Intelligent determination method and system for closing temperature of large-span structure based on structural strain energy

Abstract

The present invention discloses a method and system for intelligently determining the closing temperature of a large-span structure based on structural strain energy, and relates to the field of structural engineering. The method comprises calculating a first strain energy according to a first environment; calculating a second strain energy according to a second environment; determining a closing time period of the large-span structure, mapping to obtain a closing temperature, and calculating a third strain energy of the overall structure; combining the third strain energy with the first strain energy and the second strain energy to calculate the first strain energy difference and the second strain energy difference of the overall structure; calculating and obtaining an objective function, and outputting a variable strain energy difference; extracting a target strain energy difference of a target component in the overall structure in the variable strain energy difference, and mapping to determine the closing temperature of the structure; determining a closing temperature threshold, and combining the closing temperature of the structure to determine the closing stability. The method solves the technical problem of closing condition selection in the construction process of a large-span engineering structure in the prior art, and achieves the technical effect of intelligently determining the closing temperature.

Description

Technical Field

[0001] The present invention relates to the field of structural engineering, and in particular to a method and system for intelligently determining the closing temperature of a large-span structure based on structural strain energy. Background Art

[0002] During the closing process of large-span structures, temperature changes have a significant impact on their shape, size and stress distribution. However, traditional methods for determining the closing temperature mainly rely on experience or simple calculation models, which makes it difficult to achieve precise control. Therefore, how to determine the optimal closing temperature to ensure the stability and safety of large-span structures is an urgent problem to be solved. Summary of the invention

[0003] The embodiments of the present application provide a method and system for intelligently determining the closing temperature of a large-span structure based on structural strain energy, which solves the technical problem of selecting closing conditions during the construction of large-span engineering structures in the prior art.

[0004] In view of the above problems, an embodiment of the present application provides a method and system for intelligently determining the closing temperature of a large-span structure based on structural strain energy.

[0005] A first aspect of an embodiment of the present application provides a method for intelligently determining the closing temperature of a large-span structure based on structural strain energy, the method comprising:

[0006] According to the first environment, calculate the first strain energy of the whole structure in the large-span structure;

[0007] calculating a second strain energy of the overall structure according to the second environment;

[0008] Determine a closing time period of the long-span structure, map and obtain a closing temperature, and calculate the third strain energy of the overall structure according to the closing temperature;

[0009] According to the closing temperature, the third strain energy is combined with the first strain energy and the second strain energy to calculate a first strain energy difference and a second strain energy difference of the overall structure;

[0010] Calculate and obtain an objective function according to the first strain energy difference and the second strain energy difference, and output a variable strain energy difference;

[0011] Extracting a target strain energy difference value of a target component in the overall structure from the variable strain energy difference values, and mapping to determine a closing temperature of the structure, wherein the target strain energy difference value is a minimum value among the variable strain energy differences;

[0012] A closing temperature threshold is determined, and the closing stability is determined in combination with the closing temperature of the structure.

[0013] A second aspect of the embodiments of the present application provides a system for intelligently determining the closing temperature of a large-span structure based on structural strain energy, the system comprising:

[0014] A first strain energy module, the first strain energy module being used to calculate a first strain energy of an overall structure in the long-span structure according to a first environment;

[0015] A second strain energy module, the second strain energy module is used to calculate a second strain energy of the overall structure according to a second environment;

[0016] A temperature module, the temperature module is used to determine the closing time period of the long-span structure, map to obtain the closing temperature, and calculate the third strain energy of the overall structure according to the closing temperature;

[0017] a calculation module, the calculation module being used to combine the third strain energy with the first strain energy and the second strain energy according to the closing temperature, and to calculate a first strain energy difference and a second strain energy difference of the overall structure;

[0018] A function module, the function module is used to calculate and obtain an objective function according to the first strain energy difference and the second strain energy difference, and output a variable strain energy difference;

[0019] A difference module, the difference module is used to extract the target strain energy difference of the target component in the overall structure from the variable strain energy difference, and map and determine the closing temperature of the structure, wherein the target strain energy difference is the minimum value in the variable strain energy difference;

[0020] A judgment module is used to determine a closing temperature threshold, and determine whether closing stability is obtained in combination with the closing temperature of the structure.

[0021] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0022] First, according to the first environment, the first strain energy of the overall structure in the long-span structure is calculated. Then, according to the second environment, the second strain energy of the overall structure is calculated. Then, the closing time period in the long-span structure is determined, and the closing temperature is mapped through this time period. According to this closing temperature, the third strain energy of the overall structure is calculated. Then, the third strain energy is combined with the first strain energy and the second strain energy to calculate the first strain energy difference and the second strain energy difference. Then, the objective function is calculated according to the first strain energy difference and the second strain energy difference, and the variable strain energy difference is output. After that, the target strain energy difference of the target component in the overall structure in the variable strain energy difference is extracted. Then, the closing temperature of the structure is determined by mapping. It is worth noting that the target strain energy difference here is actually the minimum value in the variable strain energy difference. Finally, a closing temperature threshold is set, and the stability of the closing is judged in combination with the closing temperature of this structure. The technical problem of closing condition selection in the construction process of large-span engineering structures in the prior art is solved, and the technical effect of intelligently determining the closing temperature is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic flow chart of a method for intelligently determining the closing temperature of a large-span structure based on structural strain energy provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the structure of a system for intelligently determining the closing temperature of a large-span structure based on structural strain energy provided in an embodiment of the present application.

[0026] Description of reference numerals: first strain energy module 11 , second strain energy module 12 , temperature module 13 , calculation module 14 , function module 15 , difference module 16 , judgment module 17 . DETAILED DESCRIPTION

[0027] The embodiments of the present application solve the technical problem of closing condition selection during the construction of large-span engineering structures in the prior art by providing a method and system for intelligently determining the closing temperature of a large-span structure based on structural strain energy.

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0029] It should be noted that the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or server that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or modules that are not explicitly listed or inherent to these processes, methods, products or devices.

[0030] Embodiment 1

[0031] like Figure 1 As shown, the embodiment of the present application provides a method for intelligently determining the closing temperature of a large-span structure based on structural strain energy, wherein the method includes:

[0032] According to the first environment, calculate the first strain energy of the whole structure in the large-span structure;

[0033] calculating a second strain energy of the overall structure according to the second environment;

[0034] Research shows that due to the difference in ambient temperature, the strain energy of the overall structure in summer decreases with the increase of closing temperature, and the strain energy in winter increases with the increase of closing temperature. In order to reduce the huge difference in additional internal stress (strain) caused by closing temperature in different seasons, which in turn affects the safety of the structure, the absolute value of the difference in strain energy of the overall structure in summer and winter is used as the objective function. The area with the maximum additional internal stress (strain) caused by closing temperature in different seasons is relatively stable, reducing the adverse effects on the structure.

[0035] Collect strain data of large-span structures in different seasons and at different temperatures, including the strain values ​​of the structure at different temperatures, temperature variation range, etc. Use these strain data and the corresponding temperature values ​​to construct a functional relationship between strain energy and temperature. Using the functional relationship, the first strain energy of the overall structure can be calculated based on the temperature conditions of the first environment. The first environment refers to the environmental conditions of the large-span structure in summer. The first strain energy is used to describe the overall deformation and stress conditions of the structure in summer. By calculating and analyzing the first strain energy, the stability and safety of the structure, as well as the response and behavior of the structure under different environmental conditions can be understood. At the same time, the first strain energy can also be used to predict the response and behavior of the structure, as well as to optimize the structural design and improve the performance and efficiency of the structure.

[0036] Similarly, according to the second environment, the second strain energy of the overall structure is calculated by a similar method. The second environment refers to the environmental conditions of the large-span structure in winter. The second strain energy is used to describe the overall deformation and stress of the structure in winter.

[0037] U Si is the first strain energy of component i in the overall structure in the first environment, U Wi is the second strain energy of the component i in the overall structure according to the second environment.

[0038]

[0039] σ Wix , σ Wiy , σ Wiz , τ Wixy , τ Wixz , τ Wiyz is the stress of component i in the overall structure at the lowest temperature in winter;

[0040] ε Wix , ε Wiy , ε Wiy , γ Wixy , γ Wixz , γ Wiyz is the strain of component i in the overall structure at the lowest temperature in winter;

[0041] σ Six , σ Siy , σ Siz , τ Sixy , τ Sixz , τ Siyz is the stress of component i in the overall structure at the highest temperature in summer;

[0042] ε Six , ε Siy , ε Siz , γ Sixy , γ Sixz , γ Siyz is the strain of component i in the overall structure at the highest temperature in summer.

[0043] Determine a closing time period of the long-span structure, map and obtain a closing temperature, and calculate the third strain energy of the overall structure according to the closing temperature;

[0044] Further, the method of determining the closing time period of the large-span structure, mapping to obtain the closing temperature, and calculating the third strain energy of the overall structure according to the closing temperature includes:

[0045] According to the closing process of the large-span structure, the closing time period of the large-span structure is divided;

[0046] Collecting the closing temperature of the large-span structure during the closing period;

[0047] The third strain energy of the overall structure at the closing temperature is obtained by calculation.

[0048] The start and end time of the closing process is determined through technical specifications, construction plans, etc., and the time period is divided into several sub-time periods according to the duration of the closing process. Each sub-time period corresponds to a specific stage of the closing process. For each sub-time period, the closing temperature data is collected, and the closing temperature data comes from a temperature sensor, construction records or other relevant data sources. According to the closing temperature data of each sub-time period, the third strain energy of the overall structure at this temperature is calculated. The third strain energy refers to the strain energy generated by the overall structure at the closing temperature due to the external force during the closing process of the large-span structure. This strain energy is usually generated due to the external force acting on the structure during the closing process, such as support force, hoisting force, etc., as well as the influence of temperature changes.

[0049]

[0050] U Cki is the temperature T of the component i in the overall structure k the third strain energy when closing;

[0051] σ Ckix , σ Ckiy , σ Ckiz , τ Ckixy , τ Ckixz , τ Ckiyz is the temperature of component i in the overall structure k Stress during closing;

[0052] ε Ckix , ε Ckiy , ε Ckiz , γ Ckixy , γ Ckixz , γ Ckiyz is the temperature of component i in the overall structure k Strain when closing.

[0053] According to the closing temperature, the third strain energy is combined with the first strain energy and the second strain energy to calculate a first strain energy difference and a second strain energy difference of the overall structure;

[0054] Further, the method of combining the third strain energy with the first strain energy and the second strain energy according to the closing temperature to calculate a first strain energy difference and a second strain energy difference of the overall structure includes:

[0055] calculating an absolute value of a difference between the third strain energy and the first strain energy of the overall structure at the closing temperature to generate the first strain energy difference;

[0056] The absolute value of the difference between the third strain energy and the second strain energy of the overall structure at the closing temperature is calculated to generate the second strain energy difference.

[0057] If the first strain energy and the third strain energy of the overall structure are known, the first strain energy difference can be obtained by direct subtraction. That is: the first strain energy difference = the first strain energy - the third strain energy. The first strain energy difference refers to the absolute value of the difference between the first strain energy and the third strain energy generated by the overall structure at the closing temperature due to the external force during the closing process of the large-span structure, which can be used to evaluate the energy change of the structure during the closing process, as well as the stability and safety of the structure at the closing temperature.

[0058]

[0059] ΔU Ski For the overall structure at the temperature T k The first strain energy difference when closing.

[0060] Similarly, if the second strain energy and the third strain energy of the overall structure are known, the second strain energy difference can be obtained by direct subtraction. That is: the second strain energy difference = the second strain energy - the third strain energy. The second strain energy difference refers to the absolute value of the difference between the second strain energy and the third strain energy generated by the overall structure at the closing temperature due to the external force during the closing process of the large-span structure, which can be used to evaluate the energy change of the structure during the closing process, as well as the stability and safety of the structure at the closing temperature.

[0061]

[0062] ΔU Wki For the overall structure at the temperature T k The second strain energy difference when closing.

[0063] Calculate and obtain an objective function according to the first strain energy difference and the second strain energy difference, and output a variable strain energy difference;

[0064] The first strain energy difference and the second strain energy difference are used as input variables to set an objective function. According to the calculation result of the objective function, the variable strain energy difference is output. The objective function is as follows:

[0065]

[0066] ΔU k For the overall structure at the temperature Tk The variable strain energy difference when closing.

[0067] Extracting a target strain energy difference value of a target component in the overall structure from the variable strain energy difference values, and mapping to determine a closing temperature of the structure, wherein the target strain energy difference value is a minimum value among the variable strain energy differences;

[0068] Furthermore, the method of extracting the target strain energy difference of the target component in the overall structure from the variable strain energy difference and mapping to determine the closing temperature of the structure includes:

[0069] Determine a closing temperature set, and extract a first closing temperature and a second closing temperature;

[0070] Matching and obtaining a first temperature strain energy difference of the first closing temperature and a second temperature strain energy difference of the second closing temperature in the variable strain energy difference, and comparing to obtain a smaller strain energy difference;

[0071] Extracting a third temperature strain energy difference value of the third closing temperature, performing a difference comparison with the smaller strain energy difference value, and replacing the smaller strain energy difference value to obtain the smaller strain energy difference value;

[0072] The minimum strain energy difference is obtained by iterative comparison, and the structural closing temperature corresponding to the minimum strain energy difference is obtained.

[0073] The range of closing temperature is determined according to the characteristics of the long-span structure, construction conditions, environmental factors, etc., and a series of sample points representing the closing temperature are selected according to the determined closing temperature range to form a closing temperature set, wherein the closing temperature set includes multiple closing temperatures, such as different values ​​from low temperature to high temperature. Among them, these sample points can be evenly distributed within the range or selected according to certain rules. Two representative temperatures are selected from the extracted closing temperature set as the first closing temperature and the second closing temperature. These two temperatures are usually selected as the minimum and maximum values ​​in the closing temperature set, or other values ​​with special significance, such as the average value, the median, etc. The first temperature strain energy difference of the first closing temperature and the second temperature strain energy difference of the second closing temperature are extracted from the stored variable strain energy difference. The sizes of the two differences are compared, and the smaller one is selected as the smaller strain energy difference. The third temperature strain energy difference of the third closing temperature is extracted from the stored variable strain energy difference. The size of the third temperature strain energy difference is compared with the smaller strain energy difference. If the third temperature strain energy difference is smaller, the original smaller strain energy difference is replaced. The smallest one is selected from the stored variable strain energy difference values ​​as the minimum strain energy difference value. The structural closing temperature corresponding to the minimum strain energy difference value is obtained, and this temperature is the final structural closing temperature. Through the above steps, the final structural closing temperature can be determined, and this temperature can represent the optimal closing state of the overall structure during the closing process.

[0074] A closing temperature threshold is determined, and the closing stability is determined in combination with the closing temperature of the structure.

[0075] Furthermore, the method of determining the closing temperature threshold and determining the closing stability in combination with the closing temperature of the structure includes:

[0076] Calculate a ratio between the structural closing temperature and the closing temperature threshold;

[0077] The ratio result is obtained and determined as the stability coefficient, and the position of the stability coefficient and the stability regression line is determined to determine the closing stability.

[0078] The ratio of the closing temperature of the structure to the closing temperature threshold is calculated to obtain the stability coefficient, which can be used to evaluate the stability and safety of the structure. Generally speaking, the smaller the ratio, the more stable the structure. A stability regression line is obtained through experiments or simulations, and the stability regression line represents the critical stability value of the structure under different conditions. If the stability coefficient is less than the stability regression line, the structure can be considered stable; if the stability coefficient is greater than the stability regression line, the structure can be considered unstable. The closing stability is judged based on the comparison results. If the structure is stable, the closing is stable; if the structure is unstable, the closing is unstable.

[0079] In summary, the embodiments of the present application have at least the following technical effects:

[0080] First, according to the first environment, the first strain energy of the overall structure in the long-span structure is calculated. Then, according to the second environment, the second strain energy of the overall structure is calculated. Then, the closing time period in the long-span structure is determined, and the closing temperature is mapped through this time period. According to this closing temperature, the third strain energy of the overall structure is calculated. Then, the third strain energy is combined with the first strain energy and the second strain energy to calculate the first strain energy difference and the second strain energy difference. Then, the objective function is calculated according to the first strain energy difference and the second strain energy difference, and the variable strain energy difference is output. After that, the target strain energy difference of the target component in the overall structure in the variable strain energy difference is extracted. Then, the closing temperature of the structure is determined by mapping. It is worth noting that the target strain energy difference here is actually the minimum value in the variable strain energy difference. Finally, a closing temperature threshold is set, and the stability of the closing is judged in combination with the closing temperature of this structure. The technical problem of closing condition selection in the construction process of large-span engineering structures in the prior art is solved, and the technical effect of intelligently determining the closing temperature is achieved.

[0081] Embodiment 2

[0082] Based on the same inventive concept as the method for intelligently determining the closing temperature of a large-span structure based on structural strain energy in the aforementioned embodiment, Figure 2 As shown, the present application provides a system for intelligently determining the closing temperature of a large-span structure based on structural strain energy. The system and method embodiments in the present application are based on the same inventive concept. The system includes:

[0083] A first strain energy module 11 , a second strain energy module 12 , a temperature module 13 , a calculation module 14 , a function module 15 , a difference module 16 , and a judgment module 17 .

[0084] A first strain energy module 11, the first strain energy module 11 is used to calculate a first strain energy of the overall structure in the long-span structure according to a first environment;

[0085] A second strain energy module 12, the second strain energy module 12 is used to calculate a second strain energy of the overall structure according to a second environment;

[0086] A temperature module 13, the temperature module 13 is used to determine the closing time period of the large-span structure, map to obtain the closing temperature, and calculate the third strain energy of the overall structure according to the closing temperature;

[0087] A calculation module 14, the calculation module 14 is used to combine the third strain energy with the first strain energy and the second strain energy according to the closing temperature, and calculate a first strain energy difference and a second strain energy difference of the overall structure;

[0088] A function module 15, wherein the function module 15 is used to calculate and obtain an objective function according to the first strain energy difference and the second strain energy difference, and output a variable strain energy difference;

[0089] A difference module 16, the difference module 16 is used to extract a target strain energy difference of a target component in the overall structure from the variable strain energy difference, and map and determine the closing temperature of the structure, wherein the target strain energy difference is the minimum value in the variable strain energy difference;

[0090] The judging module 17 is used to determine a closing temperature threshold, and judge the closing stability in combination with the closing temperature of the structure.

[0091] Furthermore, the temperature module 13 is used to perform the following method:

[0092] According to the closing process of the large-span structure, the closing time period of the large-span structure is divided;

[0093] Collecting the closing temperature of the large-span structure during the closing period;

[0094] The third strain energy of the overall structure at the closing temperature is obtained by calculation.

[0095] Furthermore, the calculation module 14 is used to execute the following method:

[0096] calculating an absolute value of a difference between the third strain energy and the first strain energy of the overall structure at the closing temperature to generate the first strain energy difference;

[0097] The absolute value of the difference between the third strain energy and the second strain energy of the overall structure at the closing temperature is calculated to generate the second strain energy difference.

[0098] Furthermore, the function module 15 is used to execute the following method:

[0099] The objective function is shown as follows:

[0100]

[0101] Among them, U Si is the first strain energy of component i in the overall structure in the first environment, U Wi is the second strain energy of the component i in the overall structure under the second environment, U Cki is the temperature T of the component i in the overall structure k The third strain energy during closing, ΔU Ski For the overall structure at the temperature T k The first strain energy difference when closing, ΔU Wki For the overall structure at the temperature T k The second strain energy difference when closing, the objective function ΔU k For the overall structure at the temperature T k The variable strain energy difference when closing.

[0102] Furthermore, the difference module 16 is used to perform the following method:

[0103] Determine a closing temperature set, and extract a first closing temperature and a second closing temperature;

[0104] Matching and obtaining a first temperature strain energy difference of the first closing temperature and a second temperature strain energy difference of the second closing temperature in the variable strain energy difference, and comparing to obtain a smaller strain energy difference;

[0105] Extracting a third temperature strain energy difference value of the third closing temperature, performing a difference comparison with the smaller strain energy difference value, and replacing the smaller strain energy difference value to obtain the smaller strain energy difference value;

[0106] The minimum strain energy difference is obtained by iterative comparison, and the structural closing temperature corresponding to the minimum strain energy difference is obtained.

[0107] Furthermore, the judging module 17 is used to execute the following method:

[0108] Calculate a ratio between the structural closing temperature and the closing temperature threshold;

[0109] The ratio result is obtained and determined as the stability coefficient, and the position of the stability coefficient and the stability regression line is determined to determine the closing stability.

[0110] It should be noted that the above-mentioned sequence of the embodiments of the present application is only for description and does not represent the advantages and disadvantages of the embodiments. And the above-mentioned specific embodiments of this specification are described. Other embodiments are within the scope of the attached claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0111] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0112] This specification and drawings are merely exemplary illustrations of the present application and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, a person skilled in the art may make various modifications and variations to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the present application and its equivalents, the present application intends to include these modifications and variations.

Claims

1. An intelligent method for determining the closing temperature of a large-span structure based on structural strain energy, characterized in that: The method comprises: According to the first environment, calculate the first strain energy of the whole structure in the large-span structure; calculating a second strain energy of the overall structure according to the second environment; Determine a closing time period of the long-span structure, map and obtain a closing temperature, and calculate the third strain energy of the overall structure according to the closing temperature; According to the closing temperature, the third strain energy is combined with the first strain energy and the second strain energy to calculate a first strain energy difference and a second strain energy difference of the overall structure; Calculate and obtain an objective function according to the first strain energy difference and the second strain energy difference, and output a variable strain energy difference; Extracting a target strain energy difference value of a target component in the overall structure from the variable strain energy difference values, and mapping to determine a closing temperature of the structure, wherein the target strain energy difference value is a minimum value among the variable strain energy differences; Determine a closing temperature threshold, and determine the closing stability in combination with the closing temperature of the structure; The step of combining the third strain energy with the first strain energy and the second strain energy according to the closing temperature to calculate a first strain energy difference and a second strain energy difference of the overall structure includes: calculating an absolute value of a difference between the third strain energy and the first strain energy of the overall structure at the closing temperature to generate the first strain energy difference; calculating an absolute value of a difference between the third strain energy and the second strain energy of the overall structure at the closing temperature to generate the second strain energy difference; The objective function is shown as follows: Among them, U Si is the first strain energy of component i in the overall structure in the first environment, U Wi is the second strain energy of component i in the overall structure in the second environment, U Cki is the temperature of the component i in the overall structure k The third strain energy during closing, ΔU Ski For the overall structure at the temperature T k The first strain energy difference when closing, ΔU Wki For the overall structure at the temperature T k The second strain energy difference when closing, the objective function ΔU k For the overall structure at the temperature T k The variable strain energy difference when closing.

2. The method according to claim 1, characterized in that The method of determining the closing time period of the large-span structure, mapping to obtain the closing temperature, and calculating the third strain energy of the overall structure according to the closing temperature includes: According to the closing process of the large-span structure, the closing time period of the large-span structure is divided; Collecting the closing temperature of the large-span structure during the closing period; The third strain energy of the overall structure at the closing temperature is obtained by calculation.

3. The method according to claim 1, characterized in that The method of extracting the target strain energy difference of the target component in the overall structure from the variable strain energy difference and mapping to determine the closing temperature of the structure comprises: Determine a closing temperature set, and extract a first closing temperature and a second closing temperature; Matching and obtaining a first temperature strain energy difference of the first closing temperature and a second temperature strain energy difference of the second closing temperature in the variable strain energy difference, and comparing to obtain a smaller strain energy difference; Extracting a third temperature strain energy difference value of the third closing temperature, performing a difference comparison with the smaller strain energy difference value, and replacing the smaller strain energy difference value to obtain the smaller strain energy difference value; The minimum strain energy difference is obtained by iterative comparison, and the structural closing temperature corresponding to the minimum strain energy difference is obtained.

4. The method according to claim 1, characterized in that The method of determining the closing temperature threshold and combining the closing temperature of the structure to determine the closing stability includes: Calculate a ratio between the structural closing temperature and the closing temperature threshold; The ratio result is determined as the stability coefficient, and the position of the stability coefficient and the stability regression line is determined to determine the closing stability.

5. An intelligent determination system for closing temperature of a large-span structure based on structural strain energy, characterized in that: The system is used to implement the method for intelligently determining the closing temperature of a large-span structure based on structural strain energy as described in any one of claims 1 to 4, and comprises: A first strain energy module, the first strain energy module being used to calculate a first strain energy of an overall structure in the long-span structure according to a first environment; A second strain energy module, the second strain energy module is used to calculate a second strain energy of the overall structure according to a second environment; A temperature module, the temperature module is used to determine the closing time period of the long-span structure, map to obtain the closing temperature, and calculate the third strain energy of the overall structure according to the closing temperature; a calculation module, the calculation module being used to combine the third strain energy with the first strain energy and the second strain energy according to the closing temperature, and to calculate a first strain energy difference and a second strain energy difference of the overall structure; A function module, the function module is used to calculate and obtain an objective function according to the first strain energy difference and the second strain energy difference, and output a variable strain energy difference; A difference module, the difference module is used to extract the target strain energy difference of the target component in the overall structure from the variable strain energy difference, and map and determine the closing temperature of the structure, wherein the target strain energy difference is the minimum value in the variable strain energy difference; A judgment module is used to determine a closing temperature threshold, and determine whether closing stability is obtained in combination with the closing temperature of the structure.

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