Temperature control system and control method for underground pipe gallery concrete construction

Abstract

The invention provides a temperature control system and method for underground pipe gallery concrete construction, and relates to the technical field of intelligent construction.The method includes the steps that environment data of a concrete construction area are collected and preprocessed and analyzed, and a concrete condensation temperature index, a construction environment quality index and a construction energy efficiency index are generated; and comprehensively obtaining a temperature control index, and determining a temperature control target parameter of concrete construction so as to generate a construction standard value. And on this basis, a temperature control adjustment strategy is formulated, corresponding parameter adjustment is performed on the construction equipment, the generated operation standard value is compared with the temperature control index, and if the set standard is not reached, the adjustment process is repeated until the temperature control index meets the requirement. According to the invention, the temperature management optimization in the concrete construction process is realized through the technical means of environmental data acquisition, pretreatment analysis, dynamic temperature control adjustment and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent construction, and in particular to a temperature control system and a control method for underground pipe gallery concrete construction. Background Art

[0002] During the construction of ultra-long underground pipe corridors, cracks may occur in the side wall construction process under the influence of various conditions, which greatly affects the quality of the main structure. At present, the common solutions to this situation include changing the concrete mix ratio, changing the concrete curing method, adding post-casting strips, waiting for the night temperature to drop before construction, etc. However, the implementation of the above solutions has certain implementation conditions. At present, there is also a construction method that introduces the temperature control system of ultra-long underground pipe corridors, that is, arranging PE-RT pipes on the side walls of the pipe corridor to achieve a cooling effect, directly reducing the temperature effect, and arranging PE-RT pipes on the bottom plate. When the water flows through the side wall, the temperature will rise to a certain extent. When passing through the bottom plate, it will dissipate heat to achieve a heating effect, reduce the temperature difference between the side wall and the bottom plate, and reduce the boundary effect caused by the boundary constraint. In addition to the cooling effect, when the temperature is too low or construction is carried out in winter, the heating effect can also be achieved through the intelligent water tank and water circulation system, so that the ultra-long underground pipe corridor can be constructed normally at low temperatures without affecting the normal use of the structure.

[0003] In the prior art, publication number CN111488014A discloses an intelligent temperature control system for large-volume concrete construction, which includes a first temperature sensor for detecting the inner surface temperature of the large-volume concrete and a cooling water pipe in the large-volume concrete, the water inlet and the outlet of the cooling water pipe are located on the outside of the large-volume concrete, the water inlet is installed with a motor water pump, the motor water pump is connected to a water tank, and the surface of the large-volume concrete is provided with a second temperature sensor for detecting the surface temperature of the large-volume concrete; a protection box is installed at the concrete construction site, and a temperature acquisition module and a display module are installed in the protection box; a system host, the system host exchanges information with the first temperature sensor, the second temperature sensor, and the motor water pump.

[0004] Insufficient existing technology:

[0005] The intelligent temperature control system for large-volume concrete construction mainly relies on the first temperature sensor and the second temperature sensor to detect the temperature of the inner and outer surfaces of the concrete. This setting may be insufficient in terms of the accuracy and comprehensiveness of temperature monitoring. Since the temperature distribution on the inner surface of the concrete may be uneven, a single inner surface sensor may not reflect the actual temperature of the entire volume. In addition, the system does not consider setting up multiple sensors at different depths and areas, which leads to the inability to detect potential temperature anomalies and thermal stress concentration in a timely manner, increasing the risk of construction quality.

[0006] Although the system is equipped with a motor water pump and a temperature acquisition module, the overall control system is still not intelligent enough. Existing technologies may lack advanced data analysis and prediction algorithms, and cannot achieve dynamic adjustment and prediction of concrete temperature changes. For example, the system may not be able to automatically adjust the cooling water flow or temperature according to real-time temperature changes, resulting in a delayed response. In addition, the display module in the protective box has relatively simple functions and lacks a user-friendly interface and data visualization function, which may cause operators to face problems such as insufficient information or slow response when monitoring and adjusting the system.

[0007] Therefore, it is necessary to provide a temperature control system and control method for underground pipe gallery concrete construction to solve the above problems.

[0008] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute the prior art that is already known to one of ordinary skill in the art. Summary of the invention

[0009] The object of the present invention is to provide a temperature control system and a control method for underground pipe gallery concrete construction to solve the problems raised in the above-mentioned background technology.

[0010] To achieve the above object, the present invention provides the following technical solutions:

[0011] A temperature control system for underground pipe gallery concrete construction, specifically comprising:

[0012] A data acquisition module, the data acquisition module is used to collect environmental data of the concrete construction area, the environmental data including the temperature of the inner and outer surfaces of the concrete, water flow rate, air flow rate, and energy consumption data of construction equipment;

[0013] A transmission and data processing module, which is used to perform preprocessing and analysis on the collected environmental data, generate a concrete setting temperature index, a construction environment quality index and a construction energy efficiency index, and comprehensively generate a temperature control index based on the generated concrete setting temperature index, construction environment quality index and construction energy efficiency index;

[0014] A temperature control target setting module, which is used to determine the temperature control target parameters of concrete construction, including the standard value of concrete pouring temperature, the standard value of water flow rate during construction, the standard value of air flow rate during construction, and the standard value of energy consumption, and to comprehensively generate the construction standard value based on the temperature control target parameters;

[0015] A temperature control adjustment strategy generation module, which generates a temperature control adjustment strategy based on the set temperature control target parameters and adjusts the relevant parameters of the construction equipment;

[0016] Feedback regulation module, the feedback regulation module is used to compare the generated operating standard value with the temperature control index of concrete construction. If the temperature control index does not reach the set operating standard value, the operation in the temperature control adjustment strategy is repeated to adjust the construction equipment.

[0017] Furthermore, the environmental data of the concrete construction area is collected based on the following method:

[0018] The concrete surface inside the underground pipe gallery is taken as the concrete outer surface, and the concrete surface outside the underground pipe gallery is taken as the concrete inner surface. n temperature sensors are evenly installed on the concrete outer surface to measure the multi-point temperature on the concrete outer surface, and the average temperature of each point is taken as the concrete outer surface temperature. The formula is:

[0019]

[0020] Among them, T sur represents the outer surface temperature of concrete, T j is the temperature measured by the jth temperature sensor, j is the index of the temperature sensor, and j∈[1,n], n≥2;

[0021] K infrared thermal imagers are evenly placed on the outer surface of the concrete to measure the temperature of multiple points on the inner surface of the concrete, and the average temperature of each point is used as the inner surface temperature of the concrete. The formula is:

[0022]

[0023] Among them, T int represents the inner surface temperature of concrete, T i is the temperature measured by the i-th infrared thermal imager, i is the index of the infrared thermal imager, and i∈[1, k], k≥2;

[0024] The water flow meter is installed at the outlet of the delivery pipe or water supply system that contacts the concrete during the concrete pouring process to ensure that the water flow meter can accurately measure the water flow into the concrete. The ratio of the water flow rate to the cross-sectional area of ​​the pipe is defined as the water flow rate V. s ;

[0025] Install the hot wire anemometer in the central area of ​​air flow. The probe of the hot wire anemometer should be parallel to the airflow direction and should be placed in an area with uniform flow rate. During measurement, the hot wire is heated by electric current. When air flows through, the temperature of the hot wire will drop due to cooling. By accurately measuring the resistance change of the hot wire and the required current, the speed V of the airflow is measured using the principle of heat conduction. k ;

[0026] The power sensor is installed at the incoming line of the construction equipment distribution box to ensure accurate measurement of the equipment's energy consumption. During the measurement process, the power sensor monitors the voltage and current flowing through the circuit in real time to obtain the equipment's power data P. By recording the power changes during the total construction time, the total energy consumption data E of the equipment during the construction period is obtained.

[0027] Furthermore, the concrete setting temperature index, construction environment quality index and construction energy efficiency index are generated based on the following method:

[0028] The concrete setting temperature index is used to evaluate the setting state of concrete. It is sensitive to the temperature change of concrete and is calculated based on the change of internal and surface temperature and the maximum temperature that the concrete can reach. The formula is:

[0029]

[0030] Among them, I c Represents the concrete setting temperature index, T allow is the maximum permissible temperature of concrete;

[0031] The construction environment quality index is used to evaluate the impact of the construction environment. It takes into account the water flow rate, air flow rate and the optimal water flow rate and optimal air flow rate to calculate the construction environment quality index. The formula is:

[0032] I e =|V s -W best |+|V k -D best |

[0033] Among them, I e represents the construction environment quality index, W best , D best Optimal water flow rate, optimal air flow rate respectively;

[0034] The construction energy efficiency index is used to evaluate the energy efficiency during the construction process. The ratio of the actual energy consumption of construction equipment to the total power is calculated as the construction energy efficiency index. The formula is:

[0035]

[0036] Among them, I p Indicates the construction energy efficiency index, enter E actual is the actual power consumption of the construction equipment, and output P is the total power of the construction equipment.

[0037] Furthermore, the temperature control index is comprehensively generated according to the generated concrete setting temperature index, construction environment quality index and construction energy efficiency index, and the method is as follows:

[0038]

[0039] Among them, WK represents the temperature control index.

[0040] Furthermore, the construction standard value is comprehensively generated according to the temperature control target parameter, and the method is based on:

[0041] Determine the standard values ​​of various environmental parameters during concrete pouring, including the standard value of concrete pouring temperature T set , Standard value of water flow rate during construction Standard value of air velocity during construction Energy consumption standard value E set , the construction standard value is calculated using the weighted method, and the formula is:

[0042]

[0043] Among them, S standard Indicates the construction standard value, a, b, c, d are the proportional coefficients of their corresponding parameters, and a>d>b>c>0, T set is the standard value of temperature for concrete pouring, is the standard value of water flow rate during construction, is the standard value of air velocity during construction, E set It is the standard value of energy consumption.

[0044] Furthermore, a temperature control adjustment strategy is generated and the relevant parameters of the construction equipment are adjusted according to the following method:

[0045] Adjust the heating device. According to the temperature data of the inner and outer surfaces of the concrete, adjust the working mode of the heating device. When the temperature of the inner and outer surfaces of the concrete is lower than the standard temperature value for concrete pouring, increase the power of the heating device to speed up the concrete forming speed.

[0046] Adjust the cooling device. When the temperature of the inner and outer surfaces of the concrete exceeds the standard temperature value for concrete pouring, start the cooling device in time and increase the power and working time of the cooling device to quickly reduce the temperature of the inner and outer surfaces of the concrete to prevent the concrete from cracking due to overheating:

[0047] Energy consumption equipment operation optimization, when the inner and outer surface temperatures of concrete exceed the standard temperature value of concrete pouring, increase the fan speed to promote cooling; when the inner and outer surface temperatures of concrete are lower than the standard temperature value of concrete pouring, reduce the fan speed to promote heat retention. The formula is:

[0048]

[0049] Among them, V fanRepresents the adjusted operating rate of energy-consuming equipment, V base is the reference fan speed, k f is the fan speed adjustment factor, T sur (t) represents the outer surface temperature of the concrete at time t, T int (t) represents the inner surface temperature of the concrete at time t.

[0050] Furthermore, the generated operating standard value is compared with the temperature control index of concrete construction. If the temperature control index does not reach the set operating standard value, the operation in the temperature control adjustment strategy is repeated. The logic is as follows:

[0051]

[0052] Among them, χ represents the logical judgment value for judging whether the temperature control index reaches the set operating standard value. When χ=0, it indicates that the temperature control index has reached the operating standard value and no adjustment is required for the construction equipment; when χ=1, it indicates that the temperature control index has not reached the operating standard value and the construction equipment needs to be adjusted.

[0053] The present invention further provides a temperature control method for underground pipe gallery concrete construction, the temperature control method is used to execute the above-mentioned temperature control system for underground pipe gallery concrete construction, comprising:

[0054] Step 1: Collect environmental data of the concrete construction area, including the temperature of the inner and outer surfaces of the concrete, water flow rate, air flow rate, and energy consumption data of construction equipment;

[0055] Step 2: Preprocess and analyze the collected environmental data to generate a concrete setting temperature index, a construction environment quality index, and a construction energy efficiency index, and comprehensively generate a temperature control index based on the generated concrete setting temperature index, construction environment quality index, and construction energy efficiency index;

[0056] Step 3: Determine the temperature control target parameters for concrete construction, including the standard value of concrete pouring temperature, the standard value of water flow rate during construction, the standard value of air flow rate during construction, and the standard value of energy consumption, and comprehensively generate the construction standard value based on the temperature control target parameters;

[0057] Step 4: Based on the set temperature control target parameters, generate a temperature control adjustment strategy and adjust the relevant parameters of the construction equipment;

[0058] Step 5: Compare the generated operating standard value with the temperature control index of concrete construction. If the temperature control index does not reach the set operating standard value, repeat the operation in the temperature control adjustment strategy to adjust the construction equipment.

[0059] Compared with the prior art, the present invention has the following beneficial effects:

[0060] The present invention significantly improves the temperature monitoring and adjustment capabilities of the concrete construction temperature control system by introducing a comprehensive data acquisition and analysis module. Different from the prior art that only uses limited sensors, the present invention adopts a grid layout method and arranges multiple temperature sensors in the concrete pouring area, which can obtain the temperature data of the inner surface and surface of the concrete more comprehensively and accurately. At the same time, the inner surface temperature is calculated by the weighted average method, and the concrete coagulation temperature index, construction environment quality index and construction energy efficiency index are generated in combination with real-time monitoring of water flow rate, air flow rate and energy consumption of construction equipment. This comprehensive analysis makes the generation of temperature control index more accurate, provides a reliable basis for the setting of temperature control targets and the formulation of adjustment strategies, and effectively overcomes the problems of reaction lag and monitoring limitations in the prior art;

[0061] The temperature control system of the present invention significantly improves the temperature control efficiency and quality of concrete construction, ensures that concrete solidifies under optimal temperature conditions, and reduces the risk of cracks and strength loss caused by temperature fluctuations. Through the real-time feedback mechanism, the system can timely adjust the operating status of the heating device, cooling device and fan, optimize energy consumption during the construction process, and improve the energy efficiency of construction equipment. In addition, by setting precise temperature control target parameters and standard values, the system helps to improve the overall quality of the construction environment, thereby ensuring construction progress and quality;

[0062] The present invention realizes accurate monitoring and intelligent regulation of the construction temperature of underground pipe gallery concrete through a comprehensive data collection and analysis module and a real-time feedback mechanism, thereby improving construction quality and energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 It is a schematic diagram of the system module flow of the present invention.

[0064] Figure 2 It is a schematic diagram of the overall method flow of the present invention. DETAILED DESCRIPTION

[0065] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0066] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0067] Example:

[0068] See also Figure 1 , a temperature control system for underground pipe gallery concrete construction, the specific steps include:

[0069] A data acquisition module, the data acquisition module is used to collect environmental data of the concrete construction area, the environmental data including the temperature of the inner and outer surfaces of the concrete, water flow rate, air flow rate, and energy consumption data of construction equipment;

[0070] A transmission and data processing module, which is used to perform preprocessing and analysis on the collected environmental data, generate a concrete setting temperature index, a construction environment quality index and a construction energy efficiency index, and comprehensively generate a temperature control index based on the generated concrete setting temperature index, construction environment quality index and construction energy efficiency index;

[0071] A temperature control target setting module, which is used to determine the temperature control target parameters of concrete construction, including the standard value of concrete pouring temperature, the standard value of water flow rate during construction, the standard value of air flow rate during construction, and the standard value of energy consumption, and to comprehensively generate the construction standard value based on the temperature control target parameters;

[0072] A temperature control adjustment strategy generation module, which generates a temperature control adjustment strategy based on the set temperature control target parameters and adjusts the relevant parameters of the construction equipment;

[0073] Feedback regulation module, the feedback regulation module is used to compare the generated operating standard value with the temperature control index of concrete construction. If the temperature control index does not reach the set operating standard value, the operation in the temperature control adjustment strategy is repeated to adjust the construction equipment.

[0074] It should be noted that during the concrete construction process, accurate monitoring of various environmental parameters is essential to ensure the quality of concrete and construction safety. Setting up temperature sensors and infrared thermal imagers can effectively obtain the temperature distribution of the outer and inner surfaces of concrete, preventing cracks and reduced strength caused by excessively high or uneven temperatures. At the same time, by monitoring the water flow rate during concrete pouring through a water flow meter, the water-cement ratio can be optimized to ensure the workability and strength of the concrete. The installation of a hot wire anemometer can grasp the air flow conditions in real time and prevent water loss due to excessive evaporation. In addition, the use of power sensors can accurately monitor the energy consumption of construction equipment, help formulate reasonable construction plans, and reduce energy consumption and costs.

[0075] Furthermore, the environmental data of the concrete construction area is collected based on the following method:

[0076] The concrete surface inside the underground pipe gallery is taken as the concrete outer surface, and the concrete surface outside the underground pipe gallery is taken as the concrete inner surface. n temperature sensors are evenly installed on the concrete outer surface to measure the multi-point temperature on the concrete outer surface, and the average temperature of each point is taken as the concrete outer surface temperature. The formula is:

[0077]

[0078] Among them, T sur represents the outer surface temperature of concrete, T j is the temperature measured by the jth temperature sensor, j is the index of the temperature sensor, and j∈[1,n], n≥2;

[0079] K infrared thermal imagers are evenly placed on the outer surface of the concrete to measure the temperature of multiple points on the inner surface of the concrete, and the average temperature of each point is used as the inner surface temperature of the concrete. The formula is:

[0080]

[0081] Among them, T int represents the inner surface temperature of concrete, T i is the temperature measured by the i-th infrared thermal imager, i is the index of the infrared thermal imager, and i∈[1,k], k≥2;

[0082] The water flow meter is installed at the outlet of the delivery pipe or water supply system that contacts the concrete during the concrete pouring process to ensure that the water flow meter can accurately measure the water flow into the concrete. The ratio of the water flow rate to the cross-sectional area of ​​the pipe is defined as the water flow rate V. s ;

[0083] Install the hot wire anemometer in the central area of ​​air flow. The probe of the hot wire anemometer should be parallel to the airflow direction and should be placed in an area with uniform flow rate. During measurement, the hot wire is heated by electric current. When air flows through, the temperature of the hot wire will drop due to cooling. By accurately measuring the resistance change of the hot wire and the required current, the speed V of the airflow is measured using the principle of heat conduction. k ;

[0084] The power sensor is installed at the incoming line of the construction equipment distribution box to ensure accurate measurement of the equipment's energy consumption. During the measurement process, the power sensor monitors the voltage and current flowing through the circuit in real time to obtain the equipment's power data P. By recording the power changes during the total construction time, the total energy consumption data E of the equipment during the construction period is obtained.

[0085] It should be noted that the process of generating the concrete setting temperature index, the construction environment quality index and the construction energy efficiency index is of great significance. These indices provide a quantitative basis for construction quality, safety and efficiency. First, the calculation of the concrete setting temperature index can help construction personnel to understand the setting state of concrete in a timely manner, avoid strength problems and crack risks caused by excessive temperature or improper temperature changes, and thus ensure the long-term durability of the concrete structure. Secondly, the construction environment quality index ensures the suitability of the construction environment by monitoring the water flow rate and air flow rate, improves the workability and molding quality of concrete, and thus reduces the possibility of construction defects. Finally, the construction energy efficiency index helps optimize the energy efficiency during the construction process by evaluating the energy consumption of equipment, reducing costs and reducing the impact on the environment.

[0086] Furthermore, the concrete setting temperature index, construction environment quality index and construction energy efficiency index are generated based on the following method:

[0087] The concrete setting temperature index is used to evaluate the setting state of concrete. It is sensitive to the temperature change of concrete and is calculated based on the change of internal and surface temperature and the maximum temperature that the concrete can reach. The formula is:

[0088]

[0089] Among them, I c Represents the concrete setting temperature index, T allow is the maximum allowable temperature of concrete; in the above formula, when the temperature difference between the inside and outside of concrete increases, the concrete setting temperature index will increase, which means that a higher temperature is required for concrete setting;

[0090] The construction environment quality index is used to evaluate the impact of the construction environment. It takes into account the water flow rate, air flow rate and the optimal water flow rate and optimal air flow rate to calculate the construction environment quality index. The formula is:

[0091] I e =|V s -W best |+|V k -D best |

[0092] Among them, I e represents the construction environment quality index, W best , D best The optimal water flow rate and the optimal air flow rate are respectively; in the above formula, when the absolute value difference between the water flow rate, the air flow rate and the optimal water flow rate, the optimal air flow rate decreases, the construction environment quality index also decreases, indicating that the environmental conditions required for the current construction are low and suitable for construction;

[0093] The construction energy efficiency index is used to evaluate the energy efficiency during the construction process. The ratio of the actual energy consumption of construction equipment to the total power is calculated as the construction energy efficiency index. The formula is:

[0094]

[0095] Among them, I p Indicates the construction energy efficiency index, enter E actual is the actual power consumption of the construction equipment, and output P is the total power of the construction equipment.

[0096] It should be noted that by comprehensively considering the setting state of concrete, construction environment quality and construction energy efficiency, a quantitative evaluation index is provided for temperature management during concrete construction. The temperature control index can help construction personnel to timely identify and adjust temperature control measures during construction to ensure the quality and performance of concrete.

[0097] Furthermore, the temperature control index is comprehensively generated according to the generated concrete setting temperature index, construction environment quality index and construction energy efficiency index, and the method is as follows:

[0098]

[0099] Wherein, WK represents the temperature control index; in the above formula, I c , the larger the value, the more drastic the temperature change of the concrete, which may lead to problems such as premature coagulation, reduced strength or cracks, and then the temperature control index is reduced to ensure temperature stability; if T e If it is higher, it means that the construction environment is not ideal, which may cause the water in the concrete to evaporate too quickly, thus affecting its hydration reaction and strength development, and reducing the temperature control index; p The smaller the value of becomes, the higher the temperature control index will be, which means that energy efficiency improvement during construction will help improve temperature control.

[0100] It should be noted that by clarifying the temperature, water flow rate, air flow rate and energy consumption standards during concrete pouring, and using the weighted method to comprehensively consider the impact of each parameter, clear operational guidance can be provided to the construction team to ensure that key parameters are within the optimal range, thereby effectively reducing construction defects and risks.

[0101] Furthermore, the construction standard value is comprehensively generated according to the temperature control target parameter, and the method is based on:

[0102] Determine the standard values ​​of various environmental parameters during concrete pouring, including the standard value of concrete pouring temperature T set , Standard value of water flow rate during construction Standard value of air velocity during construction Energy consumption standard value E set , the construction standard value is calculated using the weighted method, and the formula is:

[0103]

[0104] Among them, S standard Indicates the construction standard value, a, b, c, d are the proportional coefficients of their corresponding parameters, and a>d>b>c>0, T set is the standard value of temperature for concrete pouring, is the standard value of water flow rate during construction, is the standard value of air velocity during construction, E set is the standard value of energy consumption; in the above formula, the weight ratio coefficient is set to a>d>b>c>0 because the setting process of concrete is extremely sensitive to temperature. Too high or too low temperature will directly affect the hydration reaction and final strength of concrete. Therefore, the highest weight a is given to it to emphasize the importance of temperature control. Energy consumption is directly related to the economy and environmental impact of construction. Although energy consumption is not as important as temperature, it still has a significant impact on construction efficiency and resource utilization. Therefore, it is given a higher weight d. Water flow rate affects the workability and pouring quality of concrete, and its importance is slightly lower than energy consumption. Therefore, it is given a medium weight b. Air flow rate mainly affects the evaporation and curing process of concrete, but relatively speaking, its direct impact on concrete quality is small, so it is given the lowest weight c.

[0105] It should be noted that by real-time monitoring of the temperature of the inner and outer surfaces of concrete and adjusting the working mode of the heating and cooling devices accordingly, the temperature of the concrete can be effectively kept near the established standard value to prevent quality problems caused by temperature deviation, such as cracking caused by overheating or insufficient strength caused by too low a temperature. In addition, optimizing the operation of energy-consuming equipment and dynamically adjusting the fan speed according to the changes in the outer and inner surface temperatures can not only improve construction efficiency, but also reduce energy consumption and improve economic benefits. Such a strategy ensures the controllability and flexibility of the construction process, thereby providing protection for the long-term performance of concrete structures.

[0106] Furthermore, a temperature control adjustment strategy is generated and the relevant parameters of the construction equipment are adjusted according to the following method:

[0107] Adjust the heating device. According to the temperature data of the inner and outer surfaces of the concrete, adjust the working mode of the heating device. When the temperature of the inner and outer surfaces of the concrete is lower than the standard temperature value for concrete pouring, increase the power of the heating device to speed up the concrete forming speed.

[0108] Adjust the cooling device. When the temperature of the inner and outer surfaces of the concrete exceeds the standard temperature value for concrete pouring, start the cooling device in time and increase the power and working time of the cooling device to quickly reduce the temperature of the inner and outer surfaces of the concrete to prevent the concrete from cracking due to overheating.

[0109] Energy consumption equipment operation optimization, when the inner and outer surface temperatures of concrete exceed the standard temperature value of concrete pouring, increase the fan speed to promote cooling; when the inner and outer surface temperatures of concrete are lower than the standard temperature value of concrete pouring, reduce the fan speed to promote heat retention. The formula is:

[0110]

[0111] Among them, V fan Represents the adjusted operating rate of energy-consuming equipment, V base is the reference fan speed, k f is the fan speed adjustment factor, T sur (t) represents the outer surface temperature of the concrete at time t, T int (t) represents the inner surface temperature of the concrete at time t.

[0112] It should be noted that by introducing the logical judgment value, it is possible to monitor in real time whether the temperature control index reaches the set operating standard value, so as to determine whether further adjustment of the construction equipment is needed. If χ = 0, it means that the temperature control conditions meet the requirements and the construction can be carried out safely; if χ = 1, it means that the temperature control index does not meet the standard and the equipment must be adjusted in time to ensure that the concrete is poured and cured within the optimal temperature range. This dynamic feedback mechanism enhances the adaptability and responsiveness of the construction, effectively reduces the risk of construction defects caused by improper temperature control, and ensures the structural performance and durability of the concrete.

[0113] Furthermore, the generated operating standard value is compared with the temperature control index of concrete construction. If the temperature control index does not reach the set operating standard value, the operation in the temperature control adjustment strategy is repeated. The logic is as follows:

[0114]

[0115] Among them, χ represents the logical judgment value for judging whether the temperature control index reaches the set operating standard value. When χ=0, it indicates that the temperature control index has reached the operating standard value and no adjustment is required for the construction equipment; when χ=1, it indicates that the temperature control index has not reached the operating standard value and the construction equipment needs to be adjusted.

[0116] The present invention further provides a temperature control method for underground pipe gallery concrete construction, the temperature control method is used to execute the above-mentioned temperature control system for underground pipe gallery concrete construction, comprising:

[0117] Step 1: Collect environmental data of the concrete construction area, including the temperature of the inner and outer surfaces of the concrete, water flow rate, air flow rate, and energy consumption data of construction equipment;

[0118] Step 2: Preprocess and analyze the collected environmental data to generate a concrete setting temperature index, a construction environment quality index, and a construction energy efficiency index, and comprehensively generate a temperature control index based on the generated concrete setting temperature index, construction environment quality index, and construction energy efficiency index;

[0119] Step 3: Determine the temperature control target parameters for concrete construction, including the standard value of concrete pouring temperature, the standard value of water flow rate during construction, the standard value of air flow rate during construction, and the standard value of energy consumption, and comprehensively generate the construction standard value based on the temperature control target parameters;

[0120] Step 4: Based on the set temperature control target parameters, generate a temperature control adjustment strategy and adjust the relevant parameters of the construction equipment;

[0121] Step 5: Compare the generated operating standard value with the temperature control index of concrete construction. If the temperature control index does not reach the set operating standard value, repeat the operation in the temperature control adjustment strategy to adjust the construction equipment.

[0122] The above formulas are all dimensionless and numerical calculations. The formula is a formula for the most recent real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters in the formula are set by technicians in this field according to actual conditions.

[0123] The above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination thereof. When implemented by software, the above embodiments may be implemented in whole or in part in the form of a computer program product. Those skilled in the art may appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein may be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed by hardware or software methods depends on the specific application and design constraints of the technical solution.

[0124] 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, and 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.

[0125] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the 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.

Claims

1. A temperature control system for underground pipe gallery concrete construction, characterized in that: The specific steps include: A data acquisition module, the data acquisition module is used to collect environmental data of the concrete construction area, the environmental data including the temperature of the inner and outer surfaces of the concrete, water flow rate, air flow rate, and energy consumption data of construction equipment; A transmission and data processing module, which is used to perform preprocessing and analysis on the collected environmental data, generate a concrete setting temperature index, a construction environment quality index and a construction energy efficiency index, and comprehensively generate a temperature control index based on the generated concrete setting temperature index, construction environment quality index and construction energy efficiency index; A temperature control target setting module, which is used to determine the temperature control target parameters of concrete construction, including the standard value of concrete pouring temperature, the standard value of water flow rate during construction, the standard value of air flow rate during construction, and the standard value of energy consumption, and to comprehensively generate the construction standard value based on the temperature control target parameters; A temperature control adjustment strategy generation module, which generates a temperature control adjustment strategy based on the set temperature control target parameters and adjusts the relevant parameters of the construction equipment; Feedback regulation module, the feedback regulation module is used to compare the generated operating standard value with the temperature control index of concrete construction. If the temperature control index does not reach the set operating standard value, the operation in the temperature control adjustment strategy is repeated to adjust the construction equipment.

2. A temperature control system for underground pipe gallery concrete construction according to claim 1, characterized in that ,Collect environmental data of the concrete construction area based on the following method: The concrete surface inside the underground pipe gallery is taken as the concrete outer surface, and the concrete surface outside the underground pipe gallery is taken as the concrete inner surface. n temperature sensors are evenly installed on the concrete outer surface to measure the multi-point temperature on the concrete outer surface, and the average temperature of each point is taken as the concrete outer surface temperature. The formula is: Among them, T sur represents the outer surface temperature of concrete, T j is the temperature measured by the jth temperature sensor, j is the index of the temperature sensor, and j∈[1,n], n≥2; K infrared thermal imagers are evenly placed on the outer surface of the concrete to measure the temperature of multiple points on the inner surface of the concrete, and the average temperature of each point is used as the inner surface temperature of the concrete. The formula is: Among them, T int Indicates the inner surface temperature of concrete, T i is the temperature measured by the i-th infrared thermal imager, i is the index of the infrared thermal imager, and i∈[1,k], k≥2; The water flow meter is installed at the outlet of the delivery pipe or water supply system that contacts the concrete during the concrete pouring process to ensure that the water flow meter can accurately measure the water flow into the concrete. The ratio of the water flow rate to the cross-sectional area of ​​the pipe is defined as the water flow rate V. s ; Install the hot wire anemometer in the central area of ​​air flow. The probe of the hot wire anemometer should be parallel to the airflow direction and should be placed in an area with uniform flow rate. During measurement, the hot wire is heated by electric current. When air flows through, the temperature of the hot wire will drop due to cooling. By accurately measuring the resistance change of the hot wire and the required current, the speed V of the airflow is measured using the principle of heat conduction. k ; The power sensor is installed at the incoming line of the construction equipment distribution box to ensure accurate measurement of the equipment's energy consumption. During the measurement process, the power sensor monitors the voltage and current flowing through the circuit in real time to obtain the equipment's power data P. By recording the power changes during the total construction time, the total energy consumption data E of the equipment during the construction period is obtained.

3. A temperature control system for underground pipe gallery concrete construction according to claim 2, characterized in that: The method for generating the concrete setting temperature index, the construction environment quality index and the construction energy efficiency index is based on: The concrete setting temperature index is used to evaluate the setting state of concrete. It is sensitive to the temperature change of concrete and is calculated based on the change of internal and surface temperature and the maximum temperature that the concrete can reach. The formula is: Among them, I c Represents the concrete setting temperature index, T allow is the maximum permissible temperature of concrete; The construction environment quality index is used to evaluate the impact of the construction environment. It takes into account the water flow rate, air flow rate and the optimal water flow rate and optimal air flow rate to calculate the construction environment quality index. The formula is: I e =|V s -W best |+|V k -D best | Among them, I e represents the construction environment quality index, W best , D best Optimal water flow rate, optimal air flow rate respectively; The construction energy efficiency index is used to evaluate the energy efficiency during the construction process. The ratio of the actual energy consumption of construction equipment to the total power is calculated as the construction energy efficiency index. The formula is: Among them, I p Indicates the construction energy efficiency index, enter E actual is the actual power consumption of the construction equipment, and output P is the total power of the construction equipment.

4. A temperature control system for underground pipe gallery concrete construction according to claim 3, characterized in that: The temperature control index is comprehensively generated according to the generated concrete setting temperature index, construction environment quality index and construction energy efficiency index, and the method is as follows: Among them, WK represents the temperature control index.

5. The temperature control system for underground pipe gallery concrete construction according to claim 1 is characterized in that: The construction standard value is comprehensively generated according to the temperature control target parameters, and the method is based on: Determine the standard values ​​of various environmental parameters during concrete pouring, including the standard value of concrete pouring temperature T set , Standard value of water flow rate during construction Standard value of air velocity during construction Energy consumption standard value E set , the construction standard value is calculated using the weighted method, and the formula is: Among them, S standard represents the construction standard value, a, b, c, d are the proportional coefficients of their corresponding parameters, and a>d>b>c>0, T set is the standard value of temperature for concrete pouring, is the standard value of water flow rate during construction, is the standard value of air velocity during construction, E set It is the standard value of energy consumption.

6. A temperature control system for underground pipe gallery concrete construction according to claim 1, characterized in that: Generate temperature control adjustment strategies and adjust relevant parameters of construction equipment based on the following methods: Adjust the heating device. According to the temperature data of the inner and outer surfaces of the concrete, adjust the working mode of the heating device. When the temperature of the inner and outer surfaces of the concrete is lower than the standard temperature value for concrete pouring, increase the power of the heating device to speed up the concrete forming speed. Adjust the cooling device. When the temperature of the inner and outer surfaces of the concrete exceeds the standard temperature value for concrete pouring, start the cooling device in time and increase the power and working time of the cooling device to quickly reduce the temperature of the inner and outer surfaces of the concrete to prevent the concrete from cracking due to overheating. Energy consumption equipment operation optimization, when the inner and outer surface temperatures of concrete exceed the standard temperature value of concrete pouring, increase the fan speed to promote cooling; when the inner and outer surface temperatures of concrete are lower than the standard temperature value of concrete pouring, reduce the fan speed to promote heat retention. The formula is: Among them, V fan Represents the adjusted operating rate of energy-consuming equipment, V base is the reference fan speed, k f is the fan speed adjustment factor, T sur (t) represents the outer surface temperature of the concrete at time t, T int (t) represents the inner surface temperature of the concrete at time t.

7. A temperature control system for underground pipe gallery concrete construction according to claim 1, characterized in that: The generated operating standard value is compared with the temperature control index of concrete construction. If the temperature control index does not reach the set operating standard value, the operation in the temperature control adjustment strategy is repeated. The logic is as follows: Among them, χ represents the logical judgment value for judging whether the temperature control index reaches the set operating standard value. When χ=0, it indicates that the temperature control index has reached the operating standard value and no adjustment is required for the construction equipment; when χ=1, it indicates that the temperature control index has not reached the operating standard value and the construction equipment needs to be adjusted.

8. A temperature control method for underground pipe gallery concrete construction, characterized in that: The temperature control method is used to implement a temperature control system for underground pipe gallery concrete construction according to any one of claims 1 to 7, comprising: Step 1: Collect environmental data of the concrete construction area, including the temperature of the inner and outer surfaces of the concrete, water flow rate, air flow rate, and energy consumption data of construction equipment; Step 2: Preprocess and analyze the collected environmental data to generate a concrete setting temperature index, a construction environment quality index, and a construction energy efficiency index, and comprehensively generate a temperature control index based on the generated concrete setting temperature index, construction environment quality index, and construction energy efficiency index; Step 3: Determine the temperature control target parameters for concrete construction, including the standard value of concrete pouring temperature, the standard value of water flow rate during construction, the standard value of air flow rate during construction, and the standard value of energy consumption, and comprehensively generate the construction standard value based on the temperature control target parameters; Step 4: Based on the set temperature control target parameters, generate a temperature control adjustment strategy and adjust the relevant parameters of the construction equipment; Step 5: Compare the generated operating standard value with the temperature control index of concrete construction. If the temperature control index does not reach the set operating standard value, repeat the operation in the temperature control adjustment strategy to adjust the construction equipment.

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