A temperature control system and control method for underground pipe gallery concrete construction

Abstract

The present invention provides a temperature control system and control method for underground pipe gallery concrete construction, which relates to the field of intelligent construction technology. The present invention collects environmental data of the concrete construction area, performs pre-processing analysis on these data, generates a concrete setting temperature index, a construction environment quality index and a construction energy efficiency index, and comprehensively obtains a temperature control index to determine the temperature control target parameters of the concrete construction, thereby generating a construction standard value. On this basis, a temperature control adjustment strategy is formulated and the corresponding parameters of the construction equipment are adjusted. The generated operating standard value is compared with the temperature control index. If the set standard is not met, the adjustment process is repeated until the temperature control index meets the requirements. The present invention realizes the optimization of temperature management during the concrete construction process through technical means such as environmental data collection, pre-processing analysis and dynamic temperature control adjustment.

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 can form in the side walls due to various factors, significantly impacting the quality of the main structure. Currently, common solutions include changing the concrete mix ratio, modifying the concrete curing method, adding post-cast joints, and waiting for nighttime temperatures to drop before construction. However, these solutions all have certain implementation requirements. Another construction method currently incorporates a temperature control system for ultra-long underground pipe corridors. This involves placing PE-RT pipes in the corridor side walls to achieve a cooling effect, directly reducing the temperature effect. Furthermore, PE-RT pipes are placed in the floor slab. When water flows through the side walls, it heats up slightly. As it passes through the floor slab, it dissipates heat, achieving a warming effect. This reduces the temperature difference between the side walls and the floor, and mitigates the boundary effects caused by boundary constraints. Beyond the cooling effect, when temperatures are too low or construction is carried out in winter, intelligent water tanks and a water circulation system can also achieve a warming effect. This allows the ultra-long underground pipe corridor to operate normally even in low temperatures, without affecting the structure's normal operation.

[0003] In the prior art, publication number CN111488014A discloses an intelligent temperature control system for large-volume concrete construction, which comprises a first temperature sensor for detecting the inner surface temperature of the large-volume concrete and a cooling water pipe inside the large-volume concrete. The water inlet and outlet of the cooling water pipe are located outside the large-volume concrete. A motor water pump is installed at the water inlet, which is connected to a water tank. A second temperature sensor for detecting the surface temperature of the large-volume concrete is provided on the surface of the large-volume concrete; a protective box is installed at the concrete construction site, in which a temperature acquisition module and a display module are installed; and a system host, which 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 primarily relies on primary and secondary temperature sensors to detect the temperatures of the concrete's inner and outer surfaces. This setup can lack accuracy and comprehensiveness in temperature monitoring. Because the temperature distribution on the concrete's inner surface can be uneven, a single inner-surface sensor may not reflect the actual temperature across the entire volume. Furthermore, the system fails to consider the placement of multiple sensors at varying depths and locations, hindering timely detection of potential temperature anomalies and concentrated thermal stresses, increasing construction quality risks.

[0006] Although the system is equipped with a motor-driven water pump and a temperature acquisition module, the overall control system lacks sufficient intelligence. Existing technologies may lack advanced data analysis and prediction algorithms, making it impossible to dynamically adjust and anticipate changes in concrete temperature. For example, the system may not automatically adjust the cooling water flow or temperature based on real-time temperature changes, resulting in a delayed response. Furthermore, the display module within the protective box is relatively simple in functionality, lacking a user-friendly interface and data visualization capabilities. This can lead to operators facing insufficient information and slow response times 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 form the prior art that is already known to a person of ordinary skill in the art. Summary of the Invention

[0009] The purpose of the present invention is to provide a temperature control system and control method for underground pipe gallery concrete construction to solve the problems raised in the above 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, which is used to 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;

[0013] A transmission and data processing module is used to pre-process 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 to 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 is used to determine temperature control target parameters for concrete construction, including a standard value for concrete pouring temperature, a standard value for water flow rate during construction, a standard value for air flow rate during construction, and a standard value for energy consumption, and to generate a 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 relevant parameters of the construction equipment;

[0016] Feedback adjustment module, the feedback adjustment module is used to compare the generated construction standard value with the temperature control index of concrete construction. If the temperature control index does not reach the set construction 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 was collected based on the following method:

[0018] The concrete surface inside the underground pipe gallery is regarded as the outer surface of the concrete, and the concrete surface outside the underground pipe gallery is regarded as the inner surface of the concrete. n temperature sensors are evenly installed on the outer surface of the concrete to measure the temperature of multiple points on the outer surface of the concrete. The average temperature of each point is regarded as the outer surface temperature of the concrete. 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 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;

[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] The hot wire anemometer is installed in the center of the air flow. The probe of the hot wire anemometer should be parallel to the direction of the airflow and should be placed in an area with uniform flow rate. During measurement, the hot wire is heated by current. When the airflow passes 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 airflow velocity V 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 according to 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 changes in the internal and surface temperatures and the maximum temperature that the concrete can reach. The formula is:

[0029]

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

[0031] The Construction Environment Quality Index is used to assess the impact of the construction environment. It takes into account 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 of the construction process. It calculates the ratio of the actual energy consumption of construction equipment to the total power and uses this 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, a temperature control index is comprehensively generated based on the generated concrete setting temperature index, construction environment quality index, and construction energy efficiency index, according to the method 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 as follows:

[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 flow rate during construction Energy consumption standard value E set , the construction standard value is calculated using the weighted method, based on the formula:

[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. Adjust the working mode of the heating device according to the temperature data of the inner and outer surfaces of the concrete. 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 and prevent the concrete from cracking due to overheating.

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

[0048]

[0049]

[0050] 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 coefficient, 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.

[0051] Furthermore, the generated construction standard value is compared with the temperature control index of concrete construction. If the temperature control index does not reach the set construction standard value, the operation in the temperature control adjustment strategy is repeated. The logic is as follows:

[0052]

[0053] Among them, χ represents the logical judgment value for judging whether the temperature control index has reached the set construction standard value. When χ = 0, it indicates that the temperature control index has reached the construction standard value and no adjustment of the construction equipment is required; when χ = 1, it indicates that the temperature control index has not reached the construction standard value and the construction equipment needs to be adjusted.

[0054] The present invention further provides a temperature control method for underground pipe gallery concrete construction, the temperature control method being used to implement the above-mentioned temperature control system for underground pipe gallery concrete construction, comprising:

[0055] 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;

[0056] 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;

[0057] 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;

[0058] 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;

[0059] Step 5: Compare the generated construction standard value with the temperature control index of concrete construction. If the temperature control index does not reach the set construction standard value, repeat the operation in the temperature control adjustment strategy to adjust the construction equipment.

[0060] Compared with the prior art, the present invention has the following beneficial effects:

[0061] 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. Unlike the existing technology that only uses a limited number of sensors, the present invention adopts a grid layout method to deploy multiple temperature sensors in the concrete pouring area, which can obtain the temperature data of the inner and outer surfaces of the concrete more comprehensively and accurately. At the same time, the inner surface temperature is calculated by the weighted average method, and combined with the real-time monitoring of the water flow rate, air flow rate and energy consumption of the construction equipment, the concrete setting temperature index, construction environment quality index and construction energy efficiency index are generated. This comprehensive analysis makes the generation of the 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 existing technology;

[0062] The temperature control system of this invention significantly improves the efficiency and quality of temperature control during concrete construction, ensuring that concrete solidifies at optimal temperatures and reducing the risk of cracks and strength loss caused by temperature fluctuations. Through a real-time feedback mechanism, the system can promptly adjust the operating status of heating, cooling, and fans, optimizing energy consumption during construction and improving the energy efficiency of construction equipment. Furthermore, by setting precise temperature control target parameters and standard values, the system helps improve the overall quality of the construction environment, thereby ensuring construction progress and quality.

[0063] Through a comprehensive data acquisition and analysis module and a real-time feedback mechanism, the present invention achieves precise monitoring and intelligent regulation of the construction temperature of underground pipe gallery concrete, thereby improving construction quality and energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 It is a schematic diagram of the system module flow of the present invention.

[0065] Figure 2 Schematic diagram of the overall method of the present invention. DETAILED DESCRIPTION

[0066] 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 with reference to specific embodiments.

[0067] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "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 position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0068] Example:

[0069] See also Figure 1 , a temperature control system for underground pipe gallery concrete construction, the specific steps include:

[0070] A data acquisition module, which is used to 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;

[0071] A transmission and data processing module is used to pre-process 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 to comprehensively generate a temperature control index based on the generated concrete setting temperature index, construction environment quality index, and construction energy efficiency index;

[0072] A temperature control target setting module is used to determine temperature control target parameters for concrete construction, including a standard value for concrete pouring temperature, a standard value for water flow rate during construction, a standard value for air flow rate during construction, and a standard value for energy consumption, and to generate a construction standard value based on the temperature control target parameters;

[0073] A temperature control adjustment strategy generation module, which generates a temperature control adjustment strategy based on the set temperature control target parameters and adjusts relevant parameters of the construction equipment;

[0074] Feedback adjustment module, the feedback adjustment module is used to compare the generated construction standard value with the temperature control index of concrete construction. If the temperature control index does not reach the set construction standard value, the operation in the temperature control adjustment strategy is repeated to adjust the construction equipment.

[0075] It's important to note that during concrete construction, accurate monitoring of various environmental parameters is crucial to ensuring concrete quality and construction safety. Temperature sensors and infrared thermal imagers can effectively monitor the temperature distribution on both the exterior and interior surfaces of concrete, preventing cracks and strength loss caused by excessively high or uneven temperatures. Furthermore, monitoring water flow during the concrete pour with a water flow meter can optimize the water-cement ratio and ensure concrete workability and strength. Installing a hot-wire anemometer provides real-time monitoring of air flow conditions, preventing water loss due to rapid evaporation. Furthermore, power sensors can accurately monitor the energy consumption of construction equipment, helping to develop appropriate construction plans and reduce energy consumption and costs.

[0076] Furthermore, the environmental data of the concrete construction area was collected based on the following method:

[0077] The concrete surface inside the underground pipe gallery is regarded as the outer surface of the concrete, and the concrete surface outside the underground pipe gallery is regarded as the inner surface of the concrete. n temperature sensors are evenly installed on the outer surface of the concrete to measure the temperature of multiple points on the outer surface of the concrete. The average temperature of each point is regarded as the outer surface temperature of the concrete. The formula is:

[0078]

[0079] 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;

[0080] 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:

[0081]

[0082] 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;

[0083] 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 ;

[0084] The hot wire anemometer is installed in the center of the air flow. The probe of the hot wire anemometer should be parallel to the direction of the airflow and should be placed in an area with uniform flow rate. During measurement, the hot wire is heated by current. When the airflow passes 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 airflow velocity V is measured using the principle of heat conduction. k ;

[0085] 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.

[0086] It should be noted that the process of generating the Concrete Setting Temperature Index, Construction Environment Quality Index, and Construction Energy Efficiency Index is of great significance. These indices provide a quantitative basis for construction quality, safety, and efficiency. First, calculating the Concrete Setting Temperature Index helps construction personnel promptly understand the setting state of concrete, avoiding strength problems and cracking risks caused by excessive temperatures or improper temperature fluctuations, thereby ensuring the long-term durability of concrete structures. Second, the Construction Environment Quality Index ensures the suitability of the construction environment by monitoring water and air flow rates, improving the workability and molding quality of concrete, thereby reducing the possibility of construction defects. Finally, the Construction Energy Efficiency Index helps optimize energy efficiency during the construction process by evaluating equipment energy consumption, reducing costs and minimizing environmental impact.

[0087] Furthermore, the concrete setting temperature index, construction environment quality index and construction energy efficiency index are generated according to the following method:

[0088] 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 changes in the internal and surface temperatures and the maximum temperature that the concrete can reach. The formula is:

[0089]

[0090] Among them, I c Indicates 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 the concrete increases, the concrete setting temperature index will increase, which means that a higher temperature is required for the concrete to set;

[0091] The Construction Environment Quality Index is used to assess the impact of the construction environment. It takes into account 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:

[0092] I e =|V s -W best |+|V k -D best |

[0093] 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 current environmental conditions required for construction are low and suitable for construction;

[0094] The construction energy efficiency index is used to evaluate the energy efficiency of the construction process. It calculates the ratio of the actual energy consumption of construction equipment to the total power and uses this as the construction energy efficiency index. The formula is:

[0095]

[0096] 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.

[0097] 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.

[0098] Furthermore, a temperature control index is comprehensively generated based on the generated concrete setting temperature index, construction environment quality index, and construction energy efficiency index, according to the method as follows:

[0099]

[0100] 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, strength reduction or cracks, and then the temperature control index is reduced to ensure temperature stability; if I 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.

[0101] It should be noted that by clarifying the temperature, water flow rate, air flow rate and energy consumption standards during concrete pouring, and using a 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.

[0102] Furthermore, the construction standard value is comprehensively generated according to the temperature control target parameter, and the method is as follows:

[0103] 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 flow rate during construction Energy consumption standard value E set , the construction standard value is calculated using the weighted method, based on the formula:

[0104]

[0105] 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 for energy consumption. In the above formula, the weight proportional coefficients are set as a>d>b>c>0 because the setting process of concrete is extremely sensitive to temperature. Excessively high or low temperatures will directly affect the hydration reaction and ultimate strength of concrete. Therefore, it is given the highest weight, a, to emphasize the importance of temperature control. Energy consumption is directly related to the economic and environmental impact of construction. Although energy consumption is less important than temperature, it still has a significant impact on construction efficiency and resource utilization, so it is given a higher weight, d. Water flow rate affects the workability and pouring quality of concrete and is slightly less important than energy consumption. Therefore, it is given a medium weight, b. Air flow rate mainly affects the evaporation and curing process of concrete, but its direct impact on concrete quality is relatively small. Therefore, it is given the lowest weight, c.

[0106] It's important to note that by monitoring the internal and external surface temperatures of concrete in real time and adjusting the operating modes of heating and cooling devices accordingly, the concrete temperature can be effectively maintained near the established standard, preventing quality issues caused by temperature deviations, such as cracking due to overheating or insufficient strength due to low temperatures. Furthermore, optimizing the operation of energy-consuming equipment and dynamically adjusting fan speeds based on changes in external and internal surface temperatures not only improves construction efficiency but also reduces energy consumption and enhances economic benefits. This strategy ensures controllability and flexibility during the construction process, thereby safeguarding the long-term performance of concrete structures.

[0107] Furthermore, a temperature control adjustment strategy is generated and the relevant parameters of the construction equipment are adjusted according to the following method:

[0108] Adjust the heating device. Adjust the working mode of the heating device according to the temperature data of the inner and outer surfaces of the concrete. 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.

[0109] 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 and prevent the concrete from cracking due to overheating.

[0110] Energy consumption equipment operation optimization: when the internal and external surface temperatures of the concrete exceed the standard temperature value for concrete pouring, the fan speed is increased to promote cooling; when the internal and external surface temperatures of the concrete are lower than the standard temperature value for concrete pouring, the fan speed is reduced to promote heat retention. The formula is:

[0111]

[0112] 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 coefficient, 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.

[0113] It's important to note that by introducing a logical judgment value, the temperature control index can be monitored in real time to determine whether it meets the set construction standard value, thereby determining whether further adjustments to construction equipment are needed. If χ = 0, it indicates that temperature control conditions meet the requirements and construction can proceed safely. If χ = 1, however, it means that the temperature control index does not meet the standard, and timely equipment adjustments are required to ensure that the concrete is poured and cured within the optimal temperature range. This dynamic feedback mechanism enhances the adaptability and responsiveness of construction, effectively reducing the risk of construction defects caused by improper temperature control, and ensuring the structural performance and durability of concrete.

[0114] Furthermore, the generated construction standard value is compared with the temperature control index of concrete construction. If the temperature control index does not reach the set construction standard value, the operation in the temperature control adjustment strategy is repeated. The logic is as follows:

[0115]

[0116] Among them, χ represents the logical judgment value for judging whether the temperature control index has reached the set construction standard value. When χ = 0, it indicates that the temperature control index has reached the construction standard value and no adjustment of the construction equipment is required; when χ = 1, it indicates that the temperature control index has not reached the construction standard value and the construction equipment needs to be adjusted.

[0117] The present invention further provides a temperature control method for underground pipe gallery concrete construction, the temperature control method being used to implement the above-mentioned temperature control system for underground pipe gallery concrete construction, comprising:

[0118] 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;

[0119] 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;

[0120] 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;

[0121] 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;

[0122] Step 5: Compare the generated construction standard value with the temperature control index of concrete construction. If the temperature control index does not reach the set construction standard value, repeat the operation in the temperature control adjustment strategy to adjust the construction equipment.

[0123] The above formulas are all dimensionless and numerical calculations. The formulas are obtained by collecting a large amount of data and performing software simulation to obtain the most recent real situation. The preset parameters in the formulas are set by technicians in this field according to actual conditions.

[0124] The above embodiments can be implemented in whole or in part by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed by hardware or software depends on the specific application and design constraints of the technical solution.

[0125] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, and may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment as needed.

[0126] The above is only a specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed in this application, which should be covered by the scope of protection 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, which is used to 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; A transmission and data processing module is used to pre-process 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 to 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 is used to determine temperature control target parameters for concrete construction, including a standard value for concrete pouring temperature, a standard value for water flow rate during construction, a standard value for air flow rate during construction, and a standard value for energy consumption, and to generate a 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 relevant parameters of the construction equipment; Feedback adjustment module: The feedback adjustment module is used to compare the generated construction standard value with the temperature control index of concrete construction. If the temperature control index does not reach the set construction standard value, the operation in the temperature control adjustment strategy is repeated to adjust the construction equipment; Generate temperature control adjustment strategies and adjust relevant parameters of construction equipment based on the following methods: Adjust the heating device. Adjust the working mode of the heating device according to the temperature data of the inner and outer surfaces of the concrete. 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 and prevent the concrete from cracking due to overheating. Energy consumption equipment operation optimization: when the internal and external surface temperatures of the concrete exceed the standard temperature value for concrete pouring, the fan speed is increased to promote cooling; when the internal and external surface temperatures of the concrete are lower than the standard temperature value for concrete pouring, the fan speed is reduced 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 coefficient, 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; Compare the generated construction standard value with the temperature control index of concrete construction. If the temperature control index does not reach the set construction standard value, repeat the operation in the temperature control adjustment strategy. The logic is as follows: Among them, χ represents the logical judgment value for judging whether the temperature control index has reached the set construction standard value. When χ = 0, it indicates that the temperature control index has reached the construction standard value and no adjustment of the construction equipment is required; when χ = 1, it indicates that the temperature control index has not reached the construction standard value and the construction equipment needs to be adjusted.

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 methods: The concrete surface inside the underground pipe gallery is regarded as the outer surface of the concrete, and the concrete surface outside the underground pipe gallery is regarded as the inner surface of the concrete. n temperature sensors are evenly installed on the outer surface of the concrete to measure the temperature of multiple points on the outer surface of the concrete. The average temperature of each point is regarded as the outer surface temperature of the concrete. 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 ; The hot wire anemometer is installed in the center of the air flow. The probe of the hot wire anemometer should be parallel to the direction of the airflow and should be placed in an area with uniform flow rate. During measurement, the hot wire is heated by current. When the airflow passes 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 airflow velocity V 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 concrete setting temperature index, construction environment quality index and construction energy efficiency index are generated based on the following method: 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 changes in the internal and surface temperatures and the maximum temperature that the concrete can reach. The formula is: Among them, I c Indicates the concrete setting temperature index, T allow is the maximum allowable temperature of concrete; The Construction Environment Quality Index is used to assess the impact of the construction environment. It takes into account 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 of the construction process. It calculates the ratio of the actual energy consumption of construction equipment to the total power and uses this 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 generated based on 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, 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 flow rate during construction Energy consumption standard value E set , the construction standard value is calculated using the weighted method, based on the formula: 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.

6. 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 5, 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 construction standard value with the temperature control index of concrete construction. If the temperature control index does not reach the set construction standard value, repeat the operation in the temperature control adjustment strategy and adjust the construction equipment; Generate temperature control adjustment strategies and adjust relevant parameters of construction equipment based on the following methods: Adjust the heating device. Adjust the working mode of the heating device according to the temperature data of the inner and outer surfaces of the concrete. 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 and prevent the concrete from cracking due to overheating. Energy consumption equipment operation optimization: when the internal and external surface temperatures of the concrete exceed the standard temperature value for concrete pouring, the fan speed is increased to promote cooling; when the internal and external surface temperatures of the concrete are lower than the standard temperature value for concrete pouring, the fan speed is reduced 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 coefficient, 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; Compare the generated construction standard value with the temperature control index of concrete construction. If the temperature control index does not reach the set construction standard value, repeat the operation in the temperature control adjustment strategy. The logic is as follows: Among them, χ represents the logical judgment value for judging whether the temperature control index has reached the set construction standard value. When χ = 0, it indicates that the temperature control index has reached the construction standard value and no adjustment of the construction equipment is required; when χ = 1, it indicates that the temperature control index has not reached the construction standard value and the construction equipment needs to be adjusted.

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