Gas film structure optimization generation method and device

Abstract

The invention provides a gas film structure optimization generation method and device, and the method can construct a plurality of groups of film surface structures and corresponding cable net structures after basic parameters are determined, so as to generate a plurality of gas film models through the groups of film surface structures and cable net structures meeting preset conditions, and verify the gas film models. And comparing various parameters of the verified to-be-selected gas film models, and determining the optimal to-be-selected gas film model as the final gas film model. According to the scheme provided by the invention, a plurality of film surface structures and corresponding cable net structures can be constructed on the basis of provided parameters, so that different design requirements and environmental conditions are effectively met, the gas film models meeting the requirements are combined and screened by setting the preset conditions, the models meeting the core requirements can be screened out, and the design efficiency is improved. On the basis, the gas film model with the comprehensive optimal performance indexes is further screened out, the repeated adjustment and trial and error processes in manual design can be avoided, the design efficiency is improved, and errors caused by manual intervention are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of air film structure construction, and in particular relates to an air film structure optimization generation method and device. Background Art

[0002] As a new type of lightweight and efficient facility, air membranes are widely used in sports stadiums, industrial warehouses, exhibition halls, greenhouses and other fields. The air membrane structure is mainly composed of a membrane surface and an external cable net system. During its design process, it is necessary to comprehensively consider factors such as the membrane surface shape, cable net structure, and air membrane stress to ensure its safety, stability and economy.

[0003] At present, the design methods of air membrane structures are mostly based on a single scheme or through manual adjustment of parameters for design optimization. The coordinated form-finding analysis of the cable net and the membrane surface is not fully considered. After actual construction, the shape matching degree of the cable and membrane is deviated. In addition, these methods have limitations such as long design cycle, low efficiency, and easy design deviation. Especially when faced with different environmental conditions and complex design requirements, it is difficult to accurately and quickly obtain ideal results.

[0004] In addition, the air membrane structure designed by traditional methods is difficult to cope with complex and changeable design requirements and external environmental conditions, and the traditional design method lacks efficient optimization and adjustment means. The adjustment not only requires a lot of time and human resources, but also cannot guarantee its accuracy, and it is impossible to judge whether the air membrane model meets the multi-dimensional design requirements as a whole. Summary of the invention

[0005] In order to overcome the defects of the prior art, the present invention proposes a method for optimizing and generating an air film structure, the method comprising:

[0006] In response to the input command, determining basic parameters for constructing the air film structure;

[0007] Based on the basic parameters, several groups of membrane surface structures and cable net structures corresponding to the membrane surface structures are constructed to generate several air film models through the corresponding groups of membrane surface structures and cable net structures that meet the preset conditions;

[0008] Verifying each of the air film models, and determining the air film model that has passed the verification as the air film model to be selected;

[0009] The parameters of the selected air film models are compared to determine the best selected air film model as the final air film model.

[0010] Specifically, a method of constructing a set of membrane surface structures and a cable net structure corresponding to the membrane surface structures based on the basic parameters and judging whether the preset conditions are met includes:

[0011] constructing a membrane surface structure based on the basic parameters, and determining a first air film shape through the membrane surface structure, so as to construct a reference cable net structure based on the first air film shape;

[0012] Determine a second air membrane shape based on the membrane surface structure and the reference cable net structure through form-finding analysis, so as to construct a cable net structure based on the second air membrane shape;

[0013] The difference value between the reference cable net structure after form-finding and the cable net structure is calculated, so that when the difference value is not greater than a preset value, it is determined that the membrane surface structure and the cable net structure meet the preset condition.

[0014] Preferably, the method further comprises:

[0015] If the difference value is greater than a preset value, the membrane surface structure is reconstructed based on the cable net structure, and the step of "determining the first air membrane shape through the membrane surface structure to construct a reference cable net structure based on the first air membrane shape" is performed again.

[0016] Optionally, the “verifying each of the air film models” includes:

[0017] Analyze whether the strength and deformation degree of each air film model under the first working air pressure and its corresponding various load combinations meet the preset strength requirements and preset deformation requirements, and determine that the air film model that meets the preset strength requirements and the preset deformation requirements passes the verification.

[0018] Furthermore, the method further comprises:

[0019] If there is an air membrane model that does not meet the preset strength requirements and / or the preset deformation requirements, adjust the cable net spacing of the reference cable net structure in the air membrane model, adjust the oblique cable net crossing angle of the reference cable net structure, and / or adjust part of the cable net structure in the reference cable net structure, and execute the step of "determining the second air membrane morphology based on the membrane surface structure and the reference cable net structure" again.

[0020] Optionally, the “verifying each of the air film models” includes:

[0021] Analyze whether the shape of each of the air film models under the second working gas pressure meets the spatial dimension requirements for constructing the air film structure, and determine that the air film models that meet the spatial dimension requirements pass the verification.

[0022] Specifically, the basic parameters include an air film model length parameter, an air film model span parameter, and an air film model height parameter. The method further includes:

[0023] If the number of the air film models that pass the verification is less than the preset number, the air film model height parameters in the basic parameters are re-determined, and the step of "constructing several groups of membrane surface structures and cable net structures corresponding to the membrane surface structures based on the basic parameters, so as to generate several air film models through each group of corresponding membrane surface structures and cable net structures that meet the preset conditions" is executed again.

[0024] Preferably, the method further comprises:

[0025] After the final air film model is determined, various loads on the air film model are determined according to the use environment and design requirements to obtain the support reaction value of each support of the air film structure under the most unfavorable load combination, and the embedded parts of each support are designed based on the support reaction value of each support and the cable net structure;

[0026] And / or, after determining the final air membrane model, the cutting model of the air membrane structure is calculated according to the geometric shape of the air membrane model to select the type and production process of the membrane surface material and cable net material, and determine the parameters of each cable line in the cable net structure and the cutting and arrangement method of the membrane surface material and cable net material.

[0027] The present invention also proposes a device for optimizing and generating an air film structure, the device comprising:

[0028] A configuration module, for determining basic parameters for constructing an air film structure in response to an input instruction;

[0029] A generation module, used to construct a plurality of groups of membrane surface structures and cable net structures corresponding to the membrane surface structures based on the basic parameters, so as to generate a plurality of air film models through the corresponding groups of membrane surface structures and cable net structures that meet the preset conditions;

[0030] A verification module, used for verifying each of the air film models, and determining the air film model that has passed the verification as a candidate air film model;

[0031] The screening module is used to compare the parameters of the candidate air film models to determine the best candidate air film model as the final air film model.

[0032] The present invention has at least the following beneficial effects:

[0033] The solution proposed in the present invention can quickly generate multiple air film models by automatically constructing different membrane surface structures and cable net structures, significantly shortening the design cycle and improving design efficiency. The design can be automatically optimized according to preset conditions without repeated manual debugging, thus reducing the manual workload and avoiding the design incompatibility problem caused by environmental changes that may occur in traditional designs. While providing a more practical design solution and ensuring the accuracy and rationality of the design, it can also better cope with complex design requirements and external environmental conditions.

[0034] Furthermore, the scheme proposed in the present invention can optimize the design by repeatedly adjusting the coordination between the membrane surface structure and the cable net structure, thereby ensuring the shape matching degree between the membrane surface structure and the cable net structure, and helping to improve the accuracy and stability of the air membrane structure. The introduction of the difference value judgment mechanism can be evaluated through quantitative standards, thereby more accurately controlling the matching degree between the membrane surface structure and the cable net structure; by verifying whether the strength, deformation and shape of the air membrane model meet the spatial size requirements under a specific working air pressure, the load-bearing and deformation resistance of the structure under load can be ensured, and the requirements of the actual construction and use environment can be met, thereby avoiding the problem of structural unsuitability caused by insufficient space; the cable net structure can also be adjusted when the air membrane model does not meet the strength or deformation requirements, thereby improving the flexibility and adjustability of the design process; the scheme can also ensure that sufficient air membrane models that meet the requirements are finally obtained by optimizing the parameter combination, thereby increasing the diversity and adaptability of the design scheme;

[0035] In addition, this solution can further calculate the support reaction force of each support based on the design of the air film model, and design the embedded parts of the support based on these data to prevent the instability of the support due to improper load in actual use. It can also calculate the appropriate cutting model based on the geometric shape of the air film structure, select the appropriate membrane surface material, cable net material and production process, thereby improving the efficiency of material use, reducing costs, and ensuring the stability and durability of the structure.

[0036] Therefore, the present invention proposes a method and device for optimizing and generating an air membrane structure. The scheme proposed in the present invention can construct multiple membrane surface structures and corresponding cable net structures based on the provided parameters, so as to effectively respond to different design requirements and environmental conditions. By setting preset conditions to combine and screen air membrane models that meet the requirements, it is possible to screen out models that meet the core requirements. On this basis, the air membrane model with the best comprehensive performance indicators is further screened out, which can avoid repeated adjustments and trial and error processes in manual design, improve design efficiency and reduce errors caused by manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 A schematic diagram of a method flow chart of an optimized generation method of an air film structure provided in Example 1;

[0039] Figure 2 The overall flow chart of the method for optimizing the generation of air film structures;

[0040] Figure 3 A schematic diagram of a method for constructing a membrane surface structure and a cable net structure and determining whether preset conditions are met;

[0041] Figure 4 An example diagram for constructing a cable net structure by extending the reference cables;

[0042] Figure 5 This is a schematic diagram of the module structure of the air film structure optimization generation device provided in Example 2.

[0043] Reference numerals

[0044] 10- configuration module; 20- generation module; 21- first construction unit; 22- second construction unit; 23- calculation unit; 24- reconstructing unit; 30- verification module; 40- screening module; 50- design module; 60- selection module. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Hereinafter, various embodiments of the present invention will be described more fully. The present invention may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present invention to the specific embodiments disclosed herein, but the present invention should be understood to cover all adjustments, equivalents and / or alternatives falling within the spirit and scope of the various embodiments of the present invention.

[0047] Hereinafter, the term "include" or "may include" used in various embodiments of the present invention indicates the presence of disclosed functions, operations or elements, and does not limit the addition of one or more functions, operations or elements. In addition, as used in various embodiments of the present invention, the terms "include", "have" and their cognates are intended only to indicate specific features, numbers, steps, operations, elements, components or combinations of the foregoing items, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing items or the possibility of adding one or more features, numbers, steps, operations, elements, components or combinations of the foregoing items.

[0048] In various embodiments of the present invention, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0049] The expressions (such as "first", "second", etc.) used in various embodiments of the present invention may modify the various constituent elements in various embodiments, but may not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used for the purpose of distinguishing an element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of various embodiments of the present invention, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0050] It should be noted that in the present invention, unless otherwise clearly specified and defined, the terms such as "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present invention, those skilled in the art need to understand that the terms indicating orientation or positional relationship herein are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0052] The terms used in various embodiments of the present invention are only used for the purpose of describing specific embodiments and are not intended to limit various embodiments of the present invention. As used herein, the singular form is intended to also include the plural form, unless the context clearly indicates otherwise. Unless otherwise limited, all terms used here (including technical terms and scientific terms) have the same meaning as the meaning generally understood by those of ordinary skill in the art to which the various embodiments of the present invention belong. The terms (such as the terms defined in the dictionary generally used) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning, unless clearly defined in various embodiments of the present invention.

[0053] Example 1

[0054] This embodiment proposes a method for optimizing the generation of an air film structure. Figure 1-Figure 2 , the method comprising:

[0055] S100: In response to an input instruction, determining basic parameters for constructing an air film structure.

[0056] In this embodiment, the basic parameters of the air film model included in the input instruction include a length parameter L of the air film model, a span parameter S of the air film model, and a height parameter H of the air film model;

[0057] Among them, the length parameter L of the air membrane model represents the overall length of the air membrane structure, which is consistent with the functional requirements of the air membrane; the span parameter S of the air membrane model represents the width or span of the air membrane structure, which determines the bearing range of the structure and the spaciousness of the internal space; the height parameter H of the air membrane model represents the height of the air membrane structure, which determines the volume and functionality of the internal space of the air membrane structure.

[0058] S200: constructing a plurality of groups of membrane surface structures and cable net structures corresponding to the membrane surface structures based on basic parameters, so as to generate a plurality of air film models through the groups of corresponding membrane surface structures and cable net structures satisfying preset conditions.

[0059] In step S200, multiple groups of membrane surface structures and cable net structures can be constructed based on the basic parameters determined in step S100; further, in step S100, a combination of multiple groups of basic parameters can be simultaneously input, so that in step S200, more groups of membrane surface structures and cable net structures can be synchronously constructed, thereby generating more air film models, providing a sufficient number of options for subsequent screening steps.

[0060] S300: verifying each air film model, and determining the air film model that has passed the verification as the air film model to be selected.

[0061] Specifically, the verification of the air film model in step S300 may include but is not limited to structural strength verification, air tightness verification, material performance verification and safety verification, so as to screen out unqualified or unsuitable air film models and ensure that the screened air film models can meet basic safety and functional requirements in practical applications;

[0062] Furthermore, if the number of air film models that pass the verification in step S300 is less than a preset number, the method proposed in this embodiment can re-determine the air film model height parameter in the basic parameters and re-execute step S200.

[0063] S400: Compare various parameters of the candidate air film models to determine the best candidate air film model as the final air film model.

[0064] In this embodiment, the parameters used to compare the selected air film models may include but are not limited to material cost, construction cost, air film durability, air film stability and environmental adaptability. In step S400, these parameters of the selected air film models are compared and the optimal air film model is finally determined.

[0065] Preferably, the method further comprises:

[0066] S500: After the final air film model is determined, various loads on the air film model are determined according to the use environment and design requirements to obtain the support reaction value of each support of the air film structure under the most unfavorable load combination, and the embedded parts of each support are designed based on the support reaction value of each support and the cable net structure.

[0067] It should be noted that the load types include possible external influences such as wind load, snow load, temperature change, etc. The support reaction value at each support is calculated by simulating the response of the air film model under the most unfavorable load combination, and used as the basis for designing the cable net structure, support and its embedded parts, so that the designer can further select the appropriate support material, size, shape and arrangement method to ensure the stability and safety of the air film structure under various loads.

[0068] S600: After the final air film model is determined, the cutting model of the air film structure is calculated according to the geometric shape of the air film model to select the type and production process of the membrane surface material and the cable net material, and to determine the parameters of each cable line in the cable net structure and the cutting and arrangement method of the membrane surface material and the cable net material.

[0069] It should be noted that the cutting model is generated according to the actual curvature of the air membrane surface, material properties and design requirements, which can ensure the rational use of membrane surface materials and avoid unnecessary waste. By selecting appropriate membrane surface materials and cable net material types through the cutting model and determining the corresponding production process, the mechanical properties and operability of the air membrane structure can be guaranteed, and then the parameters of each cable in the cable net structure can be determined, such as the diameter, tension, layout, etc. of the cable. Detailed planning of the cutting and layout of membrane surface materials and cable net materials can also optimize the overall performance of the air membrane structure.

[0070] Therefore, the method proposed in this embodiment can selectively execute one or both of steps S500 and S600 after determining the final air membrane model, so as to further optimize the design and manufacturing process of the air membrane structure, realize the all-round optimization design of the air membrane structure, and ensure the optimal balance between the function, economy and operability of the structure.

[0071] Specifically, see Figure 3-Figure 4 , a method for constructing a set of membrane surface structures and a cable net structure corresponding to the membrane surface structures based on basic parameters, and judging whether the preset conditions are met includes:

[0072] S210: constructing a membrane surface structure based on basic parameters, and determining a first air film form through the membrane surface structure, so as to construct a reference cable net structure based on the first air film form.

[0073] Specifically, in step 210, a reference cable can be generated in the first direction and the second direction based on the first air film form, and the reference cable can be extended on the first air film form as a basis to construct a reference cable net structure; preferably, the first direction and the second direction have different directivities, and the angles formed by the two reference cables and the same boundary of the first air film form are relative to each other, and the angle range is 20°-60°, preferably 30°-60°.

[0074] Further, one of any first anchor point formed by the boundary between the reference cable net structure and the air film shape and any second anchor point adjacent to the first anchor point is formed by a reference cable in the first direction or a cable extended from the reference cable in the first direction, and the other is formed by a reference cable in the second direction or a cable extended from the reference cable in the second direction;

[0075] In the reference cable net structure, each cable and its adjacent cables in the same direction form a plurality of non-repeating adjacent cable groups, and at least a first preset ratio of the distances between two cables in the adjacent cable groups is within a preset distance range; optionally, the preset distance range is equal to the product of a preset coefficient and a target distance. For example, if the first preset ratio is 95%, the target distance is L r , preset coefficient That is, at least 95% of the adjacent cable groups have a spacing between two cables. between;

[0076] Among the crossing angles formed based on the intersection points of any two intersecting cables, at least a second preset proportion of the crossing angles are within the preset angle range; illustratively, if the second preset proportion is 80%, and the preset angle range is 80° to 100°, then at least 80% of the crossing angles are between 80° and 100°. By controlling most of the crossing angles to be within the range close to 90°, the stability of the cable net structure can be greatly improved.

[0077] S220: Determine the second air membrane shape through form-finding analysis based on the membrane surface structure and the reference cable net structure, so as to construct the cable net structure based on the second air membrane shape.

[0078] Accordingly, the construction method and construction requirements of the cable net structure in step S220 may be compatible with the construction method and construction requirements of the reference cable net structure in step S210.

[0079] S230: Calculate the difference between the reference cable net structure after form finding and the cable net structure, so that when the difference is not greater than a preset value, it is determined that the membrane surface structure and the cable net structure meet the preset condition.

[0080] Preferably, after determining the second air membrane morphology, the method proposed in this embodiment can adjust the reference cable net structure based on the second air membrane morphology, so as to judge whether the membrane surface structure and the cable net structure meet the preset conditions based on the position difference between the adjusted reference cable net structure and the cable net structure in step S230.

[0081] Furthermore, the method further comprises:

[0082] S240: If the difference value is greater than the preset value, the membrane surface structure is reconstructed based on the cable net structure, and the step of "determining the first air membrane morphology based on the constructed membrane surface structure to construct a reference cable net structure based on the first air membrane morphology" described in step S210 is executed again until the membrane surface structure and the cable net structure meet the preset conditions.

[0083] Specifically, the “verifying each air film model” in step S300 includes:

[0084] Analyze whether the strength and deformation degree of each air film model under the first working air pressure and its corresponding various load combinations meet the preset strength requirements and preset deformation requirements, and determine that the air film model that meets the preset strength requirements and preset deformation requirements passes the verification;

[0085] And / or, analyzing whether the shape of each air film model under the second working gas pressure meets the space size requirement for constructing the air film structure, and determining that the air film model that meets the space size requirement passes the verification.

[0086] Specifically, by verifying the strength and deformation degree of the air membrane structure under a specific working air pressure, it can be ensured that the air membrane structure can maintain the stability and shape of the structure when subjected to loads such as wind load, snow load, deadweight, and internal air pressure, and avoid excessive deformation or damage. When verifying the deformation degree of the air membrane, calculations can be performed based on the elasticity and plasticity of the membrane surface material and the distribution of loads;

[0087] Air membrane structures usually have a certain degree of elasticity, and their shape may change due to changes in air pressure. The spatial dimensions can be associated with parameters such as length parameters, span parameters and height parameters included in the basic parameters. By verifying whether the shape of the air membrane structure meets the spatial dimension requirements, that is, verifying whether the air membrane structure can maintain the predetermined spatial dimensions under the working air pressure, the functionality and safety of the air membrane structure can be guaranteed.

[0088] Optionally, the first preset air pressure may include but is not limited to all normal working air pressures and maximum working air pressures, and the second preset air pressure may include but is not limited to all reference working air pressures;

[0089] It should be noted that the normal working air pressure refers to the air pressure that should be maintained when the air membrane structure is working normally, covering the optional range of pressure that the membrane surface needs to maintain during the design and use of the air membrane structure. The normal working air pressure will not reach the limit of the structure, and the air membrane should be able to maintain safe and efficient operation under the normal working air pressure.

[0090] The maximum working pressure is the maximum pressure value considered when designing the air membrane structure. It represents the highest pressure that the air membrane can withstand under special circumstances. The maximum working pressure is usually used to resist extreme weather conditions such as strong storms and sudden increases in air pressure.

[0091] The reference working air pressure is a standardized air pressure value, which is usually used as a reference value in the design or calculation of air membrane structures. It is generally a reference air pressure preset in the design stage or structural calculation. The reference working air pressure can only be used to analyze, simulate and verify the structural performance, so as to predict the performance of the air membrane structure under different air pressures, but not as the air pressure in the actual operation of the air membrane.

[0092] Preferably, the method further comprises:

[0093] If there is an air membrane model that does not meet the preset strength requirements and / or preset deformation requirements, adjust the cable net spacing of the reference cable net structure in the air membrane model, adjust the oblique cable net crossing angle of the reference cable net structure, and / or adjust part of the cable net structure in the reference cable net structure, and execute the step of "determining the second air membrane shape based on the membrane surface structure and the reference cable net structure" again.

[0094] It should be noted that the cable net spacing refers to the distance between each steel cable in the cable net structure. By adjusting the cable net spacing, the tension and distribution of the air film can be controlled, thereby affecting the shape and stability of the membrane surface. Reducing the cable net spacing can increase the stability and strength of the structure, but it will increase the material consumption accordingly; increasing the cable net spacing may reduce the material consumption, but it will reduce the strength and deformation control ability of the structure accordingly.

[0095] The cables in the cable net structure are usually arranged in an oblique manner. The crossing angle has an important influence on the tension and stability of the air membrane. By adjusting the crossing angle of the cable net structure, the membrane surface morphology can be optimized, excessive deformation can be avoided or the strength of the structure can be improved, which helps to evenly distribute the force transmission under the load, thereby reducing local deformation;

[0096] If some parts of the cable net structure show excessive deformation or insufficient strength, local adjustments can be made using the method proposed in this embodiment to adjust the position and number of steel cables to improve the performance of the overall air film.

[0097] Example 2

[0098] This embodiment proposes an air film structure optimization generation device, which is used to implement the air film structure optimization generation method proposed in Example 1. Figure 5 , the device comprises:

[0099] A configuration module 10, for determining basic parameters for constructing an air film structure in response to an input instruction;

[0100] A generation module 20 is used to construct a plurality of groups of membrane surface structures and cable net structures corresponding to the membrane surface structures based on basic parameters, so as to generate a plurality of air film models through the corresponding groups of membrane surface structures and cable net structures that meet preset conditions;

[0101] A verification module 30 is used to verify each air film model and determine the air film model that has passed the verification as the air film model to be selected;

[0102] A screening module 40 is used to compare various parameters of the selected air film models to determine the best selected air film model as the final air film model;

[0103] The design module 50 is used to determine the various loads on the air film model according to the use environment and design requirements after the final air film model is determined, so as to obtain the support reaction value of each support of the air film structure under the most unfavorable load combination, and design the embedded parts of each support based on the support reaction value of each support and the cable net structure.

[0104] The selection module 60 is used to calculate the cutting model of the air membrane structure according to the geometric shape of the air membrane model after the final air membrane model is determined, so as to select the type and production process of the membrane surface material and the cable net material, and determine the parameters of each cable line in the cable net structure and the cutting and arrangement method of the membrane surface material and the cable net material.

[0105] In this embodiment, the basic parameters of the air film model included in the input instruction include a length parameter L of the air film model, a span parameter S of the air film model, and a height parameter H of the air film model;

[0106] Specifically, the verification module 30 may verify the air film model including but not limited to structural strength verification, air tightness verification, material performance verification and safety verification, so as to screen out unqualified or unsuitable air film models and ensure that the screened air film models can meet the safety and functional requirements in actual applications;

[0107] Furthermore, if the number of air film models verified by the verification module 30 is less than a preset number, the method proposed in this embodiment can enable the configuration module 10 to re-determine the air film model height parameter in the basic parameters and enable the generation module 20 to execute the preset steps again.

[0108] Specifically, the generation module 20 includes:

[0109] A first construction unit 21 is used to construct a membrane surface structure based on basic parameters, and determine a first air film form through the membrane surface structure, so as to construct a reference cable net structure based on the first air film form;

[0110] The second construction unit 22 is used to determine the second air membrane shape through form-finding analysis based on the membrane surface structure and the reference cable net structure, so as to construct the cable net structure based on the second air membrane shape.

[0111] The calculation unit 23 is used to calculate the difference between the reference cable net structure and the cable net structure after form finding, so as to determine that the membrane surface structure and the cable net structure meet the preset conditions when the difference is not greater than a preset value.

[0112] The reconstructing unit 24 is used to reconstruct the membrane surface structure based on the cable net structure when the difference value is greater than the preset value, and to make the first constructing unit 21 execute the step of "determining the first air membrane morphology based on the constructed membrane surface structure, and constructing the reference cable net structure based on the first air membrane morphology" again until the membrane surface structure and the cable net structure meet the preset conditions.

[0113] Specifically, the first construction unit 21 generates a reference cable in the first direction and the second direction based on the first air film form, and extends the reference cable on the first air film form based on the reference cable, so as to construct a reference cable net structure; preferably, the first direction and the second direction have different directivities, and the angles formed by the two reference cables and the same boundary of the first air film form are relative to each other, and the angle range is 20°-60°, preferably 30°-60°.

[0114] Further, one of any first anchor point formed by the boundary between the reference cable net structure and the air film shape and any second anchor point adjacent to the first anchor point is formed by a reference cable in the first direction or a cable extended from the reference cable in the first direction, and the other is formed by a reference cable in the second direction or a cable extended from the reference cable in the second direction;

[0115] In the reference cable net structure, each cable and its adjacent cables in the same direction form a plurality of non-repeating adjacent cable groups, and at least a first preset ratio of the distances between two cables in the adjacent cable groups is within a preset distance range; optionally, the preset distance range is equal to the product of a preset coefficient and a target distance. For example, if the first preset ratio is 95%, the target distance is L r , preset coefficient That is, at least 95% of the adjacent cable groups have a spacing between two cables. between;

[0116] Among the crossing angles formed based on the intersection points of any two intersecting cables, at least a second preset proportion of the crossing angles are within the preset angle range; illustratively, if the second preset proportion is 80%, and the preset angle range is 80° to 100°, then at least 80% of the crossing angles are between 80° and 100°. By controlling most of the crossing angles to be within the range close to 90°, the stability of the cable net structure can be greatly improved.

[0117] Accordingly, the second construction unit 22 may construct the cable net structure using a construction method that is compatible with the construction of the reference cable net structure by the first construction unit 21 .

[0118] Preferably, after the second construction unit 22 determines the second air membrane morphology, the reference cable net structure can be adjusted based on the second air membrane morphology, so that the calculation unit 23 determines whether the membrane surface structure and the cable net structure meet the preset conditions based on the position difference between the adjusted reference cable net structure and the cable net structure.

[0119] Specifically, the verification module 30 may verify each air film model in the following manner:

[0120] Analyze whether the strength and deformation degree of each air film model under the first working air pressure and its corresponding various load combinations meet the preset strength requirements and preset deformation requirements, and determine that the air film model that meets the preset strength requirements and preset deformation requirements passes the verification;

[0121] And / or, analyzing whether the shape of each air film model under the second working gas pressure meets the space size requirement for constructing the air film structure, and determining that the air film model that meets the space size requirement passes the verification.

[0122] Preferably, the verification module 30 is also used to adjust the cable net spacing of the reference cable net structure in the air film model, adjust the cable net oblique crossing angle of the reference cable net structure, and / or adjust part of the cable net structure in the reference cable net structure when there is an air film model that does not meet the preset strength requirements and / or preset deformation requirements, and enable the first construction unit 21 to execute the step of "determining the second air film morphology based on the membrane surface structure and the reference cable net structure" again.

[0123] In summary, the present invention proposes a method and device for optimizing the generation of an air membrane structure. The scheme proposed in the present invention can construct multiple membrane surface structures and corresponding cable net structures based on the provided parameters, so as to effectively respond to different design requirements and environmental conditions. By setting preset conditions to combine and screen air membrane models that meet the requirements, it is possible to screen out models that meet the core requirements. On this basis, the air membrane model with the best comprehensive performance indicators can be further screened out, which can avoid repeated adjustments and trial and error processes in manual design, improve design efficiency and reduce errors caused by manual intervention.

[0124] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for optimizing and generating an air film structure, characterized in that: The method comprises: In response to the input command, determining basic parameters for constructing the air film structure; Based on the basic parameters, several groups of membrane surface structures and cable net structures corresponding to the membrane surface structures are constructed to generate several air film models through the corresponding groups of membrane surface structures and cable net structures that meet the preset conditions; Verifying each of the air film models, and determining the air film model that has passed the verification as the air film model to be selected; The parameters of the selected air film models are compared to determine the best selected air film model as the final air film model.

2. The method according to claim 1, characterized in that A method for constructing a set of membrane surface structures and a cable net structure corresponding to the membrane surface structures based on the basic parameters and judging whether the preset conditions are met includes: constructing a membrane surface structure based on the basic parameters, and determining a first air film shape through the membrane surface structure, so as to construct a reference cable net structure based on the first air film shape; Determine a second air membrane shape based on the membrane surface structure and the reference cable net structure through form-finding analysis, so as to construct a cable net structure based on the second air membrane shape; The difference value between the reference cable net structure after form-finding and the cable net structure is calculated, so that when the difference value is not greater than a preset value, it is determined that the membrane surface structure and the cable net structure meet the preset condition.

3. The method according to claim 2, characterized in that The method further comprises: If the difference value is greater than a preset value, the membrane surface structure is reconstructed based on the cable net structure, and the step of "determining the first air membrane morphology through the membrane surface structure to construct a reference cable net structure based on the first air membrane morphology" is performed again until the membrane surface structure and the cable net structure meet the preset conditions.

4. The method according to claim 2, characterized in that: The "verifying each of the air film models" includes: Analyze whether the strength and deformation degree of each air film model under the first working air pressure and its corresponding various load combinations meet the preset strength requirements and preset deformation requirements, and determine that the air film model that meets the preset strength requirements and the preset deformation requirements passes the verification.

5. The method according to claim 4, characterized in that The method further comprises: If there is an air membrane model that does not meet the preset strength requirements and / or the preset deformation requirements, adjust the cable net spacing of the reference cable net structure in the air membrane model, adjust the oblique cable net crossing angle of the reference cable net structure, and / or adjust part of the cable net structure in the reference cable net structure, and execute the step of "determining the second air membrane morphology based on the membrane surface structure and the reference cable net structure" again.

6. The method according to claim 1 or 4, characterized in that: The "verifying each of the air film models" includes: Analyze whether the shape of each of the air film models under the second working gas pressure meets the spatial dimension requirements for constructing the air film structure, and determine that the air film models that meet the spatial dimension requirements pass the verification.

7. The method according to claim 1, characterized in that The basic parameters include an air film model length parameter, an air film model span parameter and an air film model height parameter, and the method further includes: If the number of the air film models that pass the verification is less than the preset number, the air film model height parameters in the basic parameters are re-determined, and the step of "constructing several groups of membrane surface structures and cable net structures corresponding to the membrane surface structures based on the basic parameters, so as to generate several air film models through each group of corresponding membrane surface structures and cable net structures that meet the preset conditions" is executed again.

8. The method according to claim 1, characterized in that The method further comprises: After determining the final air film model, the various loads on the air film model are determined according to the use environment and design requirements to obtain the support reaction value of each support of the air film structure under the most unfavorable load combination, and the embedded parts of each support are designed based on the support reaction value of each support and the cable net structure.

9. The method according to claim 1, characterized in that: The method further comprises: After determining the final air membrane model, the cutting model of the air membrane structure is calculated according to the geometric shape of the air membrane model to select the type and production process of the membrane surface material and cable net material, and to determine the parameters of each cable line in the cable net structure and the cutting and arrangement methods of the membrane surface material and cable net material.

10. An optimized generation device for an air film structure, characterized in that: The device comprises: A configuration module, for determining basic parameters for constructing an air film structure in response to an input instruction; A generation module, used to construct a plurality of groups of membrane surface structures and cable net structures corresponding to the membrane surface structures based on the basic parameters, so as to generate a plurality of air film models through the corresponding groups of membrane surface structures and cable net structures that meet the preset conditions; A verification module, used for verifying each of the air film models, and determining the air film model that has passed the verification as a candidate air film model; The screening module is used to compare the parameters of the candidate air film models to determine the best candidate air film model as the final air film model.

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