Intelligent construction method and system for continuous rigid frame bridge closure based on digital twinning

Abstract

The invention discloses an intelligent construction method and system for continuous rigid frame bridge closure based on digital twinning, and the intelligent construction method and system for continuous rigid frame bridge closure based on digital twinning realize intelligent, few-person and safe construction operation in the closure construction process by constructing the intelligent construction system for continuous rigid frame bridge closure. The system comprises closure intelligent construction equipment, a centralized control platform, a cloud database, an intelligent control algorithm and a remote digital twinborn control platform. The method mainly comprises the following steps: constructing a digital twin system, arranging intelligent equipment, monitoring and analyzing environment data and displacement data of a closure section, performing closure section pushing intelligent control, and performing concrete pouring counterweight double-target intelligent regulation and control. Data monitoring of a closure section before closure is carried out through an intelligent construction system, real-time intelligent control over closure pushing and concrete pouring counterweight load adjustment is carried out, accurate data collection and bridge body stress balance in the closure process are ensured, and the closure quality and the intelligent construction level of the continuous rigid frame bridge are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent construction of bridge closures, and specifically to an intelligent construction method and system for continuous rigid frame bridge closures based on digital twins. Background Art

[0002] Continuous rigid frame is the main structural form of long-span prestressed concrete bridges at present. It has the advantages of continuous beam and T-shaped rigid frame bridges and has been widely used in bridges with a span of 100~300 m in my country. During the construction of a bridge, the construction of the closure section is related to the success or failure of the entire bridge construction, and plays a decisive role in the change of the bridge's stress state and the construction quality.

[0003] The construction of the closure section of a continuous rigid frame bridge mainly includes three important processes: data monitoring of the closure section before closure, closure jacking and concrete pouring. In the traditional joint section data monitoring device and method, the detection equipment is easy to move in severe weather such as heavy rain, which will interfere with the on-site observation and affect the accuracy of the observation data. It is not convenient to continuously detect and collect the change value of the vertical displacement, which is not conducive to the realization of unmanned automatic monitoring and intelligent joint solution, and cannot automatically predict the joint period, and cannot provide comprehensive and highly accurate data support for the joint construction; the traditional joint joint pushing control and observation relies on the technicians of the joint section to press the oil pump start at the same time through the intercom to use the pump to push, and relies on multiple surveyors to observe each observation point and statistically analyze the data, which cannot realize automatic synchronous and precise control of pushing and risk prevention and control, nor can it realize real-time automatic displacement increment and observation and judgment of the pier top after pushing; the traditional concrete pouring counterweight control, due to the influence of steel bar binding and the initial setting of concrete in the later period, mainly relies on pressure weighing to calculate the concrete pouring quality to unload the water counterweight of equal mass, so the load adjustment accuracy is poor and can only realize the equal amount of coordinated counterweight unloading of a single joint section, and cannot achieve accurate observation and coordinated control on both sides of a single joint section and between two symmetrical joint buckles. Therefore, the traditional continuous rigid frame bridge closure construction method is unable to observe, calculate and analyze relevant data in real time, and is unable to coordinate precise control and adjustment. It requires coordination among multiple people, has a large workload, low efficiency, difficulty in closure quality control, and weak safety risk prevention capabilities. Summary of the invention

[0004] In response to the problems existing in the prior art, the present invention proposes a method and system for intelligent construction of continuous rigid frame bridge closure based on digital twin, which can realize data monitoring of the closure section before closure and real-time intelligent control of closure pushing and concrete pouring counterweight adjustment, ensure accurate data collection and balanced bridge body stress during the closure process, and improve the closure quality and intelligent construction level of continuous rigid frame bridges.

[0005] To achieve the above object, the present invention provides the following technical solutions: A method for intelligent construction of continuous rigid frame bridge closure based on digital twin, the method is to construct an intelligent construction system for continuous rigid frame bridge closure, and then use the system to automatically monitor, analyze and warn the environmental and temperature deformation and displacement data of each closure section before closure, and intelligently control the closure jacking and concrete pouring counterweight adjustment process, so as to realize the less-manned, intelligent and safe construction of the whole closure construction process. The method comprises the following steps: (1) Construct a continuous rigid frame bridge closure intelligent construction system based on digital twins, which includes closure intelligent construction equipment, closure section centralized control platform, cloud database, on-site and remote collaborative intelligent control algorithm, and remote digital twin intelligent control platform; (2) Arrangement and installation of intelligent equipment, including the installation of environmental and temperature deformation and displacement data acquisition devices for each closure section, closure jacking and its deformation and displacement observation equipment, and intelligent load adjustment of concrete pouring counterweights, and then the installation of data processing and transmission equipment for the closure section centralized control platform; (3) Monitoring, analysis and early warning of environmental data and temperature, strain and displacement data of each joint section before closure. After the counterweight loading of the joint section is completed, the temperature and wind speed data are collected by deploying environmental data monitoring equipment on site at each joint section. The width, axis deviation and height difference data of the joint section are collected by using the three-way displacement monitoring device of the joint section. The collected data are solved by using the joint section on-site and remote hierarchical joint solution method before closure, and the axis and height difference of the joint section are monitored and warned of over-limit and predicted. Finally, the solution results and early warning information are transmitted to the relevant joint staff through the digital twin intelligent control platform and mobile terminal for application; (4) Intelligent control of joint pushing of the closure section. The joint pushing process is carried out within the predicted joint pushing period. In the remote digital twin intelligent control platform, a hierarchical pushing task is created according to the designed pushing target force value. The pushing task is started with one button. All the joint sections of the whole bridge start to push together synchronously, automatically pre-push and press tightly, and judge the relevant data. If there is no abnormality, it will automatically enter the first level of pushing. During the pushing process, the displacement data of the pier top and the joint section are monitored simultaneously. Specifically, the real-time position data of each observation point is automatically patrolled and quickly collected by a measuring robot, and the data is sent to the wireless terminal device. The data is sent to the cloud database, and then the deviation discrimination algorithm in the remote digital twin intelligent control platform automatically obtains the data of each observation point in real time and solves the relevant displacement deviation value; after completing the first level of jacking, it automatically stabilizes the pressure and enters the displacement observation period, and judges in real time whether the displacement deviation value exceeds the relevant specification limit; after the observation period, if there is no displacement deviation value exceeding the limit at any measuring point, it automatically enters the next level of jacking and observation until the last level of jacking control is completed; after completing the jacking task, it automatically enters the continuous stabilization of the jacking force, and then locks the joint section. After the locking is completed, the oil pump will unload the oil synchronously to complete the jacking process; (5) Dual-target intelligent control of concrete pouring counterweights. During the pouring of a single joint section, an electromagnetic flow meter is used to monitor the volume of concrete pumped into the joint section as the first standard for balance control and converted into mass. The joint section centralized control platform controls the water pump to synchronously unload the equal-mass water counterweight to achieve the single joint section pouring balance control target. During the synchronous joint pouring of multiple joint sections, the counterweight values ​​on both sides of each joint section and the stress values ​​on both sides of the root of each T-structure are synchronously monitored as the second standard for balance control. When the counterweight difference between adjacent joint sections and the stress difference on both sides of the root of the T-structure exceed the specified threshold, the counterweights on the corresponding T-structure joint section are automatically coordinated or the concrete pouring of the relevant joint sections is coordinated to avoid the stress imbalance at both ends of the T-structure from exceeding the limit and achieving the control target of balanced internal forces on both sides of the T-structure. Dual-target intelligent control of concrete pouring counterweights is carried out in real time until the concrete pouring of the joint section is completed. (6) Complete the intelligent construction of the joint.

[0006] Furthermore, the joint closure intelligent construction equipment includes joint closure section data monitoring equipment, joint closure jacking and its deformation and displacement observation equipment, and concrete pouring counterweight automatic load adjustment equipment; The closure section data monitoring equipment includes a closure section three-dimensional displacement monitoring device, a temperature sensor and anemometer, which respectively monitor the three-dimensional displacement, temperature and wind speed data of the closure section as the temperature changes; The joint jacking and deformation displacement observation equipment includes an intelligent oil pump equipped with a jack, a measuring robot and its matching prism and a wireless data transmission module, and the measuring robot is a total station capable of automatic patrol measurement; The concrete pouring counterweight automatic load adjustment equipment comprises a counterweight water tank, an electromagnetic flow meter, a magnetic flap level gauge, a water pump, an electromagnetic valve, a T-structure stress sensor and a monitoring instrument.

[0007] Furthermore, the carrier of the closure section centralized control platform is the integrated control cabinet of the single closure section, which exchanges data with the closure section related intelligent devices except the measuring robot through wired connection, integrates the relevant data and synchronously sends it to the remote digital twin intelligent control platform, analyzes and solves the data through the on-site and remote collaborative intelligent control algorithm, and outputs relevant instructions to control the intelligent oil pump and water pump; The hardware of the closure section centralized control platform includes a wireless router, a touch screen, a PLC controller, two frequency converters, multiple relays, a network bridge and corresponding power switches (the PLC controller exchanges data with the remote digital twin intelligent control platform through the wireless router, connects to the touch screen to realize human-computer interaction, and controls the frequency converter and relay to control the speed and start and stop of the water pump respectively); when multiple closure ports are closed synchronously, the system of the closure section centralized control platform is one master and multiple slaves, and the master centralized control platform communicates with the remote digital twin intelligent control platform and the slave centralized control platform through the wireless router and the network bridge to exchange data.

[0008] Furthermore, the cloud database serves as a data transfer station. The measuring robot sends the collected observation point location data to the cloud database through the wireless data transmission module. At the same time, the remote digital twin intelligent control platform reads relevant data from the cloud database and performs calculations and analysis through on-site and remote collaborative intelligent control algorithms.

[0009] Furthermore, the on-site and remote collaborative intelligent control algorithm includes an on-site and remote hierarchical joint solution algorithm for closure data, an on-site and remote collaborative intelligent control algorithm for closure top-pushing, and an automatic dual-objective intelligent control algorithm for closure concrete pouring; The on-site and remote graded joint calculation algorithm for the closure data is to monitor the three-dimensional displacement of the closure section for several days to provide early warning of the axis displacement and height difference, and to predict the closure time by combining temperature and wind speed data; The on-site and remote collaborative intelligent control algorithm for joint jacking is to read all the data of the jacking jacks of each joint opening in real time on-site during the jacking process, transmit them to the remote digital twin intelligent control platform, and combine the displacement data of the jacking observation points to perform remote settlement and judgment of multiple joint openings, so as to realize the intelligent monitoring and solution of the whole bridge during the jacking process including risk abnormality monitoring, and synchronously send the control instructions to the joint section centralized control platform, so as to realize the synchronous control of the intelligent jacking equipment of each joint section, and ensure the safety of the jacking operation; The fully automatic dual-target intelligent control algorithm for closure concrete pouring is to monitor the volume of concrete pumped into each closure section according to the electromagnetic flowmeter during the pouring process of a single closure section, and convert it into mass as the first standard for balance control. The water counterweights on both sides of the closure section are unloaded at the same rate and with equal mass through the intelligent load adjustment equipment for concrete pouring counterweights. The total amount of water counterweight unloaded on the single closure mouth is equal to the mass of concrete pumped in as the first target control target to achieve counterweight balance during the concrete pouring process of a single closure section. At the same time, the water level altimeter of the water tank and the pre-test of the T-structure root are used to adjust the water level of the water tank and the pre-test of the T-structure root. The buried steel bar stress sensors monitor the total water weight value of each joint and the stress value on both sides of the root of each T-structure respectively as the second standard of balanced control. When the difference of water weight on adjacent joints and the stress difference on both sides of the root of the T-structure exceed the specified threshold, the water weight on both sides of the joint section at both ends of the corresponding T-structure will be automatically coordinated and matched for unbalanced unloading or the concrete pouring and pumping order of adjacent joint sections will be adjusted to ensure that the first target control target is achieved while avoiding the aggravation of the imbalance of the joint weight at both ends of the T-structure, and the realization of stress balance on both sides of the root of the T-structure is the second control target; The total water weight value of the joint section is equal to the sum of the water weights on both sides of the joint section.

[0010] Furthermore, the remote digital twin intelligent control platform uses BIM+GIS technology to create a digital twin of the bridge closure construction stage as a digital space base, simultaneously accesses the closure control-related intelligent equipment data in the digital space, and uses on-site and remote collaborative intelligent control algorithms to perform data analysis and risk warning, thereby realizing intelligent interactive control of each closure section and improving decision-making efficiency; the remote digital twin intelligent control platform includes a closure section data monitoring panel before closure, a closure top-pushing intelligent control panel, and a fully automatic monitoring panel for concrete pouring counterweight adjustment; The data monitoring panel of the closure section before closure can be used to check its historical monitoring data by clicking on the instrument and equipment corresponding to the closure mouth in the digital twin space. At the same time, if the monitoring data of the three-way displacement monitoring device of the closure section exceeds the limit, the corresponding position in the digital twin space will be prompted with yellow or red flashing according to the excess amplitude, and the abnormal information will be sent to the corresponding person in charge synchronously. The corresponding closure time prediction button can be clicked to start the prediction algorithm program, analyze the relevant data to obtain the time-temperature-closure mouth deformation increment curve, and the predicted closure time period will be clearly marked on the curve; The intelligent control panel for jacking of joints includes a jacking task input module, a jacking control module, a jacking observation point displacement observation data analysis module, a risk prevention and control warning module and an abnormal correction module; the jacking task input module creates a hierarchical synchronous jacking task with the jacking target force value as the control target through the task data input window, and after the task is created and saved, it is sent to the centralized control platform of each joint section, and the task parameters are further forwarded to the control system of the intelligent oil pump; the jacking control module includes synchronous start, synchronous stop, synchronous oil return control buttons and a display unit for the jacking force and stroke data of all jacks at each joint mouth; the jacking observation point displacement observation data analysis module is to analyze the longitudinal displacement of the pier top observation point along the bridge and the height difference and axial deviation data of each joint mouth in real time and hang them to the corresponding position on the digital twin, which can be visualized in real time in the digital twin space. The relevant data of the jacking process can be controlled in a quantified manner; the risk prevention and control early warning module is mainly used to monitor whether the jacking jack forces of each joint are balanced during the jacking process. When an abnormal sudden change in the jacking force of a certain jack exceeds the threshold, an early warning is issued immediately and the oil return pressure is automatically coordinated to avoid the bridge body from being cracked and damaged by the unbalanced force jacking; the abnormal correction module monitors the height difference and axial deviation data of each joint in real time. When the threshold value specified in the specification is exceeded, the jacking is stopped in the graded jacking observation stage, and the progressive unbalanced jacking control principle is adopted according to the deviation situation to try the correction control, and a correction task controlled by the jack stroke is created through the correction data input window, and a real-time millimeter-level jacking correction task is started with one button. After one jacking, the data is automatically observed and analyzed synchronously, and it is repeated many times until the correction control is completed. After the correction is completed, it returns to the jacking control module to continue the graded jacking; The described fully automatic monitoring panel for concrete pouring counterweight loading and adjustment is a panel that connects the data of each closure to the corresponding digital twin in the digital twin space during the process of concrete pouring counterweight loading and adjustment, and can perform visual global monitoring to facilitate the deployment of concrete pumping command, including the total amount and progress of concrete pouring at each closure, the unloading mass of water counterweights on one side and both sides of each closure and the mass of remaining counterweights, the stress calculation value of the root of the T-structure, the unbalanced pouring deviation value of adjacent closure sections, and the stress deviation value on both sides of the root of the T-structure; at the same time, important indicator data such as the pouring progress of each closure are synchronously displayed on both sides of the display interface of the digital twin space.

[0011] Furthermore, the deployment and installation of the intelligent equipment is based on a closure as a deployment unit. On each closure, the environment and temperature deformation and displacement data acquisition device of the closure section, the closure jacking and its deformation and displacement observation equipment, and the intelligent load adjustment equipment for concrete pouring counterweight are deployed and installed, and then the data processing and transmission equipment such as the closure section centralized control platform are installed to form a three-level intelligent control system of the closure site intelligent equipment-closure section centralized control platform-remote digital twin intelligent control platform; The environment and temperature deformation displacement data acquisition device of the joint section is arranged and installed by arranging a temperature meter and an anemometer on each joint mouth, and at least one set of three-way displacement monitoring devices of the joint section is symmetrically installed along the bridge axis, the temperature meter is installed in the control cabinet of the joint section centralized control platform, and the anemometer is connected and fixed to the side of the control cabinet of the joint section centralized control platform with a vertical pole; The arrangement and installation of the joint jacking and deformation displacement observation equipment is to arrange a group of intelligent oil pump equipment on each joint mouth, one intelligent oil pump is equipped with 2 or 4 jacks at the same time, the jacks are connected with the force transmission rods and pressed against the cross section of the joint section, and 4 prisms for measuring the spatial coordinates of the observation points are arranged at the four corners of the joint mouth, and the measurement robots are arranged according to the measurement site conditions at the bridge construction site with the goal of covering all observation points; The layout and installation of the concrete pouring counterweight intelligent load adjustment equipment is to symmetrically arrange several water tanks on both sides of each joint according to the counterweight requirements. The water tanks are connected in parallel to form a communicating vessel and connected to a magnetic flap level gauge for monitoring the water level of the water tank. A water pump is installed at the water outlet end, and a solenoid valve and an electromagnetic flowmeter are installed on the water outlet pipe in front of the water pump to stop water discharge and monitor the volume of water discharge respectively; at each joint section, an electromagnetic flowmeter is installed on the concrete pump pipe to detect the volume of concrete pumped in; the stress sensor equipment at the root of the T-structure is pre-buried in the early stage, and data can be directly read from the cloud database; the loading of the water tank water counterweight is carried out through the external water supply system, and the water counterweight loading at both ends of each T-structure is kept balanced and synchronously loaded, and is carried out according to the planned counterweight, which is converted into the corresponding water level. When the water level reaches the target height, the relevant personnel are automatically reminded to stop water injection, and there is no need to wait all the time; The layout and installation of the closure section centralized control platform is to install an integrated electrical cabinet on each closure opening, which is wired to other electrical equipment; The remote digital twin intelligent control platform is deployed in the bridge construction monitoring center and uses wireless communication to exchange data with the closure section centralized control platform.

[0012] The three-dimensional displacement monitoring device for joint sections is a device used to monitor the three-dimensional displacement changes of structures during the construction of joint sections (such as bridges, tunnels, etc.). This device is usually used to ensure the safety of construction and the stability of the structure. It can measure and record the displacement of the structure in different directions in real time, including: Lateral displacement: displacement of the structure in the left-right direction.

[0013] Longitudinal displacement: displacement of the structure in the front-to-back direction.

[0014] Vertical displacement: displacement of the structure in the up and down directions.

[0015] Technical effects and advantages of the present invention: 1. Unmanned automatic rapid monitoring and analysis of data. In the data monitoring of the pre-closing section, closure jacking monitoring and concrete pouring counterweight adjustment of the closure section of the continuous rigid frame bridge, the input of many personnel is reduced, and the monitoring of relevant data can realize unmanned automatic high-precision rapid monitoring and analysis; 2. Digital twin three-dimensional visualization safe and intelligent collaborative control. Relying on the remote digital twin intelligent control platform, the closure pushing control is carried out. After the "one-button start" graded pushing task, the intelligent oil pumps on each closure mouth start pushing synchronously, and the relevant data are automatically acquired and solved. The relevant data can be viewed in the digital space with a three-dimensional visualization global perspective. If an over-limit situation occurs, the pushing will be automatically stopped, and progressive synchronous correction control can be achieved. Safety risk prevention and control can be carried out simultaneously. In the event of abnormal situations such as oil leakage from the jack, the oil will be automatically and synchronously returned to relieve pressure to avoid damage to the bridge structure, thus achieving safe, fast and intelligent pushing control. 3. Dual-target intelligent control of concrete pouring counterweights: Through joint control of multiple closure counterweights throughout the bridge, dual-balance control targets of load balance of single closure section pouring counterweights and internal force balance at both ends of the T-structure can be achieved simultaneously, ensuring balanced force on the entire bridge and improving closure quality. 4. Intelligent control of synchronous closure construction of multiple closures of multi-span continuous rigid frame bridges, relying on the remote digital twin intelligent control platform, can achieve synchronous and precise coordinated intelligent control of closure pushing control and concrete pouring counterweight regulation to ensure construction safety and construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The logic diagram of the control method of the bridge steel web water transportation and hoisting system based on digital twin in this application; Figure 2Full bridge layout diagram of the continuous rigid frame bridge closure intelligent equipment system; Figure 3 Closure equipment layout diagram; 1. Three-dimensional displacement monitoring device for the closure section; 2. Anemometer; 3. Intelligent oil pump; 4. Jack; 41. Force transmission rod; 5. Measuring robot; 51 Observation prism; 6. Counterweight water tank; 7. Electromagnetic flowmeter; 8. Magnetic flap level gauge; 9. Water pump; 10. Solenoid valve; 11. Centralized control platform for the closure section; 12. Remote digital twin intelligent control platform; 13. Section for the layout of stress sensors at the root of the T-structure. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The present invention involves a method and system for intelligent construction of a continuous rigid frame bridge closure based on digital twins. It is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0018] Reference Figures 1 to 3 As shown, the present invention provides the following technical solutions: a control method for a bridge steel web water transportation and hoisting system based on digital twins, wherein the construction method is to construct a continuous rigid frame bridge joint intelligent construction system, and then use the system to automatically monitor, analyze and warn the environmental and temperature deformation and displacement data of each joint section before the joint is closed, and to intelligently control the joint top pushing and concrete pouring counterweight adjustment process, so as to realize the less-manned, intelligent and safe construction of the whole joint construction process, and the construction method includes the following steps: (1) Research and develop a continuous rigid frame bridge closure intelligent construction system based on digital twins, including a closure intelligent construction equipment system, a closure section centralized control platform11, a cloud database, an on-site and remote collaborative intelligent control algorithm, and a remote digital twin intelligent control platform12; (2) Installation of intelligent equipment. Install the environmental and temperature deformation and displacement data acquisition devices of each joint section, the joint pushing and deformation and displacement observation equipment, and the intelligent load adjustment equipment for concrete pouring counterweights, and then install the joint section centralized control platform 11 and other data processing and transmission equipment; (3) Monitoring, analysis and early warning of environmental data and temperature, strain and displacement data of each joint section before closure. After the counterweight loading of the joint section is completed, the temperature and wind speed data are collected by deploying environmental data monitoring equipment on site at each joint section. The width, axis deviation and height difference data of the joint section are collected by using the three-way displacement monitoring device 1 of the joint section. The collected data are solved by using the joint section on-site and remote hierarchical joint solution method before closure, and the axis and height difference of the joint section are monitored and warned of over-limit and the joint period is predicted. Finally, the solution results and early warning information are transmitted to the relevant joint staff through the digital twin intelligent control platform 12 and the mobile terminal for application; (4) Intelligent control of jacking of the joint section. The jacking process is carried out within the predicted jacking period. In the remote digital twin intelligent control platform 12, a graded jacking task is created according to the designed jacking target force value, and the jacking task is started with a "one-click" function. All jacking sections of the entire bridge start jacking in a coordinated manner, automatically pre-jacking and pressing together, and judging the relevant data. If there is no abnormality, it will automatically enter the first level of jacking. During the jacking process, the displacement data of the pier top and the joint section are monitored simultaneously. Specifically, the real-time position data of each observation point is automatically patrolled and quickly collected by the measuring robot 5, and the data is sent to the cloud database using a wireless terminal device. , and then the offset discrimination algorithm in the remote digital twin intelligent control platform 12 automatically obtains the data of each observation point in real time and solves the relevant displacement deviation value; after completing the first level of jacking, it automatically stabilizes the pressure and enters the displacement observation period, and judges in real time whether the displacement deviation value exceeds the relevant specification limit; after the observation period, if there is no displacement deviation value exceeding the limit at any measuring point, it automatically enters the next level of jacking and observation until the last level of jacking control is completed; after completing the jacking task, it automatically enters the continuous stabilization of the jacking force, and then locks the joint section. After the locking is completed, the oil pump unloads the oil synchronously to complete the jacking process; (5) Dual-target intelligent control of concrete pouring counterweight. During the pouring of a single joint section, an electromagnetic flowmeter 7 is used to monitor the volume of concrete pumped into the joint section as the first standard for balance control and converted into mass. The joint section centralized control platform controls the water pump to synchronously unload the equal-mass water counterweight to achieve the single joint section pouring balance control target. During the synchronous joint pouring of multiple joint sections, the counterweight values ​​on both sides of each joint section and the stress values ​​on both sides of the root of each T-structure are synchronously monitored as the second standard for balance control. When the counterweight difference between adjacent joint sections and the stress difference on both sides of the root of the T-structure exceeds the specified threshold, the counterweight on the corresponding T-structure joint section is automatically coordinated or the concrete pouring of the relevant joint sections is coordinated to avoid the stress imbalance at both ends of the T-structure from exceeding the limit and achieving the control target of balanced internal force on both sides of the T-structure. Dual-target intelligent control of concrete pouring counterweight is carried out in real time until the concrete pouring of the joint section is completed.

[0019] (6) Complete the intelligent construction of the joint.

[0020] Furthermore, the joint closure intelligent construction equipment system includes joint closure section data monitoring equipment, joint closure jacking and deformation and displacement observation equipment, and concrete pouring counterweight automatic load adjustment equipment; The closure section data monitoring device comprises a closure section three-dimensional displacement monitoring device 1, a temperature sensor and anemometer 2, which respectively monitor the three-dimensional displacement, temperature and wind speed data of the closure section as the temperature changes; The joint jacking and deformation displacement observation equipment includes an intelligent oil pump 3 equipped with a jack 4, a measuring robot 5 and its matching observation prism 51 and a wireless data transmission module DTU. The measuring robot 5 is a total station that can automatically patrol and measure; The concrete pouring counterweight automatic load adjustment equipment includes a counterweight water tank 6, an electromagnetic flowmeter 7 for measuring water and concrete flow respectively, a magnetic flap level meter 8 for measuring the water level height of the water tank, a water pump 9, an electromagnetic valve 10 and a T-structure stress sensor and a monitor.

[0021] Furthermore, the carrier of the closure section centralized control platform 11 is the integrated control cabinet of the single closure section, which exchanges data with the intelligent devices related to the closure section through wired connection, except for the measuring robot 5, and integrates the relevant data and synchronously sends it to the remote digital twin intelligent control platform 12, and analyzes and solves the data through the on-site and remote collaborative intelligent control algorithm, and outputs relevant instructions to control the intelligent oil pump 3 and water pump 9; The hardware of the closure section centralized control platform 11 includes a wireless router, a touch screen, a PLC controller, two frequency converters, multiple relays, a network bridge and corresponding power switches; when multiple closure ports are closed synchronously, the system of the closure section centralized control platform 11 is one master and multiple slaves, and the master centralized control platform communicates with the remote digital twin intelligent control platform 12 and the slave centralized control platform through the wireless router and the network bridge to exchange data.

[0022] Furthermore, the cloud database serves as a data transfer station. The measuring robot 5 sends the collected observation point location data to the cloud database through the wireless data transmission module DTU. At the same time, the remote digital twin intelligent control platform 12 reads relevant data from the cloud database and performs calculation and analysis through the on-site and remote collaborative intelligent control algorithm.

[0023] Furthermore, the on-site and remote collaborative intelligent control algorithm includes an on-site and remote hierarchical joint solution algorithm for closure data, an on-site and remote collaborative intelligent control algorithm for closure top-pushing, and an automatic dual-objective intelligent control algorithm for closure concrete pouring; The on-site and remote graded joint calculation algorithm for the closure data is to monitor the three-dimensional displacement of the closure section for several days to provide early warning of the axis displacement and height difference, and to predict the closure time by combining temperature and wind speed data; The on-site and remote collaborative intelligent control algorithm for joint jacking is to read the data of all jacking jacks 4 of each joint mouth in real time on-site during the jacking process, transmit it to the remote digital twin intelligent control platform 12, and combine the displacement data of the jacking observation point to perform remote settlement and judgment of multiple joint mouths, so as to realize the intelligent monitoring and solution of the whole bridge during the jacking process including risk abnormality monitoring, and synchronously send the control instructions to the joint section centralized control platform 11, so as to realize the synchronous control of the intelligent jacking equipment of each joint section, and ensure the safety of the jacking operation; The fully automatic dual-target intelligent control algorithm for closure concrete pouring is to monitor the volume of concrete pumped into each closure section according to the electromagnetic flowmeter 7 during the pouring process of a single closure section, and convert it into mass as the first standard for balance control. The water counterweights on both sides of the closure section are unloaded at the same rate with equal mass through the intelligent load adjustment equipment for concrete pouring counterweights. The total amount of water counterweight unloaded on the single closure mouth is equal to the mass of concrete pumped in as the first target control target to achieve counterweight balance during the concrete pouring process of a single closure section. At the same time, the water level altimeter of the water tank and the stress sensor of the steel bars embedded in the root of the T-structure are used to control the water level of the concrete pumped into the closure section. The device monitors the total water weight value of each closure respectively. The total weight value is equal to the sum of the water weights on both sides of the closure section and the stress values ​​on both sides of the root of each T-structure. It serves as the second criterion for balanced control. When the difference in water weights on adjacent closures and the stress difference on both sides of the root of the T-structure exceed the specified threshold, it starts to automatically coordinate and adjust the water weights on both sides of the closure section at both ends of the corresponding T-structure for unbalanced unloading or adjust the concrete pouring and pumping order of adjacent closure sections to ensure that the first target control target is achieved while avoiding the aggravation of the imbalance of the closure weights at both ends of the T-structure. Achieving stress balance on both sides of the root of the T-structure is the second control target.

[0024] Furthermore, the remote digital twin intelligent control platform 12 uses BIM+GIS technology to create a digital twin of the bridge closure construction stage as a digital space base, simultaneously accesses the closure control-related intelligent equipment data in the digital space, and uses on-site and remote collaborative intelligent control algorithms to perform data analysis and risk warning, thereby realizing intelligent interactive control of each closure section and improving decision-making efficiency; the remote digital twin intelligent control platform 12 includes a closure section data monitoring panel before closure, a closure top-pushing intelligent control panel, and a fully automatic monitoring panel for concrete pouring counterweight adjustment; The data monitoring panel of the closure section before closure can be used to check its historical monitoring data by clicking on the instrument and equipment corresponding to the closure mouth in the digital twin space. At the same time, if the monitoring data of the three-way displacement monitoring device of the closure section exceeds the limit, the corresponding position in the digital twin space will be prompted with yellow or red flashing according to the excess amplitude, and the abnormal information will be sent to the corresponding person in charge synchronously. The corresponding closure time prediction button can be clicked to start the prediction algorithm program, analyze the relevant data to obtain the time-temperature-closure mouth deformation increment curve, and the predicted closure time period will be clearly marked on the curve; The intelligent control panel for jacking of joints includes a jacking task input module, a jacking control module, a jacking observation point displacement observation data analysis module, a risk prevention and control warning module and an abnormal correction module; the jacking task input module creates a hierarchical synchronous jacking task with a jacking target force value as a control target through a task data input window, and after the task is created and saved, it is sent to the centralized control platform 11 of each joint section, and the task parameters are further forwarded to the control system of the intelligent oil pump 3; the jacking control module includes synchronous start, synchronous stop, synchronous oil return control buttons and a display unit for the jacking force and stroke data of all jacks 4 at each joint mouth; the jacking observation point displacement observation data analysis module is to analyze the longitudinal displacement of the pier top observation point along the bridge and the height difference and axial deviation data of each joint mouth in real time and hang them to the corresponding position on the digital twin, which can be visualized in real time in the digital twin space. The risk prevention and control early warning module mainly monitors whether the jacking jacks of each joint are balanced during the jacking process. When the jacking force of a certain jack 4 suddenly changes and exceeds the threshold, an early warning is issued immediately and the oil return pressure is automatically coordinated to avoid the bridge body from being cracked and damaged by the unbalanced force jacking. The abnormal correction module monitors the height difference and axial deviation data of each joint in real time. When the threshold value specified in the specification is exceeded, the jacking is stopped in the graded jacking observation stage. The progressive unbalanced jacking control principle is adopted according to the deviation situation to try the correction control. A correction task controlled by the jack 4 stroke is created through the correction data input window. The real-time millimeter-level jacking correction task is started with one button. After one jacking, the data is automatically observed and analyzed synchronously. This is repeated many times until the correction control is completed. After the correction is completed, the module returns to the jacking control module to continue the graded jacking.

[0025] The described fully automatic monitoring panel for concrete pouring counterweight loading and adjustment is a panel that connects the data of each closure to the corresponding digital twin in the digital twin space during the process of concrete pouring counterweight loading and adjustment, and can perform visual global monitoring to facilitate the deployment of concrete pumping command, including the total amount and progress of concrete pouring at each closure, the unloading mass of water counterweights on one side and both sides of each closure and the mass of remaining counterweights, the stress calculation value of the root of the T-structure, the unbalanced pouring deviation value of adjacent closure sections, and the stress deviation value on both sides of the root of the T-structure; at the same time, important indicator data such as the pouring progress of each closure are synchronously displayed on both sides of the display interface of the digital twin space.

[0026] Furthermore, the deployment and installation of the intelligent equipment is based on a closure as a deployment unit, and the environment and temperature deformation and displacement data acquisition device of the closure section, the closure jacking and its deformation and displacement observation equipment, and the intelligent load adjustment equipment for concrete pouring counterweight are deployed and installed at each closure, and then the closure section centralized control platform 11 and other data processing and transmission equipment are installed to form a three-level intelligent control system of the closure site intelligent equipment - closure section centralized control platform 11 - remote digital twin intelligent control platform 12; The environment and temperature deformation displacement data acquisition device of the joint section is arranged and installed, a temperature meter and an anemometer 2 are arranged on each joint mouth, and at least one set of three-way displacement monitoring devices 1 of the joint section are symmetrically installed along the bridge axis. The temperature meter is installed in the control cabinet of the joint section centralized control platform 11, and the anemometer 2 is connected and fixed to the side of the control cabinet of the joint section centralized control platform 11 with a vertical pole; The closure pushing and deformation displacement observation equipment are arranged and installed, and a group of intelligent oil pumps 3 are arranged on each closure mouth. One intelligent oil pump 3 is also equipped with 2 or 4 jacks 4. The jacks 4 are connected to the force transmission rods 41 and rest on the cross-section of the closure section. Four observation prisms 51 for measuring the spatial coordinates of the observation points are arranged at the four corners of the closure mouth. At the same time, a measurement robot 5 is arranged according to the measurement site conditions at the bridge construction site with the goal of covering all observation points.

[0027] The layout and installation of the intelligent load-adjusting equipment for concrete pouring counterweight is to symmetrically arrange several water tanks on both sides of each joint mouth according to the counterweight requirements. The water tanks are connected in parallel to form a communicating vessel and connected to a magnetic flap level gauge 8 for monitoring the water level of the water tank. A water pump 9 is installed at the water outlet end. A solenoid valve 10 and an electromagnetic flowmeter 7 are installed on the water outlet pipe in front of the water pump 9 to stop water discharge and monitor the volume of water discharge respectively; at each joint section, an electromagnetic flowmeter 7 is installed on the concrete pump pipe to detect the volume of concrete pumped in; the stress sensor equipment at the root of the T-structure is pre-buried in the early stage, and data can be directly read from the cloud database; the loading of the water counterweight of the water tank is carried out through the external water supply system, and the water counterweight loading at both ends of each T-structure is kept balanced and synchronously loaded, and is carried out according to the planned counterweight, which is converted into the corresponding water level. When the water is loaded to the target height, the relevant personnel are automatically reminded to stop water injection, and there is no need to wait all the time; The installation of the closure section centralized control platform 11 is to install an integrated electrical cabinet on each closure opening, which is wired to other electrical equipment; Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example 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 performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0028] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0029] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0030] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0031] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0032] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0033] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method for a bridge steel web water transportation and hoisting system based on digital twin, characterized in that: The construction method is to construct a continuous rigid frame bridge joint intelligent construction system, and then use the system to automatically monitor, analyze and warn the environmental and temperature deformation and displacement data of each joint section before the joint is closed, and to intelligently control the joint jacking and concrete pouring counterweight adjustment process, so as to achieve a less-manned, intelligent and safe construction operation in the whole process of the joint construction. The construction method includes the following steps: (1) Construct a continuous rigid frame bridge closure intelligent construction system based on digital twins, which includes closure intelligent construction equipment, closure section centralized control platform, cloud database, on-site and remote collaborative intelligent control algorithm, and remote digital twin intelligent control platform; (2) Arrangement and installation of intelligent equipment, including the installation of environmental and temperature deformation and displacement data acquisition devices for each closure section, closure jacking and its deformation and displacement observation equipment, and intelligent load adjustment of concrete pouring counterweights, and then the installation of data processing and transmission equipment for the closure section centralized control platform; (3) Monitoring, analysis and early warning of environmental data and temperature, strain and displacement data of each joint section before closure. After the counterweight loading of the joint section is completed, the temperature and wind speed data are collected by deploying environmental data monitoring equipment on site at each joint section. The width, axis deviation and height difference data of the joint section are collected by using the three-way displacement monitoring device of the joint section. The collected data are solved by using the joint section on-site and remote hierarchical joint solution method before closure, and the axis and height difference of the joint section are monitored and warned of over-limit and predicted. Finally, the solution results and early warning information are transmitted to the relevant joint staff through the digital twin intelligent control platform and mobile terminal for application; (4) Intelligent control of joint pushing of the closure section. The joint pushing process is carried out within the predicted joint pushing period. In the remote digital twin intelligent control platform, a hierarchical pushing task is created according to the designed pushing target force value. Click one button to start the pushing task. All the joint sections of the whole bridge start to push together synchronously, automatically pre-push and press tightly, and judge the relevant data. If there is no abnormality, it will automatically enter the first level of pushing. During the pushing process, the displacement data of the pier top and the joint section are monitored simultaneously. Specifically, the real-time position data of each observation point is automatically patrolled and quickly collected by a measuring robot, and the wireless terminal equipment is used to transmit the real-time position data of each observation point to the pier top and the joint section. The data is sent to the cloud database, and then the deviation discrimination algorithm in the remote digital twin intelligent control platform automatically obtains the data of each observation point in real time and solves the displacement deviation value; after completing the first level of jacking, it automatically stabilizes the pressure and enters the displacement observation period, and judges in real time whether the displacement deviation value exceeds the specification limit; after the observation period, if there is no displacement deviation value exceeding the limit at any measuring point, it automatically enters the next level of jacking and observation until the last level of jacking control is completed; after completing the jacking task, it automatically enters the continuous stabilization of the jacking force, and then locks the joint section. After the locking is completed, the oil pump will unload the oil synchronously to complete the jacking process; (5) Dual-target intelligent control of concrete pouring counterweights. During the pouring of a single joint section, an electromagnetic flow meter is used to monitor the volume of concrete pumped into the joint section as the first standard for balance control and converted into mass. The joint section centralized control platform controls the water pump to synchronously unload the equal-mass water counterweight to achieve the single joint section pouring balance control target. During the synchronous joint pouring of multiple joint sections, the counterweight values ​​on both sides of each joint section and the stress values ​​on both sides of the root of each T-structure are synchronously monitored as the second standard for balance control. When the counterweight difference between adjacent joint sections and the stress difference on both sides of the root of the T-structure exceed the specified threshold, the counterweights on the corresponding T-structure joint section are automatically coordinated or the concrete pouring of the relevant joint sections is coordinated to avoid the stress imbalance at both ends of the T-structure from exceeding the limit and achieving the control target of balanced internal forces on both sides of the T-structure. Dual-target intelligent control of concrete pouring counterweights is carried out in real time until the concrete pouring of the joint section is completed. (6) Complete the intelligent construction of the joint.

2. The control method of the bridge steel web water transportation and hoisting system based on digital twin according to claim 1 is characterized by: The joint closure intelligent construction equipment includes joint closure section data monitoring equipment, joint closure jacking and deformation displacement observation equipment and concrete pouring counterweight automatic load adjustment equipment; The closure section data monitoring equipment includes a closure section three-dimensional displacement monitoring device, a temperature sensor and anemometer, which respectively monitor the three-dimensional displacement, temperature and wind speed data of the closure section as the temperature changes; The joint jacking and deformation displacement observation equipment includes an intelligent oil pump equipped with a jack, a measuring robot and its matching prism and a wireless data transmission module, and the measuring robot is a total station capable of automatic patrol measurement; The concrete pouring counterweight automatic load adjustment equipment comprises a counterweight water tank, an electromagnetic flow meter, a magnetic flap level gauge, a water pump, an electromagnetic valve, a T-structure stress sensor and a monitoring instrument.

3. The bridge steel web water transportation and hoisting system based on digital twinning according to claim 1 is characterized by: Data is exchanged with other intelligent devices related to the joint closure section except the measuring robot through wired connection, and relevant data is integrated and synchronously sent to the remote digital twin intelligent control platform. The data is analyzed and solved through the on-site and remote collaborative intelligent control algorithm, and relevant instructions are output to control the intelligent oil pump and water pump; The hardware of the closure section centralized control platform includes a wireless router, a touch screen, a PLC controller, 2 frequency converters, multiple relays, a bridge and a matching power switch; when multiple closure ports are closed synchronously, the system of the closure section centralized control platform is one master and multiple slaves, and the master centralized control platform communicates with the remote digital twin intelligent control platform and the slave centralized control platform through the wireless router and the bridge to exchange data.

4. The control method of the bridge steel web water transportation and hoisting system based on digital twin according to claim 1 is characterized by: The cloud database serves as a data transfer station. The measuring robot sends the collected observation point location data to the cloud database through the wireless data transmission module. At the same time, the remote digital twin intelligent control platform reads relevant data from the cloud database and performs calculations and analysis through on-site and remote collaborative intelligent control algorithms.

5. The control method of the bridge steel web water transportation and hoisting system based on digital twin according to claim 1 is characterized by: The on-site and remote collaborative intelligent control algorithm includes an on-site and remote hierarchical joint solution algorithm for closure data, an on-site and remote collaborative intelligent control algorithm for closure top-pushing, and an automatic dual-objective intelligent control algorithm for closure concrete pouring; The on-site and remote graded joint calculation algorithm for the closure data is to monitor the three-dimensional displacement of the closure section for several days to provide early warning of the axis displacement and height difference, and to predict the closure time by combining temperature and wind speed data; The on-site and remote collaborative intelligent control algorithm for joint jacking is to read all the data of the jacking jacks of each joint opening in real time on-site during the jacking process, transmit them to the remote digital twin intelligent control platform, and combine the displacement data of the jacking observation points to perform remote settlement and judgment of multiple joint openings, so as to realize the intelligent monitoring and solution of the whole bridge during the jacking process including risk abnormality monitoring, and synchronously send the control instructions to the joint section centralized control platform, so as to realize the synchronous control of the intelligent jacking equipment of each joint section, and ensure the safety of the jacking operation; The fully automatic dual-target intelligent control algorithm for closure concrete pouring is to monitor the volume of concrete pumped into each closure section according to the electromagnetic flowmeter during the pouring process of a single closure section, and convert it into mass as the first standard for balance control. The water counterweights on both sides of the closure section are unloaded at the same rate and with equal mass through the intelligent load adjustment equipment for concrete pouring counterweights. The total amount of water counterweight unloaded on the single closure mouth is equal to the mass of concrete pumped in as the first target control target to achieve counterweight balance during the concrete pouring process of a single closure section. At the same time, the water level altimeter of the water tank and the pre-test of the T-structure root are used to adjust the water level of the water tank and the pre-test of the T-structure root. The buried steel bar stress sensors monitor the total water weight value of each joint and the stress value on both sides of the root of each T-structure respectively as the second standard of balanced control. When the difference of water weight on adjacent joints and the stress difference on both sides of the root of the T-structure exceed the specified threshold, the water weight on both sides of the joint section at both ends of the corresponding T-structure will be automatically coordinated and matched for unbalanced unloading or the concrete pouring and pumping order of adjacent joint sections will be adjusted to ensure that the first target control target is achieved while avoiding the aggravation of the imbalance of the joint weight at both ends of the T-structure, and the realization of stress balance on both sides of the root of the T-structure is the second control target; The total water weight value is equal to the sum of the water weights on both sides of the joint section.

6. The control method of the bridge steel web water transportation and hoisting system based on digital twin according to claim 1 is characterized by: The remote digital twin intelligent control platform uses BIM+GIS technology to create a digital twin of the bridge closure construction stage as a digital space base, simultaneously accesses the data of intelligent equipment related to closure control in the digital space, and uses on-site and remote collaborative intelligent control algorithms to perform data analysis and risk warning, thereby realizing intelligent interactive control of each closure section and improving decision-making efficiency; the remote digital twin intelligent control platform includes a closure section data monitoring panel before closure, a closure top-pushing intelligent control panel, and a fully automatic monitoring panel for concrete pouring counterweight adjustment; The data monitoring panel of the closure section before closure can be used to check its historical monitoring data by clicking on the instrument and equipment corresponding to the closure mouth in the digital twin space. At the same time, if the monitoring data of the three-way displacement monitoring device of the closure section exceeds the limit, the corresponding position in the digital twin space will be prompted with yellow or red flashing according to the excess amplitude, and the abnormal information will be sent to the corresponding person in charge synchronously. The corresponding closure time prediction button can be clicked to start the prediction algorithm program, analyze the relevant data to obtain the time-temperature-closure mouth deformation increment curve, and the predicted closure time period will be clearly marked on the curve; The intelligent control panel for jacking of joints includes a jacking task input module, a jacking control module, a jacking observation point displacement observation data analysis module, a risk prevention and control warning module and an abnormal correction module; the jacking task input module creates a hierarchical synchronous jacking task with the jacking target force value as the control target through the task data input window, and after the task is created and saved, it is sent to the centralized control platform of each joint section, and the task parameters are further forwarded to the control system of the intelligent oil pump; the jacking control module includes synchronous start, synchronous stop, synchronous oil return control buttons and a display unit for the jacking force and stroke data of all jacks at each joint mouth; the jacking observation point displacement observation data analysis module is to analyze the longitudinal displacement of the pier top observation point along the bridge and the height difference and axial deviation data of each joint mouth in real time and hang them to the corresponding position on the digital twin, which can be visualized in real time in the digital twin space. The relevant data of the jacking process can be controlled in a quantified manner; the risk prevention and control early warning module is used to monitor whether the jacking jack forces of each joint are balanced during the jacking process. When an abnormal sudden change in the jacking force of a certain jack exceeds the threshold, an early warning is issued immediately and the oil return pressure is automatically coordinated to avoid the bridge body from being cracked and damaged by the unbalanced force jacking; the abnormal correction module monitors the height difference and axial deviation data of each joint in real time. When the threshold value specified in the specification is exceeded, the jacking is stopped in the graded jacking observation stage, and the progressive unbalanced jacking control principle is adopted according to the deviation situation to try the correction control, and a correction task controlled by the jack stroke is created through the correction data input window, and a real-time millimeter-level jacking correction task is started with one button. After one jacking, the data is automatically observed and analyzed synchronously, and it is repeated many times until the correction control is completed. After the correction is completed, it returns to the jacking control module to continue the graded jacking; The described fully automatic monitoring panel for concrete pouring counterweight loading and adjustment is a panel that connects the data of each closure to the corresponding digital twin in the digital twin space during the process of concrete pouring counterweight loading and adjustment, and can perform visual global monitoring to facilitate the deployment of concrete pumping command, including the total amount and progress of concrete pouring at each closure, the unloading mass of water counterweights on one side and both sides of each closure and the mass of remaining counterweights, the stress calculation value of the root of the T-structure, the unbalanced pouring deviation value of adjacent closure sections, and the stress deviation value on both sides of the root of the T-structure; at the same time, important indicator data of the pouring progress of each closure are synchronously displayed on both sides of the display interface of the digital twin space.

7. The control method of the bridge steel web water transportation and hoisting system based on digital twin according to claim 1 is characterized by: The intelligent equipment deployment and installation is to take a closure as a deployment unit, and to deploy and install the environment and temperature deformation and displacement data acquisition device of the closure section, the closure top-pushing and its deformation and displacement observation equipment, and the intelligent load adjustment equipment for concrete pouring counterweight at each closure, and then install the closure section centralized control platform and other data processing and transmission equipment to form a three-level intelligent control system of closure closure site intelligent equipment-closure section centralized control platform-remote digital twin intelligent control platform; The environment and temperature deformation displacement data acquisition device of the joint section is arranged and installed by arranging a temperature meter and an anemometer on each joint mouth, and at least one set of three-way displacement monitoring devices of the joint section is symmetrically installed along the bridge axis, the temperature meter is installed in the control cabinet of the joint section centralized control platform, and the anemometer is connected and fixed to the side of the control cabinet of the joint section centralized control platform with a vertical pole; The arrangement and installation of the joint jacking and deformation displacement observation equipment is to arrange a group of intelligent oil pump equipment on each joint mouth, one intelligent oil pump is equipped with 2 or 4 jacks at the same time, the jacks are connected with the force transmission rods and pressed against the cross section of the joint section, and 4 prisms for measuring the spatial coordinates of the observation points are arranged at the four corners of the joint mouth, and the measurement robots are arranged according to the measurement site conditions at the bridge construction site with the goal of covering all observation points; The layout and installation of the concrete pouring counterweight intelligent load adjustment equipment is to symmetrically arrange several water tanks on both sides of each joint according to the counterweight requirements. The water tanks are connected in parallel to form a communicating vessel and connected to a magnetic flap level gauge for monitoring the water level of the water tank. A water pump is installed at the water outlet end, and a solenoid valve and an electromagnetic flowmeter are installed on the water outlet pipe in front of the water pump to stop water discharge and monitor the volume of water discharge respectively; at each joint section, an electromagnetic flowmeter is installed on the concrete pump pipe to detect the volume of concrete pumped in; the stress sensor equipment at the root of the T-structure is pre-buried in the early stage and can read data directly in the cloud database; the loading of the water tank water counterweight is carried out through the external water supply system, and the water counterweight loading at both ends of each T-structure is kept balanced and synchronously loaded, according to the planned counterweight, and converted into the corresponding water level. When the water is loaded to the target height, the relevant personnel will stop the water injection according to the prompt that the water level is in place, and there is no need to wait all the time; The layout and installation of the closure section centralized control platform is to install an integrated electrical cabinet on each closure opening, which is wired to other electrical equipment; The remote digital twin intelligent control platform is deployed in the bridge construction monitoring center and uses wireless communication to exchange data with the closure section centralized control platform.

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