Method for determining temperature action of hyperstatic space structure based on indoor and outdoor temperature difference

Abstract

The application provides a kind of statically indeterminate space structure temperature action determination method based on indoor and outdoor temperature difference, belongs to civil engineering technical field.The method is analyzed by the actual structure of the inside and outside of building, and the internal structure model and the external structure model of statically indeterminate space structure are established respectively;Then the thermal properties of the materials used by the structure, the temperature field distribution calculation area and the external wind environment and external solar environment are extracted respectively, and the temperature field iterative calculation is carried out according to the pre-design calculation accuracy requirement, and the indoor and outdoor temperature field distribution law of the structure is obtained by numerical simulation analysis. The outdoor temperature field of the structure is divided by using the indoor and outdoor temperature field distribution law, and the partition temperature representative value is calculated;Finally, the temperature action value of each partition is calculated by combining the overall structure closing temperature value of building and the partition temperature representative value.The application considers the influence of indoor and outdoor temperature difference on the temperature action of statically indeterminate space structure, and can accurately calculate the temperature action distribution and value of structure.

Description

Technical Field

[0001] This application belongs to the field of civil engineering technology, specifically relating to a method for determining the temperature effect of a statically indeterminate spatial structure based on the indoor-outdoor temperature difference. Background Technology

[0002] Currently, many statically indeterminate spatial structures are designed using a combination of non-uniform outdoor and uniform indoor / outdoor temperatures. This approach considers both the non-uniform temperature field on the external surface and the uniform indoor temperature field under air conditioning operation. Staticly indeterminate spatial structures contain numerous constraints. When subjected to temperature effects, the structural members restrict each other's deformation, resulting in significant temperature stress. However, due to the high degree of static indeterminacy and complex operating conditions, the actual temperature field distribution during service differs from the non-uniform outdoor and uniform indoor temperature fields used in the design phase. Even under natural ventilation, the indoor temperature field exhibits significant non-uniformity. When these non-uniform indoor and outdoor temperatures act together, the stress in the structure will differ considerably from the design temperature conditions, especially for the stress in the beams. This is because the deformation is significantly restricted at the beams when there is a temperature difference between the internal and external temperatures. Therefore, it is necessary to explore the temperature effects of statically indeterminate spatial structures during service, considering the combined effects of indoor and outdoor temperature differences, to provide a theoretical basis for selecting temperature effects during the design phase.

[0003] In existing related technologies, the common method to obtain the temperature effect of statically indeterminate space structures during the design phase is to simulate the outdoor temperature field distribution of the structure and combine the outdoor non-uniform temperature field with the indoor uniform temperature field. However, this method only considers the outdoor non-uniform temperature effect and does not consider the indoor non-uniform temperature effect under natural ventilation conditions. It also ignores the influence of the indoor and outdoor temperature difference on the location of the structural beams. As a result, the temperature effect distribution and magnitude of the statically indeterminate space structure obtained are not accurate enough. Summary of the Invention

[0004] Therefore, this application provides a method for determining the temperature effect of a statically indeterminate space structure based on the indoor-outdoor temperature difference, which helps to solve the problem of low accuracy in obtaining the distribution and magnitude of the temperature effect of a statically indeterminate space structure in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] This application provides a method for determining the temperature effect of a statically indeterminate space structure based on the indoor-outdoor temperature difference, including:

[0007] Based on the actual structure of the building's interior and exterior surfaces, internal and external structural models of the statically indeterminate spatial structure are established respectively.

[0008] The properties of the materials used in the actual structure of the building's interior and exterior surfaces are analyzed to extract the thermal properties of the materials.

[0009] The size of the building is determined based on the internal and external structural models. The temperature field distribution calculation area is selected according to the size of the building. The external wind environment and external solar environment of the building are determined based on the structural environmental factors of the building.

[0010] Based on the preset calculation accuracy requirements, the thermal properties of the material, the temperature field distribution calculation area, and the external wind and solar environments are used to perform iterative calculations of the temperature field to obtain the indoor and outdoor temperature field distribution patterns of the statically indeterminate space structure.

[0011] Based on the distribution law of indoor and outdoor temperature fields, the external temperature field of the statically indeterminate space structure is divided into zones, and the representative temperature value of each zone is calculated.

[0012] The temperature effect value of the statically indeterminate spatial structure was calculated using the representative temperature values ​​of the zones and the closing temperature value of the building.

[0013] Furthermore, based on the actual structure of the building's interior and exterior surfaces, the internal and external structural models of the statically indeterminate spatial structure are established respectively, specifically including:

[0014] Based on the actual internal and external structural conditions of the building, three-dimensional structural models of the internal structure and the external structure of the building were established in finite element software.

[0015] The three-dimensional structural model is imported into Phoenics software, and the model position is adjusted according to the actual structural positions inside and outside the building to generate the internal and external structural models of the statically indeterminate spatial structure; the internal structural model is represented by I, and the external structural model is represented by E.

[0016] Furthermore, the property analysis of the materials used in the actual structure of the building's interior and exterior surfaces, and the extraction of the materials' thermal properties, specifically includes:

[0017] Obtain information on the actual materials used in the structure of the building's interior and exterior surfaces;

[0018] Physical property analysis was performed on the material types used in the actual structure of the building's interior and exterior surfaces, and thermal properties that affect the temperature field of the structural surfaces of the building's interior and exterior surfaces were extracted.

[0019] Further, the step of determining the building's size based on the internal and external structural models, and selecting the temperature field distribution calculation region according to the building's size, includes:

[0020] The internal and external structural models of the statically indeterminate spatial structure are integrated into a unified model, and the overall model size of the building is determined.

[0021] The overall model is translated to the center of the computational region, and the size of the computational region is a first preset multiple of the size of the overall model.

[0022] The boundary coordinates of the calculation region are determined based on the size of the calculation region, and the calculation region for the temperature field distribution is selected based on the boundary coordinates;

[0023] The temperature field distribution calculation region is divided into multiple grid cells.

[0024] Furthermore, based on preset calculation accuracy requirements, the temperature field is iteratively calculated using the thermal properties of the material, the temperature field distribution calculation area, and the external wind and solar environments to obtain the indoor and outdoor temperature field distribution patterns of the statically indeterminate space structure. Specifically, this includes:

[0025] Based on the preset calculation accuracy requirements, determine the number of iterations N. i and error limit E r And the number of iterations N i and error limit E r Configure the parameters in the Phoenics software's parameter file;

[0026] The thermal properties of the material, the temperature field distribution calculation area, and the external wind and solar environments are imported into Phoenics software, and the process is performed according to the number of iterations N. i and error limit E r Temperature field iterative calculations were performed to obtain the indoor and outdoor temperature field distribution and distribution law of the statically indeterminate space structure.

[0027] Furthermore, the step of dividing the external temperature field of the statically indeterminate space structure into zones based on the indoor and outdoor temperature field distribution patterns, and calculating the representative temperature value of each zone, includes:

[0028] Based on the indoor and outdoor temperature field distribution patterns, the external temperature field of the statically indeterminate space structure is divided into N temperature zones. For the i-th temperature zone, if there are M temperature values ​​within the i-th temperature zone, then the zone representative temperature value T for the i-th temperature zone is... i The calculation process can be represented as follows:

[0029]

[0030] In the formula, T m Let A be the magnitude of the m-th temperature value within the i-th partition. m Let m be the area of ​​the distribution range of the m-th temperature value within this partition.

[0031] Furthermore, the calculation of the temperature effect value of the statically indeterminate spatial structure using the representative values ​​of the zoned temperature and the closing temperature value of the building includes:

[0032] Obtain the closure temperature T0 of the overall building structure, and calculate the temperature effect value ΔT for the i-th temperature zone. i , represented as:

[0033] ΔT i =T i -T0

[0034] In the formula, T i T1 represents the temperature value of the i-th temperature zone; T0 is the structural closure temperature.

[0035] The application employs the above technical solution and has at least the following beneficial effects:

[0036] The method for determining the temperature effect on statically indeterminate spatial structures based on indoor-outdoor temperature difference, provided in this application, analyzes the actual structure of the building's interior and exterior surfaces to establish internal and external structural models of the statically indeterminate spatial structure. Then, it extracts the thermal properties of the materials used in the structure, the calculation area of ​​the temperature field distribution, and the external wind and solar environments. Based on preset calculation accuracy requirements, iterative calculations of the temperature field are performed using the material's thermal properties, the calculation area of ​​the temperature field distribution, and the external wind and solar environments. The indoor and outdoor temperature field distribution patterns of the statically indeterminate spatial structure are obtained through numerical simulation analysis. The external temperature field of the statically indeterminate spatial structure is divided into zones based on the indoor and outdoor temperature field distribution patterns, and a representative temperature value for each zone is calculated. Finally, the temperature effect value of each zone of the statically indeterminate spatial structure is calculated by combining the overall structural closure temperature value of the building and the representative temperature values ​​of each zone. This application considers the influence of indoor-outdoor temperature difference on the temperature effect of the statically indeterminate spatial structure, accurately calculating the distribution and magnitude of the temperature effect, and providing an effective theoretical basis for selecting the temperature effect during the design stage of statically indeterminate spatial structures.

[0037] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0039] Figure 1 This is a flowchart illustrating a method for determining the temperature effect of a statically indeterminate space structure based on the indoor-outdoor temperature difference, according to an exemplary embodiment. Detailed Implementation

[0040] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of methods consistent with some aspects of this application as detailed in the appended claims.

[0041] Figure 1 This invention provides a method for determining the temperature effect of a statically indeterminate space structure based on the indoor-outdoor temperature difference. The method includes the following steps:

[0042] S1: Based on the actual structure of the building's interior and exterior surfaces, establish the internal and external structural models of the statically indeterminate spatial structure, respectively.

[0043] S2: Perform property analysis on the actual materials used in the internal and external structures of the building to extract the thermal properties of the materials;

[0044] S3: Determine the building's size based on the internal and external structural models, select the temperature field distribution calculation area based on the building's size, and determine the building's external wind and solar environments based on the structural environmental factors of the building.

[0045] S4: Based on the preset calculation accuracy requirements, the temperature field is iteratively calculated using the thermal properties of the material, the temperature field distribution calculation area, and the external wind and solar environments to obtain the indoor and outdoor temperature field distribution law of the statically indeterminate space structure.

[0046] S5: Based on the distribution law of indoor and outdoor temperature fields, the external temperature field of the statically indeterminate space structure is divided into zones, and the representative temperature value of each zone is calculated.

[0047] S6: Calculate the temperature effect value of the statically indeterminate spatial structure using the representative temperature values ​​of the zones and the closing temperature value of the building.

[0048] This application, based on the environmental conditions of the statically indeterminate spatial structure, obtains the indoor and outdoor temperature field distribution of the structure under natural ventilation conditions through numerical simulation analysis. Considering the effect of indoor and outdoor temperature differences during the design phase, the application uses numerical simulation software to analyze the indoor and outdoor temperature field distribution patterns of the structure under natural ventilation conditions. It proposes a method for obtaining the temperature field of the statically indeterminate spatial structure considering indoor and outdoor temperature differences. The indoor and outdoor temperature fields are divided into zones, and representative temperature values ​​for each zone are calculated. The difference between these values ​​and the final structural temperature is used to obtain the temperature distribution and magnitude of each zone, thus proposing a method for determining the temperature effect considering indoor and outdoor temperature differences.

[0049] Among them, statically indeterminate spatial structures are specifically statically indeterminate structures. A statically indeterminate structure refers to a geometrically invariant system with redundant constraints, also known as a statically indeterminate structure. Redundant constraints are constraints added to a statically determinate structure. Each redundant constraint introduces a redundant unknown generalized force, causing the total number of generalized forces to exceed the total number of independent equilibrium equations that can be formulated. The excess number is called the static indeterminacy degree or static indeterminacy order of the structure.

[0050] Furthermore, in this embodiment, based on the actual structure of the building's interior and exterior surfaces, internal and external structural models of the statically indeterminate spatial structure are established, specifically including:

[0051] Based on the actual internal and external structural conditions of the building, three-dimensional structural models of the internal structure and the external structure of the building were established in finite element software.

[0052] The 3D structural model is imported into Phoenics software. The model position is adjusted according to the actual structural positions inside and outside the building to make it conform to the actual structural positions, generating the internal and external structural models of the statically indeterminate spatial structure. The internal structural model is represented by I, and the external structural model is represented by E.

[0053] Further, step S2 is performed to analyze the properties of the materials used in the actual structure of the building's interior and exterior surfaces, extracting the thermal properties of the materials, specifically including:

[0054] Obtain information on the actual materials used in the structure of the building's interior and exterior surfaces;

[0055] Physical property analysis was performed on the material types used in the actual structure of the building's interior and exterior surfaces, and thermal properties that affect the temperature field of the structural surfaces of the building's interior and exterior surfaces were extracted.

[0056] Taking the external model as an example, if there are M material types in the external model, for the m-th material type, its physical properties need to be set, such as the heat transfer coefficient h. m Specific heat c m Thermal conductivity k m These parameters can be obtained by consulting relevant resources. The comprehensive material properties can be expressed as θ. m =(h m ,c m ,k m ), at this time θ m This can be used as a boundary condition for the temperature field distribution on the structural surface.

[0057] Heat transfer coefficient h m The effect on the temperature field of the structural surface can be expressed as:

[0058] q = -h m ΔT

[0059] In the formula, q is the heat flow rate transferred per unit area per unit time; ΔT is the temperature difference between the two sides.

[0060] It can be seen that the heat transfer coefficient h m The larger the value, the greater the corresponding q value, and thus the magnitude of the temperature field on the surface of the structure will also be affected.

[0061] Specific heat c m and thermal conductivity k m The effect on the temperature field of the structural surface can be expressed as:

[0062]

[0063] In the formula, T represents the temperature field distribution, t represents time, and ρ represents temperature. m For density, This indicates differentiation. It can be seen that the specific heat c... m A larger value means more heat is needed to raise the temperature per unit mass, thus affecting the magnitude of the temperature field on the structural surface and the thermal conductivity k. m The larger the value, the greater the heat transferred per unit area per unit time, and thus the magnitude of the temperature field on the surface of the structure will also be affected.

[0064] Further, step S3 is performed, determining the building's size based on the internal and external structural models, and selecting the temperature field distribution calculation region according to the building's size, including:

[0065] First, the internal and external structural models of the statically indeterminate spatial structure are integrated into a unified model, and the overall model size of the building is determined.

[0066] The overall model is translated to the center of the computational region, and the size of the computational region is a first preset multiple of the size of the overall model.

[0067] The boundary coordinates of the calculation region are determined based on the size of the calculation region, and the calculation region for the temperature field distribution is selected based on the boundary coordinates;

[0068] The temperature field distribution calculation region is divided into multiple grid cells.

[0069] Specifically, the size of the computational domain needs to be set based on the physical problem being simulated and the numerical method used. Generally, the computational domain is larger than the model by a certain margin; this margin is called the computational domain or boundary layer. For three-dimensional spatial structures, the size of the computational domain can be expressed as:

[0070] C a =[xyz]

[0071] In the formula, C a Let x be the boundary coordinate in the x-direction, y be the boundary coordinate in the y-direction, and z be the boundary coordinate in the z-direction. In this process, the handling of boundary conditions is crucial, as they determine the accuracy and stability of the numerical solution. To ensure the accuracy and reliability of the calculation results, a computational domain of a certain width is generally set around the model to account for the influence of the flow field. The specific size of the computational domain should be selected based on the specific physical problem and numerical method, while also considering the surrounding environment, such as whether there is any obstruction or whether surrounding buildings affect solar radiation. In this application, 3 to 5 times the size of the structural model is selected as the computational domain size. x, y, and z can be expressed as:

[0072] x = 3d1 ~ 5d1

[0073] y = 3d² ~ 5d²

[0074] z = 3d³~5d³

[0075] In the formula, d1 represents the size of the overall structure in the x-direction; d2 represents the size of the overall structure in the y-direction; and d3 represents the size of the overall structure in the z-direction. To obtain accurate results, the physical model needs to be translated to the center of the computational domain while selecting its size. This process is called "mesh translation" or "model centering".

[0076] Placing the physical structural model of the building (i.e., the overall model) at the center of the computational domain achieves several objectives: First, it ensures the computational domain is large enough to encompass the entire flow field and the model's influence range; second, it maintains a uniform mesh distribution within the computational domain, avoiding the impact of mesh inhomogeneity on the calculation results; and finally, it prevents changes in the flow near the object's surface from unnecessarily affecting the calculation results. When performing mesh translation, attention must be paid to adjusting the position of the physical model and the computational domain, and resetting boundary conditions and the computational mesh to ensure the accuracy of the calculation results. Translating the physical model to the center of the computational domain is a routine operation in fluid dynamics simulations, which can improve the accuracy and stability of the calculation results.

[0077] The next step is to mesh the computational domain, a crucial step in fluid dynamics simulations. Dividing the flow field into many small grid cells accelerates computation and improves accuracy. Different physical phenomena require different meshing methods, so the choice must be made based on specific circumstances. Mesh generation also facilitates the management of flow field data and subsequent analysis and processing. In practical applications, mesh generation should be tailored to specific situations to achieve optimal computational efficiency and accuracy. In short, mesh generation is a vital step in fluid dynamics simulations, playing a crucial role in obtaining accurate calculation results. The mesh generation can be adjusted based on the actual size of the structure, computational accuracy, and computation time. The number of mesh elements can be expressed as:

[0078] G rid =[gxgygz]

[0079] In the formula, G rid gx is the number of grid cells; gx is the number of grid cells in the x-direction; gy is the number of grid cells in the y-direction; gz is the number of grid cells in the z-direction.

[0080] Furthermore, in this embodiment, the external wind environment and solar environment of the building are determined based on the structural environmental factors of the building, including: obtaining the external wind environment and external solar environment of the building based on meteorological data or software databases. Specifically, the wind environment includes wind direction, ambient wind speed, and ambient temperature. The solar environment includes the latitude of the building's location, solar radiation intensity, and duration of sunshine.

[0081] Specifically, ambient temperature, wind speed, and solar radiation intensity are important factors affecting the indoor and outdoor temperature field distribution of a structure. When calculating the actual response of the structure over a period of time, these parameters need to be set in real time, and the indoor and outdoor temperature field distribution of the structure needs to be calculated and analyzed for a total of P time periods. The calculation of the indoor and outdoor temperature field distribution of the structure involves multiple variables, where the environmental factors of the structure in the p-th time period can be represented as a vector [T]. a,p v a,p S p ], where T a,p Indicates ambient temperature, v a,p Indicates ambient wind speed, S p Solar radiation intensity, ambient temperature, and ambient wind speed can be obtained from meteorological data. Solar radiation intensity can be derived from meteorological data or software databases. The environmental factors across all time periods can form an external environmental factor matrix A, which can be represented as:

[0082]

[0083] For ambient temperature T a,pThe temperature distribution T(x,y,z,p) of the structure is affected by it, which can be expressed as:

[0084]

[0085] In the formula, α A H is the thermal conductivity coefficient of air; c ρ is the heat transfer coefficient; ρ is the material density; c is the specific heat of the material. It is a heat source per unit volume.

[0086] For the ambient wind speed v a,p The temperature distribution T(x,y,z,p) of the structure is affected by it, which can be expressed as:

[0087]

[0088] In the formula, h c h is the convective heat transfer coefficient of the structural surface. r T is the surface radiation heat transfer coefficient of the structure; 4 Contributes to surface radiation of the structure; It contributes to environmental radiation.

[0089] For solar radiation intensity S p The temperature distribution T(x,y,z,p) of the structure is affected by it, which can be expressed as:

[0090]

[0091] In the formula, G(x,y,z,p) is the weighting function of solar radiation on the local heat dissipation of the structure.

[0092] Further, step S4 is executed, and based on the preset calculation accuracy requirements, iterative calculations of the temperature field are performed using the thermal properties of the material, the temperature field distribution calculation area, and the external wind and solar environments to obtain the indoor and outdoor temperature field distribution patterns of the statically indeterminate space structure. Specifically, this includes:

[0093] Based on the preset calculation accuracy requirements, determine the number of iterations N. i and error limit E r And the number of iterations N i and error limit E r Configure the parameters in the Phoenics software's parameter file;

[0094] The thermal properties of the material, the temperature field distribution calculation area, and the external wind and solar environments are imported into the Phoenics software, and the process is performed according to the number of iterations N. i and error limit E r Temperature field iterative calculations were performed to obtain the indoor and outdoor temperature field distribution and distribution law of the statically indeterminate space structure.

[0095] When using Phoenics for calculations, it is necessary to calculate the number of iterations N. i and error limit E r Configure the settings. The number of iterations represents the number of loops in the calculation, and it generally needs to be set according to the complexity of the computation. If the number of iterations is set too small, accurate calculation results may not be obtained, while setting it too large will increase the computation time and resources. In Phoenics, the number of iterations can be set by modifying the iteration number parameter in the parameter file. Generally, it needs to be set according to the size and complexity of the model, and the number of iterations is usually set between 1000 and 5000. The error generally needs to be controlled within a certain range to ensure the accuracy of the calculation results. In Phoenics, the convergence criterion parameter can be set by modifying the convergence criterion parameter in the parameter file. Generally, it needs to be set according to the size and complexity of the model, with an error limit E. r The value is typically set between 0.001 and 0.0001. After setting the number of iterations N... i and error limit E r Then, the indoor and outdoor temperature field distribution is calculated according to the temperature distribution formula of the above structure. By analyzing the indoor and outdoor temperature field distribution, the distribution law of the indoor and outdoor temperature field can be obtained.

[0096] Further, step S5 is executed, dividing the external temperature field of the statically indeterminate space structure into zones based on the indoor and outdoor temperature field distribution patterns, and calculating the representative temperature value for each zone, including:

[0097] Based on the indoor and outdoor temperature field distribution patterns, the external temperature field of the statically indeterminate space structure is divided into N temperature zones. For the i-th temperature zone, if there are M temperature values ​​within the i-th temperature zone, then the zone representative temperature value T for the i-th temperature zone is... i The calculation process can be represented as follows:

[0098]

[0099] In the formula, T m Let A be the magnitude of the m-th temperature value within the i-th partition. m Let m be the area of ​​the distribution range of the m-th temperature value within this partition.

[0100] Further, step S6 is executed, using the representative temperature values ​​of the zones and the closing temperature value of the building to calculate the temperature effect value of the statically indeterminate spatial structure, including:

[0101] Obtain the closure temperature T0 of the overall building structure, and calculate the temperature effect value ΔT for the i-th temperature zone. i , represented as:

[0102] ΔTi =T i -T0

[0103] In the formula, T i T1 represents the temperature value of the i-th temperature zone; T0 is the structural closure temperature.

[0104] Therefore, the temperature effect values ​​of each temperature zone can be calculated, and a method for determining the temperature effect values ​​considering the indoor-outdoor temperature difference can be derived.

[0105] The structural closing temperature T0 is preset.

[0106] This application considers the influence of indoor and outdoor temperature difference on the temperature effect of statically indeterminate space structures, and can accurately calculate the temperature effect distribution and magnitude of the structure, providing an effective theoretical basis for the selection of temperature effect in the design stage of statically indeterminate space structures.

[0107] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0108] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A method for determining the temperature effect of a statically indeterminate space structure based on the indoor-outdoor temperature difference, characterized in that, include: Based on the actual structure of the building's interior and exterior surfaces, internal and external structural models of the statically indeterminate spatial structure are established respectively. The properties of the materials used in the actual structure of the building's interior and exterior surfaces are analyzed to extract the thermal properties of the materials. The size of the building is determined based on the internal and external structural models. The temperature field distribution calculation area is selected according to the size of the building. The external wind environment and external solar environment of the building are determined based on the structural environmental factors of the building. Based on the preset calculation accuracy requirements, the thermal properties of the material, the temperature field distribution calculation area, and the external wind and solar environments are used to perform iterative calculations of the temperature field to obtain the indoor and outdoor temperature field distribution patterns of the statically indeterminate space structure. Based on the distribution law of indoor and outdoor temperature fields, the external temperature field of the statically indeterminate space structure is divided into zones, and the representative temperature value of each zone is calculated. The temperature effect values ​​of each zone of the statically indeterminate spatial structure are calculated using the representative temperature values ​​of the zones and the closing temperature values ​​of the building.

2. The method for determining the temperature effect on a statically indeterminate space structure according to claim 1, characterized in that, Based on the actual structure of the building's interior and exterior surfaces, internal and external structural models of the statically indeterminate spatial structure are established, specifically including: Based on the actual internal and external structural conditions of the building, three-dimensional structural models of the internal structure and the external structure of the building were established in finite element software. The three-dimensional structural model is imported into Phoenics software, and the model position is adjusted according to the actual structural positions inside and outside the building to generate the internal and external structural models of the statically indeterminate spatial structure; the internal structural model is represented by I, and the external structural model is represented by E.

3. The method for determining the temperature effect on a statically indeterminate space structure according to claim 1, characterized in that, The aforementioned property analysis of the materials used in the actual structure of the building's interior and exterior surfaces, extracting the thermal properties of the materials, specifically includes: Obtain information on the actual materials used in the structure of the building's interior and exterior surfaces; Physical property analysis was performed on the material types used in the actual structure of the building's interior and exterior surfaces, and thermal properties that affect the temperature field of the structural surfaces of the building's interior and exterior surfaces were extracted.

4. The method for determining the temperature effect on a statically indeterminate space structure according to claim 1, characterized in that, The process of determining the building's size based on the internal and external structural models, and selecting the temperature field distribution calculation region according to the building's size, includes: The internal and external structural models of the statically indeterminate spatial structure are integrated into a unified model, and the overall model size of the building is determined. The overall model is translated to the center of the computational region, and the size of the computational region is a first preset multiple of the size of the overall model. The boundary coordinates of the calculation region are determined based on the size of the calculation region, and the calculation region for the temperature field distribution is selected based on the boundary coordinates; The temperature field distribution calculation region is divided into multiple grid cells.

5. The method for determining the temperature effect on a statically indeterminate space structure according to claim 1, characterized in that, Based on preset calculation accuracy requirements, the process involves iterative temperature field calculations using the material's thermal properties, temperature field distribution calculation area, and external wind and solar environments to obtain the indoor and outdoor temperature field distribution patterns of the statically indeterminate space structure. Specifically, this includes: Determine the number of iterations based on the preset calculation accuracy requirements. and error limit and the number of iterations and error limit Configure the parameters in the Phoenics software's parameter file; The thermal properties of the material, the temperature field distribution calculation area, and the external wind and solar environments were imported into Phoenics software, and the data were processed according to the number of iterations. and error limit Temperature field iterative calculations were performed to obtain the indoor and outdoor temperature field distribution and distribution law of the statically indeterminate space structure.

6. The method for determining the temperature effect on a statically indeterminate space structure according to claim 1, characterized in that, The process involves dividing the external temperature field of the statically indeterminate space structure into zones based on the distribution patterns of indoor and outdoor temperature fields, and calculating the representative temperature value for each zone, including: Based on the indoor and outdoor temperature field distribution patterns, the external temperature field of the statically indeterminate space structure is divided into N temperature zones; among them, for the first... The temperature zone, if the first... Within each temperature zone, there are For a certain temperature value, then the first... Each temperature zone represents a temperature value. The calculation process is expressed as follows: In the formula, For the first i Within the first partition The size of the temperature value, For the first in this partition The area covered by the distribution of various temperature values.

7. The method for determining the temperature effect on a statically indeterminate space structure according to claim 1, characterized in that, The calculation of the temperature effect values ​​of each zone of the statically indeterminate spatial structure using representative zone temperature values ​​and the building's closure temperature value includes: Obtain the closure temperature value of the building's overall structure. Based on the closing temperature value The temperature effect value for each zone is calculated based on the representative temperature value for each zone; among them, for the first zone... Each temperature zone is used to calculate the temperature effect value. , represented as: In the formula, For the first i The representative temperature values ​​for each temperature zone; This refers to the temperature at which the structure closes.

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