Bridge tensioning control method and device, electronic equipment and storage medium

Abstract

This invention provides a bridge tensioning control method, device, electronic equipment, and storage medium. The method includes: determining whether the current tensioning process is the first tensioning process; if so, performing a first-stage synchronous tensioning operation according to a tensioning method that synchronizes elongation; acquiring the elongation deviation and force deviation between the tensioning jacks at both ends of the steel strand; determining a first target tensioning method based on the elongation deviation and force deviation, and performing a next-stage synchronous tensioning operation based on the first target tensioning method; jumping back to the step of "acquiring the elongation deviation and force deviation between the tensioning jacks at both ends of the steel strand," and continuing with subsequent steps to complete the first tensioning process. This invention can avoid the problem of lateral deflection of the bridge.

Description

Technical Field

[0001] This invention relates to the field of automation control technology, and in particular to a bridge tensioning control method, device, electronic equipment, and storage medium. Background Technology

[0002] Bridge tensioning primarily involves prestressing the steel strands inside the bridge. This prestressing causes deformation in the bridge structure, creating a prestressed structure to withstand loads. These loads include, but are not limited to, the bridge's own weight, wind loads, snow loads, and seismic loads.

[0003] Common bridge tensioning methods include 100% tensioning and inverted tensioning. 100% tensioning involves initially applying 10% of the force, then 20%, and finally tensioning to 100% in a single operation. 100% tensioning is suitable for shorter bridges. However, in most cases, the bridge is too long, and the tensioning jack is insufficient to tension to 100% in one go. In such cases, inverted tensioning is required. The process of inverted tensioning is similar to 100% tensioning, except that when the tensioning jack reaches its maximum elongation, the current force value is recorded, the jack is withdrawn, and then the next tensioning cycle begins. At the start of the next tensioning cycle, the tension is first applied to the previously recorded force value, i.e., the initial inverted force. The tensioning process continues, and after several inverted tensioning cycles, the final tension to 100% is achieved.

[0004] During bridge tensioning, synchronized force values ​​at both ends are required. If the force values ​​deviate too much, lateral deflection of the bridge can occur. In related technologies, when tensioning the steel strands at both ends, it is generally assumed that if the elongation of the jacks at both ends is the same, the force values ​​at both ends will also be the same. That is, the jacks at both ends are controlled synchronously based on the elongation. However, in reality, errors during beam casting can lead to inconsistent friction between the pipes at both ends of the beam. Additionally, there may be entanglement of the steel strands, resulting in different force values ​​even if the elongation of the jacks at both ends is the same. In other words, the method of synchronously controlling tensioning based on elongation in related technologies can easily lead to lateral deflection of the bridge. Summary of the Invention

[0005] This invention provides a bridge tensioning control method, device, electronic device, and storage medium to solve the problem of lateral deflection of bridges that easily occurs during bridge tensioning in related technologies.

[0006] In a first aspect, embodiments of the present invention provide a bridge tension control method, comprising:

[0007] Determine whether the current tensioning process is the first tensioning process;

[0008] If the current tensioning process is the first tensioning process, then the first stage of synchronous tensioning operation is performed according to the tensioning method of synchronous elongation.

[0009] Obtain the elongation deviation and force deviation between the tension jacks at both ends of the steel strand;

[0010] Based on the elongation deviation and the force deviation, a first target tensioning method is determined, and the next stage of synchronous tensioning operation is performed based on the first target tensioning method.

[0011] Jump to the step of "obtaining the elongation deviation and force deviation between the tension jacks at both ends of the steel strand" and continue to execute the subsequent steps to complete the first tensioning process.

[0012] In one possible implementation, the method for determining the first target tension based on the elongation deviation and the force deviation includes:

[0013] Detect whether the elongation deviation is greater than a first preset value;

[0014] When the elongation deviation is greater than the first preset value, the tensioning method that synchronizes the elongation is determined as the first target tensioning method;

[0015] When the elongation deviation is less than or equal to the first preset value, it is detected whether the force deviation is greater than the second preset value;

[0016] When the force value deviation is greater than the second preset value, the tensioning method with synchronized force value is determined as the first target tensioning method.

[0017] In one possible implementation, after detecting whether the force deviation is greater than a second preset value, the method further includes:

[0018] When the force deviation is less than or equal to the second preset value, the tensioning method that synchronizes the elongation is determined as the first target tensioning method.

[0019] In one possible implementation, the method further includes:

[0020] During synchronous tensioning, the elongation of the tensioning jacks at both ends of the steel strand is monitored in real time to see if it reaches the maximum elongation.

[0021] When the elongation of the tension jack at either end of the steel strand reaches the maximum elongation, the current force value of each tension jack is obtained and determined as the initial force for jacking; the tension jacks at both ends of the steel strand are then retracted to their initial positions to prepare for the next tensioning process.

[0022] In one possible implementation, after determining whether the current tensioning process is the first tensioning process, the method further includes:

[0023] If the current tensioning process is not the first tensioning process, the tensioning jacks at both ends of the steel strand are tensioned synchronously until the initial inverted force is reached, and the current stage of the tensioning process is determined based on the initial inverted force.

[0024] If the current tensioning process is in the first stage, then the synchronous tensioning operation of the current stage will continue to be executed in accordance with the tensioning method of synchronous inverted elongation, and the next stage will be updated to the current stage;

[0025] If the current tensioning process is not in the first stage, the deviation between the inverted elongation of the tensioning jacks at both ends of the steel strand and the force deviation are obtained; the inverted elongation is the difference between the current elongation and the elongation corresponding to the initial inverted force.

[0026] Based on the deviation between the inverted elongation and the force deviation, a second target tensioning method is determined, and the synchronous tensioning operation of the current stage is performed based on the second target tensioning method, and the next stage is determined as the current stage;

[0027] Jump to the step of "obtaining the deviation between the inverted elongation of the tension jacks at both ends of the steel strand and the force deviation", and continue to execute the subsequent steps to complete the current tensioning process.

[0028] In one possible implementation, the tensioning jacks at both ends of the steel strand are tensioned simultaneously, including:

[0029] The tensioning jacks at both ends of the steel strand are tensioned synchronously using a synchronous tensioning method.

[0030] In one possible implementation, the method for determining the second target tension based on the deviation between the inverted elongation and the force deviation includes:

[0031] Detect whether the deviation between the inverted elongation amounts is greater than a first preset value;

[0032] When the deviation between the inverted elongation amounts is greater than the first preset value, the tensioning method that synchronizes the inverted elongation amounts is determined as the second target tensioning method;

[0033] When the deviation between the inverted elongation amounts is less than or equal to the first preset value, it is detected whether the force value deviation is greater than the second preset value.

[0034] When the force value deviation is greater than the second preset value, the tensioning method with synchronized force value is determined as the second target tensioning method.

[0035] Secondly, embodiments of the present invention provide a bridge tensioning control device, comprising:

[0036] The determination module is used to determine whether the current tensioning process is the first tensioning process;

[0037] The tensioning module is used to perform the first stage of synchronous tensioning operation according to the tensioning method of synchronous elongation if the current tensioning process is the first tensioning process.

[0038] The tensioning module is also used to obtain the elongation deviation and force deviation between the tensioning jacks at both ends of the steel strand;

[0039] The tensioning module is also used to determine a first target tensioning method based on the elongation deviation and the force deviation, and to perform the next stage of synchronous tensioning operation based on the first target tensioning method.

[0040] The tensioning module is also used to jump to execute the step of "obtaining the elongation deviation and force deviation between the tensioning jacks at both ends of the steel strand" and continue to execute subsequent steps to complete the first tensioning process.

[0041] Thirdly, embodiments of the present invention provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method as described in the first aspect or any possible implementation of the first aspect.

[0042] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the method as described in the first aspect or any possible implementation thereof.

[0043] This invention provides a bridge tensioning control method, device, electronic equipment, and storage medium. The method performs a first-stage synchronous tensioning operation by synchronizing elongation, and determines a first target tensioning method based on the elongation and force deviations at both ends of the steel strands to execute the next stage of synchronous tensioning. By considering the force deviation in determining the first target tensioning method, large force deviations can be effectively avoided, thus preventing lateral deflection of the bridge. Furthermore, this invention also considers elongation deviation in determining the first target tensioning method to avoid excessive elongation deviation. By comprehensively considering both elongation and force deviations to determine the first target tensioning method for synchronous tensioning, both lateral deflection and frequent retraction of the bridge can be avoided, improving tensioning efficiency. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is an application scenario diagram of the bridge tension control method provided in an embodiment of the present invention;

[0046] Figure 2 This is a flowchart illustrating the implementation of a bridge tension control method according to an embodiment of the present invention;

[0047] Figure 3 This is a flowchart illustrating the implementation of a method for determining a first target tensioning according to an embodiment of the present invention;

[0048] Figure 4 This is a flowchart illustrating the implementation of a bridge tension control method according to another embodiment of the present invention;

[0049] Figure 5 This is a flowchart illustrating the implementation of a bridge tension control method according to another embodiment of the present invention;

[0050] Figure 6 This is a schematic diagram of the bridge tensioning control device provided in an embodiment of the present invention;

[0051] Figure 7 This is a schematic diagram of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0052] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0053] The inventors have discovered that synchronized force values ​​at both ends are necessary during bridge tensioning. Existing technology controls the jacks at both ends of the steel strand by synchronously controlling the elongation. However, in reality, errors during beam casting lead to inconsistent friction between the pipes at both ends of the beam. Furthermore, the steel strands may become entangled, resulting in different force values ​​at both ends even if the elongation of the jacks is the same. Therefore, existing bridge tensioning techniques are prone to causing lateral deflection of the bridge.

[0054] To reduce lateral deflection of the bridge during tensioning, this application's embodiments, after completing the first stage of synchronous tensioning, determine the first target tensioning method for the next stage based on elongation deviation and force deviation, and then execute the next stage of synchronous tensioning. Specifically, by considering force deviation in determining the first target tensioning method, large force deviations can be effectively avoided, thereby preventing lateral deflection of the bridge. Furthermore, this embodiment also considers elongation deviation in determining the first target tensioning method to avoid excessive elongation deviation.

[0055] To make the objectives, technical solutions, and advantages of the present invention clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

[0056] First refer to Figure 1 , Figure 1 The illustration schematically depicts an application scenario provided by an embodiment of this application. During bridge tensioning, tensioning jacks are connected to both ends of the steel strands in the bridge structure. A prestressed intelligent tensioning device is communicatively connected to each tensioning jack to control the jacks in performing synchronous tensioning operations. By controlling the tensioning jacks at both ends of the steel strands to perform synchronous tensioning operations, the prestressed intelligent tensioning device enables the bridge structure to form a prestressed structure to withstand various loads. The executing entity in this embodiment of the invention can be a prestressed intelligent tensioning device.

[0057] Figure 2 The implementation flowchart of the bridge tension control method provided in the embodiment of the present invention is described in detail below:

[0058] Step 201: Determine whether the current tensioning process is the first tensioning process.

[0059] This application takes into account that bridges are often long, requiring the use of inverted tensioning. When using inverted tensioning, multiple uncoupling operations are necessary, resulting in multiple tensioning processes to complete the bridge tensioning. Therefore, in controlling bridge tensioning, this embodiment of the invention first determines whether the current tensioning process is the first tensioning operation, and then determines the subsequent steps.

[0060] Step 202: If the current tensioning process is the first tensioning process, then perform the first stage of synchronous tensioning operation according to the tensioning method of synchronous elongation.

[0061] Whether using 100% tensioning or inverted tensioning, the synchronous tensioning operation is typically divided into three stages. The first stage involves tensioning to 10% of the preset prestress. The second stage involves tensioning to 20% of the preset prestress. The third stage involves tensioning to the preset prestress, completing the bridge tensioning process.

[0062] Bridge tensioning requires synchronous tensioning. This means that when either tensioning jack reaches its maximum elongation, both jacks must be unloaded simultaneously before synchronous tensioning can begin again. If the deviation in elongation between the tensioning jacks at both ends of the steel strand is significant—for example, one jack reaching maximum elongation while the other is still relatively small—then both jacks must be unloaded simultaneously, and a new tensioning cycle must begin. In other words, a large deviation in elongation between the tensioning jacks at both ends of the steel strand can lead to frequent unloading, resulting in an excessive number of tensioning cycles and impacting tensioning efficiency.

[0063] In this embodiment of the invention, during the initial tensioning process, a first-stage synchronous tensioning operation is performed using a tensioning method that synchronizes elongation. This keeps the deviation between the elongations of the tensioning jacks at both ends of the steel strand within a small range, thus avoiding frequent jack withdrawal and improving tensioning efficiency. Here, "synchronized elongation" refers to controlling the tensioning operation of each tensioning jack based on the synchronized elongation of the tensioning jacks at both ends of the steel strand.

[0064] Step 203: Obtain the elongation deviation and force deviation between the tension jacks at both ends of the steel strand.

[0065] Elongation deviation refers to the deviation in elongation between the tension jacks at both ends of the steel strand. Force deviation refers to the deviation in force between the tension jacks at both ends of the steel strand.

[0066] In this embodiment of the invention, after completing the first stage of synchronous tensioning, the elongation deviation and force deviation between the tensioning jacks at both ends of the steel strand are obtained respectively, so as to determine the tensioning method for the next stage based on the elongation deviation and force deviation.

[0067] Step 204: Based on the elongation deviation and force deviation, determine the first target tensioning method, and perform the next stage of synchronous tensioning operation based on the first target tensioning method.

[0068] During bridge tensioning, errors in the beam casting process can lead to different frictional resistances at both ends of the beam. This results in different force values ​​for the tensioning jacks at both ends of the steel strand, even if the elongation is the same. A large deviation in force values ​​between the tensioning jacks at both ends can easily cause lateral deflection of the bridge.

[0069] In this embodiment of the invention, after completing the first stage of synchronous tensioning, a first target tensioning method is determined based on elongation deviation and force deviation to execute the second stage of synchronous tensioning. By considering force deviation during the determination of the first target tensioning method, this embodiment of the invention can effectively avoid situations where the force deviation is large, thereby preventing lateral deflection of the bridge.

[0070] In addition, different tensioning jacks typically have different tensioning states. This means that even if the force values ​​of the jacks at both ends of the steel strand are the same, the elongation will be different. When the elongation deviation is large, the jacks will be frequently withdrawn, increasing the number of tensioning cycles and thus affecting the tensioning efficiency.

[0071] Therefore, in determining the first target tensioning method, this embodiment of the invention also considers the elongation deviation to avoid excessive elongation deviation. By comprehensively considering the elongation deviation and the force deviation, the first target tensioning method is determined to perform synchronous tensioning operations. This avoids both lateral deflection of the bridge and frequent jacking issues, thus improving tensioning efficiency.

[0072] Step 205: Jump to the step of "obtaining the elongation deviation and force deviation between the tension jacks at both ends of the steel strand" and continue to execute the subsequent steps to complete the first tensioning process.

[0073] After the second stage of synchronous tensioning is completed, the elongation deviation and force deviation between the tensioning jacks at both ends of the steel strand are reacquired. Based on the new elongation deviation and the new force deviation, a new first target tensioning method is determined to execute the third stage of synchronous tensioning, thereby completing the bridge tensioning.

[0074] Compared to existing technologies, this invention performs the first stage of synchronous tensioning by simultaneously adjusting the elongation. Based on the elongation and force deviations at both ends of the steel strand, a first target tensioning method is determined to execute the next stage of synchronous tensioning. In determining the first target tensioning method, considering the force deviation effectively avoids large force deviations, thus preventing lateral deflection of the bridge. Furthermore, this invention also considers elongation deviations in determining the first target tensioning method to avoid excessive elongation deviations. By comprehensively considering both elongation and force deviations to determine the first target tensioning method for synchronous tensioning, both lateral deflection and frequent retraction of the bridge can be avoided, improving tensioning efficiency.

[0075] In some embodiments, see Figure 3 The above method for determining the first target tension based on elongation deviation and force deviation may include:

[0076] Step 301: Detect whether the elongation deviation is greater than the first preset value.

[0077] The first preset value can be determined based on the actual tensioning situation, and this embodiment of the invention does not impose a specific limitation on it. For example, the first preset value can be 50 mm.

[0078] Step 302: When the elongation deviation is greater than the first preset value, the tensioning method that synchronizes the elongation is determined as the first target tensioning method.

[0079] When the elongation deviation exceeds the first preset value, i.e., the elongation deviation is too large, the tensioning method that synchronizes elongation is determined as the first target tensioning method, and the synchronous tensioning operation of the current stage is executed. Executing the synchronous tensioning operation of the current stage according to the elongation synchronization method can prevent the elongation deviation from expanding further, thereby limiting the elongation deviation to a smaller numerical range, avoiding frequent uncoupling, and improving tensioning efficiency.

[0080] Step 303: When the elongation deviation is less than or equal to the first preset value, detect whether the force deviation is greater than the second preset value.

[0081] Step 304: When the force value deviation is greater than the second preset value, the tensioning method with synchronized force value is determined as the first target tensioning method.

[0082] The second preset value can be determined based on the actual tensioning situation, and this embodiment of the invention does not specifically limit it. For example, the second preset value can be 15% of the current force value of the tensioning jack. Here, force synchronization refers to controlling the tensioning jacks to perform tensioning operations based on the synchronized force values ​​of the tensioning jacks at both ends of the steel strand.

[0083] In this embodiment of the invention, when the elongation deviation is small, the force deviation is further detected. If the force deviation is large, the next stage of synchronous tensioning is performed according to the force synchronization tensioning method, thereby limiting the force deviation to a small numerical range to avoid the problem of lateral deflection of the bridge.

[0084] In some embodiments, see Figure 3 Following step 303 above, the following may also be included:

[0085] Step 305: When the force deviation is less than or equal to the second preset value, the tensioning method with synchronized elongation is determined as the first target tensioning method.

[0086] If the force deviation is less than or equal to the second preset value, that is, there will be no problem of lateral deflection of the bridge, then the next stage of synchronous tensioning operation will be carried out according to the tensioning method of synchronous elongation, thereby limiting the elongation deviation to a small range and improving tensioning efficiency.

[0087] This invention determines the tensioning method for the next stage based on the elongation and force deviations from the previous stage, maintaining both synchronous elongation and synchronous force. Furthermore, by detecting the elongation deviation first and then the force deviation, it maximizes elongation synchronization while ensuring the bridge does not deflect laterally, thereby reducing the number of uncoupling operations and improving tensioning efficiency.

[0088] In some embodiments, the bridge tension control method described above further includes:

[0089] During synchronous tensioning, the elongation of the tensioning jacks at both ends of the steel strand is monitored in real time to ensure that the elongation reaches the maximum.

[0090] When the elongation of the tension jack at either end of the steel strand reaches its maximum elongation, the current force value of each tension jack is obtained and determined as the initial force for jacking; the tension jacks at both ends of the steel strand are then retracted to their initial positions in order to execute the next tensioning process.

[0091] The bridge tensioning process requires synchronous tensioning. That is, when the tensioning jack at any end reaches its maximum elongation and needs to be unloaded, all tensioning jacks must be unloaded simultaneously, exiting the current tensioning cycle, and then a new tensioning cycle can be started synchronously again.

[0092] In this embodiment of the invention, during the synchronous tensioning operation at different stages, the elongation of each tensioning jack is monitored in real time to determine whether it has reached its maximum elongation. When any tensioning jack reaches its maximum elongation, the current force value of all tensioning jacks, i.e., the initial force, is recorded and saved. Then, each tensioning jack is retracted to its initial position, ending the current tensioning cycle and starting the next tensioning cycle.

[0093] In some embodiments, see Figure 4 After determining whether the current tensioning process is the first tensioning process, the following steps are also included:

[0094] Step 401: If the current tensioning process is not the first tensioning process, then the tensioning jacks at both ends of the steel strand are tensioned synchronously until the initial inverted force is reached, and the stage of the current tensioning process is determined based on the initial inverted force.

[0095] As mentioned above, the inverted tensioning mainly includes three stages. The first stage is tensioning to 10% of the preset prestress. The second stage is tensioning to 20% of the preset prestress. The third stage is tensioning to 100% of the preset prestress. When each tensioning jack is re-tensioned to the initial inverted force, the current stage of the tensioning process can be redefined based on the initial inverted force.

[0096] In some embodiments, the tensioning jacks at both ends of the steel strand are simultaneously tensioned, including:

[0097] The tensioning jacks at both ends of the steel strand are tensioned synchronously using a synchronous tensioning method.

[0098] In this embodiment of the invention, during the process of tensioning each tensioning jack to the initial tilting force, considering the varying tension of each jack, if a tensioning method with synchronized elongation is used, excessive force deviation may occur before reaching the initial tilting force. As mentioned above, excessive force deviation can easily cause lateral deflection of the bridge. Therefore, this embodiment of the invention employs a tensioning method with synchronized force to simultaneously tension each tensioning jack to the initial tilting force.

[0099] Step 402: If the current tensioning process is in the first stage, then continue to perform the synchronous tensioning operation of the current stage according to the tensioning method of synchronous inverted elongation, and update the next stage to the current stage.

[0100] When the initial inverted force is less than 10% of the preset prestress, the first stage of synchronous tensioning continues. The first stage of tensioning is carried out according to the tensioning method of synchronous inverted elongation. Here, synchronous inverted elongation means that the tensioning jacks at both ends of the steel strand are controlled to perform the tensioning operation based on the synchronous control of the inverted elongation.

[0101] Step 403: If the current tensioning process is not in the first stage, obtain the deviation between the inverted elongation of the tensioning jacks at both ends of the steel strand and the force deviation. The inverted elongation is the difference between the current elongation and the elongation corresponding to the initial inverted force.

[0102] If the current stage is not in the first stage, the difference between the current elongation of each tensioning jack and the elongation corresponding to its initial inverting force is obtained, that is, the inverting elongation of each tensioning jack, and then the deviation between the inverting elongations is determined.

[0103] Step 404: Based on the deviation between the inverted elongation and the force deviation, determine the second target tensioning method, perform the synchronous tensioning operation of the current stage based on the second target tensioning method, and determine the next stage as the current stage.

[0104] When the initial invert force is greater than or equal to 10% of the preset prestress but less than 20% of the preset prestress, the second stage of synchronous tensioning continues. Based on the deviations in invert elongation and force values, the tensioning method for the second stage is redefined. After the second stage of tensioning is completed, the third stage is designated as the current stage.

[0105] When the initial inverted force is greater than or equal to 20% of the preset prestress but less than 100% of the preset prestress, the third stage of synchronous tensioning operation continues, and the tensioning method of the third stage is re-determined based on the deviation between the inverted elongation and the force value deviation.

[0106] Step 405: Jump to the step of "obtaining the deviation between the inverted elongation of the tension jacks at both ends of the steel strand and the force deviation", and continue to execute the subsequent steps to complete the current tensioning process.

[0107] After completing the synchronous tensioning operation of the current stage, the current stage is updated to the next stage. The deviations in elongation and force values ​​between the tensioning jacks at both ends of the steel strand are then re-acquired. Based on these deviations, the tensioning method for the current stage is redefined until any tensioning jack reaches its maximum elongation. At this point, the current tensioning process ends, and a jack withdrawal operation is performed to begin the next tensioning process. Alternatively, the bridge tensioning process can continue until 100% of the preset prestress is reached.

[0108] In some embodiments, determining the second target tensioning method based on the deviation between the inverted elongation and the force deviation may include:

[0109] Check whether the deviation between the inverted elongation and the previous value is greater than the first preset value.

[0110] When the deviation between the inverted elongation and the top elongation is greater than the first preset value, the tensioning method that synchronizes the inverted elongation is determined as the second target tensioning method.

[0111] When the deviation between the inverted elongation is less than or equal to the first preset value, the detection force deviation is checked to see if it is greater than the second preset value.

[0112] When the force deviation is greater than the second preset value, the tensioning method with synchronized force is determined as the second target tensioning method.

[0113] In some embodiments, after detecting whether the force deviation is greater than a second preset value, the method further includes:

[0114] When the force deviation is less than or equal to the second preset value, the tensioning method that synchronizes the inverted elongation is determined as the second target tensioning method.

[0115] In essence, the principle for determining the second target tensioning method is the same as that for determining the first target tensioning method. The only difference is that, in determining the second target tensioning method, this embodiment of the invention considers the deviation between the inverted elongation of each tensioning jack. Accordingly, this embodiment of the invention determines the tensioning method with synchronized inverted elongation as the second target tensioning method when the deviation between the inverted elongation is greater than a first preset value and the force deviation is less than or equal to a second preset value. Here, synchronized inverted elongation refers to controlling each tensioning jack to perform tensioning operations based on the synchronized inverted elongation of each tensioning jack.

[0116] Due to factors such as pipe friction and steel strand entanglement, the elongation of each tensioning jack already deviates to some extent when tensioning reaches the initial inverted force. This embodiment of the invention, through a tensioning method that synchronizes the inverted elongation, ensures that the increased elongation of each tensioning jack remains consistent throughout the subsequent tensioning stages, thereby preventing further increases in the elongation deviation of each tensioning jack.

[0117] To facilitate understanding, embodiments of the present invention also provide Figure 5 This systematically explains the complete process of the bridge tension control method. See details below. Figure 5 During the initial tensioning process, the tensioning is performed sequentially at 10%, 20%, and 100% stages, following the normal tensioning procedure. During the 10% stage, tensioning is conducted synchronously with the elongation, and the elongation of the tensioning jack is monitored in real-time to ensure it reaches its maximum. Upon reaching the maximum elongation, the current force value of the tensioning jack is recorded, and the jack is retracted to its initial position, thus ending the current tensioning process and restarting the next tensioning cycle.

[0118] After the tensioning jacks reach 10% of the preset prestress, the elongation deviation and force deviation of the tensioning jacks are checked sequentially to determine the tensioning method used in the 20% stage of tensioning. Similarly, during the 20% stage of tensioning, the elongation of the tensioning jacks is monitored in real time to ensure that the maximum elongation has been reached. When the maximum elongation is reached, the current force value of the tensioning jacks is recorded, and the jacks are retracted to the initial position to end the current tensioning process and restart the next tensioning process.

[0119] Similarly, after the tensioning jacks reach 20% of the preset prestress, the elongation deviation and force deviation of the tensioning jacks are checked sequentially to determine the tensioning method used in the 100% stage tensioning process. During the 100% stage tensioning process, the elongation of the tensioning jacks is monitored in real time to ensure that the maximum elongation has been reached. When the maximum elongation is reached, the current force value of the tensioning jacks is recorded, and the jacks are retracted to the initial position to end the current tensioning process and restart the next tensioning process.

[0120] If the current tensioning process is not the first tensioning process, then tensioning is carried out according to the inverted top tensioning process. When tensioning according to the inverted top tensioning process, tensioning is first performed synchronously with the initial inverted top force. Then, based on the initial inverted top force, the current stage of the tensioning process is determined, and the tensioning operation for that stage continues. Specifically, during the first stage of tensioning, the inverted top elongation is synchronized. During the second and third stages of tensioning, the tensioning method is determined based on the deviation between the inverted top elongation and the force deviation, until 100% prestressing tension is achieved. Afterward, pressure holding and unloading operations are performed to complete the bridge tensioning.

[0121] In the tensioning process after uncoupling, this invention employs a synchronized force tensioning method to tension each jack to the initial uncoupling force, preventing excessive deviations in elongation between the tensioning jacks. Furthermore, the subsequent tensioning method is determined by the deviations in uncoupling elongation and force values. When the deviation in uncoupling elongation exceeds a first preset value, or when the force deviation is less than or equal to a second preset value, a synchronized uncoupling elongation method is used to perform subsequent synchronous tensioning operations. This ensures that the elongation increase of each tensioning jack remains consistent in subsequent tensioning stages, preventing further increases in the elongation deviation between the jacks. By controlling the elongation deviation between the tensioning jacks, the number of uncoupling operations can be effectively reduced, improving tensioning efficiency.

[0122] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0123] The following are device embodiments of the present invention. For details not described in detail, please refer to the corresponding method embodiments described above.

[0124] Figure 6 A schematic diagram of the bridge tensioning control device provided in an embodiment of the present invention is shown. For ease of explanation, only the parts related to the embodiment of the present invention are shown, and are described in detail below:

[0125] like Figure 6 As shown, the bridge tensioning control device 5 includes a determination module 61 and a tensioning module 62.

[0126] Module 61 is used to determine whether the current tensioning process is the first tensioning process;

[0127] Tensioning module 62 is used to perform the first stage of synchronous tensioning operation according to the tensioning method of synchronous elongation if the current tensioning process is the first tensioning process.

[0128] The tensioning module 62 is also used to obtain the elongation deviation and force deviation between the tensioning jacks at both ends of the steel strand;

[0129] The tensioning module 62 is also used to determine the first target tensioning method based on the elongation deviation and the force deviation, and to perform the next stage of synchronous tensioning operation based on the first target tensioning method;

[0130] The tensioning module 62 is also used to jump to execute the step of "obtaining the elongation deviation and force deviation between the tensioning jacks at both ends of the steel strand" and continue to execute subsequent steps to complete the first tensioning process.

[0131] In one possible implementation, the tensioning module 62 is specifically used for:

[0132] Check whether the elongation deviation is greater than the first preset value;

[0133] When the elongation deviation is greater than the first preset value, the tensioning method that synchronizes the elongation is determined as the first target tensioning method;

[0134] When the elongation deviation is less than or equal to the first preset value, check whether the force deviation is greater than the second preset value;

[0135] When the force deviation is greater than the second preset value, the tensioning method with synchronized force is determined as the first target tensioning method.

[0136] In one possible implementation, the tensioning module 62 is specifically used for:

[0137] When the force deviation is less than or equal to the second preset value, the tensioning method that synchronizes the elongation is determined as the first target tensioning method.

[0138] In one possible implementation, the tensioning module 62 is also used for:

[0139] During synchronous tensioning, the elongation of the tensioning jacks at both ends of the steel strand is monitored in real time to see if it reaches the maximum elongation.

[0140] When the elongation of the tension jack at either end of the steel strand reaches its maximum elongation, the current force value of each tension jack is obtained and determined as the initial force for jacking; the tension jacks at both ends of the steel strand are then retracted to their initial positions in order to execute the next tensioning process.

[0141] In one possible implementation, the tensioning module 62 is also used for:

[0142] If the current tensioning process is not the first tensioning process, the tensioning jacks at both ends of the steel strand are tensioned synchronously until the initial inverted force is reached, and the current stage of the tensioning process is determined based on the initial inverted force.

[0143] If the current tensioning process is in the first stage, then the synchronous tensioning operation of the current stage will continue to be executed in accordance with the tensioning method of synchronous inverted elongation, and the next stage will be updated to the current stage;

[0144] If the current tensioning process is not in the first stage, then obtain the deviation between the back extension of the tensioning jacks at both ends of the steel strand and the force deviation; the back extension is the difference between the current extension and the extension corresponding to the initial back force.

[0145] Based on the deviation between the inverted elongation and the force deviation, the second target tensioning method is determined, the synchronous tensioning operation of the current stage is performed based on the second target tensioning method, and the next stage is determined as the current stage;

[0146] Jump to the step of "obtaining the deviation between the inverted elongation of the tension jacks at both ends of the steel strand and the force deviation", and continue to execute the subsequent steps to complete the current tensioning process.

[0147] In one possible implementation, the tensioning module 62 is specifically used for:

[0148] The tensioning jacks at both ends of the steel strand are tensioned synchronously using a synchronous tensioning method.

[0149] In one possible implementation, the tensioning module 62 is specifically used for:

[0150] Check whether the deviation between the inverted elongation and the first preset value is greater than the first preset value;

[0151] When the deviation between the inverted elongation and the inverted elongation is greater than the first preset value, the tensioning method that synchronizes the inverted elongation is determined as the second target tensioning method.

[0152] When the deviation between the inverted elongation is less than or equal to the first preset value, check whether the force deviation is greater than the second preset value.

[0153] When the force deviation is greater than the second preset value, the tensioning method with synchronized force is determined as the second target tensioning method.

[0154] This invention embodiment performs the first stage of synchronous tensioning by synchronizing elongation. Based on the elongation and force deviations at both ends of the steel strand, a first target tensioning method is determined to execute the next stage of synchronous tensioning. In determining the first target tensioning method, considering the force deviation effectively avoids large force deviations, thus preventing lateral deflection of the bridge. Furthermore, this invention embodiment also considers elongation deviation in determining the first target tensioning method to avoid excessive elongation deviation. By comprehensively considering both elongation and force deviations to determine the first target tensioning method for synchronous tensioning, both lateral deflection of the bridge and frequent retraction are avoided, improving tensioning efficiency.

[0155] Figure 7 This is a schematic diagram of an electronic device provided in an embodiment of the present invention. For example... Figure 7 As shown, the electronic device 7 in this embodiment includes: a processor 70, a memory 71, and a computer program 72 stored in the memory 71 and executable on the processor 70. When the processor 70 executes the computer program 72, it implements the steps in the various bridge tension control method embodiments described above, for example... Figure 2 Steps 201 to 205 are shown. Alternatively, when the processor 70 executes the computer program 72, it implements the functions of each module / unit in the above-described device embodiments, for example... Figure 6 The functions of modules 61 to 62 are shown.

[0156] For example, the computer program 72 can be divided into one or more modules / units, which are stored in the memory 71 and executed by the processor 70 to complete the present invention. The one or more modules / units can be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program 72 in the electronic device 7. For example, the computer program 72 can be divided into... Figure 6 Modules 61 to 62 are shown.

[0157] The electronic device 7 can be a desktop computer, laptop, handheld computer, cloud server, or other computing device. The electronic device 7 may include, but is not limited to, a processor 70 and a memory 71. Those skilled in the art will understand that... Figure 7 This is merely an example of electronic device 7 and does not constitute a limitation on electronic device 7. It may include more or fewer components than shown, or combine certain components, or different components. For example, the electronic device may also include input / output devices, network access devices, buses, etc.

[0158] The processor 70 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0159] The memory 71 can be an internal storage unit of the electronic device 7, such as a hard disk or memory. The memory 71 can also be an external storage device of the electronic device 7, such as a plug-in hard disk, smart media card (SMC), secure digital card (SD), flash card, etc., equipped on the electronic device 7. Furthermore, the memory 71 can include both internal and external storage units of the electronic device 7. The memory 71 is used to store the computer program and other programs and data required by the electronic device. The memory 71 can also be used to temporarily store data that has been output or will be output.

[0160] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0161] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0162] Those skilled in the art will recognize that the units 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 implementations should not be considered beyond the scope of this invention.

[0163] In the embodiments provided by this invention, it should be understood that the disclosed devices / electronic devices and methods can be implemented in other ways. For example, the device / electronic device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0164] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0165] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0166] If the integrated module / unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various bridge tension control method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc. The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A method of bridge tensioning control, characterized by, include: Determine whether the current tensioning process is the first tensioning process; If the current tensioning process is the first tensioning process, then the first stage of synchronous tensioning operation is performed according to the tensioning method of synchronous elongation. Obtain the elongation deviation and force deviation between the tension jacks at both ends of the steel strand; Based on the elongation deviation and the force deviation, a first target tensioning method is determined, and the next stage of synchronous tensioning operation is performed based on the first target tensioning method. Jump to the step of "obtaining the elongation deviation and force deviation between the tension jacks at both ends of the steel strand" and continue to execute the subsequent steps to complete the first tensioning process; The method for determining the first target tension based on the elongation deviation and the force deviation includes: Detect whether the elongation deviation is greater than a first preset value; When the elongation deviation is greater than the first preset value, the tensioning method that synchronizes the elongation is determined as the first target tensioning method; When the elongation deviation is less than or equal to the first preset value, it is detected whether the force deviation is greater than the second preset value; When the force value deviation is greater than the second preset value, the tensioning method with synchronized force value is determined as the first target tensioning method; When the force deviation is less than or equal to the second preset value, the tensioning method that synchronizes the elongation is determined as the first target tensioning method; The bridge tension control method also includes: During synchronous tensioning, the elongation of the tensioning jacks at both ends of the steel strand is monitored in real time to see if it reaches the maximum elongation. When the elongation of the tension jack at either end of the steel strand reaches the maximum elongation, the current force value of each tension jack is obtained and determined as the initial force for jacking; the tension jacks at both ends of the steel strand are retracted to their initial positions in order to execute the next tensioning process. After determining whether the current tensioning process is the first tensioning process, the following is also included: If the current tensioning process is not the first tensioning process, the tensioning jacks at both ends of the steel strand are tensioned synchronously until the initial inverted force is reached, and the current stage of the tensioning process is determined based on the initial inverted force. If the current tensioning process is in the first stage, then the synchronous tensioning operation of the current stage will continue to be executed in accordance with the tensioning method of synchronous inverted elongation, and the next stage will be updated to the current stage; If the current tensioning process is not in the first stage, the deviation between the inverted elongation of the tensioning jacks at both ends of the steel strand and the force deviation are obtained; the inverted elongation is the difference between the current elongation and the elongation corresponding to the initial inverted force. Based on the deviation between the inverted elongation and the force deviation, a second target tensioning method is determined, and the synchronous tensioning operation of the current stage is performed based on the second target tensioning method, and the next stage is determined as the current stage; Jump to the step of "obtaining the deviation between the inverted elongation of the tension jacks at both ends of the steel strand and the force deviation", and continue to execute the subsequent steps to complete the current tensioning process; The method for determining the second target tension based on the deviation between the inverted elongation and the force deviation includes: Detect whether the deviation between the inverted elongation amounts is greater than a first preset value; When the deviation between the inverted elongation amounts is greater than the first preset value, the tensioning method that synchronizes the inverted elongation amounts is determined as the second target tensioning method; When the deviation between the inverted elongation amounts is less than or equal to the first preset value, it is detected whether the force value deviation is greater than the second preset value. When the force value deviation is greater than the second preset value, the tensioning method with synchronized force value is determined as the second target tensioning method.

2. The bridge tension control method according to claim 1, characterized by, Synchronous tensioning is performed using tensioning jacks at both ends of the steel strand, including: The tensioning jacks at both ends of the steel strand are tensioned synchronously using a synchronous tensioning method.

3. A bridge tensioning control device, characterized in that, include: The determination module is used to determine whether the current tensioning process is the first tensioning process; The tensioning module is used to perform the first stage of synchronous tensioning operation according to the tensioning method of synchronous elongation if the current tensioning process is the first tensioning process. The tensioning module is also used to obtain the elongation deviation and force deviation between the tensioning jacks at both ends of the steel strand; The tensioning module is also used to determine a first target tensioning method based on the elongation deviation and the force deviation, and to perform the next stage of synchronous tensioning operation based on the first target tensioning method. The tensioning module is also used to jump to execute the step of "obtaining the elongation deviation and force deviation between the tensioning jacks at both ends of the steel strand" and continue to execute subsequent steps to complete the first tensioning process; The method for determining the first target tension based on the elongation deviation and the force deviation includes: Detect whether the elongation deviation is greater than a first preset value; When the elongation deviation is greater than the first preset value, the tensioning method that synchronizes the elongation is determined as the first target tensioning method; When the elongation deviation is less than or equal to the first preset value, it is detected whether the force deviation is greater than the second preset value; When the force value deviation is greater than the second preset value, the tensioning method with synchronized force value is determined as the first target tensioning method; When the force deviation is less than or equal to the second preset value, the tensioning method that synchronizes the elongation is determined as the first target tensioning method; The tensioning module is also used for: During synchronous tensioning, the elongation of the tensioning jacks at both ends of the steel strand is monitored in real time to see if it reaches the maximum elongation. When the elongation of the tension jack at either end of the steel strand reaches the maximum elongation, the current force value of each tension jack is obtained and determined as the initial force for jacking; the tension jacks at both ends of the steel strand are retracted to their initial positions in order to execute the next tensioning process. The tensioning module is also used for: If the current tensioning process is not the first tensioning process, the tensioning jacks at both ends of the steel strand are tensioned synchronously until the initial inverted force is reached, and the current stage of the tensioning process is determined based on the initial inverted force. If the current tensioning process is in the first stage, then the synchronous tensioning operation of the current stage will continue to be executed in accordance with the tensioning method of synchronous inverted elongation, and the next stage will be updated to the current stage; If the current tensioning process is not in the first stage, the deviation between the inverted elongation of the tensioning jacks at both ends of the steel strand and the force deviation are obtained; the inverted elongation is the difference between the current elongation and the elongation corresponding to the initial inverted force. Based on the deviation between the inverted elongation and the force deviation, a second target tensioning method is determined, and the synchronous tensioning operation of the current stage is performed based on the second target tensioning method, and the next stage is determined as the current stage; Jump to the step of "obtaining the deviation between the inverted elongation of the tension jacks at both ends of the steel strand and the force deviation", and continue to execute the subsequent steps to complete the current tensioning process; The method for determining the second target tension based on the deviation between the inverted elongation and the force deviation includes: Detect whether the deviation between the inverted elongation amounts is greater than a first preset value; When the deviation between the inverted elongation amounts is greater than the first preset value, the tensioning method that synchronizes the inverted elongation amounts is determined as the second target tensioning method; When the deviation between the inverted elongation amounts is less than or equal to the first preset value, it is detected whether the force value deviation is greater than the second preset value. When the force value deviation is greater than the second preset value, the tensioning method with synchronized force value is determined as the second target tensioning method.

4. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the bridge tension control method as described in any one of claims 1 to 2 above.

5. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the bridge tension control method as described in any one of claims 1 to 2 above.

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