阅读说明：本技术 一种大体积混凝土温控系统及方法 (Mass concrete temperature control system and method ) 是由 杨文明 李勇 祁亚 武安峰 孙强 杜增伟 罗航 唐清孝 刘宇飞 康雄辉 胡锤 于 2021-01-06 设计创作，主要内容包括：本申请公开了一种大体积混凝土温控系统及方法,涉及大体积混凝土施工技术领域,大体积混凝土具有多个温控截面,以每个温控截面的中心为坐标原点,以经过坐标原点且相互垂直的两条直线分别为X轴和Y轴,该温控系统包括：冷却水管；第一测点,其布置于坐标原点处；第二测点,其设有多个,分别布置于温控截面的Y轴正半轴和X轴负半轴上；水泵,其一端分别通过多个电磁阀连接到各冷却水管,其另一端连接冷却水箱；控制主机,其用于接收各第一测点和各第二测点的温度信号,并根据温度信号获取各温度参数,还用于当任一温度参数超出其阈值范围时,控制水泵和相应电磁阀工作。本申请,不仅温度控制过程简单、操作方便,且温度控制的效果良好。(The application discloses bulky concrete temperature control system and method relates to bulky concrete construction technical field, and bulky concrete has a plurality of control by temperature change cross-sections to every control by temperature change cross-section's center is the origin of coordinates, and two straight lines that use through origin of coordinates and mutually perpendicular are X axle and Y axle respectively, and this temperature control system includes: a cooling water pipe; a first measuring point arranged at the coordinate origin; a plurality of second measuring points are arranged and respectively arranged on a Y-axis positive half shaft and an X-axis negative half shaft of the temperature control section; one end of the water pump is connected to each cooling water pipe through a plurality of electromagnetic valves, and the other end of the water pump is connected with the cooling water tank; and the control host is used for receiving the temperature signals of the first measuring points and the second measuring points, acquiring each temperature parameter according to the temperature signals, and controlling the water pump and the corresponding electromagnetic valve to work when any temperature parameter exceeds the threshold range. This application, not only temperature control process is simple, convenient operation, and temperature control's is respond well.)

1. The utility model provides a bulky concrete temperature control system, its characterized in that, bulky concrete has a plurality of control by temperature change cross sections from bottom to top to the center of every control by temperature change cross section is the origin of coordinates, and two straight lines that pass through origin of coordinates and mutually perpendicular are X axle and Y axle respectively, temperature control system includes:

the cooling water pipe (4) is provided with a plurality of layers, and each layer of cooling water pipe (4) is arranged in one temperature control section;

a first measuring point (1) arranged at the coordinate origin;

a plurality of second measuring points (2) are arranged and are respectively arranged on a Y-axis positive half shaft and an X-axis negative half shaft of the temperature control section;

one end of the water pump is connected to each cooling water pipe (4) through a plurality of electromagnetic valves, and the other end of the water pump is connected with the cooling water tank;

and the control host is used for receiving the temperature signals of the first measuring points (1) and the second measuring points (2), acquiring each temperature parameter according to the temperature signals, and controlling the water pump and the corresponding electromagnetic valve to work when any temperature parameter exceeds the threshold range.

2. The bulk concrete temperature control system of claim 1, wherein: the control host is also used for setting the threshold value range of each temperature parameter of the mass concrete of each time node;

the temperature parameters comprise the measured temperature and the temperature change rate of each measuring point of the mass concrete.

3. The bulk concrete temperature control system of claim 1, wherein: the number and the arrangement positions of the second measuring points (2) of the lowest and the uppermost temperature control cross sections are the same, and the number and the arrangement positions of the second measuring points (2) of all the temperature control cross sections except the lowest and the uppermost are the same.

4. The bulk concrete temperature control system of claim 3, wherein: each section is provided with a plurality of isothermal loop lines;

in the temperature control section except the lowermost temperature control section and the uppermost temperature control section, the number of second measuring points (2) on a Y-axis positive half shaft and an X-axis negative half shaft is even, third measuring points (3) are respectively arranged on the Y-axis negative half shaft and the X-axis positive half shaft, the number of the third measuring points (3) on the Y-axis negative half shaft is half of the number of the second measuring points (2) on the Y-axis positive half shaft, the number of the third measuring points (3) on the X-axis positive half shaft is half of the number of the second measuring points (2) on the X-axis negative half shaft, each third measuring point (3) is provided with the second measuring points (2) which are symmetrically arranged relative to the coordinate origin, and the second measuring points (2) and the third measuring points (3) which are symmetrically arranged relative to the coordinate origin are positioned on the same isothermal circular line.

5. The bulk concrete temperature control system of claim 1, wherein: the temperature control section is provided with four temperature control sections, the temperature control section sequentially comprises a first section, a second section, a third section and a fourth section from bottom to top, the distance between the first section and the bottom surface of the mass concrete is not more than 0.5m, the distance between the first section and the second section and the distance between the second section and the third section are both 0.8-1.2m, and the fourth section is the top surface of the mass concrete.

6. The bulk concrete temperature control system of claim 1, wherein: the water inlet and the water outlet of each cooling water pipe (4) extend horizontally and are exposed out of the side wall of the large-volume concrete.

7. The temperature control method of the large-volume concrete temperature control system based on claim 1 is characterized by comprising the following steps:

before the large-volume concrete is poured, a cooling water pipe (4), a first measuring point (1) and a second measuring point (2) are respectively embedded in each temperature control section;

after the large-volume concrete is poured, acquiring temperature signals of each measuring point in the concrete hardening process, and acquiring each temperature parameter according to the temperature signals;

when any temperature parameter exceeds the threshold range, the water pump and the corresponding electromagnetic valve are controlled to work, and the flow of the corresponding cooling water pipe (4) is adjusted until all the temperature parameters are within the threshold range.

8. The method of controlling temperature as set forth in claim 7, further including, prior to the pouring of the bulk concrete:

determining the temperature field distribution condition of the mass concrete through temperature field numerical simulation;

and obtaining a plurality of temperature control sections and a plurality of isothermal loop lines on each temperature control section according to the distribution condition of the temperature field.

9. The temperature control method according to claim 8, wherein in the temperature control section other than the lowermost and uppermost ones, the number of second measuring points (2) on the Y-axis positive half axis and the X-axis negative half axis is even; after pre-buried condenser tube (4), first measurement station (1) and second measurement station (2), still include:

in the temperature control cross section except the lowermost part and the uppermost part, third measuring points (3) are arranged on a Y-axis negative half shaft and an X-axis positive half shaft, the number of the third measuring points (3) on the Y-axis negative half shaft is half of the number of the second measuring points (2) on the Y-axis positive half shaft, the number of the third measuring points (3) on the X-axis positive half shaft is half of the number of the second measuring points (2) on the X-axis negative half shaft, each third measuring point (3) is provided with the second measuring points (2) which are symmetrically arranged relative to the coordinate origin, and the second measuring points (2) and the third measuring points (3) which are symmetrically arranged relative to the coordinate origin are positioned on the same isothermal circular line.

10. The temperature control method of claim 7, wherein before collecting the temperature of each point during the hardening of the concrete, the method further comprises:

setting the threshold value range of each temperature parameter of the mass concrete of each time node;

the temperature parameters comprise the measured temperature and the temperature change rate of each measuring point of the mass concrete.

Technical Field

The application relates to the technical field of mass concrete construction, in particular to a mass concrete temperature control system and method.

Background

The mass concrete is mass concrete with the minimum geometric dimension of concrete structure entity not less than 1 m. At present, the construction application of mass concrete in bridge infrastructure tends to be wide. The larger the plane size of the large-volume concrete, the larger the temperature force generated by the restraint action, and if measures for controlling the temperature are not adopted properly, when the temperature stress exceeds the tensile force limit value which can be born by the concrete, cracks are easy to generate.

In the related art, the adopted temperature control method is to embed heat dissipation materials such as water pipes in the concrete and take heat out of the concrete by utilizing the flow of cooling water so as to reduce the internal temperature. However, in terms of effect, when the embedded heat dissipation material is used for cooling, actual construction conditions cannot be accurately combined, the defects that the cooling speed is too slow, too fast or the cooling cannot be stopped in time exist, and the like exist, and further, the risk is brought to mass concrete construction.

Disclosure of Invention

The utility model aims to provide a bulky concrete temperature control system and method to solve the problem that the actual construction condition can not be accurately combined for cooling in the related art, which brings risks to the bulky concrete construction.

This application first aspect provides a bulky concrete temperature control system, bulky concrete by lower supreme a plurality of control by temperature change cross-sections that have to every control by temperature change cross-section's center is the origin of coordinates, and two straight lines through origin of coordinates and mutually perpendicular are X axle and Y axle respectively, and above-mentioned temperature control system includes:

the cooling water pipe is provided with a plurality of layers, and each layer of cooling water pipe is arranged in one temperature control section;

a first measurement point arranged at the coordinate origin;

a plurality of second measuring points which are respectively arranged on a Y-axis positive half shaft and an X-axis negative half shaft of the temperature control section;

one end of the water pump is connected to each cooling water pipe through a plurality of electromagnetic valves, and the other end of the water pump is connected with the cooling water tank;

and the control host is used for receiving the temperature signals of the first measuring points and the second measuring points, acquiring each temperature parameter according to the temperature signals, and controlling the water pump and the corresponding electromagnetic valve to work when any temperature parameter exceeds the threshold range.

In some embodiments, the control host is further configured to set a threshold range of each temperature parameter of the bulk concrete at each time node;

the temperature parameters comprise the measured temperature and the temperature change rate of each measuring point of the mass concrete.

In some embodiments, the number and arrangement positions of the second measuring points of the lowermost and uppermost temperature-controlled cross sections are the same, and the number and arrangement positions of the second measuring points of each temperature-controlled cross section other than the lowermost and uppermost temperature-controlled cross sections are the same.

In some embodiments, each section has a plurality of isothermal loops;

in the temperature control section except for the lowermost part and the uppermost part, the number of second measuring points on the Y-axis positive half shaft and the X-axis negative half shaft is even, third measuring points are respectively arranged on the Y-axis negative half shaft and the X-axis positive half shaft, the number of the third measuring points on the Y-axis negative half shaft is half of the number of the second measuring points on the Y-axis positive half shaft, the number of the third measuring points on the X-axis positive half shaft is half of the number of the second measuring points on the X-axis negative half shaft, each third measuring point has second measuring points which are symmetrically arranged relative to the coordinate origin, and the second measuring points and the third measuring points which are symmetrically arranged relative to the coordinate origin are positioned on the same isothermal circular line.

In some embodiments, the number of the temperature control sections is four, and the temperature control sections sequentially include a first section, a second section, a third section and a fourth section from bottom to top, the distance between the first section and the bottom surface of the mass concrete is not more than 0.5m, the distance between the first section and the second section and the distance between the second section and the third section are both 0.8-1.2m, and the fourth section is the top surface of the mass concrete.

In some embodiments, the water inlet and the water outlet of each cooling water pipe extend horizontally and are exposed out of the side wall of the mass concrete.

The second aspect of the present application provides a temperature control method based on the above bulk concrete temperature control system, which includes the steps of:

before the large-volume concrete is poured, a cooling water pipe, a first measuring point and a second measuring point are respectively embedded in each temperature control section;

after the large-volume concrete is poured, acquiring temperature signals of each measuring point in the concrete hardening process, and acquiring each temperature parameter according to the temperature signals;

when any temperature parameter exceeds the threshold range, the water pump and the corresponding electromagnetic valve are controlled to work, and the flow of the corresponding cooling water pipe is adjusted until all the temperature parameters are within the threshold range.

In some embodiments, before the pouring of the bulk concrete, the method further includes:

determining the temperature field distribution condition of the mass concrete through temperature field numerical simulation;

and obtaining a plurality of temperature control sections and a plurality of isothermal loop lines on each temperature control section according to the distribution condition of the temperature field.

In some embodiments, in the temperature control section except for the lowermost temperature control section and the uppermost temperature control section, the number of the second measuring points on the Y-axis positive half shaft and the X-axis negative half shaft is even; after the cooling water pipe, the first measuring point and the second measuring point are arranged, the method further comprises the following steps:

and in the temperature control section except the lowermost and uppermost temperature control sections, third measuring points are arranged on the Y-axis negative half shaft and the X-axis positive half shaft, the number of the third measuring points on the Y-axis negative half shaft is half of the number of the second measuring points on the Y-axis positive half shaft, the number of the third measuring points on the X-axis positive half shaft is half of the number of the second measuring points on the X-axis negative half shaft, each third measuring point has a second measuring point which is symmetrically arranged relative to the coordinate origin, and the second measuring point and the third measuring point which are symmetrically arranged relative to the coordinate origin are positioned on the same isothermal ring line.

In some embodiments, before the acquiring the temperature of each measuring point in the concrete hardening process, the method further includes:

setting the threshold value range of each temperature parameter of the mass concrete of each time node;

the temperature parameters comprise the measured temperature and the temperature change rate of each measuring point of the mass concrete.

The beneficial effect that technical scheme that this application provided brought includes:

according to the temperature control system and the temperature control method for the mass concrete, each layer of cooling water pipe is arranged in one temperature control section of the mass concrete, one first measuring point and a plurality of second measuring points are arranged in each temperature control section, and after the control host receives temperature signals of the first measuring points and the second measuring points, each temperature parameter can be obtained according to the temperature signals, so that each temperature parameter is judged, and when any temperature parameter exceeds the threshold range, the water pump and the corresponding electromagnetic valve are controlled to work to adjust the flow of the corresponding cooling water pipe until each temperature parameter is within the threshold range, so that the temperature control process is simple, the operation is convenient, and the temperature control effect is good.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic layout of temperature controlled cross sections other than the lowermost and uppermost temperature controlled cross sections in an embodiment of the present application;

FIG. 2 is a schematic layout of the lowermost and uppermost temperature-controlled cross-sections in an embodiment of the present application;

fig. 3 is a flowchart of a temperature control method in an embodiment of the present application.

Reference numerals:

1. a first measuring point; 2. a second measuring point; 3. a third measuring point; 4. and cooling the water pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The embodiment of the application provides a large-volume concrete temperature control system and method, which can solve the problem that the risk is brought to large-volume concrete construction because the temperature cannot be accurately reduced by combining with actual construction conditions in the related technology.

As shown in fig. 1 and 2, the large-volume concrete temperature control system according to the embodiment of the present application is configured to perform temperature control on large-volume concrete after pouring, the large-volume concrete has a plurality of temperature control cross sections from bottom to top, a center of each temperature control cross section is taken as an origin of coordinates, and two straight lines passing through the origin of coordinates and perpendicular to each other are taken as an X axis and a Y axis, respectively. The temperature control system comprises a cooling water pipe 4, a first measuring point 1, a second measuring point 2, a water pump and a control host.

The cooling water pipes 4 are provided with a plurality of layers, and each layer of cooling water pipe 4 is arranged in one temperature control section of the mass concrete. I.e. the number of cooling water tubes 4 is the same as the number of temperature controlled sections.

The first measuring point 1 is arranged at the coordinate original point, namely, a first measuring point is arranged in each temperature control section.

The second measuring points 2 are multiple, and the multiple second measuring points 2 are respectively arranged on a Y-axis positive half shaft and an X-axis negative half shaft of the temperature control section. On each temperature control section, the number of the second measuring points 2 on the positive half shaft of the Y axis and the number of the second measuring points 2 on the negative half shaft of the X axis can be the same or different.

One end of the water pump is connected to the water inlet of each cooling water pipe 4 through a plurality of electromagnetic valves, and the other end of the water pump is connected with the cooling water tank. The water outlet of each cooling water pipe 4 is communicated with the cooling water tank.

The control host is used for receiving the temperature signals of the first measuring points 1 and the second measuring points 2, obtaining temperature parameters according to the temperature signals, and controlling the water pump and the corresponding electromagnetic valve to work when any temperature parameter exceeds the threshold range.

In the large-volume concrete temperature control system of the embodiment, each temperature control section is internally provided with a layer of cooling water pipe 4, a first measuring point 1 and a plurality of second measuring points 2, after receiving temperature signals of each first measuring point and each second measuring point through the control host, each temperature parameter can be obtained according to the temperature signals, and then each temperature parameter is judged, and when any temperature parameter exceeds the threshold range, the water pump and the corresponding electromagnetic valve are controlled to work to adjust the flow of the corresponding cooling water pipe 4 until each temperature parameter is within the threshold range, so that the temperature control process is simple, the operation is convenient, and the temperature control effect is good.

In this embodiment, the control host is further configured to set a threshold range of each temperature parameter of the mass concrete at each time node.

The temperature parameters comprise the measured temperature and the temperature change rate of each measuring point of the mass concrete. The control host is also used for respectively comparing the acquired measured temperature and the temperature change rate at each measuring point with each threshold range of the corresponding time node. If the measured temperature of a certain temperature control section is higher or the temperature change rate is slower, the flow of the cooling water pipe 4 of the layer can be increased so as to shorten the age difference between the temperature control sections as much as possible.

Preferably, the number and the arrangement positions of the second measuring points 2 of the lowest temperature control section and the second measuring points 2 of the uppermost temperature control section are the same, and the number and the arrangement positions of the second measuring points 2 of each temperature control section except the lowest temperature control section and the uppermost temperature control section are the same.

Optionally, the number of the temperature control sections is four, the temperature control sections sequentially include a first section, a second section, a third section and a fourth section from bottom to top, the distance between the first section and the bottom surface of the mass concrete is not more than 0.5m, the distance between the first section and the second section and the distance between the second section and the third section are both 0.8-1.2m, and the fourth section is the top surface of the mass concrete.

Furthermore, each section is provided with a plurality of isothermal loop lines, namely, the temperature of each point on each isothermal loop line is the same or the difference value does not exceed a preset temperature range.

In the embodiment, in the temperature control sections except for the lowermost temperature control section and the uppermost temperature control section, the number of the second measuring points 2 on the Y-axis positive semi-axis and the X-axis negative semi-axis is even, the Y-axis negative semi-axis and the X-axis positive semi-axis are respectively provided with the third measuring points 3, the number of the third measuring points 3 on the Y-axis negative semi-axis is half of the number of the second measuring points 2 on the Y-axis positive semi-axis, the number of the third measuring points 3 on the X-axis positive semi-axis is half of the number of the second measuring points 2 on the X-axis negative semi-axis, each third measuring point 3 has the second measuring points 2 symmetrically arranged relative to the coordinate origin, and the second measuring points 2 and the third measuring points 3 symmetrically arranged relative to the coordinate origin are located on the same isothermal ring line.

Optionally, the number of the second measuring points 2 on the Y-axis positive half shaft and the X-axis negative half shaft is the same in the temperature control sections other than the lowermost temperature control section and the uppermost temperature control section.

In this embodiment, the mass concrete is a cylindrical concrete, and the cross-sectional diameter is 4m and the height is 3 m. The section at the position 0.5m away from the bottom surface of the mass concrete is taken as a first section, the section at the position 1.0m away from the first section is taken as a second section, and the section at the position 1.0m away from the second section is taken as a third section, so that the distance between the third section and the fourth section is 0.5 m.

The first cross section and the fourth cross section are both provided with a first measuring point 1 and three second measuring points 2, a positive half shaft of a Y axis of the first cross section is provided with one second measuring point 2, and a negative half shaft of an X axis of the first cross section is provided with two second measuring points 2. The second section and the third section are respectively provided with a first measuring point 1, four second measuring points 2 and two third measuring points 3, the Y-axis positive half shaft and the X-axis negative half shaft are respectively provided with two second measuring points 2, the X-axis positive half shaft and the Y-axis negative half shaft are respectively provided with one third measuring point 3, and the third measuring points 3 are arranged at positions 1000mm away from the origin of coordinates. In addition, each second measuring point 2 close to the coordinate origin is arranged at a position 1000mm away from the coordinate origin, and each second measuring point 2 far away from the coordinate origin is arranged at a position 1930mm away from the coordinate origin.

In this embodiment, the first measuring point 1, the second measuring point 2, and the third measuring point 3 are all intelligent temperature sensors, each temperature sensor is connected to a multi-point temperature automatic tester, and the multi-point temperature automatic tester sends each acquired temperature signal to the control host through a standard serial interface. The control host of the embodiment is a computer.

The computer automatically collects and stores data information, and in the temperature monitoring control process, the monitoring data are analyzed in time, whether the temperature reduction of the mass concrete is normal or not is judged in advance according to the change trend of the temperature field, and if the temperature field change rate of a certain temperature control section is abnormal, the water inlet flow of the cooling water is adjusted in time so as to ensure that all temperature parameters are within the threshold range.

Optionally, according to actual construction requirements, the temperature stress of mass concrete can be accurately predicted and analyzed, then in the implementation process of temperature control, actual measurement data or test data such as concrete strength, elastic modulus and the like are analyzed in time, if the actual measurement value deviates from the value of the theoretical calculation parameter, the actual measurement parameter is substituted into the concrete simulation model in time for correction calculation, and subsequent temperature control measures are adjusted if necessary.

Alternatively, the water inlet and the water outlet of each of the cooling water pipes 4 extend horizontally and are exposed to the side wall of the mass concrete. Each cooling water pipe 4 can independently control and adjust water flow of the water inlet so as to improve the temperature control effect.

Wherein, through the inside cooling water circulation system who forms between multilayer condenser tube 4, water pump and the coolant tank, can cut down the inside temperature peak value of concrete, the inside cooling rate of control prevents that the inside temperature of concrete from shrinking at the excessive speed, and the difference in temperature between the upper and lower layer still can be controlled simultaneously, shortens the age difference between the layer as far as possible, prevents the crack between the layer that probably appears.

As shown in fig. 3, the temperature control method based on the bulk concrete temperature control system according to the embodiment of the present application includes the steps of:

s1, before large-volume concrete is poured, a cooling water pipe 4, a first measuring point 1 and a second measuring point 2 are respectively embedded in each temperature control section in advance.

In this embodiment, according to the symmetry characteristic of a large-volume concrete structure, a measuring point is arranged for each temperature control section.

And S2, after the large-volume concrete is poured, collecting the temperature of each measuring point in the concrete hardening process, and acquiring each temperature parameter according to the temperature signal.

Wherein, the mold-entering temperature is required to be controlled in the pouring process.

And S3, when any temperature parameter exceeds the threshold range, controlling the water pump and the corresponding electromagnetic valve to work, and adjusting the flow of the corresponding cooling water pipe 4 until all temperature parameters are within the threshold range.

In this embodiment, after the large-volume concrete is poured, the surface of the large-volume concrete can be subjected to secondary slurry collection and trowelling, and then the top surface of the large-volume concrete is sequentially covered with a layer of plastic film, a layer of geotextile and a layer of waterproof cloth for moisture preservation and heat preservation.

In other embodiments, surface heat preservation measures suitable for construction seasons can be selected through temperature control theoretical calculation and construction environment conditions, the internal and external temperature difference of the concrete is reduced, the temperature field distribution in the concrete is uniform as much as possible, and the temperature gradient is reduced.

Preferably, in step S1, before the pouring of the large-volume concrete, the method further includes:

firstly, the temperature field distribution condition of the mass concrete is determined through temperature field numerical simulation. And then, obtaining a plurality of temperature control sections and a plurality of isothermal loop lines on each temperature control section according to the distribution condition of the temperature field.

The temperature field characteristics and the temperature stress of the mass concrete can be predicted and analyzed in advance through the numerical simulation of the temperature field of the mass concrete according to the actual conditions of the engineering, so that a plurality of temperature control sections can be divided reasonably, and a reasonable arrangement scheme of the cooling water pipes 4 and the measuring points can be formulated.

Further, before the step S2 of collecting the temperature of each measuring point in the concrete hardening process, the method further includes: and setting the threshold value range of each temperature parameter of the mass concrete of each time node.

In this embodiment, the temperature parameters include a measured temperature and a temperature change rate at each measurement point of the mass concrete.

Optionally, the threshold range of each temperature parameter of each time node may be set by temperature field numerical simulation based on actual engineering, or may be set based on a large-volume concrete construction specification and construction history data.

In the present embodiment, in the temperature-controlled cross sections other than the lowermost and uppermost ones, the numbers of the second measuring points 2 on the Y-axis positive half axis and the X-axis negative half axis are both even numbers.

After the cooling water pipe 4, the first measuring point 1 and the second measuring point 2 are embedded, the method further comprises the following steps:

in the temperature control cross section except the lowest and the uppermost, third measuring points 3 are arranged on the Y-axis negative half shaft and the X-axis positive half shaft, the number of the third measuring points 3 on the Y-axis negative half shaft is half of the number of the second measuring points 2 on the Y-axis positive half shaft, the number of the third measuring points 3 on the X-axis positive half shaft is half of the number of the second measuring points 2 on the X-axis negative half shaft, each third measuring point 3 has the second measuring points 2 which are symmetrically arranged relative to the coordinate origin, and the second measuring points 2 and the third measuring points 3 which are symmetrically arranged relative to the coordinate origin are positioned on the same isothermal ring line.

Wherein 1/2 of bulky concrete cross section is used as main test area, can directly reflect temperature field change characteristics, 1/2 is used as contrast test area in addition to arrange the comparison measuring point, carry out the temperature comparison.

In this embodiment, an area between the X-axis forward direction and the Y-axis forward direction is taken as a first quadrant, a straight line passing through an origin of coordinates, a part of which is located in the first quadrant, and an included angle of 45 degrees with the X-axis is taken as a boundary, the boundary divides the temperature control cross section into two parts, namely a main test area and a comparison test area, the second test point 2 is a test point in the main test area, and the third test point 3 is a comparison test point in the comparison test area. When the temperatures measured by the second measuring point 2 and the third measuring point 3 which are symmetrically arranged relative to the origin of the coordinate are the same or the difference value between the temperatures does not exceed the preset temperature range, the reliability that the temperatures of the areas at two sides of the boundary are symmetrically distributed is high, and the temperature field of the main testing area can represent the temperature field of the comparison testing area.

Optionally, two temperature sensors may be provided at each measurement point to prevent damage to one of them and ensure data integrity.

Optionally, before the mass concrete is poured, the adiabatic temperature rise and the peak maximum temperature of the mass concrete can be reduced through the selection of concrete raw materials and a mixing proportion test based on a concrete proportioning principle. For example, the moderate heat portland cement is adopted to slow down the hydration reaction speed of the cement and the increase speed of the early strength of the concrete, so that the temperature rise value in the concrete is reduced. In addition, a polycarboxylic acid high-efficiency water reducing agent can be added into the moderate heat portland cement to effectively reduce the dosage of each concrete cement, and further reduce the hydration heat temperature rise of the concrete.

Optionally, the bulk concrete raw materials of this embodiment include cement, fly ash, coarse aggregate, fine aggregate, and a water reducing agent, and before the coarse aggregate is added to the concrete mixing plant, the coarse aggregate may be washed with water in advance to reduce the temperature.

The temperature control method of the embodiment is suitable for all the temperature control systems, can set the threshold value range of all temperature parameters of the mass concrete of all the time nodes according to the actual conditions of the engineering, and further reasonably sets the temperature control scheme, so that the change of the internal temperature field of the concrete is developed according to the expected direction, and the temperature control method is simple to operate and good in temperature control effect.

The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.