Figure 1 and Figure 2 In the above cap beam construction prediction and adjustment method, during construction, the support assembly 310 is arranged between the first clamp assembly 100 and the second clamp assembly 200. The support force of the support assembly 310 on the first clamp assembly 100 can be adjusted by controlling the position of the detection piston 332 of the pressure adjustment assembly 330 in the adjustment cylinder 331. The current displacement of the detection piston 332 of the pressure adjustment assembly 330 in the adjustment cylinder 331 is obtained. When it is judged that the current displacement of the detection piston 332 is greater than the displacement threshold, the pressure control chamber 333 of the adjustment cylinder 331 is started to be pressurized, and the pressure control chamber 333 is controlled according to the current construction load, so that the pressure provided to the support assembly 310 by the current adjustment cylinder 331 can adapt to the current construction load change, reduce or avoid the first clamp assembly 100 pressing the support assembly 310 to continue to move downward, and improve construction safety. When it is determined that the current pressurization reaches the maximum pressurization, an alarm is triggered. Under the maximum pressurization, the total support force provided by the support assembly 310 is less than the vertical friction between the second clamp assembly 200 and the pier column, so as to avoid the second clamp assembly 200 sliding down due to continued pressurization and causing a safety accident. The above method can timely detect the displacement of the first clamp assembly 100, and can adjust the support force according to the changing construction load, reduce or avoid further sliding, and realize the timely detection and processing of the sliding of the first clamp assembly 100, so as to avoid the occurrence of safety accidents caused by the instability and sliding of the entire construction platform 20.

[0091] It should be understood that although Figure 7 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 7At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0092] In one embodiment, the controller further includes an acquisition module, a start judgment module, a pressurization control module, a trigger judgment module, and an alarm module. The acquisition module is used to acquire the current construction load and the current displacement of the detection piston 332 of the pressure regulating assembly 330 in the regulating cylinder 331; the start judgment module is used to determine whether the current displacement of the detection piston 332 is greater than the displacement threshold; the pressurization control module is used to start the pressurization of the pressure control chamber 333 of the regulating cylinder 331 if yes, and control the pressurization amount provided to the pressure control chamber 333 according to the current construction load; the trigger judgment module is used to determine whether the current pressurization amount reaches the maximum pressurization amount; the alarm module is used to maintain the maximum pressurization amount and trigger an alarm if yes, wherein the pressure of the maximum pressurization amount is less than or equal to the vertical friction between the second clamp assembly 200 and the pier column.

[0093] For the specific definition of the controller, please refer to the definition of the cap beam construction prediction and adjustment method above, which will not be repeated here. Each module in the above controller can be implemented in whole or in part by software, hardware and their combination. The above modules can be embedded in or independent of the processor in the computer device in hardware form, or stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to the above modules.

[0094] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0095] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0096] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0097] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0098] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0099] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A cap beam construction prediction and adjustment method, characterized in that: The cap beam construction prediction and adjustment method is applied to a cap beam protection support device, the cap beam protection support device comprises a first clamp assembly, a second clamp assembly and an adjustment detection mechanism, the second clamp assembly is spaced apart from the first clamp assembly, and the second clamp assembly is located below the first clamp assembly; the adjustment detection mechanism comprises a support assembly, a displacement detection assembly and a pressure adjustment assembly, the number of the support assemblies is multiple, and the multiple support assemblies are spaced apart around the axis of the first clamp assembly between the first clamp assembly and the second clamp assembly, the support assembly comprises a support cylinder body, a support piston and a support member, the support piston is movably arranged in the support cylinder body, the support cylinder body is arranged on the second clamp assembly, one end of the support member is connected to the support piston, and the other end abuts against the first clamp assembly, the distance between the support piston and the inner bottom wall of the support cylinder body is less than or equal to a preset safety distance, and the space formed between the support piston and the inner bottom wall of the support cylinder body is a support cavity; The pressure regulating assembly comprises a regulating cylinder and a detection piston, wherein the detection piston is movably disposed in the regulating cylinder, and the detection piston divides the space in the regulating cylinder into a pressure control chamber and a pressure regulating chamber, and the support chambers of the plurality of support assemblies are all connected to the pressure regulating chamber; The displacement detection assembly is used to detect the position of the detection piston in the adjustment cylinder to obtain the displacement of the support assembly; The method comprises: Obtain the current construction load and the current displacement of the detection piston of the pressure regulating assembly in the regulating cylinder; Determine whether the current displacement of the detection piston is greater than a displacement threshold, where the displacement threshold is the position at which the detection piston starts to move; If yes, start pressurizing the pressure control chamber of the regulating cylinder, and control the pressurization amount of the pressure control chamber according to the current construction load; Determine whether the current pressurization amount reaches the maximum pressurization amount; If yes, the maximum pressurization is maintained and an alarm is triggered, wherein the support force applied by the support assembly under the maximum pressurization is less than or equal to the vertical friction force between the second clamp assembly and the pier column; If not, determining whether the current displacement of the detection piston reaches a danger threshold, wherein the danger threshold is the displacement of the detection piston corresponding to the first clamp assembly sliding down the preset safety distance; If so, the pressurization amount provided to the pressure control chamber is controlled to reach the maximum pressurization amount and maintained.

2. The cap beam construction prediction and adjustment method according to claim 1, characterized in that: The method comprises: Predict the changing trend of construction load based on historical construction load data and current construction load; Predicting a displacement change trend of the detection piston according to a predicted change trend of the construction load; The amount of pressurization provided to the pressure control chamber is adjusted according to the displacement variation trend.

3. The cap beam construction prediction and adjustment method according to claim 2 is characterized in that: The method of predicting the displacement change trend of the detection piston according to the predicted change trend of the construction load includes: According to the predicted construction load, the relationship model between the construction load F(t) and the predicted displacement x(t) of the detection piston is established as follows: x(t)=k F (t)·F(t)+d, where k F (t) is the load influence coefficient, and d is the offset of the detection piston displacement.

4. The cap beam construction prediction and adjustment method according to claim 3 is characterized in that: The method comprises: Analyze the influence of the change of the current construction load F(t) on the current displacement of the detection piston and update the load influence coefficient k F (t); The load influence coefficient k is verified using the data of the current construction load F(t) and the current displacement within the preset time period. F (t), the load influence coefficient k is updated in a loop F (t) steps.

5. The cap beam construction prediction and adjustment method according to claim 2, characterized in that: The step of adjusting the pressurization amount provided to the pressure control chamber according to the displacement change trend includes: The displacement change rate of the detection piston is predicted to be: The pressurization amount provided to the pressure control chamber is dynamically adjusted according to the displacement change rate as follows: To adapt to the change of construction load F(t); where k x It is a proportional coefficient determined according to the system characteristics.

6. A cap beam protection support device, characterized in that: The cap beam protection support device comprises: A first clamp assembly; A second clamp assembly, wherein the second clamp assembly is spaced apart from the first clamp assembly, and the second clamp assembly is located below the first clamp assembly; An adjustment detection mechanism, the adjustment detection mechanism includes a support assembly, a displacement detection assembly and a pressure adjustment assembly. The number of the support assemblies is multiple, and the multiple support assemblies are arranged between the first clamp assembly and the second clamp assembly at intervals around the axis of the first clamp assembly. The support assembly includes a support cylinder, a support piston and a support member. The support piston is movably arranged in the support cylinder, and the support cylinder is arranged on the second clamp assembly. One end of the support member is connected to the support piston, and the other end abuts against the first clamp assembly. The distance between the support piston and the inner bottom wall of the support cylinder is less than or equal to a preset safety distance, and the space formed between the support piston and the inner bottom wall of the support cylinder is a support cavity; the pressure adjustment assembly includes an adjustment cylinder and a detection piston, and the detection piston is movably arranged in the adjustment cylinder. The detection piston divides the space in the adjustment cylinder into a pressure control cavity and a pressure adjustment cavity. The support cavities of multiple support assemblies are all connected to the pressure adjustment cavity; the displacement detection assembly is used to detect the position of the detection piston in the adjustment cylinder to obtain the displacement of the support assembly; and A controller, wherein the pressure regulating component and the displacement detecting component are both electrically connected to the controller, and the controller is used to execute the cap beam construction prediction and regulation method as described in any one of claims 1-5.

7. The cap beam protection support device according to claim 6, characterized in that: The support assembly further includes a support elastic member, which is disposed in the support cavity and can provide an elastic force for the support piston toward the first clamp assembly.

8. The cap beam protection support device according to claim 6, characterized in that: The displacement detection component includes a magnetostrictive waveguide wire, a magnetic element and a signal monitor, wherein the magnetic element is arranged on the detection piston, the magnetostrictive waveguide wire is embedded in the adjustment cylinder, and the length direction of the magnetostrictive waveguide wire is the moving direction of the detection piston in the adjustment cylinder, and the signal monitor is electrically connected to the magnetostrictive waveguide wire, and the signal monitor is used to detect the signal passing through the magnetostrictive waveguide wire.

9. The cap beam protection support device according to any one of claims 6 to 8, characterized in that: The cap beam protection support device also includes an alarm, which is electrically connected to the controller. When it is determined that the current displacement of the detection piston reaches a dangerous threshold, the alarm is triggered to sound an alarm.

10. The cap beam protection support device according to any one of claims 6 to 8, characterized in that: The first hoop assembly includes a first matching hoop plate and a first connecting hoop plate, and the first matching hoop plate and the first connecting hoop plate can be matched and locked on the pier column; the second hoop assembly includes a second matching hoop plate and a second connecting hoop plate, and the second matching hoop plate and the second connecting hoop plate can be matched and locked on the pier column; Among them, a seam on one side of the first mating hoop plate and the first connecting hoop plate is aligned with the second mating hoop plate, and a seam on the other side is aligned with the second connecting hoop plate, one end of at least two of the multiple support assemblies abuts against the first mating hoop plate, and the other end abuts against the second mating hoop plate and the second connecting hoop plate respectively, and one end of at least another two of the support assemblies abuts against the first connecting hoop plate, and the other end abuts against the second mating hoop plate and the second connecting hoop plate respectively.

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