Construction control method and system for concrete silo in high temperature environment

Abstract

The application discloses a concrete silo construction control method and system in a high-temperature environment, and relates to the field of building construction. The method comprises the following steps: obtaining a silo construction plan, deploying a rigid temperature limiter and connecting it with a thermal stress field by taking the damage of the constitutive equation and the elastic-plastic principle as constraints; adding secondary mixing and admixtures as a first adjustment method, and taking dynamic adjustment of the pouring specification mode as a second adjustment method to develop an adjustment block in the construction control system; updating the thermal stress field by laying out a temperature sensing array, making temperature overrun judgment by the rigid temperature limiter, and making construction process adjustment and decision based on the adjustment block, and responding to the front-end equipment for construction control. The technical problem that the existing concrete silo construction control cannot accurately monitor and dynamically adjust the concrete temperature is solved, and the technical effects of improving the accuracy of concrete temperature monitoring and the timeliness of adjustment are achieved.

Description

Technical Field

[0001] This application relates to the field of building construction, and in particular to methods and systems for controlling the construction of concrete silos in high-temperature environments. Background Technology

[0002] Concrete silo construction in high-temperature environments presents significant challenges, as temperature substantially affects concrete performance and the construction process, making it crucial to ensure construction quality and structural safety. Current methods primarily address this issue through conventional temperature control measures, such as timely construction scheduling and pre-cooling of raw materials, while relying on manual temperature monitoring and adjustment based on experience. However, these methods lack precise temperature monitoring and dynamic adjustment mechanisms, making it difficult to accurately grasp concrete temperature changes during construction and enabling timely and effective adjustments to the construction process. This leads to quality problems such as temperature cracks in the concrete, impacting the overall performance and service life of the silo structure.

[0003] Currently, the relevant technologies for concrete silo construction control face technical challenges in accurately monitoring and dynamically adjusting concrete temperature. Summary of the Invention

[0004] This application provides a method and system for controlling the construction of concrete silos in high-temperature environments. It employs methods such as acquiring silo construction plans, deploying rigid temperature limiters based on constitutive damage and elasto-plastic principles, and establishing a connection with the thermal stress field formed by the mixing, conveying, and pouring spaces. Two adjustment methods are used: adding secondary mixing and admixtures, and dynamically adjusting pouring specifications. An adjustment block is developed in the construction control system, a temperature sensor array is deployed to update the thermal stress field, the rigid temperature limiter is used to determine temperature exceedances, and construction progress adjustment decisions are made based on the adjustment block. Through technical means such as construction control implemented using front-end equipment such as mixing plants and concrete placing booms, the system achieves the technical effect of improving the accuracy of concrete temperature monitoring and the timeliness of adjustment.

[0005] This application provides a method for construction control of concrete silos under high-temperature environments, comprising: acquiring a silo construction plan; deploying a rigid temperature limiter and establishing a connection with a thermal stress field, constrained by constitutive damage and elastoplastic principles; wherein the thermal stress field is composed of a mixing space, a conveying space, and a pouring space; developing an adjustment block in the construction control system by using secondary mixing and admixtures as a first adjustment method and dynamic adjustment of pouring specifications as a second adjustment method; updating the thermal stress field by deploying a temperature sensor array; using the rigid temperature limiter to determine temperature exceedances and making construction progress adjustment decisions based on the adjustment block; and responding to front-end equipment for construction control; wherein the mixing plant is the first adjustment front-end equipment and the concrete placing boom is the second adjustment front-end equipment.

[0006] In one possible implementation, a rigid temperature limiter is deployed, and the following processes are performed: a first limit temperature is set for the outlet end of the mixing plant; a second limit temperature is set for the outlet end of the delivery pump; and the rigid temperature limiter is deployed based on the first limit temperature and the second limit temperature.

[0007] In one possible implementation, the following process is performed: the rigid temperature limiter is deployed at the outlet end of the mixing plant, and at the outlet end of the delivery pump.

[0008] In a possible implementation, the following processing is performed: deploying a temperature field using temperature data for the mixing space-conveying space-pouring space; introducing thermal stress data from the pouring space, deploying the temperature field, and determining the thermal stress field.

[0009] In a possible implementation, the rigid temperature limiter is used to determine temperature exceedance and make construction progress adjustment decisions based on the adjustment block, and the following processing is performed: the thermal stress field is updated in real time according to the temperature sensor array; the outlet end of the mixing plant is determined to exceed the limit based on the first limit temperature; when the first limit temperature exceeds the limit, the rigid temperature limiter is triggered to generate a first adjustment command, wherein the first adjustment command is a control trigger command based on the first adjustment mode.

[0010] In a possible implementation, after generating the first adjustment command, the following processing is performed: with the first temperature over-limit value as the adjustment amount, and with the stirring parameters and admixture data as the decision target, an adjustment decision is performed based on the adjustment block to determine a first adjustment strategy; the first adjustment strategy responds to the mixing station and executes stirring control drive.

[0011] In a possible implementation, the rigid temperature limiter is used to determine temperature exceedance and make construction progress adjustment decisions based on the adjustment block, and the following processing is performed: as the mixture is conveyed, the outlet end of the conveying pump is determined to exceed the limit based on the second limit temperature; when the limit of the second limit temperature is exceeded, the rigid temperature limiter is triggered to generate a second adjustment command, wherein the second adjustment command is a control trigger command based on the second adjustment mode.

[0012] In a possible implementation, after generating the second adjustment command, the following processing is performed: with the second temperature limit exceeding the adjustment value as the adjustment amount, and with the geometric parameters and pouring speed of the single pouring zone as the decision target, an adjustment decision is performed based on the adjustment block to determine the second adjustment strategy; the second adjustment strategy responds to the concrete placing machine and executes the pouring control drive; wherein, the station is synchronously triggered to coordinate with the concrete placing machine to perform wiring positioning constraints based on the second adjustment strategy.

[0013] In possible implementations, the following processing is also performed: after a single pour is completed, based on the thermal stress data and temperature data of the pouring space, a time-series data fluctuation analysis and distribution balance analysis of the curing process are conducted to determine the analysis results; based on the analysis results, cooling control management is performed.

[0014] This application also provides a construction control system for concrete silos under high-temperature environments, comprising: a rigid temperature limiter deployment module for acquiring silo construction plans, deploying rigid temperature limiters and establishing connections with a thermal stress field based on constitutive damage and elastoplastic principles, wherein the thermal stress field is composed of a mixing space, a conveying space, and a pouring space; an adjustment block development module for developing adjustment blocks in the construction control system using secondary mixing and admixtures as a first adjustment method and dynamic adjustment of pouring specifications as a second adjustment method; and a construction control module for updating the thermal stress field by deploying a temperature sensor array, using the rigid temperature limiter to determine temperature exceedances and making construction progress adjustment decisions based on the adjustment blocks, and responding to front-end equipment for construction control, wherein the mixing plant is the first adjustment front-end equipment and the concrete placing boom is the second adjustment front-end equipment.

[0015] The proposed method and system for controlling the construction of concrete silos under high-temperature environments first obtains the silo construction plan. Constrained by constitutive damage and elasto-plastic principles, a rigid temperature limiter is deployed and connected to a thermal stress field, which is composed of a mixing space, a conveying space, and a pouring space. Then, secondary mixing and admixtures are added as a first adjustment method, and dynamic adjustment of pouring specifications is used as a second adjustment method. Adjustment blocks are developed in the construction control system. Finally, the thermal stress field is updated by deploying a temperature sensor array. The rigid temperature limiter determines temperature exceedances and makes construction progress adjustment decisions based on the adjustment blocks, responding to front-end equipment for construction control. The mixing plant is the first adjustment front-end equipment, and the concrete placing boom is the second adjustment front-end equipment. This achieves the technical effect of improving the accuracy of concrete temperature monitoring and the timeliness of adjustment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Flowcharts are used in this application to illustrate the operations performed by the system according to the embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed precisely in sequence. Instead, various steps can be processed in reverse order or simultaneously as needed. Furthermore, other operations can be added to these processes, or one or more steps can be removed from these processes.

[0017] Figure 1 A schematic flowchart illustrating the construction control method for concrete silos in high-temperature environments provided in this application embodiment.

[0018] Figure 2 This is a schematic diagram of the structure of a concrete silo construction control system under high temperature environment provided in an embodiment of this application.

[0019] Explanation of reference numerals in the attached diagram: Rigid temperature limiter deployment module 10, regulating block development module 20, construction control module 30. Detailed Implementation

[0020] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application.

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description of this application will be provided in conjunction with the accompanying drawings. The described embodiments should not be considered as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In the following description, references to "some embodiments" describe a subset of all possible embodiments. However, it is understood that "some embodiments" can be the same or different subsets of all possible embodiments and can be combined with each other without conflict. The terms "first" and "second" are used merely to distinguish similar objects and do not represent a specific ordering of objects. The terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or modules not explicitly listed or inherent to these processes, methods, products, or devices. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only.

[0023] This application provides a method for controlling the construction of concrete silos in high-temperature environments, such as... Figure 1 As shown, the method includes:

[0024] Step S100: Obtain the silo construction plan, and deploy a rigid temperature limiter and establish a connection with the thermal stress field based on constitutive damage and elastoplastic principle. The thermal stress field is composed of a mixing space, a conveying space, and a pouring space.

[0025] Specifically, using professional Building Information Modeling (BIM) software such as Revit and ArchiCAD, design drawings and construction parameters of the silos are imported, including information such as the silo's height, diameter, wall thickness, and concrete strength grade, to generate detailed construction planning documents, including construction schedules, material usage, and equipment configuration. Based on the material properties of concrete, a three-dimensional elastoplastic damage constitutive model is established. This model is based on Helmholtz free energy and elastoplastic damage energy release rate, conforming to basic thermodynamic principles. Through experiments or numerical simulations, the changes in the microstructure of concrete under high-temperature conditions are analyzed, such as the increase in internal stress due to accelerated cement hydration and the thermal expansion of aggregates. Numerical simulations determine the damage threshold of concrete at different temperatures. For example, when the temperature exceeds 60℃, the number of microcracks inside the concrete increases significantly, and the damage factor rises significantly. The changes in the elastic modulus of concrete at high temperatures are analyzed. For example, when the temperature rises from 20℃ to 40℃, the elastic modulus of concrete may decrease by 20%. The plastic flow of concrete under thermal stress is determined. For example, the Concrete Damage Plasticity Model (CDP) in ABAQUS is used to describe the degree of concrete damage through damage factors. Combined with the evolution rules of damage variables, an elastoplastic model is established to predict the deformation of concrete at high temperatures. Rigid temperature limiters are installed at key locations in the mixing, conveying, and pouring spaces, such as at the mixer outlet, the middle of the concrete conveying pipeline, and near the pouring point. The rigid temperature limiter consists of a high-precision temperature sensor (such as a Pt100 resistance thermometer) and a rigid shell, capable of monitoring the concrete temperature in real time and issuing an alarm when the temperature exceeds a set limit (such as 55°C). The rigid temperature limiter is connected to the construction control system via a wireless communication module (such as LoRa or Wi-Fi) or a wired data transmission line, transmitting temperature data to the control center in real time. Simultaneously, a thermal stress field model is established at the control center, dynamically calculating changes in the thermal stress field based on the concrete temperature distribution and construction progress. The thermal stress field is a physical field describing the distribution of thermal stress within the concrete, reflecting the stress state of the concrete under temperature changes and construction loads.

[0026] For example, suppose a concrete silo is being constructed in a high-temperature environment with an ambient temperature of 40°C. Construction personnel import the silo's design drawings into BIM software, determining the silo's height to be 30 meters, diameter to be 10 meters, wall thickness to be 0.5 meters, and concrete strength grade to be C30. Based on constitutive damage and elastoplastic principles, a three-dimensional elastoplastic damage constitutive model is established. Experiments show that when the temperature exceeds 60°C, the number of microcracks inside the concrete increases significantly, with the damage factor rising from 0.1 to 0.3. The elastic modulus decreases from 32500 MPa to 26000 MPa. Rigid temperature limiters are installed at the mixer outlet, the middle of the conveying pipeline, and near the pouring point, with a temperature limit set at 55°C. When the concrete temperature reaches 55°C, the rigid temperature limiter issues an alarm and transmits the temperature data to the construction control system. The construction control system dynamically calculates the distribution of the thermal stress field based on the temperature data and the constitutive model. For example, during pouring, if the concrete surface temperature is 50°C and the internal temperature is 52°C, the thermal stress field model shows an internal thermal stress of 10 MPa. If the temperature continues to rise, the construction control system will automatically adjust the construction parameters, such as reducing the discharge temperature of the mixing plant or adjusting the pouring speed of the concrete placing boom.

[0027] In one possible implementation, a rigid temperature limiter is deployed, and step S100 further includes step S110, setting a first limit temperature for the outlet end of the mixing plant; step S120, setting a second limit temperature for the outlet end of the delivery pump; and step S130, deploying the rigid temperature limiter according to the first limit temperature and the second limit temperature, placing the rigid temperature limiter at the outlet end of the mixing plant and the outlet end of the delivery pump.

[0028] Specifically, to prevent concrete performance degradation due to high temperatures during mixing, it is necessary to ensure that the concrete temperature at the batching plant outlet does not exceed a set safety threshold. A rigid temperature limiter is installed at the batching plant outlet, with a first limit temperature set (e.g., 50°C). This temperature is determined based on the material properties of the concrete and construction requirements. The rigid temperature limiter uses a high-precision temperature sensor (e.g., a Pt100 resistance thermometer) to monitor the concrete temperature in real time and issue an alarm when the temperature exceeds the set value. Temperature data is transmitted in real time to the construction control system via a wireless communication module (e.g., LoRa) to ensure that construction personnel are promptly aware of temperature changes.

[0029] During the process from the batching plant to the pump outlet, the concrete temperature can fluctuate due to factors such as ambient temperature. Therefore, a second temperature limit is needed to ensure temperature control during transport. A rigid temperature limiter is installed at the pump outlet, with a second temperature set (e.g., 55°C). This temperature takes into account the temperature changes of the concrete during transport. The rigid temperature limiter monitors the concrete temperature using a temperature sensor and issues an alarm when the temperature exceeds the set value, simultaneously transmitting the data to the construction control system. Based on the temperature data, the construction control system can automatically adjust the batching plant's discharge temperature (e.g., by increasing the amount of ice or low-temperature water) or the conveying speed to ensure the concrete temperature remains within a controllable range.

[0030] In one possible implementation, step S100 further includes step S140, deploying a temperature field using temperature data for the mixing space-conveyor space-pouring space. Specifically, temperature data is collected in real time in the mixing space, conveyor space, and pouring space using an array of temperature sensors. A temperature field model is established using finite element analysis software (such as ANSYS APDL), and the collected temperature data is input into the model as boundary and initial conditions. Material properties (such as the thermal conductivity and specific heat capacity of concrete) are defined, and thermal boundary conditions (such as convective heat transfer and thermal radiation) are set according to the actual construction environment. The construction area is discretized using a meshing tool (such as the meshing function in ANSYS APDL) to ensure that the mesh quality accurately reflects the temperature distribution. Appropriate mesh size and shape are set to adapt to the geometric features of different spaces. The temperature field simulation is run using heat conduction equations (such as...) ,in, Let α represent the partial derivative of temperature T with respect to time t, and let α represent the thermal diffusivity of the material. The Laplace operator is used to calculate the temperature distribution. During the simulation, the temperature data is dynamically updated to ensure the real-time performance and accuracy of the temperature field.

[0031] Step S150: Introduce thermal stress data from the casting space, deploy the temperature field, and determine the thermal stress field. Specifically, thermal stress data is collected in real time in the casting space using strain gauges or other stress sensors. The collected thermal stress data is combined with temperature data to analyze the relationship between thermal stress and temperature. In ANSYS APDL, the temperature field simulation results are used as input conditions for thermal stress analysis. Define coupling analysis steps (such as thermo-solid coupling analysis) to ensure that the interaction between the temperature field and the stress field can be accurately simulated. Set appropriate coupling analysis parameters, such as increment step size and convergence criteria. Run the coupling analysis to calculate the distribution of the thermal stress field. Generate a thermal stress distribution cloud map using post-processing tools (such as the post-processing module of ANSYS APDL) to visually display the distribution of thermal stress.

[0032] For example, the temperature data collected by temperature sensors in the mixing space is 40℃; in the conveying space, the temperature data is 45℃; and in the casting space, the temperature data is 50℃. A temperature field model is established using ANSYS APDL, and these temperature data are input as boundary conditions to the model for temperature field simulation. In the casting space, the thermal stress data collected by strain gauges is 10MPa. These thermal stress data are combined with the temperature data for thermal stress analysis. In ANSYS APDL, a thermo-solid coupling analysis step is set up. After running the coupling analysis, a thermal stress distribution cloud map is generated, revealing that the stress concentration area in the casting space is mainly concentrated at the bottom of the silo wall. Based on these analysis results, construction parameters can be adjusted, such as reducing the discharge temperature of the mixing plant or adjusting the casting speed, to ensure construction quality.

[0033] Step S200 involves using secondary mixing and admixtures as the first adjustment method and dynamic adjustment of casting specifications as the second adjustment method, and developing an adjustment block in the construction control system.

[0034] Specifically, the first adjustment method refers to setting up a secondary mixing device during the concrete transportation process. After the concrete is transported from the batching plant to the construction site, it is mixed a second time before pouring. This secondary mixing device can be a small mixer or mixing blades installed in the concrete delivery pipeline. By adjusting the mixing speed and time, the temperature and uniformity of the concrete are achieved as required. Based on the concrete temperature and construction requirements, appropriate admixtures, such as retarders and water-reducing agents, are selected. Retarders can extend the setting time of the concrete, allowing sufficient time for transportation and pouring in high-temperature environments; water-reducing agents can reduce the water consumption of the concrete, improving its strength and durability. An automatic metering device accurately adds the admixtures to the concrete according to a set ratio.

[0035] The second adjustment method refers to adjusting the pouring specifications and patterns in real time according to changes in the thermal stress field and the construction progress. For example, when the temperature is high, the thickness of the pouring layer is appropriately reduced and the pouring frequency is increased to reduce the accumulation of heat inside the concrete; during the pouring process, the placing speed and range of the concrete placing machine are adjusted according to the temperature and fluidity of the concrete to ensure uniform distribution of the concrete.

[0036] The adjustment block is the area in the construction control system used to control front-end equipment such as the mixing plant and the concrete placing boom. The adjustment block is developed within the construction control system to achieve two adjustment methods: a first adjustment mode (secondary mixing and admixture addition) and a second adjustment mode (dynamic adjustment of pouring specifications). Specifically, the hardware configuration includes a sensor network, actuators, and communication modules. Temperature, humidity, and pressure sensors are installed in the mixing plant, conveying pipelines, and pouring area to collect real-time concrete status data. A variable frequency speed control device for the mixer, an automatic admixture addition device, and a control device for the concrete placing boom are configured. Wireless communication modules (such as LoRa or Wi-Fi) or wired Ethernet are used to connect the sensors and actuators to the central control system. The software architecture includes a data acquisition layer, a control logic layer, and a user interface layer. The data acquisition layer is responsible for collecting data from sensors and transmitting it to the central control system. The control logic layer calculates and outputs control commands based on preset control strategies and real-time data. The user interface layer provides an interactive interface for operators to monitor and manually intervene.

[0037] Step S300: By deploying a temperature sensor array, the thermal stress field is updated, and the rigid temperature limiter is used to determine temperature exceedance and make construction progress adjustment decisions based on the adjustment block. Construction control is carried out in response to the front-end equipment, wherein the mixing plant is the first adjustment front-end equipment and the concrete placing machine is the second adjustment front-end equipment.

[0038] Specifically, in the construction area of ​​the concrete silo, an array of temperature sensors is deployed at specific intervals and layers. These temperature sensors, which can be thermocouples, fiber optic sensors, or wireless sensors, can monitor temperature changes inside and on the surface of the concrete in real time. The data collected by the temperature sensors is transmitted to the construction control system via a data acquisition module. Based on the temperature data collected by the temperature sensor array and combined with a thermal stress field model, the construction control system dynamically updates the distribution of the thermal stress field. Numerical simulation methods are then used to calculate the changes in thermal stress inside the concrete and predict potential damage such as cracks.

[0039] A rigid temperature limiter monitors the concrete temperature in real time and issues an alarm signal when the temperature exceeds the set limit. Simultaneously, the construction control system performs a comprehensive analysis of the concrete temperature based on data from the temperature sensor array to determine if any temperature anomalies exist. Based on the temperature exceedance and the distribution of the thermal stress field, the construction control system automatically makes decisions to adjust the construction process. For example, when the temperature is too high, it can adjust the concrete discharge temperature at the mixing plant by regulating the control blocks, or adjust the pouring speed of the concrete placing boom.

[0040] As the first regulating front-end equipment, the batching plant adjusts parameters such as concrete mix proportions, mixing time, and water temperature according to instructions from the construction control system. For example, when it is necessary to lower the concrete temperature, the amount of ice or low-temperature water is increased; when it is necessary to increase the concrete strength, the ratio of cement to aggregate is adjusted. As the second regulating front-end equipment, the concrete placing boom adjusts the placing speed, placing range, and pouring sequence according to instructions from the construction control system. For example, when the temperature is high, the placing speed is increased to reduce the temperature rise of the concrete during transportation; when the pouring area is large, the placing range is adjusted to ensure uniform distribution of concrete.

[0041] This application's embodiment adopts the acquisition of silo construction planning, deploys rigid temperature limiters based on constitutive damage and elasto-plastic principles, and establishes a connection with the thermal stress field formed by the mixing, conveying, and pouring spaces. It uses two adjustment methods: adding secondary mixing and admixtures, and dynamically adjusting the pouring specifications. An adjustment block is developed in the construction control system, a temperature sensor array is deployed to update the thermal stress field, the rigid temperature limiter is used to determine temperature exceedances, and construction progress adjustment decisions are made based on the adjustment block. Through technical means such as construction control implemented by front-end equipment such as mixing plants and concrete placing booms, the technical effect of improving the accuracy of concrete temperature monitoring and the timeliness of adjustment is achieved.

[0042] In one possible implementation, the rigid temperature limiter is used for temperature exceedance determination and construction progress adjustment decisions based on the adjustment block. Step S300 further includes step S310, updating the thermal stress field in real time according to the temperature sensor array. Specifically, a temperature sensor array is deployed in the construction area (mixing space, conveying space, pouring space) to collect concrete temperature data in real time. The collected temperature data is transmitted to the data acquisition layer of the construction control system. The thermal stress field model in the construction control system is dynamically updated according to the real-time temperature data to calculate the distribution of the thermal stress field.

[0043] Step S320: An over-limit determination is performed at the outlet of the mixing plant based on the first limit temperature. Specifically, a rigid temperature limiter is installed at the outlet of the mixing plant, and a first limit temperature (e.g., 50°C) is set. The rigid temperature limiter monitors the concrete temperature at the outlet of the mixing plant in real time and compares the current temperature with the first limit temperature. If the current temperature exceeds the first limit temperature, the rigid temperature limiter triggers an over-limit determination and records the over-limit status.

[0044] Step S330: When the first limit temperature is exceeded, the rigid temperature limiter is triggered, generating a first adjustment command. This first adjustment command is a control trigger command based on a first adjustment method. Specifically, when the rigid temperature limiter determines that the temperature has exceeded the limit, it sends an exceedance signal to the construction control system. After receiving the exceedance signal, the construction control system generates the first adjustment command according to preset control logic. The first adjustment command is based on the first adjustment method (secondary mixing and admixture addition), including: adjusting the secondary mixing device of the mixing plant, increasing the mixing time or changing the mixing speed to reduce the concrete temperature; and adding an appropriate amount of retarder or water-reducing agent to the concrete through an automatic metering device to improve the concrete's performance. The first adjustment command is then sent to the corresponding execution equipment (such as a mixer or admixture addition device) to execute the adjustment operation.

[0045] For example, the first limit temperature set at the outlet of the batching plant is 50℃. The temperature sensor array monitors the concrete temperature at the outlet in real time and finds it to be 52℃, exceeding the first limit temperature. The rigid temperature limiter triggers an over-limit judgment and sends an over-limit signal to the construction control system. Upon receiving the signal, the construction control system generates a first adjustment command, instructing the secondary mixing device of the batching plant to increase the mixing time by 10 minutes and to add an appropriate amount of retarder to the concrete via an automatic metering device. Upon receiving the command, the mixing device and the admixture adding device execute the corresponding adjustment operations to ensure that the concrete temperature and performance meet the construction requirements.

[0046] In one possible implementation, after generating the first adjustment command, step S300 further includes step S340, which uses the first temperature exceedance value as the adjustment amount, and the stirring parameters and admixture data as the decision targets, to perform an adjustment decision based on the adjustment block and determine a first adjustment strategy. Specifically, when the rigid temperature limiter detects that the temperature at the outlet of the mixing station exceeds the first limit temperature, the exceedance value is recorded. For example, if the first limit temperature is 50°C and the actual temperature is 52°C, then the exceedance value is 2°C. Using the exceedance value (2°C) as the adjustment amount, the adjustment measures to be taken are determined. For example, according to preset control logic, for every 1°C exceeding the limit, the stirring time is increased by 5 minutes, and the admixture addition amount is increased by 0.1%.

[0047] The decision-making process is based on mixing parameters and admixture data. Mixing parameters include mixing speed, mixing time, and mixing direction. For example, increasing the mixing speed from 50 rpm to 60 rpm and the mixing time from 10 minutes to 15 minutes. Admixture data includes the type and dosage of admixtures. For example, adding a retarder to extend setting time and adding a water-reducing agent to reduce water consumption.

[0048] The construction control system generates a first adjustment command based on the exceeded limit value and the preset control logic. For example, the system instructs the secondary mixing unit of the batching plant to increase the mixing time by 5 minutes and adds 0.1% retarder to the concrete through an automatic metering device.

[0049] In step S350, the first adjustment strategy responds to the mixing plant by executing mixing control drive. Specifically, after receiving the first adjustment command, the mixing plant adjusts the mixing speed via a frequency converter and the mixing time via a timer. For example, the mixing speed increases from 50 rpm to 60 rpm, and the mixing time increases from 10 minutes to 15 minutes. The automatic metering device precisely controls the amount of admixture added according to the adjustment command. For example, 0.1% retarder is added to the concrete. The temperature sensor of the mixing plant monitors the temperature of the concrete after mixing in real time and feeds the data back to the construction control system. If the temperature still does not meet the requirements, the system continues to adjust the mixing parameters or the amount of admixture added until the temperature meets the construction requirements.

[0050] In one possible implementation, the rigid temperature limiter is used for temperature over-limit determination and construction progress adjustment decisions based on the adjustment block. Step S300 further includes step S360, where, as the mixture is conveyed, an over-limit determination based on the second limit temperature is performed at the outlet of the conveying pump. Specifically, a rigid temperature limiter is installed at the outlet of the conveying pump, and a second limit temperature (e.g., 55°C) is set. The rigid temperature limiter monitors the concrete temperature at the outlet of the conveying pump in real time and compares the current temperature with the second limit temperature. If the current temperature exceeds the second limit temperature, the rigid temperature limiter triggers an over-limit determination. The system records the over-limit value (e.g., if the current temperature is 57°C, the over-limit value is 2°C).

[0051] Step S370: When the second limit temperature is exceeded, the rigid temperature limiter is triggered, generating a second adjustment command. This second adjustment command is a control trigger command based on a second adjustment mode. Specifically, when the rigid temperature limiter detects a temperature exceedance, it sends an exceedance signal to the construction control system. After receiving the signal, the construction control system generates a second adjustment command according to preset control logic. The second adjustment command is based on the second adjustment mode (dynamic adjustment of the pouring specification mode). For example, the command includes adjusting the pouring layer thickness, pouring frequency, and the material placement speed and range of the concrete placing machine.

[0052] Step S380: Using the second temperature exceedance value as the adjustment amount, and taking the geometric parameters and pouring speed of the single pouring zone as the decision targets, an adjustment decision is executed based on the adjustment block to determine the second adjustment strategy. Specifically, using the second temperature exceedance value (e.g., 2℃) as the adjustment amount, the adjustment measures to be taken are determined. For example, according to the preset control logic, for every 1℃ increase, the pouring layer thickness is reduced by 5cm, and the pouring frequency is increased by 1 time / hour.

[0053] The decision-making objectives are based on the geometric parameters and pouring speed of a single pouring zone. Geometric parameters refer to adjusting the geometric parameters of the single pouring zone, such as reducing the pouring layer thickness from 30cm to 25cm. Pouring speed refers to adjusting the pouring speed, such as increasing it from 3m³ / min to 4m³ / min.

[0054] The construction control system generates a second adjustment strategy based on the exceeded limit value and the preset control logic. The strategy includes adjusting the thickness of the pouring layer, the pouring frequency, and the placing speed of the concrete placing machine.

[0055] In step S390, the second adjustment strategy responds to the concrete placing boom and executes pouring control drive, wherein a station is synchronously triggered to coordinate with the concrete placing boom to perform wiring and positioning constraints based on the second adjustment strategy. Specifically, after receiving the second adjustment command, the concrete placing boom adjusts its placing speed and placing range. For example, the placing speed is increased from 3m³ / min to 4m³ / min, and the placing range is adjusted from 10m to 8m. The station is synchronously triggered to coordinate with the concrete placing boom to perform wiring and positioning constraints. The station adjusts the concrete placing boom's wiring path in real time according to the second adjustment strategy to ensure uniform concrete distribution. The concrete placing boom's temperature sensor monitors the concrete temperature in real time during the pouring process and feeds the data back to the construction control system. If the temperature still does not meet the requirements, the system continues to adjust the pouring parameters until the temperature meets the construction requirements.

[0056] In one possible implementation, the method further includes step S400: after a single pour is completed, based on the thermal stress and temperature data of the pouring space, a time-series data fluctuation analysis and distribution uniformity analysis of the curing process are performed to determine the analysis results. Specifically, in the pouring space, temperature and thermal stress data of the concrete are collected in real time using temperature sensors and strain gauges. The collected data is stored in the database of the construction control system to form time-series data.

[0057] Moving average analysis is used to process temperature data and eliminate high-frequency random errors. Statistical process control (SPC) techniques, such as X-Bar & R charts, are employed to analyze temperature data fluctuations. The standard deviation and coefficient of variation of the temperature data are calculated to assess the magnitude of temperature fluctuations.

[0058] Finite element analysis software (such as Midas Civil) is used to simulate and analyze thermal stress data to predict the distribution of thermal stress inside concrete. The uniformity of thermal stress distribution is analyzed to identify potential stress concentration areas.

[0059] Based on the results of data fluctuation analysis and distribution uniformity analysis, the temperature and thermal stress state during the concrete curing process are determined. For example, if the temperature fluctuation is large or the thermal stress distribution is uneven, cooling measures may be necessary.

[0060] Step S500: Based on the analysis results, cooling control management is implemented. Specifically, a cooling control strategy is formulated based on the analysis results. For example, if the temperature is too high or the thermal stress distribution is uneven, cooling water pipes can be pre-embedded for cooling. The arrangement of the cooling water pipes should be optimized according to the thermal stress distribution and temperature data to ensure uniform cooling effect. Cooling water pipes are pre-embedded in the concrete to reduce the internal temperature of the concrete through circulating water. Temperature sensors are used to monitor the internal temperature of the concrete in real time, and the flow rate of cooling water is automatically adjusted according to temperature changes. The construction control system dynamically adjusts the flow rate and temperature of the cooling water based on real-time monitoring data. If the temperature still does not meet the requirements, the system continues to adjust the cooling parameters until the temperature and thermal stress distribution meet the construction requirements.

[0061] For example, after a single pour, temperature and thermal stress data collected by temperature sensors and strain gauges showed significant internal temperature fluctuations and uneven thermal stress distribution within the concrete. Processing the temperature data using moving average analysis revealed a standard deviation of 3°C for the temperature fluctuations. Finite element analysis software was used to simulate the thermal stress distribution, finding that stress concentration areas were mainly concentrated at the bottom of the silo wall. Based on these analysis results, the construction control system decided to implement cooling control measures. Cooling water pipes were pre-embedded in the concrete to circulate water and lower the internal temperature. The arrangement of the cooling water pipes was optimized based on the thermal stress distribution and temperature data to ensure uniform cooling. The construction control system dynamically adjusted the flow rate and temperature of the cooling water based on real-time monitoring data. If the temperature still did not meet the requirements, the system continued to adjust the cooling parameters until the temperature and thermal stress distribution met the construction requirements.

[0062] In the above text, refer to Figure 1 A method for controlling the construction of concrete silos in a high-temperature environment according to an embodiment of the present invention is described in detail. Next, reference will be made to... Figure 2 A construction control system for concrete silos in a high-temperature environment is described according to an embodiment of the present invention.

[0063] The high-temperature concrete silo construction control system according to embodiments of the present invention addresses the technical problem of existing concrete silo construction control systems being unable to accurately monitor and dynamically adjust concrete temperature, thereby improving the accuracy of concrete temperature monitoring and the timeliness of adjustment. The high-temperature concrete silo construction control system includes: a rigid temperature limiter deployment module 10, an adjustment block development module 20, and a construction control module 30.

[0064] The rigid temperature limiter deployment module 10 is used to acquire the silo construction plan, deploy the rigid temperature limiter and establish a connection with the thermal stress field based on constitutive damage and elastoplastic principles, wherein the thermal stress field is composed of a mixing space, a conveying space and a pouring space; the adjustment block development module 20 is used to develop adjustment blocks in the construction control system by adding secondary mixing and admixtures as the first adjustment method and dynamic adjustment of the pouring specification mode as the second adjustment method; the construction control module 30 is used to update the thermal stress field by deploying a temperature sensor array, use the rigid temperature limiter to determine temperature exceedance and make construction progress adjustment decisions based on the adjustment blocks, and respond to the front-end equipment for construction control, wherein the mixing plant is the first adjustment front-end equipment and the concrete placing machine is the second adjustment front-end equipment.

[0065] The specific configuration of the rigid temperature limiter deployment module 10 will be described in detail below. As mentioned above, the rigid temperature limiter deployment module 10 may further include: a first limit temperature setting unit for setting a first limit temperature for the outlet end of the mixing plant; a second limit temperature setting unit for setting a second limit temperature for the outlet end of the delivery pump; and a rigid temperature limiter deployment unit for deploying the rigid temperature limiter according to the first limit temperature and the second limit temperature.

[0066] The rigid temperature limiter deployment unit may further include: deploying the rigid temperature limiter at the outlet end of the mixing plant, and at the outlet end of the delivery pump.

[0067] The rigid temperature limiter deployment module 10 may further include: a temperature field deployment unit for deploying a temperature field based on temperature data for the mixing space-conveying space-pouring space; and a thermal stress field determination unit for introducing thermal stress data from the pouring space, deploying the temperature field, and determining the thermal stress field.

[0068] The specific configuration of the construction control module 30 will be described in detail below. As mentioned above, the construction control module 30 may further include: a thermal stress field update unit for real-time updating of the thermal stress field based on the temperature sensing array; a first limit judgment unit for determining the limit at the outlet of the mixing plant based on the first limit temperature; and a first adjustment command generation unit for triggering the rigid temperature limiter and generating a first adjustment command when the first limit temperature is exceeded, wherein the first adjustment command is a control trigger command based on a first adjustment mode.

[0069] After generating the first adjustment command, the construction control module 30 may further include: a first adjustment strategy determination unit, which is used to determine the first adjustment strategy by using the first temperature limit as the adjustment amount, the mixing parameters and admixture data as the decision targets, and performing adjustment decisions based on the adjustment block; and a mixing control unit, which is used to execute mixing control drive in response to the first adjustment strategy in the mixing station.

[0070] The construction control module 30, which uses the rigid temperature limiter to determine temperature exceedances and makes construction progress adjustment decisions based on the adjustment block, may further include: a second exceedance determination unit for determining exceedances at the outlet of the conveying pump based on the second limit temperature as the mixture is conveyed; and a second adjustment command generation unit for triggering the rigid temperature limiter and generating a second adjustment command when the exceedance of the second limit temperature is met, wherein the second adjustment command is a control trigger command based on the second adjustment mode.

[0071] After generating the second adjustment command, the construction control module 30 may further include: a second adjustment strategy determination unit, which uses the second temperature limit as the adjustment amount, the geometric parameters of the single pouring zone and the pouring speed as the decision target, and performs adjustment decision based on the adjustment block to determine the second adjustment strategy; and a pouring control unit, which responds to the concrete placing machine in response to the second adjustment strategy and executes the pouring control drive, wherein the station is synchronously triggered to coordinate with the concrete placing machine to perform wiring positioning constraints based on the second adjustment strategy.

[0072] The system may further include: a curing process analysis module for performing time-series data fluctuation analysis and distribution balance analysis of the curing process based on the thermal stress data and temperature data of the pouring space after a single pour, and determining the analysis results; and a cooling control management module for performing cooling control management based on the analysis results.

[0073] The high-temperature environment concrete silo construction control system provided in the embodiments of the present invention can execute the high-temperature environment concrete silo construction control method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0074] Although this application makes various references to certain modules in the system according to the embodiments of this application, any number of different modules can be used and run on user terminals and / or servers. The various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of each functional unit are only for easy distinction between each other and are not used to limit the scope of protection of this invention.

[0075] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application. In some cases, the actions or steps described in this application can be performed in a different order than that shown in the embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require a specific or sequential order to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

Claims

1. A method for construction control of concrete silos under high-temperature environments, characterized in that, The method includes: Obtain the silo construction plan, constrained by constitutive damage and elastoplastic principles, deploy a rigid temperature limiter and establish a connection with the thermal stress field, wherein the thermal stress field is composed of a mixing space, a conveying space and a pouring space; The first adjustment method is to add secondary mixing and admixtures, and the second adjustment method is to dynamically adjust the pouring specifications. An adjustment block is developed in the construction control system. By deploying a temperature sensor array, the thermal stress field is updated, and the rigid temperature limiter is used to determine temperature exceedances and make construction progress adjustment decisions based on the adjustment block, thereby responding to the front-end equipment for construction control. Among them, the mixing plant is the first regulating front-end equipment, and the concrete placing machine is the second regulating front-end equipment; For the aforementioned mixing space-conveying space-pouring space, a temperature field is deployed based on temperature data; By introducing thermal stress data from the pouring space, the temperature field is deployed, and the thermal stress field is determined. The process of determining temperature exceedances using the rigid temperature limiter and making construction progress adjustment decisions based on the adjustment block includes: As the mixed materials are conveyed, an over-limit determination is made at the outlet of the conveying pump based on the second limit temperature. When the second limit temperature is exceeded, the rigid temperature limiter is triggered to generate a second adjustment command, wherein the second adjustment command is a control trigger command based on the second adjustment mode; After generating the second adjustment command, it includes: The second temperature limit is used as the adjustment amount, and the geometric parameters and pouring speed of a single pouring zone are used as the decision targets. Based on the adjustment block, the adjustment decision is executed to determine the second adjustment strategy. The second adjustment strategy responds to the concrete placing machine and executes the pouring control drive; Among them, the synchronously triggered station instrument coordinates with the concrete placing machine to perform wiring positioning constraints based on the second adjustment strategy; The rigid temperature limiter includes: A first limit temperature is set at the outlet of the mixing plant; A second limit temperature is set for the outlet end of the delivery pump; The rigid temperature limiter is deployed according to the first limit temperature and the second limit temperature.

2. The construction control method for concrete silos under high-temperature environments as described in claim 1, characterized in that, The rigid temperature limiter is deployed at the outlet end of the mixing plant, and at the outlet end of the delivery pump.

3. The method for construction control of concrete silos under high-temperature environments as described in claim 1, characterized in that, The process of determining temperature exceedances using the rigid temperature limiter and making construction progress adjustment decisions based on the adjustment block includes: The thermal stress field is updated in real time based on the temperature sensing array; An over-limit determination is made at the outlet end of the mixing plant based on the first limit temperature; When the first limit temperature is exceeded, the rigid temperature limiter is triggered to generate a first adjustment command, wherein the first adjustment command is a control trigger command based on the first adjustment mode.

4. The construction control method for concrete silos under high-temperature environments as described in claim 3, characterized in that, After generating the first adjustment command, the following is included: Using the first temperature limit exceedance value as the adjustment amount, and taking the stirring parameters and additive data as the decision targets, an adjustment decision is executed based on the adjustment block to determine the first adjustment strategy; The first adjustment strategy responds to the mixing station by executing mixing control drive.

5. The method for construction control of concrete silos under high-temperature environments as described in claim 1, characterized in that, The method further includes: After a single pour is completed, based on the thermal stress and temperature data of the pouring space, a time-series analysis of the curing process data fluctuation and distribution uniformity is performed to determine the analysis results. Based on the analysis results, cooling regulation and management will be implemented.

6. A construction control system for concrete silos under high-temperature environments, characterized in that, The system is used to implement the construction control method for concrete silos under high-temperature conditions according to any one of claims 1-5, and the system comprises: A rigid temperature limiter deployment module is used to obtain the silo construction plan. Based on constitutive damage and elastoplastic principles, it deploys a rigid temperature limiter and establishes a connection with the thermal stress field, wherein the thermal stress field is composed of a mixing space, a conveying space, and a pouring space. The adjustment block development module is used to develop adjustment blocks in the construction control system, with the addition of secondary mixing and admixtures as the first adjustment method and dynamic adjustment of casting specifications as the second adjustment method. The construction control module is used to update the thermal stress field by deploying a temperature sensor array, determine temperature exceedances using the rigid temperature limiter, and make construction progress adjustment decisions based on the adjustment block, responding to the front-end equipment for construction control. The mixing plant is the first adjustment front-end equipment, and the concrete placing machine is the second adjustment front-end equipment.

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