Concrete tower shape parameter simulation method and system based on simulation model

Abstract

The invention relates to the technical field of concrete pole tower simulation, and in particular to a method and system for simulating tower shape parameters of a concrete pole tower based on a simulation model; the method comprises obtaining an applicable area of ​​a concrete pole tower, and preliminarily designing a geometric model of the concrete pole tower according to the applicable area; defining the mechanical properties of a concrete material and associating it with the concrete pole tower; meshing the geometric model using a finite element simulation model, and selecting certain grid units to perform simulation analysis on the concrete pole tower; obtaining historical climate information in the applicable area, and establishing a coupling model of the influence of different climate information on the concrete pole tower, and importing the coupling model into the finite element simulation model to perform multi-physical field coupling simulation; identifying weak grid units of the concrete pole tower according to the simulation results of the coupling model, and performing reinforcement design on the weak grid units; and by comprehensively considering the mechanical properties of the concrete pole tower and the influence of various environmental factors, the concrete pole tower can be designed and simulated more accurately.

Description

Technical Field

[0001] The invention relates to the technical field of concrete pole tower simulation, and in particular to a method and system for simulating tower shape parameters of a concrete pole tower based on a simulation model. Background Art

[0002] With the development of the communications industry, especially in remote rural areas, universal services, highways, railway tunnels and other scenarios, more durable and low-maintenance communications infrastructure is needed; although traditional steel tower masts are widely used, they have certain limitations in certain environments:

[0003] Easy to rust: Steel is easily affected by the environment during long-term use, especially in corrosive environments such as seaside and industrial areas. Steel tower masts will rust, affecting structural safety;

[0004] Deformation and frequent maintenance: Steel tower masts may be deformed due to external force or deadweight during use, affecting the stability of the tower body, and the maintenance cost and frequency are high;

[0005] High and unstable costs: Steel is greatly affected by market price fluctuations, which makes the construction cost of steel tower masts difficult to control and the material cost is high;

[0006] As for concrete towers, since concrete towers are usually prefabricated, they will face different environmental pressures when installed in different regions, such as high wind pressure areas and earthquake-prone areas; these areas have higher requirements on the structural strength and seismic resistance of the towers, and different regions have different requirements on various performances of concrete towers; if calculated by manpower, it will be a huge challenge for the workload of engineers. For this reason, the present invention proposes a simulation method and system for tower shape parameters of concrete towers based on a simulation model. Summary of the invention

[0007] In view of the technical problems existing in the prior art, the present invention provides a method and system for simulating the tower shape parameters of a concrete tower based on a simulation model. Through the simulation model, the optimal tower shape parameters under different environments can be determined, and these parameters can be standardized to form industry standards; this will help to promote the application of concrete towers on a large scale and ensure that towers in different application scenarios can meet performance requirements.

[0008] The technical solution of the present invention to solve the above technical problems is as follows: a simulation method and system for tower shape parameters of a concrete tower based on a simulation model;

[0009] In a first aspect, a method for simulating tower shape parameters of a concrete tower based on a simulation model comprises the following steps:

[0010] S1: Obtain the applicable area of ​​the concrete tower and preliminarily design the geometric model of the concrete tower according to the applicable area;

[0011] S2: Define the mechanical properties of concrete materials and relate them to concrete towers;

[0012] S3: Use the finite element simulation model to mesh the geometric model and select certain mesh units to perform simulation analysis on it;

[0013] S4: Obtain historical climate information in the applicable area, establish a coupling model of the impact of different climate information on concrete towers, and import the coupling model into the finite element simulation model for multi-physics field coupling simulation;

[0014] S5: Based on the simulation results of the coupled model, the weak grid elements of the concrete tower are identified and reinforced;

[0015] Included in S4:

[0016] Collect local historical climate data, including temperature, humidity, precipitation, wind speed, number of freeze-thaw cycles, and solar radiation intensity;

[0017] Analyze the effect of temperature on thermal expansion and contraction of concrete and the resulting thermal stress;

[0018] Analyze the penetration, carbonation rate, and corrosion rate of concrete by humidity and precipitation;

[0019] Analyze the effect of wind speed on the lateral load of the tower and conduct modeling in combination with wind load standards;

[0020] For cold regions, the effects of freeze-thaw cycles on internal damage, crack formation and structural deterioration of concrete are analyzed.

[0021] Furthermore, the step of obtaining the applicable area of ​​the concrete tower and preliminarily designing the geometric model of the concrete tower according to the applicable area includes:

[0022] Determine the installation area and use environment of the concrete tower through on-site investigation and environmental analysis;

[0023] Select the tower structure and geometric dimensions based on environmental factors and engineering requirements;

[0024] Considering load distribution, material properties and design specifications, a preliminary concrete tower geometry model is generated and the size is optimized to ensure it meets the design requirements.

[0025] Furthermore, the step of meshing the geometric model using the finite element simulation model and selecting certain mesh units to perform simulation analysis on them includes:

[0026] Refine the geometric model to ensure that the meshing accuracy can reflect the key details of the tower structure;

[0027] For different parts of the tower, a variety of grid unit types are used for local refinement;

[0028] Set boundary conditions and loading conditions to ensure that the simulation model can accurately simulate the stress and deformation in the actual engineering environment;

[0029] Finite element analysis software is used to perform mechanical simulation on the meshed geometric model and analyze the stress distribution of the tower based on its own weight load.

[0030] Furthermore, the calculation formula for stress distribution analysis is:

[0031] ;

[0032] in, is the stress on the cross section, is the bending moment, is the distance to the neutral axis, is the section moment of inertia, is the axial force, is the cross-sectional area.

[0033] Furthermore, the influence of each factor in the coupling model on the concrete tower is clarified, and a separate physical model is established for each factor, including:

[0034] Temperature model: Consider the thermal expansion stress caused by temperature changes;

[0035] ;

[0036] For thermal stress, is the elastic modulus, is the coefficient of thermal expansion, for temperature changes;

[0037] Humidity model: considers the effect of humidity on moisture migration and carbonization inside concrete;

[0038] ;

[0039] For in time In concrete The moisture distribution of the point, is the diffusion coefficient;

[0040] Wind load model: by simulating the effect of wind load on the lateral stress of the tower at different wind speeds;

[0041] ;

[0042] It's wind pressure. is the air density, is the drag coefficient, is the wind speed;

[0043] Freeze-thaw cycle effect model: mechanical model based on concrete freeze-thaw damage and damage accumulation equation;

[0044] ;

[0045] in is the freeze-thaw loss, is the number of cycles, is the number of cycles before failure.

[0046] Furthermore, the models of various factors are coupled and related through common stress changes, including:

[0047] Temperature and humidity coupling: Temperature changes affect the moisture migration of concrete, and humidity changes affect the distribution of temperature stress. The humidity model is extended to consider humidity migration under the influence of temperature;

[0048] ;

[0049] is the diffusion coefficient that takes into account the influence of temperature; humidity causes concrete to shrink or expand, and this deformation will work together with other loads to produce additional stress ;

[0050] Wind load and temperature coupling: The thermal stress caused by temperature changes is superimposed on the structural stress caused by wind loads, jointly affecting the stress distribution of concrete towers ;

[0051] ;

[0052] is the stress caused by wind load;

[0053] Temperature, humidity and freeze-thaw coupling: Temperature and humidity affect the damage accumulation rate of freeze-thaw cycles on concrete, and a damage model considering the influence of multiple factors;

[0054] ;

[0055] To consider the number of freeze-thaw failure cycles of temperature and humidity, freeze-thaw damage leads to material degradation, which is manifested as reduced strength and elastic modulus. It changes linearly with freeze-thaw damage;

[0056] Coupled stress fields It is composed of the superposition of individual stress fields:

[0057] .

[0058] Furthermore, the steps of identifying weak grid units of the concrete tower according to the simulation results of the coupling model and performing reinforcement design on the weak grid units include:

[0059] Through finite element analysis, the deformation of each part of the concrete tower under the coupled stress field is calculated to obtain the displacement field, which is compared with the design displacement field of each part in a certain design life. If it is less than, the design of the part is qualified, otherwise, the design of the part is unqualified.

[0060] In a second aspect, a concrete tower shape parameter simulation system based on a simulation model is provided, which is applied to the concrete tower shape parameter simulation method based on a simulation model, and the system comprises:

[0061] Acquisition unit: acquire the applicable area of ​​the concrete tower and preliminarily design the geometric model of the concrete tower according to the applicable area;

[0062] Define elements: define the mechanical properties of concrete materials and associate them with concrete towers;

[0063] Geometric model simulation unit: Use the finite element simulation model to mesh the geometric model, and select certain mesh units to perform simulation analysis on it;

[0064] Climate factor simulation unit: obtain historical climate information in the applicable area, establish a coupling model of the impact of different climate information on concrete towers, and import the coupling model into the finite element simulation model for multi-physics field coupling simulation;

[0065] Result output unit: According to the simulation results of the coupled model, the weak grid elements of the concrete tower are identified and reinforced.

[0066] The beneficial effects of the present invention are:

[0067] This method can more accurately design and simulate the tower parameters of concrete towers by comprehensively considering the mechanical properties of concrete materials, the optimal design of geometric models, and the influence of various environmental factors such as climate, temperature, humidity, etc. This accuracy makes the designed tower shape more adaptable to the actual use environment and improves the safety and stability of the structure.

[0068] By introducing multi-physics field coupling simulation technology, this method can effectively simulate the comprehensive impact of various environmental factors such as temperature, humidity, wind load, freeze-thaw cycle, etc. on concrete towers. This coupling analysis can identify the weak points of the structure under various physical effects, thereby providing a basis for reinforcement design and enhancing the durability of the structure;

[0069] This method uses fine grid division in the finite element simulation process and selects appropriate grid unit types based on the complexity of different parts; this can optimize the use of computing resources and improve simulation efficiency while ensuring calculation accuracy; compared with traditional methods, this technology can better capture stress concentration areas in the structure, ensure the accuracy of simulation results, and reduce the process of manual calculation, so that concrete towers can also achieve the purpose of mass production in different environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Figure 1 It is a flow chart of a method for simulating shape parameters of a concrete tower based on a simulation model according to the present invention;

[0071] Figure 2 It is a schematic diagram of a concrete tower shape parameter simulation system based on a simulation model of the present invention. DETAILED DESCRIPTION

[0072] 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, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0073] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0074] In the description of the present application, the term "for example" is used to mean "used as an example, illustration or description". Any embodiment described as "for example" in the present application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is given to enable any technician in the field to implement and use the present invention. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid unnecessary details to obscure the description of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0075] like Figure 1As shown, in one embodiment, a method for simulating tower shape parameters of a concrete tower based on a simulation model includes the following steps:

[0076] S1: Obtain the applicable area of ​​the concrete tower and preliminarily design the geometric model of the concrete tower according to the applicable area; Specifically: The determination of the applicable area includes evaluating the geographical location, climate conditions, terrain characteristics, etc. Different regions may face different challenges. For example, areas with high wind speeds need to focus on wind loads, while earthquake-prone areas need to consider seismic design; Based on regional characteristics, design the geometric shape of the concrete tower that is suitable for the area, including the height, bottom width, cross-sectional shape, etc. of the tower.

[0077] S2: Define the mechanical properties of concrete materials and associate them with concrete poles and towers; Specifically: Determine the specific performance parameters of concrete including elastic modulus, compressive strength, Poisson's ratio, thermal expansion coefficient, etc. The selected material properties must be able to reflect the characteristics of the actual materials used to ensure the accuracy of the simulation results. In the simulation model, each part of the geometric model needs to be associated with the corresponding material properties, so that in the subsequent simulation, the stress, strain, etc. of each part will accurately reflect the mechanical performance of the actual material.

[0078] S3: Use the finite element simulation model to mesh the geometric model and select certain mesh units for simulation analysis. Specifically: The finite element method is a numerical technique that can decompose complex structures into many small units (meshes), and the mechanical behavior of each unit can be accurately calculated. Through meshing, complex geometric shapes can be simplified into a set of discrete points, and simulation analysis can be more accurate. The selection and division of meshes are key. A mesh that is too coarse may lead to inaccurate results, while a mesh that is too fine may require more computing resources. Different types and densities of meshes may be required for different geometric details and stress concentration areas.

[0079] S4: Obtain historical climate information in the applicable area, and establish a coupling model of the impact of different climate information on concrete towers, and import the coupling model into the finite element simulation model for multi-physical field coupling simulation; Specifically: Climate conditions will affect the mechanical properties of concrete towers in different ways. For example, temperature changes will cause thermal expansion and contraction of materials, and humidity and precipitation will affect the permeability and carbonation rate of concrete; The coupling model takes into account the combined effects of these factors and conducts a comprehensive analysis of the mechanical behavior of concrete towers; Introduce multiple physical fields (such as thermal stress field, humidity field, wind load, etc.) into the finite element model for comprehensive simulation analysis; This coupling simulation can more accurately predict the performance of concrete towers in actual use.

[0080] S5: Based on the simulation results of the coupling model, identify the weak grid units of the concrete tower and conduct reinforcement design for them. Specifically: Through simulation analysis, designers can identify grid units that may have stress concentration or other mechanical problems under certain conditions. These weak points may be due to imperfect design, uneven material properties or climatic factors; for the identified weak parts, reinforcement design can be carried out, such as adding steel bars, optimizing material ratios or changing structural design, to improve the durability and safety of the overall structure. The purpose of the reinforcement design is to ensure that the concrete tower can maintain structural integrity under extreme conditions.

[0081] In one embodiment, the step of obtaining the applicable area of ​​the concrete tower and preliminarily designing the geometric model of the concrete tower according to the applicable area includes:

[0082] Determine the installation area and use environment of the concrete tower through on-site investigation and environmental analysis;

[0083] Select the tower structure and geometric dimensions based on environmental factors and engineering requirements;

[0084] Considering load distribution, material properties and design specifications, a preliminary concrete tower geometry model is generated and the size is optimized to ensure it meets the design requirements.

[0085] In this embodiment, the designer first needs to visit the installation area and conduct a detailed on-site survey, which includes measuring the terrain, assessing soil conditions, and recording existing infrastructure. This information can help determine the basic design requirements of the tower. For example, in mountainous areas or geologically unstable areas, special attention should be paid to the stability of the foundation, while in urban areas, the design of the tower should also consider the impact of surrounding buildings. Environmental analysis focuses on analyzing the environmental conditions of the installation area, including climate, wind, seismic activity, flood risks, etc. Specific environmental factors such as temperature fluctuations, humidity, precipitation, wind speed, etc., will affect the tower. For example, in high wind speed areas, the tower must have stronger wind resistance; in earthquake-prone areas, the design needs to consider earthquake resistance; based on the previous survey and analysis, the designer will choose a suitable tower structure according to the specific environmental conditions of the area; for example, if the environmental wind is strong, a more streamlined tower structure may be selected to reduce wind resistance; different tower structures (such as circular cross-section, square cross-section, etc.) have different mechanical properties, and these characteristics need to be considered during design to adapt to specific environmental requirements; in addition to environmental factors, the specific needs of the project must also be considered, such as the height, load-bearing capacity, and service life of the tower. These requirements will directly affect the geometric size and shape selection of the tower.

[0086] Load distribution: When designing, it is necessary to consider the various loads that concrete towers bear in actual use, such as deadweight, wind load, snow load, earthquake force, etc. The distribution of these loads has a direct impact on the design of the tower, especially the cross-sectional size and material thickness of the tower. For example, in the case of uneven load distribution, special design is required to strengthen certain parts to prevent structural instability or local damage.

[0087] Material properties: The properties of concrete materials (such as compressive strength, elastic modulus, durability, etc.) directly affect the design of the tower. Different concrete formulas may result in different structural strength and durability. Therefore, the model needs to be adjusted and optimized according to the characteristics of the selected material during design. For example, the use of high-strength concrete can reduce the cross-sectional size and thus reduce the amount of material used, but this requires precise mechanical calculations to ensure safety.

[0088] Design specifications: All designs must also comply with relevant engineering design specifications and standards, which usually have clear requirements for the safety of structural design, material use and construction technology; for example, national or industry standards may stipulate that the minimum safety level of concrete towers is Level 2 and the seismic resistance level is Level C, and these requirements must be met during design.

[0089] In one embodiment, the step of meshing the geometric model using a finite element simulation model and selecting certain mesh units to perform simulation analysis on the model includes:

[0090] Refine the geometric model to ensure that the meshing accuracy can reflect the key details of the tower structure;

[0091] For different parts of the tower, a variety of grid unit types are used for local refinement;

[0092] Set boundary conditions and loading conditions to ensure that the simulation model can accurately simulate the stress and deformation in the actual engineering environment;

[0093] Finite element analysis software is used to perform mechanical simulation on the meshed geometric model and analyze the stress distribution of the tower based on its own weight load.

[0094] The calculation formula for stress distribution analysis is:

[0095] ;

[0096] in, is the stress on the cross section, M is the bending moment, y is the distance to the neutral axis, I is the section moment of inertia, N is the axial force, and A is the cross-sectional area.

[0097] In this embodiment, the basic principle of stress analysis is to use the knowledge of material mechanics and structural mechanics to calculate the stress distribution of the structure under the action of external forces; specifically, the finite element method (FEM) can be used to decompose the complex structure into many small units, and mechanical analysis is performed on each unit, and finally the stress distribution of the entire structure is comprehensively obtained.

[0098] Finite element analysis is used to implement stress analysis of the tower itself under the influence of external conditions. The force analysis of the tower in actual application is different depending on the location. Therefore, the geometric model of the tower needs to be refined and more geometric details added to ensure that the geometric shapes of key parts (such as tower base, tower body, tower top, etc.) can accurately reflect the actual situation. Through fine grid division, key details such as stress concentration areas and deformation behaviors in the structure can be captured; designers need to balance the use of grid density and computing resources according to actual conditions. For example, a higher mesh density can be used in key parts of the tower (such as stress concentration areas), while a lower mesh density can be used in parts with more uniform stress. Different types of mesh units can be selected according to the complexity of the structure and the simulation requirements, such as shell units, solid units, beam units, etc. The use of different types of units can better adapt to the local characteristics of the structure. For example, beam units or solid units are used to simulate the solid structure in the middle area and wind-stressed area of ​​the tower to better simulate the stress conditions in the axial, bending and shear directions. For the connecting parts, shell units are suitable for simulating thin-walled structures, which are used to simulate structures subjected to bending and shear. By analyzing the stress distribution of the tower under its own weight load, designers can identify high-stress areas in the structure, which may require further design optimization or strengthening.

[0099] In one embodiment, the historical climate information in the applicable area is obtained, and a coupling model of the influence of different climate information on the concrete tower is established. The coupling model is imported into the finite element simulation model to perform multi-physics field coupling simulation. The steps include:

[0100] Collect local historical climate data, including temperature, humidity, precipitation, wind speed, number of freeze-thaw cycles, and solar radiation intensity;

[0101] Analyze the effect of temperature on thermal expansion and contraction of concrete and the resulting thermal stress;

[0102] Analyze the penetration, carbonation rate, and corrosion rate of concrete by humidity and precipitation;

[0103] Analyze the effect of wind speed on the lateral load of the tower and conduct modeling in combination with wind load standards;

[0104] For cold regions, the effects of freeze-thaw cycles on internal damage, crack formation and structural deterioration of concrete are analyzed.

[0105] The influence of each factor in the coupling model on the concrete tower is clarified, and a separate physical model is established for each factor, including:

[0106] Temperature model: Consider the thermal expansion stress caused by temperature changes;

[0107] ;

[0108] For thermal stress, is the elastic modulus, is the coefficient of thermal expansion, for temperature changes;

[0109] Humidity model: considers the effect of humidity on moisture migration and carbonization inside concrete;

[0110] ;

[0111] For in time In concrete The moisture distribution of the point, is the diffusion coefficient;

[0112] Wind load model: by simulating the effect of wind load on the lateral stress of the tower at different wind speeds;

[0113] ;

[0114] It's wind pressure. is the air density, is the drag coefficient, is the wind speed;

[0115] Freeze-thaw cycle effect model: mechanical model based on concrete freeze-thaw damage and damage accumulation equation;

[0116] ;

[0117] in is the freeze-thaw loss, is the number of cycles, is the number of cycles before failure.

[0118] Temperature and humidity coupling: Temperature changes affect the moisture migration of concrete, and humidity changes affect the distribution of temperature stress. The humidity model is extended to consider humidity migration under the influence of temperature;

[0119] ;

[0120] is the diffusion coefficient that takes into account the influence of temperature; humidity causes concrete to shrink or expand, and this deformation will work together with other loads to produce additional stress ;

[0121] Wind load and temperature coupling: The thermal stress caused by temperature changes is superimposed on the structural stress caused by wind loads, jointly affecting the stress distribution of concrete towers ;

[0122] ;

[0123] is the stress caused by wind load;

[0124] Temperature, humidity and freeze-thaw coupling: Temperature and humidity affect the damage accumulation rate of freeze-thaw cycles on concrete, and a damage model considering the influence of multiple factors;

[0125] ;

[0126] To consider the number of freeze-thaw failure cycles of temperature and humidity, freeze-thaw damage leads to material degradation, which is manifested as reduced strength and elastic modulus. It changes linearly with freeze-thaw damage;

[0127] Coupled stress fields It is composed of the superposition of individual stress fields:

[0128] .

[0129] In this embodiment, since the service life of the concrete pole tower generally needs to be more than 30 years, outdoor climate change will have an impact on the self-stress performance of the concrete pole tower. The environment in the applicable area is simulated in the simulation model and simulated in a time period. Through multi-physical field coupling simulation, the designer can comprehensively consider the comprehensive impact of various environmental factors such as temperature, humidity, wind speed, freeze-thaw cycle, etc. on the concrete pole tower, and predict whether the pole tower will fail within the design period, thereby realizing the detection of the quality of the pole tower; wherein the coupling model couples the models of various factors and considers the relationship between the various factors, such as the impact of temperature and humidity on the freeze-thaw cycle, or the thermal stress caused by temperature change superimposed on the structural stress caused by wind load; the various factors are associated through common stress changes to form a comprehensive coupling model; the coupling model and the stress analysis of the concrete pole tower are combined to predict the actual stress of the concrete pole tower under different climatic conditions; the service life of the concrete pole tower in a specific climatic environment is evaluated, and whether there is a risk of premature deterioration; according to the actual climatic environment data and the structural stress predicted by the coupling model, the risk of the concrete pole tower failing to reach the preset service life is evaluated.

[0130] Furthermore, the steps of identifying weak grid units of the concrete tower according to the simulation results of the coupling model and performing reinforcement design on the weak grid units include:

[0131] Through finite element analysis, the deformation of each part of the concrete tower under the action of comprehensive stress is calculated to obtain the displacement field X, which is compared with the design displacement field of each part at a certain design life. By comparison, if it is less than, the design of this part is qualified; otherwise, the design of this part is unqualified.

[0132] like Figure 2 As shown, a concrete tower shape parameter simulation system based on a simulation model is provided, which is applied to the concrete tower shape parameter simulation method based on a simulation model, and the system includes:

[0133] Acquisition unit: acquire the applicable area of ​​the concrete tower and preliminarily design the geometric model of the concrete tower according to the applicable area;

[0134] Define elements: define the mechanical properties of concrete materials and associate them with concrete towers;

[0135] Geometric model simulation unit: Use the finite element simulation model to mesh the geometric model, and select certain mesh units to perform simulation analysis on it;

[0136] Climate factor simulation unit: obtain historical climate information in the applicable area, establish a coupling model of the impact of different climate information on concrete towers, and import the coupling model into the finite element simulation model for multi-physics field coupling simulation;

[0137] Result output unit: According to the simulation results of the coupled model, the weak grid elements of the concrete tower are identified and reinforced.

[0138] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0139] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for simulating the shape parameters of a concrete tower based on a simulation model, characterized in that: The following steps are involved: S1: Obtain the applicable area of ​​the concrete tower and preliminarily design the geometric model of the concrete tower according to the applicable area; S2: Define the mechanical properties of concrete materials and relate them to concrete towers; S3: Use the finite element simulation model to mesh the geometric model and select certain mesh units to perform simulation analysis on it; S4: Obtain historical climate information in the applicable area, establish a coupling model of the impact of different climate information on concrete towers, and import the coupling model into the finite element simulation model for multi-physics field coupling simulation; S5: Based on the simulation results of the coupled model, the weak grid elements of the concrete tower are identified and reinforced; Included in S4: Collect local historical climate data, including temperature, humidity, precipitation, wind speed, number of freeze-thaw cycles, and solar radiation intensity; Analyze the effect of temperature on thermal expansion and contraction of concrete and the resulting thermal stress; Analyze the penetration, carbonation rate, and corrosion rate of concrete by humidity and precipitation; Analyze the effect of wind speed on the lateral load of the tower and conduct modeling in combination with wind load standards; For cold regions, the effects of freeze-thaw cycles on internal damage, crack formation and structural deterioration of concrete are analyzed.

2. The method for simulating tower shape parameters of a concrete tower based on a simulation model according to claim 1, characterized in that: The step of obtaining the applicable area of ​​the concrete tower and preliminarily designing the geometric model of the concrete tower according to the applicable area includes: Determine the installation area and use environment of the concrete tower through on-site investigation and environmental analysis; Select the tower structure and geometric dimensions based on environmental factors and engineering requirements; Considering load distribution, material properties and design specifications, a preliminary concrete tower geometry model is generated and the size is optimized to ensure it meets the design requirements.

3. The method for simulating tower shape parameters of a concrete tower based on a simulation model according to claim 1, characterized in that: The steps of meshing the geometric model using the finite element simulation model and selecting certain mesh units to perform simulation analysis on the model include: Refine the geometric model to ensure that the meshing accuracy can reflect the key details of the tower structure; For different parts of the tower, a variety of grid unit types are used for local refinement; Set boundary conditions and loading conditions so that the simulation model can simulate the stress and deformation conditions in the actual engineering environment; Finite element analysis software is used to perform mechanical simulation on the meshed geometric model and analyze the stress distribution of the tower based on its own weight load.

4. The method for simulating tower shape parameters of a concrete tower based on a simulation model according to claim 3, characterized in that: The calculation formula for stress distribution analysis is: ； in, is the stress on the cross section, is the bending moment, is the distance to the neutral axis, is the section moment of inertia, is the axial force, is the cross-sectional area.

5. The method for simulating tower shape parameters of a concrete tower based on a simulation model according to claim 1, characterized in that: The influence of each factor in the coupling model on the concrete tower is clarified, and a separate physical model is established for each factor, including: Temperature model: Consider the thermal expansion stress caused by temperature changes; ； For thermal stress, is the elastic modulus, is the coefficient of thermal expansion, for temperature changes; Humidity model: considers the effect of humidity on moisture migration and carbonization inside concrete; ； For in time In concrete The moisture distribution of the point, is the diffusion coefficient; Wind load model: by simulating the effect of wind load on the lateral stress of the tower at different wind speeds; ； It's wind pressure. is the air density, is the drag coefficient, is the wind speed; Freeze-thaw cycle effect model: mechanical model based on concrete freeze-thaw damage and damage accumulation equation; ； in is the freeze-thaw loss, is the number of cycles, is the number of cycles before failure.

6. The method for simulating tower shape parameters of a concrete tower based on a simulation model according to claim 5, characterized in that: The various factor models are coupled and related through common stress changes, including: Temperature and humidity coupling: Temperature changes affect the moisture migration of concrete, and humidity changes affect the distribution of temperature stress. The humidity model is extended to consider humidity migration under the influence of temperature; ； is the diffusion coefficient that takes into account the influence of temperature; humidity causes concrete to shrink or expand, and this deformation will work together with other loads to produce additional stress ; Wind load and temperature coupling: The thermal stress caused by temperature changes is superimposed on the structural stress caused by wind loads, jointly affecting the stress distribution of concrete towers ; ； is the stress caused by wind load; Temperature, humidity and freeze-thaw coupling: Temperature and humidity affect the damage accumulation rate of freeze-thaw cycles on concrete, and a damage model considering the influence of multiple factors; ； To consider the number of freeze-thaw failure cycles of temperature and humidity, freeze-thaw damage causes material degradation, which is manifested as reduced strength and elastic modulus. It changes linearly with freeze-thaw damage; Coupled stress fields It is composed of the superposition of individual stress fields: 。 7. The method for simulating tower shape parameters of a concrete tower based on a simulation model according to claim 6, characterized in that: The steps of identifying weak grid units of the concrete tower according to the simulation results of the coupling model and strengthening the units include: Through finite element analysis, the deformation of each part of the concrete tower under the coupled stress field is calculated to obtain the displacement field , and the design displacement field of each part at a certain design life By comparison, if it is less than, the design of this part is qualified; otherwise, the design of this part is unqualified.

8. A simulation model-based concrete tower shape parameter simulation system, applied to the simulation model-based concrete tower shape parameter simulation method according to any one of claims 1 to 7, the system comprising: Acquisition unit: acquire the applicable area of ​​the concrete tower and preliminarily design the geometric model of the concrete tower according to the applicable area; Define elements: define the mechanical properties of concrete materials and associate them with concrete towers; Geometric model simulation unit: Use the finite element simulation model to mesh the geometric model, and select certain mesh units to perform simulation analysis on it; Climate factor simulation unit: obtain historical climate information in the applicable area, establish a coupling model of the impact of different climate information on concrete towers, and import the coupling model into the finite element simulation model for multi-physics field coupling simulation; Result output unit: According to the simulation results of the coupled model, the weak grid elements of the concrete tower are identified and reinforced.

Images