Mass concrete formwork with dynamic temperature control function and construction method thereof

Abstract

The mass concrete formwork with the dynamic temperature control function comprises a surface layer temperature control concrete formwork body, a formwork temperature control system, an internal temperature control water pipe, an internal temperature control system and a temperature monitoring system, the surface layer temperature control concrete formwork body comprises a formwork body and a temperature control inner plate, and the internal temperature control water pipe is a single-layer or multi-layer loop condensation pipe; the template temperature control system comprises a temperature controller I, a template signal transmission system and a template water circulation system, the template water circulation system comprises a temperature adjusting water tank I, a template water pump and a closed water pipe connected with a template which are connected in sequence, and the internal temperature control system comprises a temperature controller II, an internal signal transmission system and an internal water circulation system. The automatic temperature control system is used for independently controlling the water temperature of the concrete formwork and the water temperature of the inner condensation pipe, it is guaranteed that the interior of concrete is gradually and accurately cooled, a reasonable control mode is selected for the surface layer according to the environment, and the limitation of seasons on large-size concrete construction is eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete construction, and in particular to a large-volume concrete formwork with dynamic temperature control and a construction method thereof. Background Art

[0002] The characteristics of mass concrete are large structure volume and relatively small heat dissipation area. In the first few days of pouring concrete, the hydration heat accumulates inside the structure, causing the temperature to rise sharply, resulting in a large temperature difference between the inside and the surface of the concrete, with the inside being high and the outside being relatively low, which is prone to temperature difference cracks. The external environment has a great influence on the generation of cracks in mass concrete. In bad weather or cold winter, the surface temperature of the concrete structure is low, which increases the temperature difference between the inside and the outside of the structure. Therefore, some insulation measures are usually taken to reduce the temperature difference between the inside and the outside when the ambient temperature is low.

[0003] When the temperature inside the concrete is too high, the pre-buried cooling water pipe is used for cooling, and the heat of the concrete is taken away by the water flow. The surface temperature of the concrete can also be reduced by sprinkling or spraying water on the surface. However, in actual use, the temperature of the cooling water pipe is too low or the temperature difference between the sprinkling and the concrete surface is too large, which will also cause the concrete to crack. When the external environment is cold, the concrete surface needs to be covered and insulated. The above temperature control measures all require artificial temperature control measures according to the construction environment, which not only increases the construction cost but also has a low concrete quality assurance rate. At the same time, the above measures cannot accurately and quickly achieve cooling or insulation of large volumes of concrete.

[0004] In response to the above problems, it is urgent to integrate the temperature control measures for large-volume concrete with the improvement of existing construction processes, so that large-volume concrete construction can break free from the limitations of the construction environment, automatically select and execute cooling measures without human intervention, achieve temperature control inside and on the surface of the concrete, and ensure the construction quality of large-volume concrete. Summary of the invention

[0005] The present invention aims to address the deficiencies of the prior art and provides a large-volume concrete formwork with dynamic temperature control and a construction method thereof. By integrating the concrete formwork, temperature control measures, construction technology and temperature control mechanism, the large-volume concrete construction is freed from the limitations of the construction environment, and the cooling measures are automatically selected and executed without human intervention, thereby achieving temperature control inside and on the surface of the concrete and ensuring the construction quality of the large-volume concrete.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A large-volume concrete formwork with dynamic temperature control comprises a surface temperature-controlled concrete formwork, a formwork temperature control system, an internal temperature-controlled water pipe, an internal temperature-controlled water pipe and a temperature monitoring system. The surface temperature-controlled concrete formwork comprises a formwork and a temperature-controlled inner plate. The internal temperature-controlled water pipe is arranged on the temperature-controlled inner plate. The internal temperature-controlled water pipe is a condenser tube with a single or multi-layer loop. The formwork temperature control system comprises a thermostat I, a formwork signal transmission system and a formwork water circulation system. The formwork water circulation system comprises a thermostatic water tank I, a formwork water pump and a closed water pipe connected to the formwork in sequence. The internal temperature control system comprises a thermostat II, an internal signal transmission system and an internal water circulation system. The internal water circulation system comprises a thermostatic water tank II, an internal water pump and a closed water pipe connected to the internal temperature-controlled water pipe in sequence. The temperature monitoring system comprises an ambient temperature sensor, a large-volume concrete surface temperature sensor, a large-volume concrete internal temperature sensor, a thermostatic water tank I temperature sensor, a thermostatic water tank II temperature sensor, a formwork water temperature sensor and a condenser tube temperature sensor. The temperature signal monitored by the temperature monitoring system is received and regulated by the formwork temperature control system and the internal temperature control system.

[0008] The thermostat I is used to automatically determine whether to open or close the template temperature control system according to the temperature difference between the interior of the mass concrete and the surface of the mass concrete, and the temperature difference between the surface of the mass concrete and the external environment. The thermostat I has a built-in data analysis system I for calculating the temperature difference between the external environment and the surface of the mass concrete, the temperature difference between the surface of the mass concrete and the interior of the mass concrete, or the temperature difference between the surface of the mass concrete and the external environment; the thermostat II is used to automatically determine whether to open or close the internal temperature control system according to the temperature difference between the interior of the mass concrete and the surface of the mass concrete; the thermostat II has a built-in data analysis system II for calculating the temperature difference between the interior of the mass concrete and the surface of the mass concrete.

[0009] The template signal transmission system is used to convert the temperature signal monitored by the temperature monitoring system into an electrical signal and transmit it to the data analysis system I; the internal signal transmission system is used to convert the temperature signal monitored by the temperature monitoring system into an electrical signal and transmit it to the data analysis system II.

[0010] The temperature control inner plate is a thin-walled steel plate welded to the inner wall of the template. The temperature control inner plate and the inner wall form a closed cavity. A plurality of stiffening cylinders are arranged in the closed cavity. A water inlet connected to the template water circulation system is arranged at the lower left corner of the closed cavity, and a water outlet connected to the template water circulation system is arranged at the upper right corner of the closed cavity.

[0011] The ambient temperature sensor is buried on the outer surface of the template, and the upper surface of the template is in contact with the external environment; the surface temperature sensor of the large-volume concrete is buried 5-10 cm deep inside the surface of the large-volume concrete; the internal temperature sensor of the large-volume concrete is buried at the geometric center of the large-volume concrete or the position where the highest temperature is expected; the temperature sensor of the thermostatic water tank I is set at 5 cm below the water level line of the thermostatic water tank I; the temperature sensor of the thermostatic water tank II is set at 5 cm below the water level line of the thermostatic water tank II; the template water temperature sensor is set at the water outlet of the temperature control inner plate; the condenser temperature sensor is set in the middle of the total length of the condenser.

[0012] A method for dynamic temperature control of a large-volume concrete formwork, using a large-volume concrete formwork with dynamic temperature control, includes the following steps of a large-volume concrete surface temperature drop control process and a large-volume concrete internal temperature drop control process:

[0013] The mass concrete surface temperature drop control process includes:

[0014] S1. The temperature monitoring system monitors the external environment temperature, the surface temperature of the mass concrete, the geometric center temperature of the mass concrete and the temperature of the temperature regulating water tank I in real time, and transmits them to the data analysis system I built into the temperature controller I through the template signal transmission system;

[0015] S2. When the surface temperature of the mass concrete is greater than the external environment temperature by 20°C or the geometric center temperature of the mass concrete is greater than the surface temperature of the mass concrete by 20°C, the thermostat I turns on the template temperature control system, the temperature regulating water tank I starts to work and regulates the water temperature to a value equal to the real-time temperature of the geometric center of the mass concrete minus the maximum allowable temperature difference of 1, the template water pump starts to work, and the surface temperature-controlled concrete template is gradually controlled to be consistent with the temperature of the temperature regulating water tank I;

[0016] S3. When the temperature difference between the geometric center temperature of the mass concrete and the external environment temperature is less than 25°C for three consecutive days, the formwork water circulation system stops working and the formwork temperature control system is closed;

[0017] The mass concrete internal temperature drop control process includes:

[0018] P1. The temperature monitoring system monitors the external environment temperature, the surface temperature of the mass concrete, the geometric center temperature of the mass concrete and the temperature of the temperature-adjusting water tank II in real time, and transmits them to the data analysis system II built into the thermostat II through the internal signal transmission system;

[0019] P2. When the temperature difference between the geometric center temperature of the mass concrete and the surface temperature of the mass concrete is greater than 25°C, the thermostat II turns on the internal temperature control system, the temperature regulating water tank II starts to work and controls the water temperature to a value equal to the real-time temperature of the geometric center of the mass concrete minus the maximum allowable temperature difference of 2, the internal water pump starts to work, and the condenser gradually controls the temperature to the same temperature as the temperature of the temperature regulating water tank II;

[0020] P3. When the temperature difference between the geometric center temperature of the mass concrete and the surface temperature of the mass concrete is less than 15°C, the internal water circulation system stops working and the internal temperature control system is closed.

[0021] The maximum allowable temperature difference 1 and the maximum allowable temperature difference 2 have a value range of 10-25 degrees. By adjusting the values, it is ensured that the cooling rate of the large volume concrete is not greater than 2°C / d and not greater than 1°C / 4h.

[0022] The mass concrete surface temperature drop control process and the mass concrete internal temperature drop control process share temperature measurement data, work independently according to control conditions, and are dynamically adjusted according to temperature monitoring data.

[0023] A construction method is applicable to a large-volume concrete formwork with dynamic temperature control, and the construction steps are:

[0024] F1: Assembling of surface temperature-controlled concrete formwork;

[0025] F2: Arrangement of temperature measuring elements for steel bar binding, condenser pipes and temperature monitoring system;

[0026] F3: Surface temperature controlled concrete formwork external formwork water circulation system;

[0027] F4: Internal water pressure test of condenser pipe, surface temperature-controlled concrete formwork, formwork water circulation system and internal water circulation system;

[0028] F5: The condenser tube and the temperature control inner plate are pre-filled with cooling water;

[0029] F6: Concrete pouring and vibration;

[0030] F7: After the initial setting of the concrete, the formwork temperature control system and the internal temperature control system are powered on;

[0031] F8: After the concrete strength reaches the conditions for demolding, loosen the assembly bolts of the surface temperature-controlled concrete formwork appropriately;

[0032] F9: After the formwork temperature control system and the internal temperature control system stop working, the surface temperature-controlled concrete formwork is dismantled;

[0033] F10: Use cement slurry to grout and seal the condenser pipe.

[0034] The beneficial effects of the present invention are as follows: the present invention independently controls the water temperature of the concrete formwork and the internal condenser tube through the automatic temperature control system, thereby ensuring the gradual and accurate cooling of the interior of the concrete, and selecting a reasonable control method according to the environment for the surface layer, thereby getting rid of the seasonal restrictions on the construction of large-volume concrete, and further ensuring the construction quality of large-volume concrete; it automatically opens and closes according to the temperature difference change, without the need for manual monitoring and temperature control measures, thereby realizing the automation and visualization of the temperature control of large-volume concrete, and saving labor costs; it can be achieved by simply modifying the existing formwork, which is convenient to combine with the general construction process, and the construction process is simple to operate, which is more conducive to the promotion and application of the project; there is no need to increase the overall construction cost, and spend more on the formwork cost, but saves the cost of concrete insulation materials and labor costs, and the construction process is basically unchanged, and the comprehensive construction cost remains unchanged, and the construction cost may even decrease with the increase of labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of a large-volume concrete formwork with a dynamic temperature control system according to the present invention;

[0036] Figure 2 A schematic diagram of the location of the temperature sensor in the temperature monitoring system of the present invention;

[0037] Figure 3 This is a schematic diagram of the surface temperature controlled concrete formwork of the present invention;

[0038] Figure 4 This is a schematic diagram of the interior of a thin-walled steel plate cut open by a temperature control inner plate of the present invention;

[0039] In the figure: 1-surface temperature-controlled concrete formwork; 11-formwork; 12-temperature-controlled inner plate; 121-enclosed cavity; 122-stiffened cylinder; 123-water inlet; 124-water outlet; 2-formwork temperature control system; 21-temperature controller I; 211-data analysis system; 22-formwork signal transmission system; 23-formwork water circulation system; 231-temperature-adjusting water tank I; 232-formwork water pump; 233-closed water pipe connected to the formwork; 3-internal temperature-controlled water pipe; 4-internal temperature control system; 41- Thermostat II; 42-internal signal transmission system; 43-internal water circulation system; 431-temperature-adjusting water tank II; 432-internal water pump; 433-closed water pipe connected to the condenser; 5-temperature monitoring system; 51-ambient temperature sensor; 52-mass concrete surface temperature sensor; 53-mass concrete internal temperature sensor; 54-temperature sensor of temperature-adjusting water tank I; 55-temperature sensor of temperature-adjusting water tank II; 56-template water temperature sensor; 57-condenser temperature sensor;

[0040] The following is a detailed description of the embodiments of the invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0042] like Figure 1-Figure 4 As shown, a large-volume concrete formwork with dynamic temperature control includes a surface temperature-controlled concrete formwork 1, a formwork temperature control system 2, an internal temperature-controlled water pipe 3, an internal temperature control system 4 and a temperature monitoring system 5. The surface temperature-controlled concrete formwork 1 includes a formwork 11 and a temperature-controlled inner plate 12. The internal temperature-controlled water pipe 3 is arranged on the temperature-controlled inner plate 12. The internal temperature-controlled water pipe 3 is a condenser tube of a single-layer or multi-layer loop. The formwork temperature control system 2 includes a temperature controller 121, a formwork signal transmission system 22 and a formwork water circulation system 23. The formwork water circulation system 23 includes a temperature-controlled water tank 1231, a formwork water pump 232 and a closed water pipe 233 connected to the formwork in sequence. The internal temperature control System 4 includes a temperature controller II41, an internal signal transmission system 42 and an internal water circulation system 43. The internal water circulation system 43 includes a temperature regulating water tank II431, an internal water pump 432 and a closed water pipe 433 connected to the internal temperature control water pipe in sequence. The temperature monitoring system 5 includes an ambient temperature sensor 51, a large volume concrete surface temperature sensor 52, a large volume concrete internal temperature sensor 53, a temperature regulating water tank I temperature sensor 54, a temperature regulating water tank II temperature sensor 55, a template water temperature sensor 56 and a condenser temperature sensor 57. The temperature signal monitored by the temperature monitoring system 5 is received and regulated by the template temperature control system 2 and the internal temperature control system 4.

[0043] The thermostat I21 is used to automatically determine whether to open or close the formwork temperature control system according to the temperature difference between the interior of the mass concrete and the surface of the mass concrete, and the temperature difference between the surface of the mass concrete and the external environment. The thermostat I21 has a built-in data analysis system I211, which is used to calculate the temperature difference between the external environment and the surface of the mass concrete, the temperature difference between the surface of the mass concrete and the interior of the mass concrete, or the temperature difference between the surface of the mass concrete and the external environment; the thermostat II42 is used to automatically determine whether to open or close the internal temperature control system according to the temperature difference between the interior of the mass concrete and the surface of the mass concrete; the thermostat II41 has a built-in data analysis system II411, which is used to calculate the temperature difference between the interior of the mass concrete and the surface of the mass concrete.

[0044] The template signal transmission system 22 is used to convert the temperature signal monitored by the temperature monitoring system 5 into an electrical signal, and transmit it to the data analysis system I211; the internal signal transmission system 42 is used to convert the temperature signal monitored by the temperature monitoring system 5 into an electrical signal, and transmit it to the data analysis system II411.

[0045] The temperature control inner plate 12 is a thin-walled steel plate welded to the inner wall of the template 11. The temperature control inner plate 12 and the inner wall form a closed cavity 121. A plurality of stiffening cylinders 122 are arranged in the closed cavity 121. A water inlet 123 connected to the template water circulation system 23 is arranged at the lower left corner of the closed cavity 121. The water inlet 123 is connected to the closed water pipe connected to the template. A water outlet 124 connected to the template water circulation system 23 is arranged at the upper right corner of the closed cavity 121. The water outlet 124 is connected to the closed water pipe connected to the template to form a closed water circuit.

[0046] The environmental temperature sensor 51 is embedded in the outer surface of the template 11, and the upper surface of the template 11 is in contact with the external environment, and is used to monitor the temperature change of the external environment in real time; the large-volume concrete surface temperature sensor 52 is embedded in the surface of the large-volume concrete to a depth of 5-10 cm, and is used to monitor the surface temperature of the large-volume concrete in real time; the large-volume concrete internal temperature sensor 53 is embedded in the geometric center of the large-volume concrete or the position where the highest temperature is expected, and is used to monitor the internal temperature of the large-volume concrete in real time; the temperature sensor 54 of the thermostatic water tank I is set at 5 cm below the water level of the thermostatic water tank I231, and is used to monitor the water temperature of the thermostatic water tank I in real time; the temperature sensor 55 of the thermostatic water tank II is set at 5 cm below the water level of the thermostatic water tank II431, and is used to monitor the water temperature of the thermostatic water tank II in real time; the template water temperature sensor 56 is set at the outlet 124 of the temperature control inner plate 12, and is used to monitor the template water temperature in real time; the condenser temperature sensor 57 is set in the middle of the total length of the condenser, and is used to monitor the water temperature in the condenser in real time. The various temperature sensors of the temperature monitoring system 5 can be appropriately encrypted according to the project size.

[0047] A method for dynamic temperature control of a large-volume concrete formwork, using a large-volume concrete formwork with dynamic temperature control, includes the following steps of a large-volume concrete surface temperature drop control process and a large-volume concrete internal temperature drop control process:

[0048] The mass concrete surface temperature drop control process includes:

[0049] S1, the temperature monitoring system 5 monitors the external environment temperature (T0), the surface temperature of the mass concrete (T1), the geometric center temperature of the mass concrete (T2) and the temperature of the temperature regulating water tank I231 (T3) in real time, and transmits them to the data analysis system I211 built in the temperature controller I21 through the template signal transmission system 22;

[0050] S2. When the surface temperature of the mass concrete is greater than the external environment temperature by 20°C or the geometric center temperature of the mass concrete is greater than the surface temperature of the mass concrete by 20°C, that is, |T1-T0|≥20 or |T2-T1|≥20, the thermostat I21 turns on the template temperature control system 2, the temperature regulating water tank I231 starts to work and regulates the water temperature to a value equal to the real-time temperature of the geometric center of the mass concrete (T2) minus the maximum allowable temperature difference 1 (ΔT1), the template water pump 231 starts to work, and the surface temperature controlled concrete template 1 is gradually controlled to be consistent with the temperature of the temperature regulating water tank I231;

[0051] S3, when the temperature difference between the geometric center temperature (T2) of the mass concrete and the external environment temperature (T1) is less than 25°C for three consecutive days, the template water circulation system 23 stops working and the template temperature control system 2 is closed;

[0052] The mass concrete internal temperature drop control process includes:

[0053] P1, the temperature monitoring system 5 monitors the external environment temperature (T0), the surface temperature of the mass concrete (T1), the geometric center temperature of the mass concrete (T2) and the temperature of the temperature-adjusting water tank II431 (T4) in real time, and transmits them to the data analysis system II411 built in the temperature controller II41 through the internal signal transmission system 42;

[0054] P2. When the temperature difference between the geometric center temperature of the mass concrete and the surface temperature of the mass concrete is greater than 25°C, that is, |T2-T1|≥25, the thermostat II41 turns on the internal temperature control system 4, the temperature regulating water tank II431 starts to work and controls the water temperature to a value equal to the real-time temperature of the geometric center of the mass concrete (T2) minus the maximum allowable temperature difference 2 (ΔT1), the internal water pump 432 starts to work, and the condenser gradually controls the temperature to the same temperature as the temperature of the temperature regulating water tank II431;

[0055] P3. When the temperature difference between the geometric center temperature of the mass concrete and the surface temperature of the mass concrete is less than 15°C, the internal water circulation system 43 stops working and the internal temperature control system 4 is closed.

[0056] The maximum allowable temperature difference 1 and the maximum allowable temperature difference 2 have a value range of 10-25 degrees. By adjusting the values, the cooling rate of large-volume concrete is ensured to be no more than 2°C / d and no more than 1°C / 4h, thereby avoiding insufficient later strength of large volumes due to too rapid cooling.

[0057] The mass concrete surface temperature drop control process and the mass concrete internal temperature drop control process share temperature measurement data, work independently according to control conditions, and are dynamically adjusted according to temperature monitoring data.

[0058] A construction method is applicable to a large-volume concrete formwork with dynamic temperature control, and the construction steps are:

[0059] F1: Assemble the surface temperature-controlled concrete formwork 1 and tighten it with bolts;

[0060] F2: Arrangement of temperature measuring elements for steel bar binding, condenser pipe and temperature monitoring system 5;

[0061] F3: Surface temperature controlled concrete formwork 1 is connected to the external formwork water circulation system 23;

[0062] F4: internal water pressure test of condenser pipe, surface temperature control concrete formwork 1, formwork water circulation system 23 and internal water circulation system 43;

[0063] F5: The condenser tube and the temperature control inner plate 12 are pre-filled with cooling water;

[0064] F6: Concrete pouring and vibration;

[0065] F7: After the initial setting of the concrete, the formwork temperature control system 2 and the internal temperature control system 4 are powered on;

[0066] F8: After the concrete strength reaches the formwork removal condition, loosen the assembly bolts of the surface temperature-controlled concrete formwork 1 appropriately, wherein the stress constraint of the formwork 11 on the mass concrete is reduced by loosening the bolts appropriately;

[0067] F9: After the template temperature control system 2 and the internal temperature control system 4 stop working, the surface temperature-controlled concrete template 1 is demoulded;

[0068] F10: Use cement slurry to grout and seal the condenser pipe.

[0069] The present invention independently controls the water temperature of the concrete outer formwork and the internal condenser tube through a dynamic temperature control system, thereby ensuring that the concrete interior is gradually and accurately cooled. The surface layer selects a reasonable temperature control method according to the external environment, thus getting rid of the seasonal restrictions on large-volume concrete construction and further ensuring the quality of large-volume concrete construction. It is automatically turned on and off according to the temperature difference, without the need for manual monitoring and temperature control measures, thus achieving automation and visualization of large-volume concrete temperature control and saving labor costs. This can be achieved by simply modifying the existing formwork, which is convenient to combine with the general construction process, and the construction process is simple to operate, which is more conducive to engineering promotion and application.

[0070] In the description of the invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0071] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0072] In the invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrated; it can be mechanically connected, electrically connected, or able to communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0073] The invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the invention, or they are directly applied to other occasions without improvement, they are all within the scope of protection of the invention.

Claims

1. A large-volume concrete formwork with dynamic temperature control, characterized in that: The invention comprises a surface temperature-controlled concrete formwork (1), a formwork temperature control system (2), an internal temperature-controlled water pipe (3), an internal temperature-controlled control system (4) and a temperature monitoring system (5); the surface temperature-controlled concrete formwork (1) comprises a formwork (11) and a temperature-controlled inner plate (12); the internal temperature-controlled water pipe (3) is arranged on the temperature-controlled inner plate (12); the internal temperature-controlled water pipe (3) is a condenser pipe of a single-layer or multi-layer loop; the formwork temperature control system (2) comprises a temperature controller I (21), a formwork signal transmission system (22) and a formwork water circulation system (23); the formwork water circulation system (23) comprises a temperature-controlled water tank I (231), a formwork water pump (232) and a closed water pipe (233) connected to the formwork in sequence; the internal temperature control system (4) comprises a temperature controller I (21); a formwork signal transmission system (22) and a closed water pipe (233) connected to the formwork; I (41), an internal signal transmission system (42) and an internal water circulation system (43), the internal water circulation system (43) comprising a temperature regulating water tank II (431), an internal water pump (432) and a closed water pipe (433) connected to the internal temperature control water pipe in sequence, the temperature monitoring system (5) comprising an ambient temperature sensor (51), a mass concrete surface temperature sensor (52), a mass concrete internal temperature sensor (53), a temperature sensor for the temperature regulating water tank I (54), a temperature sensor for the temperature regulating water tank II (55), a template water temperature sensor (56) and a condenser temperature sensor (57), and the temperature signal monitored by the temperature monitoring system (5) is received and regulated by the template temperature control system (2) and the internal temperature control system (4).

2. A large volume concrete formwork with dynamic temperature control according to claim 1, characterized in that: The temperature controller I (21) is used to automatically determine whether to open or close the formwork temperature control system according to the temperature difference between the interior of the mass concrete and the surface of the mass concrete, and the temperature difference between the surface of the mass concrete and the external environment. The temperature controller I (21) has a built-in data analysis system I (211) for calculating the temperature difference between the external environment and the surface of the mass concrete, the temperature difference between the surface of the mass concrete and the interior of the mass concrete, or the temperature difference between the surface of the mass concrete and the external environment. The temperature controller II (42) is used to automatically determine whether to open or close the internal temperature control system according to the temperature difference between the interior of the mass concrete and the surface of the mass concrete. The temperature controller II (41) has a built-in data analysis system II (411) for calculating the temperature difference between the interior of the mass concrete and the surface of the mass concrete.

3. The large-volume concrete formwork with dynamic temperature control according to claim 2 is characterized in that: The template signal transmission system (22) is used to convert the temperature signal monitored by the temperature monitoring system (5) into an electrical signal, and transmit it to the data analysis system I (211); the internal signal transmission system (42) is used to convert the temperature signal monitored by the temperature monitoring system (5) into an electrical signal, and transmit it to the data analysis system II (411).

4. The large-volume concrete formwork with dynamic temperature control according to claim 3 is characterized in that: The temperature control inner plate (12) is a thin-walled steel plate welded to the inner wall of the template (11); the temperature control inner plate (12) and the inner wall form a closed cavity (121); a plurality of stiffening cylinders (122) are arranged in the closed cavity (121); a water inlet (123) connected to the template water circulation system (23) is arranged at the lower left corner of the closed cavity (121); and a water outlet (124) connected to the template water circulation system (23) is arranged at the upper right corner of the closed cavity (121).

5. The large-volume concrete formwork with dynamic temperature control according to claim 4, characterized in that: The environmental temperature sensor (51) is embedded in the outer surface of the template (11), and the upper surface of the template (11) is in contact with the external environment; the large-volume concrete surface temperature sensor (52) is embedded in the large-volume concrete surface layer to a depth of 5-10 cm; the large-volume concrete internal temperature sensor (53) is embedded in the geometric center of the large-volume concrete or the position where the highest temperature is expected; the temperature sensor (54) of the thermostatic water tank I is set at 5 cm below the water level of the thermostatic water tank I (231); the temperature sensor (55) of the thermostatic water tank II is set at 5 cm below the water level of the thermostatic water tank II (431); the template water temperature sensor (56) is set at the water outlet (124) of the temperature control inner plate (12); and the condenser temperature sensor (57) is set in the middle of the total length of the condenser.

6. A method for dynamic temperature control of a large volume concrete formwork, using a large volume concrete formwork with dynamic temperature control as described in claims 1-5, characterized in that: The steps of the mass concrete surface temperature drop control process and the mass concrete internal temperature drop control process are as follows: The mass concrete surface temperature drop control process includes: S1, the temperature monitoring system (5) monitors the external environment temperature, the surface temperature of the mass concrete, the geometric center temperature of the mass concrete and the temperature of the temperature regulating water tank I (231) in real time, and transmits the temperature to the data analysis system I (211) built in the temperature controller I (21) through the template signal transmission system (22); S2. When the surface temperature of the mass concrete is greater than the external environment temperature by 20°C or the geometric center temperature of the mass concrete is greater than the surface temperature of the mass concrete by 20°C, the thermostat I (21) turns on the formwork temperature control system (2), the temperature regulating water tank I (231) starts to work and regulates the water temperature to a value equal to the real-time temperature of the geometric center of the mass concrete minus the maximum allowable temperature difference 1, the formwork water pump (231) starts to work, and the surface temperature controlled concrete formwork (1) is gradually controlled to be consistent with the temperature of the temperature regulating water tank I (231); S3. When the temperature difference between the geometric center temperature of the mass concrete and the external environment temperature is less than 25°C for three consecutive days, the formwork water circulation system (23) stops working and the formwork temperature control system (2) is closed; The mass concrete internal temperature drop control process includes: P1, the temperature monitoring system (5) monitors the external environment temperature, the surface temperature of the mass concrete, the geometric center temperature of the mass concrete and the temperature of the temperature regulating water tank II (431) in real time, and transmits the temperature to the data analysis system II (411) built in the temperature controller II (41) through the internal signal transmission system (42); P2. When the temperature difference between the geometric center temperature of the mass concrete and the surface temperature of the mass concrete is greater than 25°C, the thermostat II (41) turns on the internal temperature control system (4), the temperature regulating water tank II (431) starts to work to control the water temperature to a value equal to the real-time temperature of the geometric center of the mass concrete minus the maximum allowable temperature difference 2, the internal water pump (432) starts to work, and the condenser pipe gradually controls the temperature to the same temperature as the temperature of the temperature regulating water tank II (431); P3. When the temperature difference between the geometric center temperature of the mass concrete and the surface temperature of the mass concrete is less than 15°C, the internal water circulation system (43) stops working and the internal temperature control system (4) is closed.

7. A method for dynamic temperature control of a large volume concrete formwork according to claim 6, characterized in that: The maximum allowable temperature difference 1 and the maximum allowable temperature difference 2 have a value range of 10-25 degrees. By adjusting the values, it is ensured that the cooling rate of the large volume concrete is not greater than 2°C / d and not greater than 1°C / 4h.

8. A method for dynamic temperature control of a large volume concrete formwork according to claim 7, characterized in that: The mass concrete surface temperature drop control process and the mass concrete internal temperature drop control process share temperature measurement data, work independently according to control conditions, and are dynamically adjusted according to temperature monitoring data.

9. A construction method, applicable to a large-volume concrete form with dynamic temperature control as claimed in claims 1 to 5, characterized in that: The construction steps are: F1: Assembling the surface temperature-controlled concrete formwork (1); F2: Arrangement of temperature measuring elements for steel bar binding, condenser pipes and temperature monitoring system (5); F3: The surface temperature-controlled concrete formwork (1) is connected to an external formwork water circulation system (23); F4: Internal water pressure test of condenser pipe, surface temperature control concrete formwork (1), formwork water circulation system (23) and internal water circulation system (43); F5: The condenser tube and the temperature control inner plate (12) are pre-filled with cooling water; F6: Concrete pouring and vibration; F7: After the initial setting of the concrete, the formwork temperature control system (2) and the internal temperature control system (4) are powered on; F8: After the concrete strength reaches the conditions for demoulding, loosen the assembly bolts of the surface temperature-controlled concrete formwork (1) appropriately; F9: After the formwork temperature control system (2) and the internal temperature control system (4) stop working, the surface temperature-controlled concrete formwork (1) is dismantled; F10: Use cement slurry to grout and seal the condenser pipe.

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