CN117232671B - Temperature measurement method and system for mass concrete temperature field - Google Patents
Temperature measurement method and system for mass concrete temperature field Download PDFInfo
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Abstract
The invention discloses a temperature measurement method and a temperature measurement system for a mass concrete temperature field, which relate to the technical field of temperature measurement. On the other hand, compared with theoretical data, the real-time data has scientific basis to monitor the mass concrete temperature field, improves the accuracy of monitoring and greatly ensures the stability of mass concrete engineering.
Description
Technical Field
The invention relates to the technical field of temperature measurement, in particular to a temperature measurement method and system for a mass concrete temperature field.
Background
The mass concrete has irreplaceable importance in the modern engineering field, can provide strong bearing capacity, excellent durability and earthquake resistance, and has higher construction efficiency and sustainability. Therefore, the method is widely applied to large infrastructure engineering and building projects, and plays an important role in promoting social and economic development. However, in the construction process of large-volume concrete, the volume of the concrete is large, the internal temperature rises faster, the problem of thermal stress caused by temperature difference is easy to cause, and when the temperature difference stress exceeds the ultimate tensile strength of the concrete, cracks are generated in the concrete structure. Once cracks form, they have a serious impact on the integrity, impermeability and durability of the concrete structure. Therefore, the temperature of the mass concrete needs to be monitored, but the traditional mass concrete temperature monitoring technology has certain limitation in real-time, the collection and transmission of temperature data usually needs to take a long time, the requirement on quick response to temperature change cannot be met, constructors cannot know the change of the mass concrete temperature in advance as soon as possible, excessive temperature stress is avoided, and the generation of temperature cracks is prevented or the cracks are controlled within a certain limit.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide a temperature measuring method and a temperature measuring system for a mass concrete temperature field.
In order to solve the technical problems, the invention adopts the following technical scheme: the invention provides a temperature measurement method for a mass concrete temperature field, which comprises the following steps:
step one, obtaining casting body information: obtaining the cement consumption, the hydration heat, the specific heat capacity, the density, the casting temperature and the casting body age corresponding to the target casting body;
step two, actual temperature difference analysis: acquiring preset temperature acquisition points of a target casting body, distributing acquisition time points according to preset time intervals, further acquiring temperatures corresponding to the acquisition time points of the target casting body, analyzing to obtain highest temperatures corresponding to the acquisition time points of the target casting body according to the temperatures corresponding to the acquisition time points of the target casting body, acquiring surface layer temperatures corresponding to the acquisition time points of the target casting body, analyzing to obtain actual surface-to-surface temperature differences corresponding to the acquisition time points of the target casting body according to the highest temperatures and the surface layer temperatures corresponding to the acquisition time points of the target casting body, and judging whether the actual surface-to-surface temperature differences corresponding to the acquisition time points of the target casting body are qualified or not according to the actual surface-to-surface temperature differences corresponding to the acquisition time points of the target casting body;
step three, actual temperature rise analysis: analyzing according to the cement consumption, the hydration heat, the specific heat capacity and the density corresponding to the target casting body to obtain standard adiabatic temperature rise corresponding to the target casting body, analyzing according to the standard adiabatic temperature rise corresponding to the target casting body and the casting temperature corresponding to the target casting body to obtain standard raising temperature corresponding to the target casting body, analyzing according to the highest temperature corresponding to each acquisition time point of the target casting body and the casting temperature corresponding to the target casting body to obtain actual raising temperature corresponding to each acquisition time point of the target casting body, and judging whether the actual raising temperature corresponding to each acquisition time point of the target casting body is qualified or not;
fourth, judging the security level: analyzing to obtain a security level evaluation coefficient corresponding to the target pouring body based on the actual rising temperature, the actual temperature difference between the outside and the inside corresponding to each acquisition time point of the target pouring body and the pouring body age corresponding to the target pouring body, and judging the security level corresponding to the target pouring body according to the security level evaluation coefficient corresponding to the target pouring body;
fifthly, displaying the casting state: and displaying the security level corresponding to the target pouring body.
Preferably, the analysis obtains the highest temperature corresponding to each acquisition time point of the target pouring body, and the specific analysis process is as follows: and arranging the temperatures corresponding to the collecting time points of the target pouring body in descending order according to the order from large to small, and further arranging the highest temperature corresponding to the collecting time points of the target pouring body as the first position, thereby obtaining the highest temperature corresponding to the collecting time points of the target pouring body.
Preferably, the analysis obtains the actual surface-to-interior temperature difference corresponding to each acquisition time point of the target pouring body, and the specific analysis process is as follows: calculating the difference value between the highest temperature and the surface temperature corresponding to each acquisition time point of the target casting body, obtaining the difference value between the highest temperature and the surface temperature corresponding to each acquisition time point of the target casting body, and taking the difference value between the highest temperature and the surface temperature corresponding to each acquisition time point of the target casting body as the actual surface-to-inner temperature difference corresponding to each acquisition time point of the target casting body, thereby obtaining the actual surface-to-inner temperature difference corresponding to each acquisition time point of the target casting body.
Preferably, the specific judging process is as follows: comparing the actual temperature difference between the surface and the inner surfaces corresponding to each acquisition time point of the target casting body with a preset temperature difference threshold, judging that the actual temperature difference between the surface and the inner surfaces corresponding to the acquisition time point of the target casting body is unqualified if the actual temperature difference between the surface and the inner surfaces corresponding to a certain acquisition time point of the target casting body is larger than or equal to the preset temperature difference threshold, and judging that the actual temperature difference between the surface and the inner surfaces corresponding to the acquisition time point of the target casting body is qualified if the actual temperature difference between the surface and the inner surfaces corresponding to a certain acquisition time point of the target casting body is smaller than the preset temperature difference threshold.
Preferably, the analysis obtains standard adiabatic temperature rise corresponding to the target pouring body, and the specific analysis process is as follows:
by calculation formulaCalculating to obtain standard adiabatic temperature rise corresponding to the target casting body, wherein +.>For standard adiabatic temperature rise corresponding to a target casting body, M is the cement dosage corresponding to the target casting body, Q is the hydration heat of a cementing material corresponding to the target casting body, C is the specific heat capacity corresponding to the target casting body, and the cement dosage is equal to the specific heat capacity of the cementing material corresponding to the target casting body, and the cement dosage is equal to the cement dosage of the cementing material>For the corresponding density of the target casting body, +.>And (5) setting a standard adiabatic temperature rise correction factor.
Preferably, the analysis obtains the standard rising temperature corresponding to the target pouring body, and the specific analysis process is as follows: and carrying out difference value calculation on the standard adiabatic temperature rise corresponding to the target pouring body and the pouring temperature corresponding to the target pouring body, and calculating to obtain the rising value temperature corresponding to the target pouring body, so that the rising value temperature corresponding to the target pouring body is used as the standard rising value temperature corresponding to the target pouring body.
Preferably, the analysis obtains the actual rising temperature corresponding to each acquisition time point of the target pouring body, and the specific analysis process is as follows: calculating the difference between the highest temperature corresponding to a certain acquisition time point of the target pouring body and the pouring temperature corresponding to the target pouring body to obtain the actual rising temperature corresponding to the certain acquisition time point of the target pouring body, and obtaining the actual rising temperature corresponding to each acquisition time point of the target pouring body in this way.
Preferably, the specific judging process is as follows: comparing the standard rising temperature corresponding to the target pouring body with the actual rising temperature corresponding to each collecting time point of the target pouring body, if the actual rising temperature corresponding to a certain collecting time point of the target pouring body is larger than the standard rising temperature corresponding to the target pouring body, judging that the actual rising temperature corresponding to the collecting time point of the target pouring body is unqualified, and if the actual rising temperature corresponding to a certain collecting time point of the target pouring body is smaller than or equal to the standard rising temperature corresponding to the target pouring body, judging that the actual rising temperature corresponding to the collecting time point of the target pouring body is qualified, and judging whether the actual rising temperature corresponding to each collecting time point of the target pouring body is qualified or not in this way.
Preferably, the specific judging process of the safety level corresponding to the judging target pouring body is as follows:
by calculation formulaCalculating to obtain a safety grade evaluation coefficient corresponding to the target casting body, wherein +.>Evaluating the coefficient for the security level corresponding to the target casting, < ->For the actual rising temperature corresponding to the ith acquisition time point of the target pouring body, i is the number corresponding to each acquisition time point, and +.>，/>The actual temperature difference between the outside and the inside corresponding to the ith acquisition time point of the target casting body is +.>For the casting body age corresponding to the target casting body, ts is a set rising temperature reference value, tb is a set surface-inner temperature difference reference value, N is a set casting body age reference value, and +_is a set casting body age reference value>Casting body age difference value for set reference, < +.>、/>、/>Respectively setting weight factors corresponding to the actual rising temperature, the actual temperature difference between the outside and the inside and the casting body age;
comparing the security level evaluation coefficient corresponding to the target casting body with the security level evaluation coefficient interval corresponding to each security level stored in the database, and taking the security level stored in the database as the security level corresponding to the target casting body if the security level evaluation coefficient corresponding to the target casting body is in the security level evaluation coefficient interval corresponding to a certain security level stored in the database.
The present invention provides in a second aspect a thermometry system for a bulk concrete temperature field comprising:
the casting body information acquisition module is used for acquiring the cement dosage, the cementing material hydration heat, the specific heat capacity, the density, the casting temperature and the casting body age corresponding to the target casting body;
the actual temperature difference analysis module is used for acquiring preset temperature acquisition points of the target casting body, distributing each acquisition time point according to preset time intervals, further acquiring the temperature corresponding to each acquisition point of the target casting body, analyzing according to the temperature corresponding to each acquisition point of the target casting body to obtain the highest temperature corresponding to each acquisition time point of the target casting body, acquiring the surface layer temperature corresponding to each acquisition time point of the target casting body, analyzing according to the highest temperature and the surface layer temperature corresponding to each acquisition time point of the target casting body to obtain the actual surface-to-inner temperature difference corresponding to each acquisition time point of the target casting body, and judging whether the actual surface-to-inner temperature difference corresponding to each acquisition time point of the target casting body is qualified or not according to the actual surface-to-inner temperature difference corresponding to each acquisition time point of the target casting body;
the actual temperature rise analysis module is used for analyzing to obtain standard adiabatic temperature rise corresponding to the target casting body according to the cement consumption, the hydration heat, the specific heat capacity and the density of the cementing material corresponding to the target casting body, analyzing to obtain standard temperature rise corresponding to the target casting body according to the standard adiabatic temperature rise corresponding to the target casting body and the casting temperature corresponding to the target casting body, analyzing to obtain actual temperature rise corresponding to each acquisition time point of the target casting body according to the highest temperature corresponding to each acquisition time point of the target casting body and the casting temperature corresponding to the target casting body, and judging whether the actual temperature rise corresponding to each acquisition time point of the target casting body is qualified or not;
the safety level judging module is used for analyzing and obtaining a safety level evaluation coefficient corresponding to the target pouring body based on the actual rising temperature, the actual surface-inner temperature difference and the pouring body age corresponding to the target pouring body, which are corresponding to each acquisition time point of the target pouring body, and judging the safety level corresponding to the target pouring body according to the safety level evaluation coefficient corresponding to the target pouring body;
and the display terminal is used for displaying the security level corresponding to the target pouring body.
The invention has the beneficial effects that: the invention provides a temperature measurement method and a temperature measurement system for a mass concrete temperature field, which improve the real-time property of temperature data in the mass concrete temperature field by analyzing the temperature of each acquisition point in each acquisition time point in the mass concrete temperature field, can facilitate constructors to know the temperature change of the mass concrete in advance as soon as possible, avoid the phenomenon of temperature crack generation caused by overlarge temperature stress generated in the mass concrete, and strive for constructors to control the temperature crack within a certain limit, thereby reducing the loss of enterprises. On the other hand, compared with theoretical data, the real-time data has scientific basis to monitor the mass concrete temperature field, improves the accuracy of monitoring and greatly ensures the stability of mass concrete engineering.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the steps of the method of the present invention.
FIG. 2 is a schematic diagram of the system structure of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides a temperature measuring method for a mass concrete temperature field, comprising the steps of,
step one, obtaining casting body information: obtaining the cement consumption, the hydration heat, the specific heat capacity, the density, the casting temperature and the casting body age corresponding to the target casting body;
the cement consumption, the hydration heat of the cementing material, the specific heat capacity, the density, the casting temperature and the casting body age corresponding to the target casting body are obtained from a database.
Step two, actual temperature difference analysis: acquiring preset temperature acquisition points of a target casting body, distributing acquisition time points according to preset time intervals, further acquiring temperatures corresponding to the acquisition time points of the target casting body, analyzing to obtain highest temperatures corresponding to the acquisition time points of the target casting body according to the temperatures corresponding to the acquisition time points of the target casting body, acquiring surface layer temperatures corresponding to the acquisition time points of the target casting body, analyzing to obtain actual surface-to-surface temperature differences corresponding to the acquisition time points of the target casting body according to the highest temperatures and the surface layer temperatures corresponding to the acquisition time points of the target casting body, and judging whether the actual surface-to-surface temperature differences corresponding to the acquisition time points of the target casting body are qualified or not according to the actual surface-to-surface temperature differences corresponding to the acquisition time points of the target casting body;
the temperature acquisition points preset by the target casting body are acquired from the database.
The surface layer temperature is the temperature 50mm away from the outer surface of the casting body, and the surface-inner temperature difference is the difference between the highest temperature corresponding to the casting body and the surface layer temperature.
It should be noted again that the temperature difference between the outside and the inside of the casting body is not more than 25 ℃.
In a specific embodiment, the analysis obtains the highest temperature corresponding to each collection time point of the target casting body, and the specific analysis process is as follows: and arranging the temperatures corresponding to the collecting time points of the target pouring body in descending order according to the order from large to small, and further arranging the highest temperature corresponding to the collecting time points of the target pouring body as the first position, thereby obtaining the highest temperature corresponding to the collecting time points of the target pouring body.
In a specific embodiment, the analysis obtains the actual temperature difference between the surface and the inner surface corresponding to each acquisition time point of the target casting body, and the specific analysis process is as follows: calculating the difference value between the highest temperature and the surface temperature corresponding to each acquisition time point of the target casting body, obtaining the difference value between the highest temperature and the surface temperature corresponding to each acquisition time point of the target casting body, and taking the difference value between the highest temperature and the surface temperature corresponding to each acquisition time point of the target casting body as the actual surface-to-inner temperature difference corresponding to each acquisition time point of the target casting body, thereby obtaining the actual surface-to-inner temperature difference corresponding to each acquisition time point of the target casting body.
In a specific embodiment, the specific determining process includes: comparing the actual temperature difference between the surface and the inner surfaces corresponding to each acquisition time point of the target casting body with a preset temperature difference threshold, judging that the actual temperature difference between the surface and the inner surfaces corresponding to the acquisition time point of the target casting body is unqualified if the actual temperature difference between the surface and the inner surfaces corresponding to a certain acquisition time point of the target casting body is larger than or equal to the preset temperature difference threshold, and judging that the actual temperature difference between the surface and the inner surfaces corresponding to the acquisition time point of the target casting body is qualified if the actual temperature difference between the surface and the inner surfaces corresponding to a certain acquisition time point of the target casting body is smaller than the preset temperature difference threshold.
Step three, actual temperature rise analysis: analyzing according to the cement consumption, the hydration heat, the specific heat capacity and the density corresponding to the target casting body to obtain standard adiabatic temperature rise corresponding to the target casting body, analyzing according to the standard adiabatic temperature rise corresponding to the target casting body and the casting temperature corresponding to the target casting body to obtain standard raising temperature corresponding to the target casting body, analyzing according to the highest temperature corresponding to each acquisition time point of the target casting body and the casting temperature corresponding to the target casting body to obtain actual raising temperature corresponding to each acquisition time point of the target casting body, and judging whether the actual raising temperature corresponding to each acquisition time point of the target casting body is qualified or not;
it should be noted that the temperature rise of the casting body is not preferably greater than 50 ℃.
In a specific embodiment, the analysis obtains a standard adiabatic temperature rise corresponding to the target casting body, and the specific analysis process is as follows:
by calculation formulaCalculating to obtain standard adiabatic temperature rise corresponding to the target casting body, wherein +.>For standard adiabatic temperature rise corresponding to a target casting body, M is the cement dosage corresponding to the target casting body, Q is the hydration heat of a cementing material corresponding to the target casting body, C is the specific heat capacity corresponding to the target casting body, and the cement dosage is equal to the specific heat capacity of the cementing material corresponding to the target casting body, and the cement dosage is equal to the cement dosage of the cementing material>For the corresponding density of the target casting body, +.>And (5) setting a standard adiabatic temperature rise correction factor.
In a specific embodiment, the analysis obtains a standard rising temperature corresponding to the target casting body, and the specific analysis process is as follows: and carrying out difference value calculation on the standard adiabatic temperature rise corresponding to the target pouring body and the pouring temperature corresponding to the target pouring body, and calculating to obtain the rising value temperature corresponding to the target pouring body, so that the rising value temperature corresponding to the target pouring body is used as the standard rising value temperature corresponding to the target pouring body.
In a specific embodiment, the analysis obtains the actual rising temperature corresponding to each acquisition time point of the target casting body, and the specific analysis process is as follows: calculating the difference between the highest temperature corresponding to a certain acquisition time point of the target pouring body and the pouring temperature corresponding to the target pouring body to obtain the actual rising temperature corresponding to the certain acquisition time point of the target pouring body, and obtaining the actual rising temperature corresponding to each acquisition time point of the target pouring body in this way.
In a specific embodiment, the specific determining process includes the following steps of: comparing the standard rising temperature corresponding to the target pouring body with the actual rising temperature corresponding to each collecting time point of the target pouring body, if the actual rising temperature corresponding to a certain collecting time point of the target pouring body is larger than the standard rising temperature corresponding to the target pouring body, judging that the actual rising temperature corresponding to the collecting time point of the target pouring body is unqualified, and if the actual rising temperature corresponding to a certain collecting time point of the target pouring body is smaller than or equal to the standard rising temperature corresponding to the target pouring body, judging that the actual rising temperature corresponding to the collecting time point of the target pouring body is qualified, and judging whether the actual rising temperature corresponding to each collecting time point of the target pouring body is qualified or not in this way.
Fourth, judging the security level: analyzing to obtain a security level evaluation coefficient corresponding to the target pouring body based on the actual rising temperature, the actual temperature difference between the outside and the inside corresponding to each acquisition time point of the target pouring body and the pouring body age corresponding to the target pouring body, and judging the security level corresponding to the target pouring body according to the security level evaluation coefficient corresponding to the target pouring body;
it should be noted that, the corresponding security level of the casting body may be set to a first level, a second level and a third level, where the first level is < the second level is < the third level.
In a specific embodiment, the specific determining process of determining the security level corresponding to the target casting body is as follows:
by calculation formulaCalculating to obtain a safety grade evaluation coefficient corresponding to the target casting body, wherein +.>Evaluating the coefficient for the security level corresponding to the target casting, < ->For the actual rising temperature corresponding to the ith acquisition time point of the target pouring body, i is the number corresponding to each acquisition time point, and +.>，/>The actual temperature difference between the outside and the inside corresponding to the ith acquisition time point of the target casting body is +.>For the casting body age corresponding to the target casting body, ts is a set rising temperature reference value, tb is a set surface-inner temperature difference reference value, N is a set casting body age reference value, and +_is a set casting body age reference value>Casting body age difference value for set reference, < +.>、/>、/>Respectively setting weight factors corresponding to the actual rising temperature, the actual temperature difference between the outside and the inside and the casting body age;
comparing the security level evaluation coefficient corresponding to the target casting body with the security level evaluation coefficient interval corresponding to each security level stored in the database, and taking the security level stored in the database as the security level corresponding to the target casting body if the security level evaluation coefficient corresponding to the target casting body is in the security level evaluation coefficient interval corresponding to a certain security level stored in the database.
Fifthly, displaying the casting state: and displaying the security level corresponding to the target pouring body.
Referring to fig. 2, a temperature measurement system for a mass concrete temperature field, comprising:
the casting body information acquisition module is used for acquiring the cement dosage, the cementing material hydration heat, the specific heat capacity, the density, the casting temperature and the casting body age corresponding to the target casting body;
the actual temperature difference analysis module is used for acquiring preset temperature acquisition points of the target casting body, distributing each acquisition time point according to preset time intervals, further acquiring the temperature corresponding to each acquisition point of the target casting body, analyzing according to the temperature corresponding to each acquisition point of the target casting body to obtain the highest temperature corresponding to each acquisition time point of the target casting body, acquiring the surface layer temperature corresponding to each acquisition time point of the target casting body, analyzing according to the highest temperature and the surface layer temperature corresponding to each acquisition time point of the target casting body to obtain the actual surface-to-inner temperature difference corresponding to each acquisition time point of the target casting body, and judging whether the actual surface-to-inner temperature difference corresponding to each acquisition time point of the target casting body is qualified or not according to the actual surface-to-inner temperature difference corresponding to each acquisition time point of the target casting body;
the actual temperature rise analysis module is used for analyzing to obtain standard adiabatic temperature rise corresponding to the target casting body according to the cement consumption, the hydration heat, the specific heat capacity and the density of the cementing material corresponding to the target casting body, analyzing to obtain standard temperature rise corresponding to the target casting body according to the standard adiabatic temperature rise corresponding to the target casting body and the casting temperature corresponding to the target casting body, analyzing to obtain actual temperature rise corresponding to each acquisition time point of the target casting body according to the highest temperature corresponding to each acquisition time point of the target casting body and the casting temperature corresponding to the target casting body, and judging whether the actual temperature rise corresponding to each acquisition time point of the target casting body is qualified or not;
the safety level judging module is used for analyzing and obtaining a safety level evaluation coefficient corresponding to the target pouring body based on the actual rising temperature, the actual surface-inner temperature difference and the pouring body age corresponding to the target pouring body, which are corresponding to each acquisition time point of the target pouring body, and judging the safety level corresponding to the target pouring body according to the safety level evaluation coefficient corresponding to the target pouring body;
and the display terminal is used for displaying the security level corresponding to the target pouring body.
According to the embodiment of the invention, the temperature of each collecting point in each collecting time point in the mass concrete temperature field is analyzed, so that the real-time performance of temperature data in the mass concrete temperature field is improved, the temperature change of the mass concrete can be known in advance by constructors as soon as possible, the phenomenon of temperature cracks caused by overlarge temperature stress generated in the mass concrete is avoided, the time for controlling the temperature cracks within a certain limit is striven for constructors, and the loss of enterprises is reduced. On the other hand, compared with theoretical data, the real-time data has scientific basis to monitor the mass concrete temperature field, improves the accuracy of monitoring and greatly ensures the stability of mass concrete engineering.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (7)
1. A method for measuring temperature in a mass concrete temperature field, comprising the steps of:
step one, obtaining casting body information: obtaining the cement consumption, the hydration heat, the specific heat capacity, the density, the casting temperature and the casting body age corresponding to the target casting body;
step two, actual temperature difference analysis: acquiring preset temperature acquisition points of a target casting body, distributing acquisition time points according to preset time intervals, further acquiring temperatures corresponding to the acquisition time points of the target casting body, analyzing to obtain highest temperatures corresponding to the acquisition time points of the target casting body according to the temperatures corresponding to the acquisition time points of the target casting body, acquiring surface layer temperatures corresponding to the acquisition time points of the target casting body, analyzing to obtain actual surface-to-surface temperature differences corresponding to the acquisition time points of the target casting body according to the highest temperatures and the surface layer temperatures corresponding to the acquisition time points of the target casting body, and judging whether the actual surface-to-surface temperature differences corresponding to the acquisition time points of the target casting body are qualified or not according to the actual surface-to-surface temperature differences corresponding to the acquisition time points of the target casting body;
the analysis is carried out to obtain the actual surface-to-interior temperature difference corresponding to each acquisition time point of the target pouring body, and the specific analysis process is as follows: calculating the difference value between the highest temperature and the surface temperature corresponding to each acquisition time point of the target casting body, obtaining the difference value between the highest temperature and the surface temperature corresponding to each acquisition time point of the target casting body, and taking the difference value between the highest temperature and the surface temperature corresponding to each acquisition time point of the target casting body as the actual surface-to-interior temperature difference corresponding to each acquisition time point of the target casting body, thereby obtaining the actual surface-to-interior temperature difference corresponding to each acquisition time point of the target casting body;
step three, actual temperature rise analysis: analyzing according to the cement consumption, the hydration heat, the specific heat capacity and the density corresponding to the target casting body to obtain standard adiabatic temperature rise corresponding to the target casting body, analyzing according to the standard adiabatic temperature rise corresponding to the target casting body and the casting temperature corresponding to the target casting body to obtain standard raising temperature corresponding to the target casting body, analyzing according to the highest temperature corresponding to each acquisition time point of the target casting body and the casting temperature corresponding to the target casting body to obtain actual raising temperature corresponding to each acquisition time point of the target casting body, and judging whether the actual raising temperature corresponding to each acquisition time point of the target casting body is qualified or not;
the actual rising temperature corresponding to each acquisition time point of the target pouring body is obtained through analysis, and the specific analysis process is as follows: calculating the difference between the highest temperature corresponding to a certain acquisition time point of the target pouring body and the pouring temperature corresponding to the target pouring body to obtain the actual rising temperature corresponding to the certain acquisition time point of the target pouring body, and obtaining the actual rising temperature corresponding to each acquisition time point of the target pouring body in this way;
fourth, judging the security level: analyzing to obtain a security level evaluation coefficient corresponding to the target pouring body based on the actual rising temperature, the actual temperature difference between the outside and the inside corresponding to each acquisition time point of the target pouring body and the pouring body age corresponding to the target pouring body, and judging the security level corresponding to the target pouring body according to the security level evaluation coefficient corresponding to the target pouring body;
the judgment target is pouredThe corresponding safety level of the body is specifically judged as follows: by calculation formulaCalculating to obtain a safety grade evaluation coefficient corresponding to the target casting body, wherein +.>Evaluating the coefficient for the security level corresponding to the target casting, < ->For the actual rising temperature corresponding to the ith acquisition time point of the target pouring body, i is the number corresponding to each acquisition time point, and +.>，/>The actual temperature difference between the outside and the inside corresponding to the ith acquisition time point of the target casting body is +.>For the casting body age corresponding to the target casting body, ts is a set rising temperature reference value, tb is a set surface-inner temperature difference reference value, N is a set casting body age reference value, and +_is a set casting body age reference value>Casting body age difference value for set reference, < +.>、/>、/>Respectively setting weight factors corresponding to the actual rising temperature, the actual temperature difference between the outside and the inside and the casting body age;
comparing the security level evaluation coefficient corresponding to the target casting body with the security level evaluation coefficient interval corresponding to each security level stored in the database, and taking the security level stored in the database as the security level corresponding to the target casting body if the security level evaluation coefficient corresponding to the target casting body is in the security level evaluation coefficient interval corresponding to a certain security level stored in the database;
fifthly, displaying the casting state: and displaying the security level corresponding to the target pouring body.
2. The method for measuring the temperature of a mass concrete temperature field according to claim 1, wherein the analysis obtains the highest temperature corresponding to each acquisition time point of the target casting body, and the specific analysis process is as follows: and arranging the temperatures corresponding to the collecting time points of the target pouring body in descending order according to the order from large to small, and further arranging the highest temperature corresponding to the collecting time points of the target pouring body as the first position, thereby obtaining the highest temperature corresponding to the collecting time points of the target pouring body.
3. The method for measuring the temperature of a mass concrete temperature field according to claim 1, wherein the specific judging process is as follows: comparing the actual temperature difference between the surface and the inner surfaces corresponding to each acquisition time point of the target casting body with a preset temperature difference threshold, judging that the actual temperature difference between the surface and the inner surfaces corresponding to the acquisition time point of the target casting body is unqualified if the actual temperature difference between the surface and the inner surfaces corresponding to a certain acquisition time point of the target casting body is larger than or equal to the preset temperature difference threshold, and judging that the actual temperature difference between the surface and the inner surfaces corresponding to the acquisition time point of the target casting body is qualified if the actual temperature difference between the surface and the inner surfaces corresponding to a certain acquisition time point of the target casting body is smaller than the preset temperature difference threshold.
4. The method for measuring the temperature of a mass concrete temperature field according to claim 1, wherein the analysis obtains standard adiabatic temperature rise corresponding to a target casting body, and the specific analysis process is as follows:
by calculation formulaCalculating to obtain standard adiabatic temperature rise corresponding to the target casting body, wherein +.>For standard adiabatic temperature rise corresponding to a target casting body, M is the cement dosage corresponding to the target casting body, Q is the hydration heat of a cementing material corresponding to the target casting body, C is the specific heat capacity corresponding to the target casting body, and the cement dosage is equal to the specific heat capacity of the cementing material corresponding to the target casting body, and the cement dosage is equal to the cement dosage of the cementing material>For the corresponding density of the target casting body, +.>And (5) setting a standard adiabatic temperature rise correction factor.
5. The method for measuring the temperature of a mass concrete temperature field according to claim 1, wherein the analysis obtains a standard rise temperature corresponding to a target casting body, and the specific analysis process is as follows: and carrying out difference value calculation on the standard adiabatic temperature rise corresponding to the target pouring body and the pouring temperature corresponding to the target pouring body, and calculating to obtain the rising value temperature corresponding to the target pouring body, so that the rising value temperature corresponding to the target pouring body is used as the standard rising value temperature corresponding to the target pouring body.
6. The method for measuring the temperature of a mass concrete temperature field according to claim 1, wherein the specific judgment process is as follows: comparing the standard rising temperature corresponding to the target pouring body with the actual rising temperature corresponding to each collecting time point of the target pouring body, if the actual rising temperature corresponding to a certain collecting time point of the target pouring body is larger than the standard rising temperature corresponding to the target pouring body, judging that the actual rising temperature corresponding to the collecting time point of the target pouring body is unqualified, and if the actual rising temperature corresponding to a certain collecting time point of the target pouring body is smaller than or equal to the standard rising temperature corresponding to the target pouring body, judging that the actual rising temperature corresponding to the collecting time point of the target pouring body is qualified, and judging whether the actual rising temperature corresponding to each collecting time point of the target pouring body is qualified or not in this way.
7. A temperature measurement system for a mass concrete temperature field applying the temperature measurement method for a mass concrete temperature field according to any one of claims 1 to 6, comprising:
the casting body information acquisition module is used for acquiring the cement dosage, the cementing material hydration heat, the specific heat capacity, the density, the casting temperature and the casting body age corresponding to the target casting body;
the actual temperature difference analysis module is used for acquiring preset temperature acquisition points of the target casting body, distributing each acquisition time point according to preset time intervals, further acquiring the temperature corresponding to each acquisition point of the target casting body, analyzing according to the temperature corresponding to each acquisition point of the target casting body to obtain the highest temperature corresponding to each acquisition time point of the target casting body, acquiring the surface layer temperature corresponding to each acquisition time point of the target casting body, analyzing according to the highest temperature and the surface layer temperature corresponding to each acquisition time point of the target casting body to obtain the actual surface-to-inner temperature difference corresponding to each acquisition time point of the target casting body, and judging whether the actual surface-to-inner temperature difference corresponding to each acquisition time point of the target casting body is qualified or not according to the actual surface-to-inner temperature difference corresponding to each acquisition time point of the target casting body;
the actual temperature rise analysis module is used for analyzing to obtain standard adiabatic temperature rise corresponding to the target casting body according to the cement consumption, the hydration heat, the specific heat capacity and the density of the cementing material corresponding to the target casting body, analyzing to obtain standard temperature rise corresponding to the target casting body according to the standard adiabatic temperature rise corresponding to the target casting body and the casting temperature corresponding to the target casting body, analyzing to obtain actual temperature rise corresponding to each acquisition time point of the target casting body according to the highest temperature corresponding to each acquisition time point of the target casting body and the casting temperature corresponding to the target casting body, and judging whether the actual temperature rise corresponding to each acquisition time point of the target casting body is qualified or not;
the safety level judging module is used for analyzing and obtaining a safety level evaluation coefficient corresponding to the target pouring body based on the actual rising temperature, the actual surface-inner temperature difference and the pouring body age corresponding to the target pouring body, which are corresponding to each acquisition time point of the target pouring body, and judging the safety level corresponding to the target pouring body according to the safety level evaluation coefficient corresponding to the target pouring body;
and the display terminal is used for displaying the security level corresponding to the target pouring body.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150134895A (en) * | 2014-05-23 | 2015-12-02 | 한국과학기술원 | Method and apparatus for measuring adiabatic temperature-rise of concrete |
| CN110263490A (en) * | 2019-07-05 | 2019-09-20 | 中国三峡建设管理有限公司 | The interim face stress analysis method of concrete dam body |
| CN115855287A (en) * | 2023-02-07 | 2023-03-28 | 中国铁路济南局集团有限公司 | Temperature measuring method for large-volume concrete temperature field |
| CN116295925A (en) * | 2023-01-14 | 2023-06-23 | 中国水利水电第十一工程局有限公司 | Temperature gradient on-line monitoring method and system for oversized concrete structure |
| CN116971385A (en) * | 2023-07-25 | 2023-10-31 | 中铁北京工程局集团第二工程有限公司 | Temperature control anti-cracking method for mass concrete |
-
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- 2023-11-13 CN CN202311504539.6A patent/CN117232671B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150134895A (en) * | 2014-05-23 | 2015-12-02 | 한국과학기술원 | Method and apparatus for measuring adiabatic temperature-rise of concrete |
| CN110263490A (en) * | 2019-07-05 | 2019-09-20 | 中国三峡建设管理有限公司 | The interim face stress analysis method of concrete dam body |
| CN116295925A (en) * | 2023-01-14 | 2023-06-23 | 中国水利水电第十一工程局有限公司 | Temperature gradient on-line monitoring method and system for oversized concrete structure |
| CN115855287A (en) * | 2023-02-07 | 2023-03-28 | 中国铁路济南局集团有限公司 | Temperature measuring method for large-volume concrete temperature field |
| CN116971385A (en) * | 2023-07-25 | 2023-10-31 | 中铁北京工程局集团第二工程有限公司 | Temperature control anti-cracking method for mass concrete |
Non-Patent Citations (1)
| Title |
|---|
| 大体积混凝土温度场分析;聂凤玲;;甘肃科技(09);全文 * |
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