CN116283354B - Intelligent dynamic temperature control method for concrete - Google Patents
Intelligent dynamic temperature control method for concrete Download PDFInfo
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- CN116283354B CN116283354B CN202310306275.7A CN202310306275A CN116283354B CN 116283354 B CN116283354 B CN 116283354B CN 202310306275 A CN202310306275 A CN 202310306275A CN 116283354 B CN116283354 B CN 116283354B
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- 238000000034 method Methods 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 101
- 239000000498 cooling water Substances 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims description 33
- 238000001816 cooling Methods 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 230000002787 reinforcement Effects 0.000 claims description 12
- 230000000630 rising effect Effects 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 4
- 230000033228 biological regulation Effects 0.000 abstract description 2
- 238000006703 hydration reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0075—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability making use of a decrease in temperature
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0082—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability making use of a rise in temperature, e.g. caused by an exothermic reaction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0263—Hardening promoted by a rise in temperature
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
Abstract
The intelligent dynamic temperature control method for the concrete provided by the invention has the advantages that the temperature control is realized by arranging the cooling water pipe, the real-time temperature of the concrete is measured by arranging the temperature sensor, the state discrimination is carried out by the temperature acquired by the temperature sensor, different temperature regulation methods are provided, the dynamic temperature control is realized, the adaptability of the water temperature of the water and the internal temperature field of the concrete is improved, the occurrence of temperature cracks is avoided, and the intelligent dynamic temperature control method for the concrete has a strong guiding significance for the temperature construction of the concrete.
Description
Technical Field
The invention relates to the field of engineering construction, in particular to an intelligent dynamic temperature control method for concrete.
Background
The concrete is the most common building construction material in modern engineering, and its wide application is in fields such as water conservancy, civil engineering, traffic, building, and the cementing material in the concrete is because can take place hydration reaction, produces certain heat after pouring is accomplished, and above-mentioned heat gathers in the concrete structure inside, easily causes the inside high temperature of concrete, and surface temperature is too low, and inside and outside difference in temperature can cause the concrete to appear certain temperature stress, to the great bulky concrete of structure size, aggravates this temperature stress more, once temperature stress exceeds the tensile limit of concrete, can produce temperature crack, influences the normal use of structure.
The method has very important practical significance for concrete structures, in particular to large-volume concrete engineering, and adopts necessary temperature control measures to control the temperature. The existing temperature control measures mostly adopt methods of optimizing concrete proportion, covering heat insulation materials, passing through cooling water pipes, jumping bins, layering and blocking, and the like, and can better take away heat generated in the cooling water pipes and reduce internal and external temperature differences, so that the method is widely applied.
The cooling water pipe can reduce the internal heat of the concrete, but the cooling water pipe cooling of the concrete at the present stage controls the temperature of the water inlet and the water outlet, and most of the cooling water pipe cooling adopts a quantitative constant temperature method, and does not adopt a dynamic temperature control method, and the temperature control method can lead the concrete to have a better temperature control effect, but also easily causes damage caused by overlarge local temperature gradient in the concrete.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an intelligent dynamic temperature control method for concrete.
The invention provides an intelligent dynamic temperature control method for concrete, wherein the concrete is large-volume concrete, a cooling water pipe is buried in the concrete during pouring, the cooling water pipe comprises a water inlet and a water outlet, a plurality of temperature sensors are buried in the concrete, the height of a concrete layer is not less than 1m and not more than 2m, the concrete is of a cuboid structure, and the maximum side length of the cuboid is not more than 20m; the dynamic temperature control method comprises the following steps:
s1: the method comprises the steps of treating a foundation, arranging a sand cushion layer on the treated foundation, arranging a gravel cushion layer on the sand cushion layer, arranging a plurality of longitudinal steel bars on the gravel cushion layer, enabling the longitudinal steel bars to sequentially penetrate through the gravel cushion layer and the sand cushion layer, extending into the foundation, and binding the longitudinal steel bars to form a steel bar cage;
s2: two layers of cooling water pipes are arranged in the reinforcement cage and are respectively and fixedly connected with the reinforcement, the cooling water pipes are respectively positioned at the upper part and the lower part of the concrete, and the dimension between the cooling water pipes and the bottom and the top of the concrete is not less than 20cm; each layer of cooling water pipe comprises a water inlet and a water outlet, the water inlet is provided with a first water tank, the water inlet is connected with the first water tank through a water pump, the water outlet is provided with a second water tank, and a thermometer, a heating device and a refrigerating device are arranged in the first water tank;
s3: the middle layer position department of concrete sets up a plurality of temperature sensor, temperature sensor includes central temperature sensor and peripheral temperature sensor, peripheral temperature sensor symmetrical arrangement is set up to 4 altogether, is located respectively in four limit rectangular directions in concrete middle layer, peripheral temperature sensor is apart from concrete surface distance is not less than 10cm, temperature sensor all fixes on the steel reinforcement cage, and the fixed mode is: a positioning rod is arranged on the reinforcement cage, a plastic sleeve is fixed on the positioning rod, a temperature sensor is arranged in the plastic sleeve, and the temperature sensors are all connected with a temperature measuring device outside the concrete through communication wires;
s4: after the arrangement of the temperature sensor and the cooling water pipe is completed, pouring concrete, obtaining the temperature value of the temperature sensor, starting a water pump to cool water, and performing dynamic temperature control, wherein the method for performing dynamic temperature control comprises the following steps of:
s41: in the temperature rising stage of the central temperature sensor, the temperature of the central temperature sensor is obtained and is used as a first standard temperature, the first standard temperature minus a first set value is made to be a first minimum temperature, the first standard temperature minus a second set value is made to be a first maximum temperature, if the temperature obtained by a thermometer in a first water tank is lower than the first minimum temperature, a heating device is started, if the temperature obtained by the thermometer in the first water tank is higher than the maximum temperature, a refrigerating device is started, and if the temperature obtained by the thermometer in the first water tank is between the first minimum temperature and the first maximum temperature, the refrigerating device can work normally;
s42: in the cooling stage of the central temperature sensor, acquiring the temperatures of 4 peripheral temperature sensors, taking an average value of the temperatures as a second standard temperature, enabling the second standard temperature minus a third set value to be a second minimum temperature, enabling the second standard temperature minus a fourth set value to be a second maximum temperature, starting a heating device if the temperature acquired by a thermometer in a second water tank is lower than the second minimum temperature, starting a refrigerating device if the temperature acquired by the thermometer in the second water tank is higher than the second maximum temperature, and normally working if the temperature acquired by the thermometer in the second water tank is between the second minimum temperature and the second maximum temperature;
s5: and when the concrete is cured to the design requirement, the first water tank, the second water tank, the thermometer, the heating device and the refrigerating device are dismantled, the water inlet and the water outlet of the cooling water pipe and the communication line connected with the temperature sensor are cut off, and the cutting part is plugged.
Preferably, the heating device is an electric heating wire, and the refrigerating device can be an air cooling device or a cold water source connected with a water pump.
Preferably, the heating device, the refrigerating device, the thermometer and the temperature sensor are all connected with the control device, and the control device respectively acquires temperature data of the temperature sensor and the thermometer and controls the heating device or the refrigerating device to work or not work.
Preferably, the method for judging the temperature rising stage and the temperature lowering stage of the central temperature sensor comprises the following steps: if the average temperature obtained by the central temperature sensor for 1 hour continuously is higher than the average temperature obtained by the first 1 hour, the temperature is raised; if not, the cooling stage is adopted.
Preferably, the frequency of temperature sensor acquisition temperature is not more than 1min, and the acquired temperature point data per hour is not less than 60.
Preferably, the two layers of cooling water pipes are symmetrically arranged along the middle layer of the concrete thickness.
The working principle and the beneficial effects of the invention are as follows:
after pouring, concrete, especially large-volume concrete, generates larger heat in the interior, and because the concrete is a poor heat conductor, the heat is continuously generated and simultaneously is diffused and radiated outwards, but the radiating rate is smaller than the heat generating rate, so that the center of the early stage is in a heating stage; along with the progress of hydration reaction, the heat generation rate is gradually reduced, and the heat dissipation rate is greater than the heat generation rate, so that the center is in a cooling stage, the concrete is generally in a heating stage at an early stage, and after pouring is completed for a certain time (generally 3-7 d), the concrete enters the cooling stage, and different temperature control measures are adopted for the heating stage and the cooling stage.
One of the important invention points of the invention is to judge the temperature rising stage or the temperature reducing stage according to the temperature state acquired by the central temperature sensor, and for simple judgment, the temperature of the central point can be considered to be the temperature rising stage before reaching the peak value according to experience, and the temperature reducing stage after reaching the peak value; the internal temperature of the concrete is high in the heating stage, water is required to be introduced to reduce the internal temperature, but the water introduced temperature is not too low, and the too low water introduced temperature can cause a larger gradient between the concrete temperature at the water pipe and the water pipe temperature to cause local damage, so that the lower water introduced temperature is controlled in the heating stage to take away the generated heat, and meanwhile, the too low temperature is also controlled to not cause local damage; the measured standard temperature is the measured temperature of the central temperature sensor, which is used as the measurement standard of the temperature rising stage;
the temperature reduction stage is smooth due to hydration reaction, the controlled water passing temperature is mainly used for avoiding larger temperature gradient, the standard temperature is the average temperature of the peripheral temperature sensors, the average temperature represents the temperature of the concrete close to the surface, the average temperature is influenced by the outside air temperature and can generate certain fluctuation, and the standard temperature can be adapted to the temperature change of the concrete in the temperature reduction stage, so that the temperature control effect is improved.
The internal heat is needed to be taken away in the heating stage, so that heat aggregation generated by hydration reaction is avoided, and the judgment basis can be the temperature value of the first water tank, namely the water inlet; in the cooling stage, the hydration reaction intensity of the concrete is reduced, the heat generating effect is mild, and the temperature of the second water tank, namely the water outlet, can be selected as a judgment basis.
In the dynamic temperature control of the invention, the water passing temperature is influenced by the measured temperature and the water passing temperature in the concrete, so that a dynamic water inlet temperature control mode is adopted, the mode can be well adapted to the internal temperature of the concrete, the local damage caused by the temperature is avoided, the pouring quality of the temperature control can be improved, and the damage caused by the temperature gradient is avoided.
The control device is adopted to analyze and calculate, so as to realize the intelligent temperature control technology, and on the basis of realizing the inventive concept, the intelligent dynamic temperature control can be realized, and the construction quality and efficiency are improved.
The invention has the advantages that:
the intelligent dynamic temperature control method for the concrete provided by the invention has the advantages that the temperature control is realized by arranging the cooling water pipe, the real-time temperature of the concrete is measured by arranging the temperature sensor, the state discrimination is carried out by the temperature acquired by the temperature sensor, different temperature regulation methods are provided, the dynamic temperature control is realized, the adaptability of the water temperature of the water and the internal temperature field of the concrete is improved, the occurrence of temperature cracks is avoided, and the intelligent dynamic temperature control method for the concrete has a strong guiding significance for the temperature construction of the concrete.
Description of the drawings:
FIG. 1 is a schematic diagram of a cooling water pipe;
FIG. 2 is a schematic diagram of a temperature sensor arrangement;
fig. 3 is a schematic diagram of the connection of the control device.
The specific embodiment is as follows:
the following is a specific explanation of the structure defined by the present invention with reference to the drawings.
The invention provides an intelligent dynamic temperature control method for concrete, wherein the concrete is large-volume concrete, a cooling water pipe 1 is buried in the concrete during pouring, the cooling water pipe 1 comprises a water inlet 11 and a water outlet 12, a plurality of temperature sensors 2 are buried in the concrete, the height of a concrete layer is not less than 1m and not more than 2m, the concrete is of a cuboid structure, and the maximum side length of the cuboid is not more than 20m; the dynamic temperature control method comprises the following steps:
s1: the method comprises the steps of treating a foundation, arranging a sand cushion layer on the treated foundation, arranging a gravel cushion layer on the sand cushion layer, arranging a plurality of longitudinal steel bars on the gravel cushion layer, enabling the longitudinal steel bars to sequentially penetrate through the gravel cushion layer and the sand cushion layer, extending into the foundation, and binding the longitudinal steel bars to form a steel bar cage;
s2: two layers of cooling water pipes 1 are arranged in the reinforcement cage, the cooling water pipes 1 are in serpentine arrangement and are fixedly connected with the reinforcement respectively, the cooling water pipes 1 are respectively positioned at the upper part and the lower part of the concrete, and the dimension from the bottom and the top of the concrete is not less than 20cm; each layer of cooling water pipe 1 comprises a water inlet 11 and a water outlet 12, the water inlet 11 is provided with a first water tank, the water inlet 11 is connected with the first water tank through a water pump, the water outlet 12 is provided with a second water tank, and the first water tank is internally provided with a thermometer 3, a heating device 4 and a refrigerating device 5;
s3: the middle layer position department of concrete sets up a plurality of temperature sensor 2, temperature sensor 2 includes central temperature sensor 2 and peripheral temperature sensor 2, peripheral temperature sensor 2 symmetrical arrangement sets up to 4 altogether, is located respectively in four limit directions in concrete middle layer, peripheral temperature sensor 2 is apart from concrete surface distance is not less than 10cm, temperature sensor 2 is all fixed on the steel reinforcement cage, and the fixed mode is: a positioning rod is arranged on the reinforcement cage, a plastic sleeve is fixed on the positioning rod, a temperature sensor 2 is arranged in the plastic sleeve, and the temperature sensors 2 are all connected with a temperature measuring device outside the concrete through communication wires;
s4: after the arrangement of the temperature sensor 2 and the cooling water pipe 1 is completed, pouring concrete, obtaining the temperature value of the temperature sensor 2, starting a water pump to cool water, and performing dynamic temperature control, wherein the method for performing dynamic temperature control comprises the following steps:
s41: in the temperature rising stage of the central temperature sensor 2, acquiring the temperature of the central temperature sensor 2 as a first standard temperature, subtracting a first set value from the first standard temperature to be a first minimum temperature, subtracting a second set value from the first standard temperature to be a first maximum temperature, starting the heating device 4 if the temperature acquired by the thermometer 3 in the first water tank is lower than the first minimum temperature, starting the refrigerating device 5 if the temperature acquired by the thermometer 3 in the first water tank is higher than the maximum temperature, and normally working if the temperature acquired by the thermometer 3 in the first water tank is between the first minimum temperature and the first maximum temperature;
s42: in the cooling stage of the central temperature sensor 2, acquiring the temperatures of 4 peripheral temperature sensors 2, taking an average value of the temperatures as a second standard temperature, enabling the second standard temperature minus a third set value to be a second minimum temperature, enabling the second standard temperature minus a fourth set value to be a second maximum temperature, starting a heating device 4 if the temperature acquired by a thermometer 3 in a second water tank is lower than the second minimum temperature, starting a refrigerating device 5 if the temperature acquired by the thermometer 3 in the second water tank is higher than the second maximum temperature, and enabling normal operation if the temperature acquired by the thermometer 3 in the second water tank is between the second minimum temperature and the second maximum temperature;
s5: when the concrete is cured to the design requirement, the first water tank, the second water tank, the thermometer 3, the heating device 4 and the refrigerating device 5 are removed, the communication line connecting the water inlet 11 and the water outlet 12 of the cooling water pipe 1 and the temperature sensor 2 is cut off, and the cut-off part is plugged.
Preferably, the heating device 4 is an electric heating wire, and the refrigerating device 5 may be an air cooling device or a cold water source connected with a water pump; when the heating device is 4-position heating wires, the heating wires are connected with a trigger switch for controlling the heating wires to work or not to work; when the refrigerating device 5 is a cold water source connected with the air cooling device or the water pump, the air cooling device or the water pump is connected with the trigger switch for controlling the air cooling device or the water pump to work or not work.
Preferably, the heating device 4, the refrigerating device 5, the thermometer 3 and the temperature sensor 2 are all connected with a control device 6, and the control device 6 acquires temperature data of the temperature sensor 2 and the thermometer 3 and controls the heating device 4 or the refrigerating device 5 to work or not work. The control device 6 can be selected as a single chip microcomputer or a PLC.
Preferably, the method for determining the temperature rising stage and the temperature lowering stage of the center temperature sensor 2 is as follows: if the average temperature obtained by the central temperature sensor 2 for 1 hour continuously is higher than the average temperature obtained by the previous 1 hour, the temperature is raised; if not, the cooling stage is adopted.
Preferably, the control device 6 may store historical data of the central temperature sensor 2, for determining that the concrete is in a heating or cooling stage, and perform respective trigger calculation according to the heating or cooling stage. The first set value is larger than the second set value, the third set value is larger than the fourth set value, the first set value, the second set value, the third set value and the fourth set value can be modified, when no experience exists, the first set value can be taken to be 20-35 ℃, the second set value is 10-20 ℃, the third set value is 10-25 ℃, and the fourth set value is 5-15 ℃, and adjustment is carried out according to pouring seasons; the value is larger in summer and smaller in winter.
Preferably, the frequency of acquiring the temperature by the temperature sensor 2 is not more than 1min, the number of acquired temperature point data per hour is not less than 60, and the temperature sensor 2 should meet the temperature data acquisition requirement.
The above-described embodiments are only preferred embodiments of the present invention, and the scope of the present invention should not be construed as being limited to the specific forms set forth by the examples, but also includes equivalent technical means as will occur to those skilled in the art based on the inventive concept.
Claims (5)
1. The intelligent dynamic temperature control method for concrete comprises the steps that the concrete is large-volume concrete, a cooling water pipe is buried during concrete pouring, the cooling water pipe comprises a water inlet and a water outlet, a plurality of temperature sensors are buried in the concrete, the height of a concrete layer is not less than 1m and not more than 2m, the concrete is of a cuboid structure, and the maximum side length of the cuboid is not more than 20m; the dynamic temperature control method comprises the following steps:
s1: the method comprises the steps of treating a foundation, arranging a sand cushion layer on the treated foundation, arranging a gravel cushion layer on the sand cushion layer, arranging a plurality of longitudinal steel bars on the gravel cushion layer, enabling the longitudinal steel bars to sequentially penetrate through the gravel cushion layer and the sand cushion layer, extending into the foundation, and binding the longitudinal steel bars to form a steel bar cage;
s2: two layers of cooling water pipes are arranged in the reinforcement cage and are respectively and fixedly connected with the reinforcement, the cooling water pipes are respectively positioned at the upper part and the lower part of the concrete, and the dimension between the cooling water pipes and the bottom and the top of the concrete is not less than 20cm; each layer of cooling water pipe comprises a water inlet and a water outlet, the water inlet is provided with a first water tank, the water inlet is connected with the first water tank through a water pump, the water outlet is provided with a second water tank, and a thermometer, a heating device and a refrigerating device are arranged in the first water tank;
s3: the middle layer position department of concrete sets up a plurality of temperature sensor, temperature sensor includes central temperature sensor and peripheral temperature sensor, peripheral temperature sensor symmetrical arrangement is set up to 4 altogether, is located respectively in four limit rectangular directions in concrete middle layer, peripheral temperature sensor is apart from concrete surface distance is not less than 10cm, temperature sensor all fixes on the steel reinforcement cage, and the fixed mode is: a positioning rod is arranged on the reinforcement cage, a plastic sleeve is fixed on the positioning rod, a temperature sensor is arranged in the plastic sleeve, and the temperature sensors are all connected with a temperature measuring device outside the concrete through communication wires;
s4: after the arrangement of the temperature sensor and the cooling water pipe is completed, pouring concrete, obtaining the temperature value of the temperature sensor, starting a water pump to cool water, and performing dynamic temperature control, wherein the method for performing dynamic temperature control comprises the following steps of:
s41: in the temperature rising stage of the central temperature sensor, the temperature of the central temperature sensor is obtained and is used as a first standard temperature, the first standard temperature minus a first set value is made to be a first minimum temperature, the first standard temperature minus a second set value is made to be a first maximum temperature, if the temperature obtained by a thermometer in a first water tank is lower than the first minimum temperature, a heating device is started, if the temperature obtained by the thermometer in the first water tank is higher than the maximum temperature, a refrigerating device is started, and if the temperature obtained by the thermometer in the first water tank is between the first minimum temperature and the first maximum temperature, the refrigerating device can work normally;
s42: in the cooling stage of the central temperature sensor, acquiring the temperatures of 4 peripheral temperature sensors, taking an average value of the temperatures as a second standard temperature, enabling the second standard temperature minus a third set value to be a second minimum temperature, enabling the second standard temperature minus a fourth set value to be a second maximum temperature, starting a heating device if the temperature acquired by a thermometer in a second water tank is lower than the second minimum temperature, starting a refrigerating device if the temperature acquired by the thermometer in the second water tank is higher than the second maximum temperature, and normally working if the temperature acquired by the thermometer in the second water tank is between the second minimum temperature and the second maximum temperature;
s5: when the concrete is cured to the design requirement, the first water tank, the second water tank, the thermometer, the heating device and the refrigerating device are removed, the water inlet and the water outlet of the cooling water pipe and the communication line connected with the temperature sensor are cut off, and the cut-off part is plugged; the first set value is larger than the second set value, the third set value is larger than the fourth set value, the first set value is 20-35 ℃, the second set value is 10-20 ℃, the third set value is 10-25 ℃, and the fourth set value is 5-15 ℃.
2. The intelligent dynamic temperature control method for concrete according to claim 1, wherein: the heating device is an electric heating wire, and the refrigerating device is an air cooling device.
3. The intelligent dynamic temperature control method for concrete according to claim 1, wherein: the heating device, the refrigerating device, the thermometer and the temperature sensor are all connected with the control device, and the control device respectively acquires temperature data of the temperature sensor and the thermometer and controls the heating device or the refrigerating device to work or not to work.
4. The intelligent dynamic temperature control method for concrete according to claim 1, wherein: the judging method of the temperature rising stage and the temperature reducing stage of the central temperature sensor comprises the following steps: if the average temperature obtained by the central temperature sensor for 1 hour continuously is higher than the average temperature obtained by the first 1 hour, the temperature is raised; if not, the cooling stage is adopted.
5. The intelligent dynamic temperature control method for concrete according to claim 1, wherein: the frequency of temperature acquisition by the temperature sensor is not more than 1min, and the number of temperature point data acquired per hour is not less than 60.
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