A building template pre-tightening simulation analysis method, electronic equipment and storage medium
By using spring elements to simulate fasteners in building formwork structures, combined with multi-step analysis and mesh generation, the problem of inaccurate simulation of preload in existing technologies is solved, achieving efficient and accurate preload simulation of building formwork, applicable to the installation of fasteners of various shapes.
Patent Information
- Application Number
- CN202510687162.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-27
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2045-05-27
AI Technical Summary
Existing finite element analysis cannot accurately simulate the preload of through-wall bolts, steel bars, or steel wires in building formwork structures, making it difficult to control the deformation of building formwork and cement under their own weight in engineering application scenarios with strict requirements for engineering error.
Spring elements are used to simulate the fasteners of building formwork. By constructing a geometric model and applying preload, the preload is adjusted through a multi-step analysis process to meet the error requirements. Combined with mesh generation and bonding surface processing, the preload simulation of building formwork is achieved.
It improves the computational efficiency and accuracy of simulation analysis, can adapt to the pre-tightening installation of fasteners of various shapes, reduces computational complexity, and improves the control precision of pre-tightening force.
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Figure CN120524574B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of simulation analysis, in particular to a building formwork pre-tightening simulation analysis method, an electronic device and a storage medium. BACKGROUND
[0002] In the process of building a building formwork, in order to avoid the expansion deformation of the formwork caused by the cement injected into the formwork pool later, it is necessary to use fasteners such as wall bolts, steel bars or steel wires to pre-tighten and reinforce the building formwork, and the pre-tightening deformation can offset the deformation caused by the self-weight of the cement. In engineering application scenarios with relatively strict engineering error requirements, it is necessary to make the error between the pre-tightening deformation of the building formwork and the deformation caused by the self-weight of the cement equal to the set error, so it is necessary to accurately apply the pre-tightening force of the pre-tightening and reinforcement. At present, finite element analysis is often used to simulate the real physical system (geometry and load condition). However, in the current finite element analysis, the wall bolts, steel bars or steel wires cannot be pre-tightened in the building formwork structure. Therefore, it is urgent to improve the simulation analysis scheme that can realize the pre-tightening effect of the building formwork. SUMMARY
[0003] In view of the above technical problems, the technical scheme adopted by the present application is as follows:
[0004] According to the first aspect of the present application, a building formwork pre-tightening simulation analysis method is provided, which comprises the following steps:
[0005] S100, based on the actual building formwork structure, a geometric model corresponding to the building formwork structure is constructed; wherein the building formwork structure comprises at least one pair of building formworks, each pair of building formworks comprises two building formworks arranged symmetrically, and at least one pair of building formworks are connected to form a containing space for containing building materials to be shaped.
[0006] S200, based on the current pre-tightening force and the fastening structure actually used by each pair of building formwork structures and the installation position of the fastening structure, a spring assembly corresponding to the fastening structure is added between the geometric models of each pair of building formworks, to obtain a current initial geometric model; wherein the fastening structure actually used by each pair of building formwork structures comprises at least one fastener, each fastener is represented by a spring assembly, and the spring assembly comprises at least two spaced spring units; the two ends of each spring assembly are fixedly connected with the geometric models of the corresponding building formworks.
[0007] S300, for each spring unit in the current initial geometric model, a binding surface bound with the end of the spring unit is arranged at the end of the spring unit not connected with the building formwork.
[0008] S400, obtain a simulation deformation of a connection region of each building formwork and the corresponding spring unit in the current initial geometric model based on the preset multiple analysis steps, to obtain a current simulation deformation set.
[0009] S500, if all simulation deformations in the current simulation deformation set are within the preset deformation range, take the current pre-tightening force as the target pre-tightening force, otherwise, adjust the current pre-tightening force, take the adjusted pre-tightening force as the current pre-tightening force, and execute S200.
[0010] Further, the preset multiple analysis steps include first to fourth preset analysis steps, and S400 specifically includes:
[0011] S401, in the first preset analysis step, a displacement constraint is applied to one of any two adjacent ends in each spring assembly in the current initial geometric model, and a fixed constraint is applied to the other end, so that the end with the displacement constraint is stretched along the axial direction of the corresponding spring unit by a set distance to coincide with the corresponding other end, to obtain a first analysis model.
[0012] S402, in the second preset analysis step, the two binding surfaces corresponding to the two adjacent ends in the first analysis model are set as a contact relationship that does not separate after contact, and the fixed constraint of the end with the fixed constraint is removed, to obtain a second analysis model.
[0013] S403, in the third preset analysis step, the displacement constraint of the end with the displacement constraint in the second analysis model is removed, to obtain a third analysis model.
[0014] S404, based on the pressure borne by the actually used building formwork structure, a corresponding pressure is applied to the third analysis model, to obtain a fourth analysis model and perform simulation calculation on the fourth analysis model, to obtain a corresponding simulation result, and based on the simulation result, a simulation deformation of a connection region of each building formwork and the corresponding spring unit is obtained.
[0015] Further, the fastener is a straight structure or a curved structure.
[0016] Further, if the fastener is a straight structure, the spring assembly corresponding to the fastener includes two interval arranged spring units, and the interval between the two interval arranged spring units is equal to the sum of the deformations of the two spring units; if the fastener is a curved structure, the spring assembly corresponding to the fastener includes m interval arranged spring units, m≥2, and the sum of the intervals between the m interval arranged spring units is equal to the sum of the deformations of the m spring units.
[0017] Further, in S500, the adjustment of the current pre-tightening force specifically includes:
[0018] If the deformation direction corresponding to the current simulation deformation set is the direction pointing to the center of the building template structure, set the current pre-tightening force F c = (F c -△F), if the deformation direction corresponding to the current simulation deformation set is the direction away from the center of the building template structure, set F c =F c +△F,△F is a set unit pre-tightening force.
[0019] Further, in the initial geometric model, the geometric model of the building template is meshed by the following steps:
[0020] S10, meshing the geometric model of the building template using the first mesh unit to obtain the corresponding first mesh model.
[0021] S11, meshing the first mesh unit corresponding to the connection area of the building template and the spring unit in the first mesh model using the second mesh unit to obtain the meshed geometric model of the building template.
[0022] Further, the fastener is a bolt, a metal rod or a metal wire.
[0023] Further, the m interval spring units are obtained by the following steps:
[0024] S20, based on the fastening structure actually used by each pair of building template structures and the installation position of the fastening structure, a curve corresponding to the fastening structure is obtained, and the coordinates of the two endpoints of the curve are the coordinates of the connection points of the fastening structure and the two building templates.
[0025] S21, if the current first curve segment set is not empty, for each to-be-processed curve segment in the current first curve segment set, based on the segmentation point of the to-be-processed curve segment, the to-be-processed curve segment is divided into two curve subsegments, and each curve subsegment is represented by a straight line segment, and S22 is executed; if the current first curve segment set is empty, S24 is executed; wherein the horizontal coordinate of the segmentation point of the to-be-processed curve segment is the average of the horizontal coordinates of the two endpoints of the curve segment currently needing to be processed, and the vertical coordinate of the segmentation point of the to-be-processed curve segment is the average of the vertical coordinates of the two endpoints of the curve segment currently needing to be processed; the initial value of the current first curve segment set is the curve.
[0026] S22, all to-be-processed curve segments in the current first curve segment set are added to the initialized intermediate set to obtain the current to-be-processed intermediate set, and the current first curve segment set is initialized as an empty set, and the initialized intermediate set is an empty set.
[0027] S23, for each to-be-processed curve segment in the current to-be-processed intermediate set, if the included angle between the two straight line segments corresponding to the to-be-processed curve segment is greater than or equal to a set angle threshold, the two curve sub-segments corresponding to the to-be-processed curve segment are added to the current first curve segment set as new to-be-processed curve segments; otherwise, the two curve sub-segments corresponding to the to-be-processed curve segment are added to the current second curve segment set as target curve segments; S21 is executed; the initial value of the current second curve segment set is empty.
[0028] S24, determining m spring units arranged at intervals based on the straight line segments corresponding to the m target curve segments in the current second curve segment set, wherein the length of each spring unit in the m spring units is equal to the length of the straight line segment corresponding to the corresponding curve segment minus the deformation amount of the spring unit, the interval between the adjacent two spring units in the first m-1 spring units is equal to the deformation amount of the former spring unit of the adjacent two spring units, and the interval between the last two spring units in the m spring units is equal to the sum of the deformation amounts of the two spring units. According to the second aspect of the present application, an electronic device is provided, comprising a processor and a memory; the processor is used to execute the steps of the method of the first aspect of the present application by calling the program or instructions stored in the memory.
[0029] According to the second aspect of the present application, a computer readable storage medium is provided, which stores programs or instructions for making a computer execute the steps of the method of the first aspect of the present application.
[0030] The present application has at least the following beneficial effects:
[0031] The building template pre-tightening simulation analysis method provided by the embodiment of the present application exerts pre-tightening on the building template by using spring units. Since the spring unit is a 1-dimensional unit and each spring unit has only axial freedom, the calculation amount is small, the calculation efficiency is high, the calculation complexity is low, and the convergence is good. In addition, the size of the pre-tightening force can be indirectly controlled by adjusting the elastic modulus of the spring unit, and the application of multiple working conditions is more convenient. Furthermore, the pre-tightening of the building template is realized by the step-by-step method of the constraint condition and the binding condition of the spring unit, which can be suitable for the pre-tightening installation of various shapes of pre-tightening components.
[0032] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS
[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0034] Figure 1 A flowchart of a simulation analysis method for pre-tightening building formwork provided in an embodiment of the present invention;
[0035] Figure 2 This is a schematic diagram of curve segmentation in an embodiment of the present invention;
[0036] Figure 3 This is a schematic diagram of a building formwork pre-tightening simulation structure provided in an embodiment of the present invention. Detailed Implementation
[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0039] It should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the steps as sequential processes, many of these steps can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the steps can be rearranged. A process can be terminated when its operation is complete, but it may also have additional steps not included in the figures. A process can correspond to a method, function, procedure, subroutine, subroutine, etc.
[0040] This invention provides a simulation analysis method for pre-tightening of building formwork, the method including, for example... Figure 1 The following steps are shown:
[0041] S100, constructing a geometric model of the corresponding building formwork structure based on the actually used building formwork structure; wherein the building formwork structure comprises at least one pair of building formworks, each pair of building formworks comprises two building formworks symmetrically arranged, and the at least one pair of building formworks are connected to each other to form a containing space for containing building materials to be shaped.
[0042] In the embodiment of the present application, the actually used building formwork structure can be square, circular, polygonal, etc. In the case of being circular, the building formwork can be at least one pair. Since only the building materials along the vertical direction perpendicular to the ground need to be fixed during actual use, the building formwork structure is an open structure up and down.
[0043] In the embodiment of the present application, the building materials can be concrete, cement, etc.
[0044] S200, adding a corresponding spring assembly of the fastening structure between the geometric models of each pair of building formworks based on the current pre-tightening force and the fastening structure actually used by each pair of building formwork structures and the installation position of the fastening structure, to obtain a current initial geometric model.
[0045] Wherein, the fastening structure actually used by each pair of building formwork structures comprises at least one fastener, each fastener is represented by a spring assembly, and the spring assembly comprises at least two spring units arranged at intervals; both ends of each spring assembly are fixedly connected with the geometric models of the corresponding building formworks, i.e. the spring units at both ends of the spring assembly are fixedly connected with the geometric models of the corresponding building formworks.
[0046] In the embodiment of the present application, the installation position of the fastening structure refers to the connection position between the fastening structure and the corresponding two building formworks, i.e. the position connected with the building formwork. The initial value of the current pre-tightening force can be the initial pre-tightening force. The initial pre-tightening force can be determined based on the actual situation.
[0047] In the embodiment of the present application, in the initial geometric model, the geometric model of the building formwork can be meshed by the following steps:
[0048] S10, meshing the geometric model of the building formwork by using a first mesh unit to obtain a corresponding first mesh model.
[0049] S11, meshing the first mesh unit corresponding to the connection area of the building formwork and the spring unit in the first mesh model by using a second mesh unit to obtain the meshed geometric model of the building formwork.
[0050] In the embodiment of the present application, the size of the second grid unit can be one hundredth or one twentieth of the size of the first grid unit. Since the connection region is divided by the grid units of smaller size, the stress condition of the connection region can be analyzed better.
[0051] The person skilled in the art knows that any method of meshing a geometric model is within the protection scope of the present application. In addition, the grid and spring unit can be provided with corresponding material properties.
[0052] In the embodiment of the present application, the fastener can be a bolt, a metal rod or a metal wire, etc.
[0053] Further, in the embodiment of the present application, the fastener can be a straight structure or a curved structure.
[0054] In the embodiment of the present application, if the fastener is a straight structure, the spring assembly corresponding to the fastener includes two spaced spring units, and the interval between the two spaced spring units is equal to the sum of the deformation amounts of the two spring units. Specifically, the interval ΔL between the two spaced spring units is (F c ×L1) / (G×k) + (F c ×L2) / (G×k), where F c is the current pre-tightening force, L1 is the initial length (the length in the non-stretched state) of one of the two spring units, L2 is the initial length of the other of the two spring units, G is the Young's modulus, and k is the spring stiffness coefficient.
[0055] In the embodiment of the present application, if the fastener is a straight structure, the initial lengths of the two spaced spring units are the same.
[0056] If the fastener is a curved structure, the spring assembly corresponding to the fastener includes m spaced spring units, m≥2, and the sum of the intervals between the m spaced spring units is equal to the sum of the deformation amounts of the m spring units.
[0057] In the embodiment of the present application, the value of m can be determined based on the specific structure of the fastener.
[0058] Further, the m spaced spring units can be obtained by the following steps:
[0059] S20, based on the fastening structure actually used by each pair of building formwork structures and the installation position of the fastening structure, a curve corresponding to the fastening structure is obtained, and the coordinates of the two end points of the curve are respectively the coordinates of the connection points of the fastening structure and the two building formworks.
[0060] In this embodiment of the invention, the curve can be represented by the expression C = f(x, y), where C is the curve and f() is the function expression. The two endpoints of the curve can be (x1, y1) and (x... n y n () indicates that n is the number of points on the curve. x1 and y1 are the x and y coordinates of the starting endpoint p1 of the curve, respectively. n and y n These are the x and y coordinates of the endpoint pn of the curve, respectively. Figure 2 As shown.
[0061] In this embodiment of the invention, the rectangular coordinate system containing the curve is located in the plane containing the curve, wherein the horizontal direction of the plane containing the curve is the x-axis and the vertical direction is the y-axis.
[0062] Those skilled in the art will know that if the shape and installation location of the fastening structure are known, its curve expression can be determined.
[0063] S21. If the current set of first curve segments is not empty, that is, there are curve segments to be processed, for each curve segment to be processed in the current set of first curve segments, based on the segmentation point of the curve segment to be processed, the curve segment to be processed is divided into two curve sub-segments, and each curve sub-segment is represented by a straight line segment, and S22 is executed; if the current set of first curve segments is empty, S24 is executed.
[0064] Wherein, the x-coordinate of the segment point of the curve segment to be processed is the average of the x-coordinates of the two endpoints of the curve segment to be processed, and the y-coordinate of the segment point of the curve segment to be processed is the average of the y-coordinates of the two endpoints of the curve segment to be processed; the initial value of the current first curve segment set is the curve.
[0065] like Figure 2 As shown, curve C is divided into two equal segments, C1 and C2. Segment C1 can be approximated by a first straight line segment SL1, and segment C2 can be approximated by a second straight line segment SL2. The first straight line segment can be represented by the following equation: y1 = k1 × x + b1, x1 < x < x e k1 is the slope of the first line equation, b1 is the intercept of the first line equation, and x... e Let be the x-coordinate of the segment point pm of curve C. The second line segment can be expressed by the following equation: y² = k² × x + b², where x... e <x<x n k2 is the slope of the second line equation, and b2 is the intercept of the second line equation.
[0066] S22, add all the to-be-processed curve segments in the current first curve segment set to the initialized intermediate set to obtain a current to-be-processed intermediate set, and initialize the current first curve segment set as an empty set.
[0067] In the embodiment of the application, the initialized intermediate set is an empty set. The current to-be-processed intermediate set includes all the to-be-processed curve segments in the current first curve segment set which are not initialized.
[0068] S23, for each to-be-processed curve segment in the current to-be-processed intermediate set, if the included angle between the two straight line segments corresponding to the to-be-processed curve segment is greater than or equal to a set angle threshold, it indicates that the two curve sub-segments corresponding to the to-be-processed curve segment still need to be segmented, then the two curve sub-segments corresponding to the to-be-processed curve segment are added to the current first curve segment set as new to-be-processed curve segments; otherwise, if the included angle between the two straight line segments corresponding to the to-be-processed curve segment is less than the set angle threshold, it indicates that the two curve sub-segments corresponding to the to-be-processed curve segment do not need to be segmented, then the two curve sub-segments corresponding to the to-be-processed curve segment are added to the current second curve segment set as target curve segments; and S21 is executed.
[0069] In the embodiment of the application, the initial value of the current second curve segment set is an empty value. All the target curve segments in the current second curve segment set are curve segments which do not need to be segmented.
[0070] In the embodiment of the application, the included angle between the two straight line segments corresponding to the to-be-processed curve segment can be calculated by a trigonometric function formula. The set angle threshold can be set based on actual needs. In an illustrative embodiment, the set angle threshold can be set to 160°.
[0071] S24, determine m spring units arranged at intervals based on the straight line segments corresponding to the m target curve segments in the current second curve segment set.
[0072] In the embodiment of the application, the length of each spring unit in the m spring units is equal to the length of the straight line segment corresponding to the target curve segment corresponding to the spring unit minus the deformation amount of the spring unit, the interval between the adjacent two spring units in the first m-1 spring units is equal to the deformation amount of the former spring unit in the adjacent two spring units, and the interval between the last two spring units in the m spring units is equal to the sum of the deformation amounts of the two spring units.
[0073] In the embodiment of the application, the straight line segment corresponding to each target curve segment can be obtained by a straight line length calculation formula.
[0074] Specifically, the length L of the i-th spring unit in the m spring units is i The following conditions are met: Li =L i s / (1+F c / (G×k)),L i s is the length of the straight line segment corresponding to the i-th spring unit, i is 1 to m. Those skilled in the art know that the placement position of the spring unit is the same as the position of the corresponding straight line segment, that is, the m spring units form a corresponding curved structure.
[0075] S300, for each spring unit in the current initial geometric model, a binding surface is set at the end of the spring unit which is not connected with the building template, and the end is bound with the binding surface.
[0076] In an illustrative embodiment of the present application, the geometric model with the binding surface can be as shown in Figure 3 . Among them, Pa1 is the connected end of spring A and template A, Pa2 is the other end of spring A, Pb1 is the connected end of spring B and template B, and Pb2 is the other end of spring B, wherein binding surfaces Sa and Sb are respectively arranged on Pa2 and Pb2.
[0077] In an embodiment of the present application, the bound end and the binding surface will move synchronously.
[0078] S400, based on a plurality of preset analysis steps, obtaining the simulation deformation amount of the connection area of each building template and the corresponding spring unit in the current initial geometric model, to obtain a current simulation deformation amount set.
[0079] In an embodiment of the present application, the plurality of preset analysis steps include a first preset analysis step to a fourth preset analysis step. S400 specifically includes:
[0080] S401, in the first preset analysis step, a displacement constraint is applied to one end of any two adjacent ends in each spring assembly in the current initial geometric model, that is, a displacement constraint is applied to one end of the two adjacent ends of the two adjacent spring units, for example Figure 3 as shown in the end Pa2, and the other end is applied with a fixed constraint, so that the end with the displacement constraint is stretched along the axial direction of the corresponding spring unit by a set distance to coincide with the corresponding other end, to obtain a first analysis model.
[0081] In an embodiment of the present application, the displacement constraint refers to stretching the spring unit along the length direction of the spring by a set length, and the set distance is equal to the interval between the two adjacent spring units.
[0082] In the embodiment of the present application, in the case that the fastener is a curved structure, one of the two adjacent ends is sequentially subjected to displacement constraint and the other end is subjected to fixed constraint, so that the end subjected to displacement constraint is stretched along the axial direction of the corresponding spring unit by a set distance to coincide with the other end.
[0083] S402, in the second preset analysis step, the two binding surfaces corresponding to the two adjacent ends in the first analysis model are set as contact relationship without separation after contact, and the fixed constraint of the end subjected to fixed constraint is removed, to obtain a second analysis model.
[0084] S403, in the third preset analysis step, the displacement constraint of the end subjected to displacement constraint in the second analysis model is removed, to obtain a third analysis model.
[0085] In this step, due to the removal of displacement constraint, the corresponding end will rebound under the joint action of the two spring units, and the two spring units will be tightened, thereby realizing pre-tightening installation.
[0086] S404, based on the pressure borne by the actually used building template structure, a corresponding pressure is applied to the third analysis model, to obtain a fourth analysis model and perform simulation calculation on the fourth analysis model, to obtain a corresponding simulation result, and based on the simulation result, obtain the simulation deformation of the connection area of each building template and the corresponding spring unit.
[0087] In the embodiment of the present application, the pressure borne by the actually used building template structure can be hydrostatic pressure. After the corresponding pressure is applied to the third analysis model, the template will be deformed under the combined influence of pre-tightening force and hydrostatic pressure, thereby being able to simulate and analyze the actual deformation process of the template.
[0088] S500, if all simulation deformations in the current simulation deformation set are within the preset deformation range, the current pre-tightening force is taken as the target pre-tightening force, otherwise, the current pre-tightening force is adjusted, and the adjusted pre-tightening force is taken as the current pre-tightening force, and S200 is executed.
[0089] In the embodiment of the present application, the preset deformation range can be set based on actual needs. In one illustrative embodiment, the preset deformation range can be an engineering error, for example, ±0.5mm.
[0090] Further, in S500, the adjustment of the current pre-tightening force specifically includes:
[0091] If the deformation direction corresponding to the current simulation deformation set is the direction pointing to the center of the building template structure, it indicates that the template is too tight, the current pre-tightening force is too large, and the pre-tightening force needs to be reduced. The current pre-tightening force F c= (F c -△F), the deformation direction corresponding to the current simulation deformation set is the direction away from the center of the building template structure, which indicates that the template is not tight enough, the current pre-tightening force is small, and the pre-tightening force needs to be increased, and F c = F c +△F, and △F is a set unit pre-tightening force.
[0092] In the embodiment of the present application, the set unit pre-tightening force can be set based on actual needs, for example, can be set to one-tenth of the initial pre-tightening force, etc.
[0093] The embodiment of the present application also provides an electronic device, comprising: at least one processor; and a memory in communication connection with the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are arranged to execute the method described in the embodiment of the present application.
[0094] The embodiment of the present application also provides a computer readable storage medium, which stores computer executable instructions, and the computer instructions are used to execute the method described in the embodiment of the present application.
[0095] It should be understood that the steps can be reordered, added or deleted using the various forms of flow shown above. For example, the steps described in the present application can be executed in parallel, sequentially or in different order, as long as the desired results of the technical solutions disclosed in the present application can be achieved, which is not limited herein.
[0096] The above specific embodiments do not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent replacement and improvement within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A method for analyzing a pre-tightening simulation of a building formwork, characterized in that, The method comprises the following steps: S100, constructing a geometric model of a corresponding building formwork structure based on an actually used building formwork structure; wherein the building formwork structure comprises at least one pair of building formworks, each pair of building formworks comprises two building formworks symmetrically arranged, and the at least one pair of building formworks are connected to each other to form a containing space for containing building materials to be shaped; S200, adding a corresponding spring assembly of a fastening structure between geometric models of each pair of building formworks based on a current pre-tightening force and the fastening structure actually used by each pair of building formwork structures and an installation position of the fastening structure, to obtain a current initial geometric model; wherein the fastening structure actually used by each pair of building formwork structures comprises at least one fastener, each fastener is represented by one spring assembly, the spring assembly comprises at least two spring units arranged at intervals, and two ends of each spring assembly are fixedly connected to geometric models of corresponding building formworks, respectively; an initial value of the current pre-tightening force is an initial pre-tightening force; S300, for each spring unit in the current initial geometric model, a binding surface bound to an end of the spring unit which is not connected to a building formwork is arranged at the end; S400, based on a plurality of preset analysis steps, a simulation deformation amount of a connecting region of each building formwork and a corresponding spring unit in the current initial geometric model is obtained, to obtain a current simulation deformation amount set; S500, if all simulation deformation amounts in the current simulation deformation amount set are within a preset deformation range, the current pre-tightening force is taken as a target pre-tightening force, otherwise, the current pre-tightening force is adjusted, and the adjusted pre-tightening force is taken as the current pre-tightening force, and S200 is executed; Wherein, the plurality of preset analysis steps comprise a first preset analysis step to a fourth preset analysis step, and S400 specifically comprises: S401, in the first preset analysis step, one end of any two adjacent ends in each spring assembly in the current initial geometric model is subjected to a displacement constraint, and the other end is subjected to a fixed constraint, so that the end subjected to the displacement constraint is stretched along an axial direction of the corresponding spring unit by a set distance to coincide with the corresponding other end, to obtain a first analysis model; S402, in the second preset analysis step, two binding surfaces corresponding to the two adjacent ends in the first analysis model are set as a contact relationship which does not separate after contact, and the fixed constraint of the end subjected to the fixed constraint is removed, to obtain a second analysis model; S403, in the third preset analysis step, the displacement constraint of the end subjected to the displacement constraint in the second analysis model is removed, to obtain a third analysis model; S404, based on a pressure borne by the actually used building formwork structure, a corresponding pressure is applied to the third analysis model, to obtain a fourth analysis model, and a simulation calculation is performed on the fourth analysis model, to obtain a corresponding simulation result, and a simulation deformation amount of a connecting region of each building formwork and a corresponding spring unit is obtained based on the simulation result.
2. The method of claim 1, wherein, The fastener is in a straight line structure or a curved structure.
3. The method of claim 2, wherein, If the fastener is a straight structure, the spring assembly corresponding to the fastener comprises two spaced spring units, and the interval between the two spaced spring units is equal to the sum of the deformation amounts of the two spring units; if the fastener is a curved structure, the spring assembly corresponding to the fastener comprises m spaced spring units, m is greater than or equal to 2, and the sum of the intervals between the m spaced spring units is equal to the sum of the deformation amounts of the m spring units.
4. The method of claim 1, wherein, In S500, the current pre-tightening force is adjusted, and the adjustment specifically includes: If the deformation direction corresponding to the current simulation deformation set is the direction pointing to the center of the building template structure, set the current pre-tightening force F c = (F c -△F), if the deformation direction corresponding to the current simulation deformation set is the direction away from the center of the building template structure, set F c =F c +△F, and△F is a set unit pre-tightening force.
5. The method of claim 1, wherein, In the initial geometric model, the geometric model of the building formwork is meshed by the following steps: S10, the geometric model of the building formwork is meshed by using the first mesh unit to obtain a corresponding first mesh model; S11, the first mesh unit corresponding to the connection area of the building formwork and the spring unit in the first mesh model is meshed by using the second mesh unit to obtain the geometric model of the building formwork which has been meshed.
6. The method of claim 1, wherein, The fastener is a bolt, a metal rod or a metal wire.
7. The method of claim 3, wherein, Wherein, The m spaced spring units are obtained by the following steps: S20, based on the fastening structure actually used by each pair of building formwork structures and the installation position of the fastening structure, a curve corresponding to the fastening structure is obtained, and the coordinates of the two end points of the curve are the coordinates of the connection points of the fastening structure and the two building formworks, respectively; S21, if the current first curve segment set is not empty, for each to-be-processed curve segment in the current first curve segment set, the to-be-processed curve segment is divided into two curve sub-segments based on the segmentation point of the to-be-processed curve segment, and each curve sub-segment is represented by a straight line segment, and S22 is executed; if the current first curve segment set is empty, S24 is executed; wherein the horizontal coordinate of the segmentation point of the to-be-processed curve segment is the average of the horizontal coordinates of the two end points of the curve segment currently to be processed, and the vertical coordinate of the segmentation point of the to-be-processed curve segment is the average of the vertical coordinates of the two end points of the curve segment currently to be processed; the initial value of the current first curve segment set is the curve; S22, all to-be-processed curve segments in the current first curve segment set are added to the initialized intermediate set to obtain a current to-be-processed intermediate set, and the current first curve segment set is initialized as an empty set; the initialized intermediate set is an empty set; S23, for each to-be-processed curve segment in the current to-be-processed intermediate set, if the included angle between the two straight line segments corresponding to the to-be-processed curve segment is greater than or equal to a set angle threshold, the two curve sub-segments corresponding to the to-be-processed curve segment are added to the current first curve segment set as new to-be-processed curve segments; otherwise, the two curve sub-segments corresponding to the to-be-processed curve segment are added to the current second curve segment set as target curve segments; S21 is executed; the initial value of the current second curve segment set is empty; S24, determining m spring units arranged at intervals based on the straight line segments corresponding to the m target curve segments in the current second curve segment set, wherein the length of each spring unit in the m spring units is equal to the length of the straight line segment corresponding to the corresponding curve segment minus the deformation amount of the spring unit, the interval between two adjacent spring units in the first m-1 spring units is equal to the deformation amount of the former spring unit of the two adjacent spring units, and the interval between the last two spring units in the m spring units is equal to the sum of the deformation amounts of the two spring units.
8. An electronic device, comprising: comprising a processor and a memory; the processor is configured to execute the steps of the method according to any one of claims 1 to 7 by invoking programs or instructions stored in the memory.
9. A computer-readable storage medium, characterized in that, the computer readable storage medium is configured to store programs or instructions, which cause the computer to execute the steps of the method according to any one of claims 1 to 7.
Citation Information
Patent Citations
Fastening connecting device for building pouring formwork
CN112832518A
Building template fastening assembly and building template system
CN218234351U