Temperature control method for mass concrete structure

Abstract

The invention provides a temperature control method for a mass concrete structure, and relates to the technical field of concrete pouring construction, and the method comprises the following steps: carrying out the regional division of the mass concrete structure, and obtaining a first data set and a second data set of each to-be-detected region in real time; the first data set comprises the concrete temperature and the concrete temperature change rate of the mass concrete structure, and the second data set comprises the cooling water temperature and the cooling water flow of the cooling water; based on the first data set and the second data set, a structural performance parameter set of the mass concrete structure at the moment is obtained, and the structural performance parameter set comprises structural stress, strain, a safety index and a stability index; and according to the structural performance parameter set, generating corresponding cooling water target temperature, cooling water target flow and target cooling duration for adjusting the circulation process of the cooling water so as to control the temperature of the mass concrete structure. According to the scheme, the temperature control accuracy in the mass concrete cooling process is guaranteed, and the situation of concrete cracking is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of concrete pouring construction, and in particular to a temperature control method for a large-volume concrete structure. Background Art

[0002] As a major component of buildings, concrete structures have gradually increased in requirements for the volume, mechanical properties, safety level, and aesthetics of concrete structures with the development of special functional infrastructure construction such as long-span bridges, high-rise buildings, nuclear power plants, and reservoir dams. This is especially reflected in the increase in the volume of concrete structures, from which the concept of mass concrete has been derived. Compared with ordinary concrete structures, mass concrete structures have larger cross-sectional dimensions, stronger bearing capacity, better seismic resistance, and higher construction requirements.

[0003] In the prior art, before large-volume concrete pouring construction is carried out, cooling pipelines that are coiled layer by layer in the height direction need to be pre-arranged. Cooling water flows in the cooling pipelines to take away the heat released by the concrete in the hydration reaction. However, the flow rate of cooling water in the cooling pipelines and the cooling time are controlled based on manual experience. The cooling strategy is not adjusted in real time during the cooling process. The temperature control accuracy of large-volume concrete structures is poor, and concrete cracks may occur in some locations. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide a temperature control method for a mass concrete structure, which is used to control a cooling system, wherein the cooling system at least includes a cooling pipeline coiled in the mass concrete structure, and the cooling pipeline is used to circulate cooling water; the control method comprises the following steps: Dividing the massive concrete structure into regions so that the massive concrete structure has a plurality of regions to be tested that are arranged in sequence; Acquire a first data set and a second data set of each of the test areas in real time; the first data set includes at least the concrete temperature and the concrete temperature change rate of the mass concrete structure, and the second data set includes at least the cooling water temperature and the cooling water flow rate of the cooling water; Based on the first data set and the second data set, a structural performance parameter set of the massive concrete structure at the moment is obtained, wherein the structural performance parameter set includes structural stress, strain, safety index, and stability index; According to the structural performance parameter set of the massive concrete structure, corresponding cooling water circulation parameters are generated, and the cooling water circulation parameters are used to adjust the circulation process of cooling water to control the temperature of the massive concrete structure; the cooling water circulation parameters at least include a cooling water target temperature, a cooling water target flow rate, and a target cooling time.

[0005] According to the technical solution provided by the present application, the real-time acquisition of the first data set and the second data set of each of the areas to be tested includes at least the following steps: Evenly setting a plurality of first calibration points in the mass concrete structure within the area to be measured; traversing all the areas to be measured to obtain the first calibration points in all the areas to be measured; At intervals of a first preset time, obtaining the concrete temperature at each of the first calibration points; Based on the concrete temperature at two acquisition moments of the same first calibration point, calculating the concrete temperature change rate of each first calibration point; The concrete temperatures and the concrete temperature change rates of all the first calibration points constitute the first data set.

[0006] According to the technical solution provided by the present application, the real-time acquisition of the first data set and the second data set of each of the areas to be tested further includes the following steps: A plurality of second calibration points are evenly arranged on the cooling pipeline in the area to be measured; all the areas to be measured are traversed to obtain the second calibration points in all the areas to be measured; the position of each of the second calibration points is mapped to the position of one of the first calibration points; The cooling water temperature and the cooling water flow rate at each of the second calibration points are obtained, and the cooling water temperatures and the cooling water flow rates at all the second calibration points constitute the second data set.

[0007] According to the technical solution provided by the present application, obtaining the structural performance parameter set of the massive concrete structure at the moment based on the first data set and the second data set comprises at least the following steps: Based on the first data set and the second data set, a finite element method is used to simulate the temperature field to generate a concrete temperature field distribution of a large-volume concrete structure; Based on the concrete temperature field distribution, a target distribution map is obtained, wherein the target distribution map represents the thermal stress and thermal deformation distribution of the concrete structure; The structural stress and strain of the massive concrete structure are read from the target distribution diagram.

[0008] According to the technical solution provided by the present application, after reading the structural stress and strain of the massive concrete structure in the target distribution map, the following steps are also included: Retrieving a mass concrete construction standard, wherein the mass concrete construction standard at least includes a maximum structural stress and a maximum strain within a safety range; A safety index is obtained based on the structural stress and the maximum structural stress value, and a stability index is obtained based on the strain and the maximum strain value.

[0009] According to the technical solution provided by the present application, generating corresponding cooling water circulation parameters according to the structural performance parameter set of the massive concrete structure comprises at least the following steps: The structural performance parameter set is combined with Fourier's heat transfer law to obtain an equivalent heat conduction equation; Based on the equivalent heat conduction equation and in combination with the hydration heat function, the relevant heat of the massive concrete structure is predicted, wherein the relevant heat at least includes the heat taken away by the cooling water in the cooling pipeline during the circulation process and the heat released by the concrete during the hydration reaction; In combination with the first law of thermodynamics, the relevant heat is introduced into the equivalent heat conduction equation to obtain the expected cooling water flow rate and the expected cooling time; the expected cooling water flow rate is used as the cooling water target flow rate, and the expected cooling time is used as the target cooling time.

[0010] According to the technical solution provided by the present application, the cooling system further includes a cooling water tank for containing cooling water, and an electromagnetic water valve for controlling the flow rate of cooling water in the cooling pipeline; the method further includes: Get the lowest temperature of the external environment in real time; After generating the corresponding cooling water circulation parameters according to the structural performance parameter set of the massive concrete structure, the following steps are also included: When it is determined that the difference between the concrete temperature at each of the first calibration points and the lowest temperature of the external environment is greater than a first preset threshold, and the concrete temperature change rate at each of the first calibration points is greater than a second preset threshold, and the absolute value of the difference between the concrete temperature at each of the first calibration points and the cooling water temperature at the second calibration point having a mapping relationship therewith is less than or equal to a third preset threshold, the electromagnetic water valve is opened at the cooling water target flow rate, and the electromagnetic water valve is closed after the target cooling time.

[0011] According to the technical solution provided by the present application, a heating element is provided on the cooling water tank; after generating the corresponding cooling water circulation parameters according to the structural performance parameter set of the massive concrete structure, the following steps are also included: When it is determined that the difference between the concrete temperature at any one of the first calibration points and the cooling water temperature at the second calibration point having a mapping relationship therewith is greater than the third preset threshold, the heating element is controlled to turn on so that the cooling water in the cooling water tank is heated to the cooling water target temperature.

[0012] According to the technical solution provided by the present application, a heat dissipation element is also provided on the top of the cooling water tank; after generating the corresponding cooling water circulation parameters according to the structural performance parameter set of the massive concrete structure, the following steps are also included: When it is determined that the difference between the cooling water temperature of any one of the second calibration points and the concrete temperature of the first calibration point having a mapping relationship therewith is greater than the third preset threshold, the heat dissipation element is controlled to be turned on so that the cooling water in the cooling water tank is cooled to the cooling water target temperature.

[0013] According to the technical solution provided by the present application, after generating the corresponding cooling water circulation parameters according to the structural performance parameter set of the massive concrete structure, the following steps are also included: When it is determined that the difference between the concrete temperature at each of the first calibration points and the lowest temperature of the external environment is less than or equal to the first preset threshold, the electromagnetic water valve is closed.

[0014] Compared with the prior art, the beneficial effect of the present application is that before cooling water is passed, a structural performance parameter set that can characterize the mechanical properties of the large-volume concrete structure is first obtained according to the concrete temperature (initial state), the concrete temperature change rate (the change rate of the concrete temperature under the influence of the ambient temperature in the initial state), and the cooling water temperature (initial state) of the large-volume concrete structure; cooling water circulation parameters matching the mechanical properties of the large-volume concrete structure are generated according to the structural performance parameter set; cooling water is passed with the cooling water circulation parameters; and real-time monitoring is still performed in the cooling process using this method; the cooling water circulation parameters are adjusted in real time through the monitored concrete temperature (in the cooling process), the concrete temperature change rate (the change rate of the concrete temperature under the influence of the ambient temperature and cooling water cooling), the cooling water temperature (in the cooling process), and the cooling water flow rate, so that the cooling process matches the real-time mechanical properties of the large-volume concrete structure, thereby ensuring the accuracy of temperature control during the cooling process and reducing concrete cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A flow chart of the steps of the temperature control method of a large-volume concrete structure provided in this application. DETAILED DESCRIPTION

[0016] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0017] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0018] Example 1 This embodiment provides a temperature control system for a large-volume concrete structure, the control system comprising: The data acquisition unit monitors the temperature of each calibration point, ambient temperature, cooling water temperature, and cooling water flow rate in real time during the construction of the large-volume concrete structure, and transmits the monitoring data to the control processing unit; A control processing unit stores, analyzes and processes the monitoring data, issues an abnormality alarm, and generates a first data set and a second data set, a structural performance parameter set of the mass concrete structure, and a cooling water circulation parameter; The cooling unit exchanges the heat generated by the hydration reaction during the construction of the concrete structure to the external environment and receives the cooling water flow parameters issued by the control processing unit. Furthermore, the data acquisition unit collects concrete temperature data by arranging wireless temperature sensors at various calibration points of the concrete structure, arranges wireless temperature sensors on the surface of the concrete formwork to collect ambient temperature, arranges temperature sensors at the input end and output end of the cooling water pipeline, and at the mapping positions between the middle and the calibration points of the concrete structure to collect cooling water temperature, arranges flow meters in the cooling water circulation pipeline to collect cooling water flow, and uploads various monitoring data to the control processing unit through the Internet of Things transmission protocol.

[0019] Furthermore, the cooling unit includes a PID feedback controller, an electromagnetic water valve, a water pump, and a cooling pipeline.

[0020] Example 2 Based on Example 1, as mentioned in the background technology, in view of the problems in the prior art, this embodiment proposes a temperature control method for a large-volume concrete structure, which is used to control a cooling system, wherein the cooling system at least includes a cooling pipeline coiled in the large-volume concrete structure, and the cooling pipeline is used to circulate cooling water; please refer to Figure 1 As shown, the control method includes the following steps: S1. Dividing the massive concrete structure into regions so that the massive concrete structure has a plurality of regions to be tested that are arranged in sequence; Optionally, the large-volume concrete structure is a large-volume cubic structure after pouring, and is divided into a plurality of test areas of small-volume cubic structures, and a plurality of calibration points are evenly distributed on each of the test areas; S2, acquiring in real time a first data set and a second data set of each of the areas to be tested; the first data set at least includes the concrete temperature and the concrete temperature change rate of the large-volume concrete structure, and the second data set at least includes the cooling water temperature and the cooling water flow rate of the cooling water; Furthermore, the real-time acquisition of the first data set and the second data set of each of the areas to be tested includes at least the following steps: Evenly setting a plurality of first calibration points in the mass concrete structure within the area to be measured; traversing all the areas to be measured to obtain the first calibration points in all the areas to be measured; Specifically, each of the first calibration points is provided with a wireless temperature sensor; At intervals of a first preset time, obtaining the concrete temperature at each of the first calibration points; By reading the reading of the temperature sensor at each first calibration point, the concrete temperature at each first calibration point is obtained; Based on the concrete temperature at two acquisition moments of the same first calibration point, calculating the concrete temperature change rate of each first calibration point; Specifically, for example, at time T3, the concrete temperature at the first calibration point is C1, at time T4, the concrete temperature at the first calibration point is C2, and the concrete temperature change rate at the first calibration point is the quotient of the absolute value of C1-C2 and T4-T3; The concrete temperatures and the concrete temperature change rates of all the first calibration points constitute the first data set.

[0021] Specifically, the first data set includes the concrete temperature and the concrete temperature change rate of each first calibration point; Furthermore, the real-time acquisition of the first data set and the second data set of each of the areas to be tested further includes the following steps: A plurality of second calibration points are evenly arranged on the cooling pipeline in the area to be measured; all the areas to be measured are traversed to obtain the second calibration points in all the areas to be measured; the position of each of the second calibration points is mapped to the position of one of the first calibration points; Specifically, a set of second calibration points and first calibration points having the mapping relationship can be understood as cooling water at the position of the second calibration point can take away the heat of the large structure concrete at the position of the first calibration point having the mapping relationship therewith.

[0022] The cooling water temperature and the cooling water flow rate at each of the second calibration points are obtained, and the cooling water temperatures and the cooling water flow rates at all the second calibration points constitute the second data set.

[0023] S3. Based on the first data set and the second data set, a structural performance parameter set of the massive concrete structure at that moment is obtained, wherein the structural performance parameter set includes structural stress, strain, safety index, and stability index; Specifically, the Internet of Things technology is used to monitor the temperature of the calibration point and its change rate, and the ambient temperature in real time and transmit them to the control module in real time to generate the first data set and the second data set initially collected on site; then the machine learning algorithm is used to remove invalid data from all the data to generate the valid first data set and the second data set; Furthermore, the process of generating a valid first data set and a second data set is as follows: normalizing the abnormal data and missing data in the initially collected first data set and the second data set, extracting data features in combination with the heat release law of the hydration reaction of large-volume concrete, thermodynamic parameters and the first law of thermodynamics, selecting a linear regression machine learning algorithm for data noise reduction, taking the initially collected first data set and the second data set at each calibration point as data sets, dividing the data sets into a training set, a validation set and a test set, training, validating and testing the linear regression machine learning algorithm, and generating a valid first data set and a second data set after the data meet the expected standards and requirements.

[0024] S4. Generate corresponding cooling water circulation parameters according to the structural performance parameter set of the mass concrete structure, wherein the cooling water circulation parameters are used to adjust the circulation process of cooling water to control the temperature of the mass concrete structure; the cooling water circulation parameters at least include a cooling water target temperature, a cooling water target flow rate, and a target cooling time.

[0025] Specifically, the mass concrete is divided into regions in combination with the BIM model. Before cooling and water circulation, a structural performance parameter set that can characterize the mechanical properties of the mass concrete structure is first obtained according to the concrete temperature (initial state), concrete temperature change rate (the rate of change of concrete temperature under the influence of ambient temperature in the initial state), and cooling water temperature (initial state) of the mass concrete structure. Cooling water circulation parameters matching the mechanical properties of the mass concrete structure are generated according to the structural performance parameter set, and cooling water is circulated with the cooling water circulation parameters. During the cooling process, real-time monitoring is still performed using this method. The cooling water circulation parameters are adjusted in real time based on the concrete temperature (in the cooling process), concrete temperature change rate (the rate of change of concrete temperature under the influence of ambient temperature and cooling water cooling), cooling water temperature (in the cooling process), and cooling water flow rate obtained by monitoring. Specifically, the cooling water flow rate in the cooling water circulation pipeline is adjusted in real time through a PID feedback controller.

[0026] Furthermore, the cooling system also includes an electromagnetic water valve. After generating the corresponding cooling water circulation parameters, the PID feedback controller uses the cooling water target flow generated by the control processing unit as the input flow, and monitors the real-time output flow in the cooling pipeline in real time. The PID feedback controller adjusts the opening and closing degree of the electromagnetic water valve by comparing the error value between the input flow and the real-time output flow.

[0027] Furthermore, the opening and closing degree of the electromagnetic water valve is adjusted by controlling the three parameters of the proportional coefficient vp, the integral coefficient vi, and the differential coefficient vd. The proportional coefficient vp is adjusted to make the output flow close to the input flow, the integral coefficient vi is adjusted to eliminate the error between the output flow and the input flow, and the differential coefficient vd is adjusted to reduce the error range between the output flow and the input flow. The degree of automation and accuracy of temperature control of large-volume concrete in the cooling process are further improved, and the influence and harm of the heat generated by the concrete hydration reaction on the structure are reduced, thereby avoiding cracking.

[0028] In a preferred embodiment, obtaining the structural performance parameter set of the massive concrete structure at the moment based on the first data set and the second data set comprises at least the following steps: Based on the first data set and the second data set, a finite element method is used to simulate the temperature field to generate a concrete temperature field distribution of a large-volume concrete structure; Based on the concrete temperature field distribution, a target distribution map is obtained, wherein the target distribution map represents the thermal stress and thermal deformation distribution of the concrete structure; The structural stress and strain of the massive concrete structure are read from the target distribution diagram.

[0029] In a preferred embodiment, after reading the structural stress and strain of the massive concrete structure in the target distribution map, the method further includes the following steps: Retrieving a mass concrete construction standard, wherein the mass concrete construction standard at least includes a maximum structural stress and a maximum strain within a safety range; A safety index is obtained based on the structural stress and the maximum structural stress value, and a stability index is obtained based on the strain and the maximum strain value.

[0030] In a preferred embodiment, generating corresponding cooling water circulation parameters according to the structural performance parameter set of the massive concrete structure comprises at least the following steps: The structural performance parameter set is combined with Fourier's heat transfer law to obtain an equivalent heat conduction equation; Based on the equivalent heat conduction equation and in combination with the hydration heat function, the relevant heat of the massive concrete structure is predicted, wherein the relevant heat at least includes the heat taken away by the cooling water in the cooling pipeline during the circulation process and the heat released by the concrete during the hydration reaction; In combination with the first law of thermodynamics, the relevant heat is introduced into the equivalent heat conduction equation to obtain the expected cooling water flow rate and the expected cooling time; the expected cooling water flow rate is used as the cooling water target flow rate, and the expected cooling time is used as the target cooling time.

[0031] In a preferred embodiment, the cooling system further comprises a cooling water tank for containing cooling water, and an electromagnetic water valve for controlling the flow rate of cooling water in the cooling pipeline; the method further comprises: Get the lowest temperature of the external environment in real time; After generating the corresponding cooling water circulation parameters according to the structural performance parameter set of the massive concrete structure, the following steps are also included: When it is determined that the difference between the concrete temperature at each of the first calibration points and the lowest temperature of the external environment is greater than a first preset threshold, and the concrete temperature change rate at each of the first calibration points is greater than a second preset threshold, and the absolute value of the difference between the concrete temperature at each of the first calibration points and the cooling water temperature at the second calibration point having a mapping relationship therewith is less than or equal to a third preset threshold, the electromagnetic water valve is opened at the cooling water target flow rate, and the electromagnetic water valve is closed after the target cooling time.

[0032] Specifically, the first preset threshold is 20°C, the second preset threshold is 2°C / h, and the third preset threshold is 25°C.

[0033] In a preferred embodiment, a heating element is provided on the cooling water tank; after generating the corresponding cooling water circulation parameters according to the structural performance parameter set of the massive concrete structure, the following steps are also included: When it is determined that the difference between the concrete temperature at any one of the first calibration points and the cooling water temperature at the second calibration point having a mapping relationship therewith is greater than the third preset threshold, the heating element is controlled to turn on so that the cooling water in the cooling water tank is heated to the cooling water target temperature.

[0034] In a preferred embodiment, a heat dissipation element is further provided on the top of the cooling water tank; after generating the corresponding cooling water circulation parameters according to the structural performance parameter set of the massive concrete structure, the following steps are also included: When it is determined that the difference between the cooling water temperature of any one of the second calibration points and the concrete temperature of the first calibration point having a mapping relationship therewith is greater than the third preset threshold, the heat dissipation element is controlled to be turned on so that the cooling water in the cooling water tank is cooled to the cooling water target temperature.

[0035] In a preferred embodiment, after generating the corresponding cooling water circulation parameters according to the structural performance parameter set of the massive concrete structure, the following steps are also included: When it is determined that the difference between the concrete temperature at each of the first calibration points and the lowest temperature of the external environment is less than or equal to the first preset threshold, the electromagnetic water valve is closed.

[0036] Specifically, when the difference between the concrete temperature of each first calibration point of the mass concrete structure and the lowest temperature of the external environment |T1-T2|≤20°C, the hydration reaction inside the concrete releases heat to produce temperature changes and thermal stress, and the thermal stress is less than the tensile strength of the concrete, the mass concrete structure will not produce cracks and damage, the control module will not send a cooling signal, and the electromagnetic water valve is in a closed state; When the difference between the concrete temperature at each first calibration point and the lowest temperature of the external environment is T1-T2>20°C, there is a high-temperature area inside the concrete structure, the hydration reaction inside the concrete releases heat to produce temperature changes and thermal stress, the thermal stress is greater than the tensile strength of the concrete, and cracks are generated in the large-volume concrete structure. The control module sends a cooling signal, the PID controller receives the cooling signal to regulate the cooling water flow, and the cooling water is introduced into the cooling pipeline to cool the concrete; When the difference between the lowest temperature of the external environment and the concrete temperature of the first calibration point is greater than 20°C (T2-T1), the control module does not send a cooling signal, and the solenoid water valve is in a closed state, but heating and insulation measures are required for the concrete structure.

[0037] Furthermore, the absolute value of the difference between the concrete temperature at the first calibration point and the cooling water temperature at the second calibration point having a mapping relationship therewith |T1-T3|≤25°C, the cooling water temperature is within the normal working range, the temperature difference causes the thermal stress generated in the concrete to be less than the tensile strength of the concrete, the large-volume concrete structure will not be cracked and damaged, and the cooling water circulation pipeline can perform cooling work normally; When T1-T3>25℃, the cooling water temperature is too low, the temperature difference causes the concrete to produce thermal stress greater than the tensile strength of the concrete, and cracks appear in the large-volume concrete structure. The cooling water needs to be heated to the normal operating temperature range. At this time, the heating component is turned on to heat the cooling water in the cooling water tank. After it reaches the target cooling water temperature, it flows into the cooling pipeline.

[0038] When T3-T1>25℃, the cooling water temperature is too high, the temperature difference causes the concrete to produce thermal stress greater than the concrete tensile strength, and cracks appear in the large-volume concrete structure. The cooling water needs to be cooled to the normal operating temperature range. At this time, the heat dissipation component is turned on to cool the cooling water in the cooling water tank. After it drops to the cooling water target temperature, it flows into the cooling pipeline.

[0039] The concrete temperature change rate △T of each first calibration point is ≤2℃ / h, the thermal stress and temperature stress generated by the concrete temperature change are less than the concrete tensile strength, and the large-volume concrete structure will not be cracked or damaged; the concrete temperature change rate △T of the first calibration point is >2℃ / h, the concrete structure temperature change rate exceeds the specified range, the temperature shows a gradual increase trend, the thermal stress and temperature stress generated by the concrete temperature change are greater than the concrete tensile strength, and the large-volume concrete structure will be cracked or damaged, the control module sends a cooling signal, the PID controller receives the cooling signal to regulate the cooling water flow, and the cooling water circulation pipeline passes water to cool the concrete; The temperature change rate △T of each of the first calibration points is <-2℃ / h, the temperature change rate exceeds the specified range, the temperature shows a gradual decreasing trend, the thermal stress and temperature stress generated by the temperature change of the concrete are greater than the tensile strength of the concrete, the large-volume concrete structure will have cracks and damage, and heating and insulation measures are required for the large-volume concrete structure.

[0040] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A temperature control method for a mass concrete structure, used for controlling a cooling system, wherein the cooling system comprises at least a cooling pipeline coiled in the mass concrete structure, wherein the cooling pipeline is used for circulating cooling water; characterized in that: The control method comprises the following steps: Dividing the massive concrete structure into regions so that the massive concrete structure has a plurality of regions to be tested that are arranged in sequence; Acquire a first data set and a second data set of each of the test areas in real time; the first data set includes at least the concrete temperature and the concrete temperature change rate of the mass concrete structure, and the second data set includes at least the cooling water temperature and the cooling water flow rate of the cooling water; Based on the first data set and the second data set, a structural performance parameter set of the massive concrete structure at the moment is obtained, wherein the structural performance parameter set includes structural stress, strain, safety index, and stability index; According to the structural performance parameter set of the massive concrete structure, corresponding cooling water circulation parameters are generated, and the cooling water circulation parameters are used to adjust the circulation process of cooling water to control the temperature of the massive concrete structure; the cooling water circulation parameters at least include a cooling water target temperature, a cooling water target flow rate, and a target cooling time.

2. The temperature control method of a large volume concrete structure according to claim 1, characterized in that: The real-time acquisition of the first data set and the second data set of each of the areas to be tested includes at least the following steps: Evenly setting a plurality of first calibration points in the mass concrete structure within the area to be measured; traversing all the areas to be measured to obtain the first calibration points in all the areas to be measured; At intervals of a first preset time, obtaining the concrete temperature at each of the first calibration points; Based on the concrete temperature at two acquisition moments of the same first calibration point, calculating the concrete temperature change rate of each first calibration point; The concrete temperatures and the concrete temperature change rates of all the first calibration points constitute the first data set.

3. The temperature control method of a large volume concrete structure according to claim 2, characterized in that: The real-time acquisition of the first data set and the second data set of each of the areas to be tested further includes the following steps: A plurality of second calibration points are evenly arranged on the cooling pipeline in the area to be measured; all the areas to be measured are traversed to obtain the second calibration points in all the areas to be measured; the position of each of the second calibration points is mapped to the position of one of the first calibration points; The cooling water temperature and the cooling water flow rate at each of the second calibration points are obtained, and the cooling water temperatures and the cooling water flow rates at all the second calibration points constitute the second data set.

4. The temperature control method of a large volume concrete structure according to claim 3, characterized in that: The obtaining of the structural performance parameter set of the massive concrete structure at the moment based on the first data set and the second data set comprises at least the following steps: Based on the first data set and the second data set, a finite element method is used to simulate the temperature field to generate a concrete temperature field distribution of a large-volume concrete structure; Based on the concrete temperature field distribution, a target distribution map is obtained, wherein the target distribution map represents the thermal stress and thermal deformation distribution of the concrete structure; The structural stress and strain of the massive concrete structure are read from the target distribution diagram.

5. The temperature control method of a large volume concrete structure according to claim 4, characterized in that: After reading the structural stress and strain of the massive concrete structure in the target distribution map, the method further includes the following steps: Retrieving a mass concrete construction standard, wherein the mass concrete construction standard at least includes a maximum structural stress and a maximum strain within a safety range; A safety index is obtained based on the structural stress and the maximum value of the structural stress, and a stability index is obtained based on the strain and the maximum value of the strain.

6. The temperature control method of a large volume concrete structure according to claim 1, characterized in that: Generating corresponding cooling water circulation parameters according to the structural performance parameter set of the massive concrete structure comprises at least the following steps: The structural performance parameter set is combined with Fourier's heat transfer law to obtain an equivalent heat conduction equation; Based on the equivalent heat conduction equation and in combination with the hydration heat function, the relevant heat of the massive concrete structure is predicted, wherein the relevant heat at least includes the heat taken away by the cooling water in the cooling pipeline during the circulation process and the heat released by the concrete during the hydration reaction; In combination with the first law of thermodynamics, the relevant heat is introduced into the equivalent heat conduction equation to obtain the expected cooling water flow rate and the expected cooling time; the expected cooling water flow rate is used as the cooling water target flow rate, and the expected cooling time is used as the target cooling time.

7. The temperature control method of a large concrete structure according to claim 3, characterized in that: The cooling system further includes a cooling water tank for containing cooling water, and an electromagnetic water valve for controlling the flow of cooling water in the cooling pipeline; the method further includes: Get the lowest temperature of the external environment in real time; After generating the corresponding cooling water circulation parameters according to the structural performance parameter set of the massive concrete structure, the following steps are also included: When it is determined that the difference between the concrete temperature at each of the first calibration points and the lowest temperature of the external environment is greater than a first preset threshold, and the concrete temperature change rate at each of the first calibration points is greater than a second preset threshold, and the absolute value of the difference between the concrete temperature at each of the first calibration points and the cooling water temperature at the second calibration point having a mapping relationship therewith is less than or equal to a third preset threshold, the electromagnetic water valve is opened at the cooling water target flow rate, and the electromagnetic water valve is closed after the target cooling time.

8. The temperature control method of a large volume concrete structure according to claim 7, characterized in that: The cooling water tank is provided with a heating element; after generating the corresponding cooling water circulation parameters according to the structural performance parameter set of the massive concrete structure, the following steps are also included: When it is determined that the difference between the concrete temperature at any one of the first calibration points and the cooling water temperature at the second calibration point having a mapping relationship therewith is greater than the third preset threshold, the heating element is controlled to be turned on so that the cooling water in the cooling water tank is heated to the cooling water target temperature.

9. The temperature control method of a large concrete structure according to claim 7, characterized in that: The top of the cooling water tank is also provided with a heat dissipation element; after generating the corresponding cooling water circulation parameters according to the structural performance parameter set of the massive concrete structure, the following steps are also included: When it is determined that the difference between the cooling water temperature of any one of the second calibration points and the concrete temperature of the first calibration point having a mapping relationship therewith is greater than the third preset threshold, the heat dissipation element is controlled to be turned on so that the cooling water in the cooling water tank is cooled to the cooling water target temperature.

10. The temperature control method of a large concrete structure according to claim 7, characterized in that: After generating the corresponding cooling water circulation parameters according to the structural performance parameter set of the massive concrete structure, the following steps are also included: When it is determined that the difference between the concrete temperature at each of the first calibration points and the lowest temperature of the external environment is less than or equal to the first preset threshold, the electromagnetic water valve is closed.

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