Two-dimensional fishbone equivalent model modeling method and device, electronic equipment and storage medium

Abstract

This invention provides a method, apparatus, electronic device, and storage medium for modeling a two-dimensional fishbone equivalent model, relating to the field of equivalent model technology. The method includes: obtaining a refined finite element model; merging frame beams, frame columns, and connecting beams to obtain equivalent frame beams, equivalent frame columns, and equivalent connecting beams; performing equivalent processing on the core tube to obtain an equivalent core tube; distributing the mass of the floor slab to the equivalent frame beams and rigid beams to generate a two-dimensional fishbone model; performing modal verification and error adjustment on the two-dimensional fishbone model to obtain a target two-dimensional fishbone model; setting the equivalent frame beams as elastic and setting elastoplastic properties for the equivalent frame columns, equivalent core tube columns, and equivalent connecting beams; and calibrating the elastoplastic characteristics of the target two-dimensional fishbone model after setting the elastoplastic properties to complete the establishment of the elastoplastic two-dimensional fishbone equivalent model. This method significantly reduces the time history analysis time for a single seismic wave, substantially reduces computational costs, and improves the speed of optimizing seismic reduction parameters.

Description

Technical Field

[0001] This invention relates to the field of equivalent model technology, and in particular to a two-dimensional fishbone equivalent model modeling method, apparatus, electronic device and storage medium. Background Technology

[0002] Optimization of damping parameters for elasto-plastic frame-core tube structures often employs three-dimensional refined finite element models for elasto-plastic time history analysis. This method requires calculating the structural response under numerous seismic motion conditions to select the optimal damping parameters. However, due to the nonlinearity of the structure, time history analysis for a single seismic wave condition typically takes more than 10 hours, and the large number of calculation conditions results in extremely high overall computational costs and low efficiency. Therefore, a simplified modeling method that maintains computational accuracy while significantly improving computational efficiency is urgently needed, thereby reducing computational costs and improving the efficiency of time history analysis. Summary of the Invention

[0003] In view of this, the purpose of this invention is to provide a two-dimensional fishbone equivalent modeling method, device, electronic device and storage medium. By establishing an elastoplastic two-dimensional fishbone equivalent model, the time history analysis time of a single seismic wave is greatly reduced, the computational cost is significantly reduced and the speed of seismic reduction parameter optimization is improved.

[0004] In a first aspect, embodiments of the present invention provide a two-dimensional fishbone equivalent model modeling method, comprising: in a preferred embodiment of the present invention, the above-mentioned merging of frame beams, frame columns, and connecting beams to obtain equivalent frame beams, equivalent frame columns, and equivalent connecting beams, including: retaining only the frame beams connecting the frame columns and the core tube and parallel to the vibration direction, ignoring the frame beams connecting the frame columns and the frame beams perpendicular to the vibration direction, and superimposing the cross-sectional areas and moments of inertia of all the retained frame beams on the same side of the core tube to form equivalent frame beams; ignoring the frame columns parallel to the plane of vibration direction, retaining only the frame columns outside the plane of vibration direction, and superimposing the cross-sectional areas and moments of inertia of all the retained frame columns on the same side of the core tube to form equivalent frame columns; retaining only the connecting beams parallel to the vibration direction, ignoring the connecting beams perpendicular to the vibration direction, and superimposing the cross-sectional areas and moments of inertia of all the retained connecting beams, and setting a vertical spring in the middle of the superimposed connecting beam and imparting shear stiffness to form equivalent connecting beams.

[0005] In a preferred embodiment of the present invention, the above-mentioned equivalent treatment of the core tube includes: retaining only one side of the core tube, applying a unit force in the same direction as the vibration direction to the top of the core tube; calculating the equivalent bending stiffness of the equivalent core tube column based on the displacement of the core tube apex; and setting rigid beams with a length of half the actual width of the single-sided core tube on both sides of the equivalent core tube column to retain the physical width of the core tube.

[0006] In a preferred embodiment of the present invention, the above-mentioned distribution of the mass of the floor slab to the equivalent frame beam and the rigid beam to generate a two-dimensional fishbone model includes: distributing the mass of the core tube floor slab evenly on the rigid beam and distributing the mass of the frame floor slab evenly on the equivalent frame beam to generate a two-dimensional fishbone model.

[0007] In a preferred embodiment of the present invention, the above-mentioned modal verification and error adjustment of the two-dimensional fishbone model until the error meets the preset threshold to obtain the target two-dimensional fishbone model includes: calculating the first three modal frequencies, mode shape amplitudes, and modal participation coefficients of the two-dimensional fishbone model and the refined finite element model respectively; if any one of the frequency error of the first three modal frequencies, the mode shape error of the mode shape amplitude, or the modal participation coefficient error of the modal participation coefficient exceeds the preset threshold, then the equivalent moment of inertia of the equivalent core column is adjusted until the preset threshold is met.

[0008] In a preferred embodiment of the present invention, the above-mentioned setting of elastoplastic properties for the equivalent frame column, equivalent core tube column and equivalent coupling beam includes: adopting a section-based restoring force model for the equivalent frame column and equivalent core tube column, and calibrating the key parameters of the hysteresis shape according to the bending moment-curvature relationship; and assigning the vertical spring of the equivalent coupling beam with a displacement-shear force curve relationship obtained from the reciprocating loading test.

[0009] In a preferred embodiment of the present invention, the target two-dimensional fishbone model with elastoplastic properties is calibrated using elastoplastic characteristics, including: determining the post-yield stiffness ratio of the equivalent core tube column, equivalent frame column, and equivalent coupling beam, as well as the standard acceleration response spectrum under minor and major earthquakes; determining the peak strength ratio of the equivalent core tube column, equivalent frame column, and equivalent coupling beam; performing composite modal pushover under multiple lateral force modes on the refined finite element model to obtain the normalized inter-story drift angle under minor and major earthquakes, calculating the damaged inter-story drift ratio, and determining the target control parameters; performing pushover on the target two-dimensional fishbone model using the same multiple lateral force modes, the same minor earthquake standard acceleration response spectrum, and the same major earthquake standard acceleration response spectrum as the refined finite element model to obtain the control parameters to be calibrated; if the error between the control parameters to be calibrated and the target control parameters exceeds the preset allowable range, the post-yield stiffness ratio and peak strength ratio are adjusted until the calibration requirements are met.

[0010] Secondly, embodiments of the present invention also provide a two-dimensional fishbone equivalent model modeling device, the device comprising: a fine finite element model acquisition module, used to acquire a fine finite element model of a three-dimensional elastoplastic frame-core tube structure; the fine finite element model includes frame beams, frame columns, connecting beams, a core tube, and floor slabs; a merging processing module, used to merge the frame beams, frame columns, and connecting beams to obtain equivalent frame beams, equivalent frame columns, and equivalent connecting beams; an equivalence processing module, used to perform equivalence processing on the core tube to obtain an equivalent core tube; the equivalent core tube includes: equivalent core tube columns and rigid beams; and a two-dimensional fishbone model generation device. The system comprises the following modules: a module for distributing the mass of the floor slab to the equivalent frame beams and rigid beams to generate a two-dimensional fishbone model; a module for modal verification and error adjustment for performing modal verification and error adjustment on the two-dimensional fishbone model until the error meets a preset threshold to obtain the target two-dimensional fishbone model; a module for setting elastic-plastic properties for the equivalent frame beams and setting elastic-plastic properties for the equivalent frame columns, equivalent core tube columns, and equivalent connecting beams; and a module for elastic-plastic feature calibration for calibrating the elastic-plastic features of the target two-dimensional fishbone model after setting the elastic-plastic properties, thus completing the establishment of the elastic-plastic two-dimensional fishbone equivalent model.

[0011] Thirdly, embodiments of the present invention also provide an electronic device, including a processor and a memory, wherein the memory stores computer-executable instructions that can be executed by the processor, and the processor executes the computer-executable instructions to implement the two-dimensional fishbone equivalent model modeling method of the first aspect described above.

[0012] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing computer-executable instructions. When the computer-executable instructions are invoked and executed by a processor, the computer-executable instructions cause the processor to implement the two-dimensional fishbone equivalent model modeling method of the first aspect described above.

[0013] The embodiments of the present invention bring the following beneficial effects: This invention provides a method, apparatus, electronic device, and storage medium for modeling a two-dimensional fishbone equivalent model. The method involves acquiring a refined finite element model of a three-dimensional elasto-plastic frame-core tube structure. This refined finite element model includes frame beams, frame columns, connecting beams, a core tube, and floor slabs. The frame beams, frame columns, and connecting beams are merged to obtain equivalent frame beams, equivalent frame columns, and equivalent connecting beams. The core tube is then processed to obtain an equivalent core tube, which includes equivalent core tube columns and rigid beams. The mass of the floor slabs is distributed to the equivalent frame beams and rigid beams to generate a two-dimensional fishbone model. Modal verification and error adjustment are performed on the two-dimensional fishbone model until the error meets a preset threshold, resulting in a target two-dimensional fishbone model. The equivalent frame beams are set to elasticity, and elasto-plastic properties are set for the equivalent frame columns, equivalent core tube columns, and equivalent connecting beams. The target two-dimensional fishbone model with these elasto-plastic properties is then calibrated using elasto-plastic features, completing the establishment of the elasto-plastic two-dimensional fishbone equivalent model. In this approach, the time for analyzing the time history of a single seismic wave is greatly reduced by establishing an elastoplastic two-dimensional fishbone equivalent model, which significantly reduces computational costs and improves the speed of optimizing seismic reduction parameters.

[0014] Other features and advantages of this disclosure will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the techniques described above.

[0015] To make the above-mentioned objects, features and advantages of this disclosure more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A flowchart illustrating a two-dimensional fishbone equivalent model modeling method provided in an embodiment of the present invention; Figure 2 This is an equivalent schematic diagram of a core tube provided in an embodiment of the present invention; Figure 3 A flowchart illustrating another two-dimensional fishbone equivalent model modeling method provided in this embodiment of the invention; Figure 4 This is a schematic diagram of the equivalent beam and column provided in an embodiment of the present invention; Figure 5 This is an equivalent schematic diagram of a coupling beam provided in an embodiment of the present invention; Figure 6 A flowchart illustrating another two-dimensional fishbone equivalent model modeling method provided in this embodiment of the invention; Figure 7 This is a schematic diagram of a two-dimensional fishbone equivalent modeling device provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions 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, 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.

[0019] Optimization of damping parameters for elasto-plastic frame-core tube structures often employs three-dimensional refined finite element models for elasto-plastic time history analysis. This method requires calculating the structural response under numerous seismic motion conditions to select the optimal damping parameters. However, due to the nonlinearity of the structure, time history analysis for a single seismic wave condition typically takes more than 10 hours, and the large number of calculation conditions results in extremely high overall computational costs and low efficiency. Therefore, a simplified modeling method that maintains computational accuracy while significantly improving computational efficiency is urgently needed, thereby reducing computational costs and improving the efficiency of time history analysis.

[0020] Based on this, the present invention provides a two-dimensional fishbone equivalent model modeling method, device, electronic device, and storage medium. This method involves acquiring a refined finite element model of a three-dimensional elasto-plastic frame-core tube structure. The refined finite element model includes frame beams, frame columns, connecting beams, a core tube, and floor slabs. The frame beams, frame columns, and connecting beams are merged to obtain equivalent frame beams, equivalent frame columns, and equivalent connecting beams. The core tube is then processed to obtain an equivalent core tube, which includes equivalent core tube columns and rigid beams. The mass of the floor slabs is distributed to the equivalent frame beams and rigid beams to generate a two-dimensional fishbone model. Modal verification and error adjustment are performed on the two-dimensional fishbone model until the error meets a preset threshold, resulting in a target two-dimensional fishbone model. The equivalent frame beams are set to elasticity, and elasto-plastic properties are set for the equivalent frame columns, equivalent core tube columns, and equivalent connecting beams. The target two-dimensional fishbone model with the elasto-plastic properties set is then calibrated for elasto-plastic characteristics, thus completing the establishment of the elasto-plastic two-dimensional fishbone equivalent model. In this approach, the time for analyzing the time history of a single seismic wave is greatly reduced by establishing an elastoplastic two-dimensional fishbone equivalent model, which significantly reduces computational costs and improves the speed of optimizing seismic reduction parameters.

[0021] To facilitate understanding of this embodiment, a detailed description of a two-dimensional fishbone equivalent modeling method disclosed in this embodiment of the invention will be provided first.

[0022] Example 1 This invention provides a method for modeling a two-dimensional fishbone equivalent model. Figure 1 This is a flowchart illustrating a two-dimensional fishbone equivalent modeling method provided in an embodiment of the present invention. Figure 1 As shown, the modeling method for this two-dimensional fishbone equivalent model may include the following steps: Step S101: Obtain a detailed finite element model of the three-dimensional elastoplastic frame-core tube structure.

[0023] The detailed finite element model includes: frame beams, frame columns, connecting beams, core tubes, and floor slabs.

[0024] The refined finite element model is the original model in the embodiments of this application, and all merging, equivalence and other processing are carried out on the basis of this model.

[0025] Among them, the refined finite element model of the three-dimensional elastoplastic frame-core tube structure refers to a high-precision three-dimensional structural model established using finite element software (such as ABAQUS and ETABS), which includes all beams, columns, connecting beams, core tube (the tube enclosed by shear walls), and floor slabs. This model can simulate the mechanical behavior of materials after they enter nonlinear (elastoplastic) behavior.

[0026] Frame beams and frame columns are linear structural members that bear vertical and horizontal loads. Frame beams connect frame columns or the core tube, while frame columns bear vertical loads.

[0027] Among them, the coupling beam is a short beam that connects two shear walls in the core tube and mainly bears shear force.

[0028] The core tube is a reinforced concrete tube located in the center of the building, enclosed by shear walls, which provides the main lateral stiffness.

[0029] The floor slab is a horizontal floor slab used to transfer loads and serve as a source of mass.

[0030] Step S102: The frame beams, frame columns, and connecting beams are merged to obtain equivalent frame beams, equivalent frame columns, and equivalent connecting beams.

[0031] Among them, the equivalent frame beam, equivalent frame column, and equivalent connecting beam are single equivalent components formed by superimposing multiple similar components in the three-dimensional model according to their stiffness, and are used in the two-dimensional model.

[0032] Step S103: Perform equivalent processing on the core tube to obtain an equivalent core tube.

[0033] The equivalent core tube may include: equivalent core tube columns and rigid beams. There are two equivalent core tube columns connected by a coupling beam.

[0034] The equivalent core tube is a combination of a three-dimensional core tube, which is simplified into a column with equivalent bending stiffness (equivalent core tube column) plus rigid beams on both sides.

[0035] Among them, a rigid beam is a hypothetical beam with extremely high stiffness, used to transmit force but without producing deformation.

[0036] Specifically, equivalent treatment of the core tube can include: retaining only one side of the core tube and applying a unit force in the same direction as the vibration direction to the top of the core tube; calculating the equivalent bending stiffness of the equivalent core tube column based on the displacement of the core tube apex; and setting rigid beams with a length of half the actual width of the single-sided core tube on both sides of the equivalent core tube column to retain the physical width of the core tube.

[0037] The equivalent core tube columns are arranged in pairs on the left and right sides and connected by equivalent connecting beams.

[0038] In this design, a single-sided core tube is created by cutting a three-dimensional core tube along its centerline, retaining only one side (such as the left side). Due to symmetry, half the stiffness of the single side constitutes the overall stiffness.

[0039] The unit force is a force of magnitude 1 (e.g., 1 N), used to calculate compliance.

[0040] Among them, the vertex displacement is the horizontal displacement of the top of the core tube under the action of a unit force.

[0041] Among them, the equivalent bending stiffness is to enable the core cylinder to have the same bending deformation capacity as the actual single-sided cylinder.

[0042] The length of the rigid beam is equal to half the actual width of the core tube on one side. For example, if the actual tube width is 8m, then the rigid beam is 4m long.

[0043] For ease of understanding, Figure 2 This is an equivalent schematic diagram of a core tube provided in an embodiment of the present invention.

[0044] Among them, such as Figure 2 As shown, in the refined finite element model, the core cylinder consists of two cylinders in the vibration direction, connected to the wall by a connecting beam. The core cylinder of the refined finite element model is processed and calculated as follows: only one side of the core cylinder is retained, and a unit force is applied to the top of the core cylinder, with the direction of the unit force consistent with the vibration direction, to obtain the displacement of the core cylinder's apex. The equivalent bending stiffness of the core column in the vibration direction is calculated using the following formula. : Where H is the core tube height. To preserve the physical width of the core tube, rigid beams with a length equal to half the actual width of the core tube need to be installed on both sides of the core tube column to simulate the physical width of the core tube.

[0045] Step S104: Distribute the mass of the floor slab to the equivalent frame beams and rigid beams respectively to generate a two-dimensional fishbone model.

[0046] Among them, the two-dimensional fishbone model is a simplified planar model that resembles a fishbone, with the core tube as the spine and the frame beams and connecting beams as fish bones.

[0047] Specifically, the mass of the floor slab is distributed to the equivalent frame beams and rigid beams respectively to generate a two-dimensional fishbone model. This can include: distributing the mass of the core tube floor slab evenly on the rigid beams and distributing the mass of the frame floor slab evenly on the equivalent frame beams to generate a two-dimensional fishbone model.

[0048] The mass of the core tube floor slab is half the area of ​​the floor slabs inside the core tube and the floor slabs around the core tube (distributed according to the load-bearing area), while the mass of the frame floor slab is the mass of the floor slabs in the remaining area.

[0049] Uniform distribution is achieved by dividing the total mass by the length, converting it into a line load (N / m) or a mass linear density (kg / m).

[0050] Step S105: Modal verification and error adjustment are performed on the two-dimensional fishbone model until the error meets the preset threshold to obtain the target two-dimensional fishbone model.

[0051] Among them, the preset threshold is the upper limit of error set according to the engineering accuracy requirements, such as 10% or 15%.

[0052] Specifically, modal verification and error adjustment are performed on the two-dimensional fishbone model until the error meets the preset threshold to obtain the target two-dimensional fishbone model. This may include: calculating the first three modal frequencies, mode shape amplitudes, and modal participation coefficients of the two-dimensional fishbone model and the refined finite element model respectively; if any of the frequency error of the first three modal frequencies, the mode shape error of the mode shape amplitude, or the modal participation coefficient error of the modal participation coefficient exceeds the preset threshold, then the equivalent moment of inertia of the equivalent core column is adjusted until the preset threshold is met.

[0053] The first three modal frequencies are the reciprocals (Hz) of the structure's first, second, and third natural periods. For high-rise buildings, the first modal frequency is translational, and the second modal frequency may be torsional or translational in another direction.

[0054] The mode amplitude is the relative displacement of each floor under a certain mode. It needs to be normalized before comparison, such as taking the top floor displacement as 1.

[0055] The modal participation factor reflects the degree to which a mode contributes to the seismic response.

[0056] Among them, the equivalent moment of inertia is the cross-sectional moment of inertia of the core tube equivalent column, which is the main variable for adjustment.

[0057] The preset threshold can be 10%.

[0058] Among them, frequency error The calculation method is as follows: ;in, To simplify the frequency of the m-th mode in the model, denoted as the frequency of the m-th mode in the refined finite element model.

[0059] Among them, mode shape error The calculation method is as follows: ;in, To simplify the amplitude of the i-th layer in the m-th mode, Let be the amplitude of the i-th layer in the m-th mode of the refined finite element model.

[0060] Among them, the modal participation coefficient error The calculation method is as follows: ;in, To simplify the calculation of the m-th modal participation coefficient in the model, the method is as follows: ,in, To simplify the frequency of the m-th mode in the model, M is the structural mass matrix. l It is a unit vector; The m-th modal participation factor of the refined finite element model is calculated as follows: ,in, Let M be the frequency of the m-th mode of the refined model, and M be the structural mass matrix. l It is a unit vector.

[0061] Step S106: Set the equivalent frame beam to elastic, and set the equivalent frame column, equivalent core tube column and equivalent coupling beam to elastic-plastic properties.

[0062] Among them, elastoplastic properties are the constitutive relations of a material after it enters the plastic state, such as the moment-curvature hysteresis curve and the force-displacement skeleton curve.

[0063] Specifically, setting elastoplastic properties for equivalent frame columns, equivalent core tube columns, and equivalent coupling beams may include: adopting a section-based restoring force model for the equivalent frame columns and equivalent core tube columns, and calibrating key parameters of the hysteresis shape according to the bending moment-curvature relationship; and assigning the vertical springs of the equivalent coupling beams a displacement-shear force curve relationship obtained from reciprocating loading tests.

[0064] Among them, the section-based restoring force model refers to using a fiber section model or a concentrated plastic hinge model to discretize the section into multiple concrete and steel reinforcement fibers, each fiber having an independent stress-strain constitutive model.

[0065] Among them, the moment-curvature relationship is the curve relating the bending moment borne by the section to the bending curvature, which can be obtained through section analysis software (such as XTRACT).

[0066] Key parameters of the hysteresis shape may include: pinching coefficient, stiffness degradation coefficient, and strength degradation coefficient, which are specifically calibrated through experiments.

[0067] Among them, the displacement-shear force curve relationship is the relationship between the shear force of the coupling beam and the relative displacement at both ends, which is usually a hysteresis loop with pinching effect.

[0068] In this study, since the frame beams suffered minimal damage during the earthquake, the equivalent frame beams of the target two-dimensional fishbone model were set as elastic to simplify calculations. The equivalent frame columns and core tube columns were modeled using a section-based method. The section-based restoring force model was directly obtained from the moment-curvature relationship obtained in the experiment. After calibration with the experimental results, the section-based restoring force model was directly applied to the column sections of the equivalent frame columns and equivalent core tube columns to simulate their elasto-plastic behavior. Since the coupling beams primarily exhibit shear deformation, the displacement-shear force curve relationship from the equivalent coupling beam reciprocating loading test was directly applied to the vertical springs to simulate their elasto-plastic phenomenon. The section-based restoring force model and experimental results only require calibration of key parameters related to the hysteresis shape; it is not necessary to calibrate bearing capacity parameters such as yield capacity and peak bearing capacity, or displacement parameters such as yield displacement and yield bearing capacity.

[0069] Step S107: Perform elastoplastic feature calibration on the target two-dimensional fishbone model after setting the elastoplastic properties to complete the establishment of the elastoplastic two-dimensional fishbone equivalent model.

[0070] Elastic-plastic characteristic calibration refers to adjusting model parameters through pushover analysis to make the macroscopic damage index of the simplified model consistent with that of the three-dimensional model.

[0071] The two-dimensional fishbone equivalent model modeling method provided in this embodiment of the invention can obtain a refined finite element model of a three-dimensional elastoplastic frame-core tube structure. The refined finite element model includes frame beams, frame columns, connecting beams, core tube, and floor slabs. The frame beams, frame columns, and connecting beams are merged to obtain equivalent frame beams, equivalent frame columns, and equivalent connecting beams. The core tube is then processed to obtain an equivalent core tube, which includes equivalent core tube columns and rigid beams. The mass of the floor slab is distributed to the equivalent frame beams and rigid beams respectively to generate a two-dimensional fishbone model. Modal verification and error adjustment are performed on the two-dimensional fishbone model until the error meets a preset threshold to obtain the target two-dimensional fishbone model. The equivalent frame beams are set to elasticity, and elastoplastic properties are set for the equivalent frame columns, equivalent core tube columns, and equivalent connecting beams. The target two-dimensional fishbone model with the elastoplastic properties set is then calibrated for elastoplastic features to complete the establishment of the elastoplastic two-dimensional fishbone equivalent model. In this approach, the time for analyzing the time history of a single seismic wave is greatly reduced by establishing an elastoplastic two-dimensional fishbone equivalent model, which significantly reduces computational costs and improves the speed of optimizing seismic reduction parameters.

[0072] Example 2 This invention also provides another two-dimensional fishbone equivalent model modeling method; this method is implemented based on the method in the above embodiments; this method focuses on describing the specific implementation of merging frame beams, frame columns and connecting beams to obtain equivalent frame beams, equivalent frame columns and equivalent connecting beams.

[0073] Figure 3 A flowchart of another two-dimensional fishbone equivalent modeling method provided in an embodiment of the present invention is shown below. Figure 3 As shown, the process of merging the frame beams, frame columns, and connecting beams to obtain equivalent frame beams, equivalent frame columns, and equivalent connecting beams can include the following steps: Step S201: Only retain the frame beams that connect the frame columns and the core tube and are parallel to the vibration direction, ignore the frame beams connecting the frame columns and the frame beams perpendicular to the vibration direction, and superimpose the cross-sectional areas and moments of inertia of all the retained frame beams on the same side of the core tube to form an equivalent frame beam.

[0074] For ease of understanding, Figure 4 This is a schematic diagram of the equivalent beam and column provided in an embodiment of the present invention.

[0075] Among them, such as Figure 4As shown, the frame beams in the refined finite element model are divided into two types: one type connects the frame columns, and the other type connects the frame columns and the core tube. The first type of frame beam contributes little stiffness, so its effect is ignored; only the stiffness contribution of the second type of frame beam is considered. In the second type of frame beam, the stiffness contribution of the beam perpendicular to the vibration direction is very small, so its stiffness contribution is ignored. The cross-sections of all the frame beams connecting the frame columns and the core tube on the left are merged to form a combined beam. The cross-sectional area and moment of inertia of the combined beam are the superposition of the corresponding cross-sectional properties of each frame beam. , ,in, The equivalent moment of inertia of the frame beam section in the simplified two-dimensional model. The moment of inertia of a single frame beam section in a refined finite element model. For the equivalent area of ​​the frame beam section in the simplified two-dimensional model, This represents the cross-sectional area of ​​a single frame beam in a refined finite element model. The frame beams connecting the frame columns and the core tube on the right side are treated similarly, and then the combined beams are arranged on both sides of the core tube in the vibration plane.

[0076] Step S202: Ignore the frame columns parallel to the plane of vibration direction, retain only the frame columns outside the plane of vibration direction, and superimpose the cross-sectional area and moment of inertia of all the retained frame columns on the same side of the core tube to form an equivalent frame column.

[0077] Among them, such as Figure 4 As shown, the core tube of the refined finite element model is surrounded by multiple frame columns that run through the entire height of the structure. Since the stiffness contribution of the frame columns arranged parallel to the vibration direction plane is small, their effect is neglected. In the simplified model, all the left-side frame column sections outside the vibration direction plane are merged to form a merged column. The cross-sectional area and moment of inertia of the merged column are the superposition of the corresponding cross-sectional properties of each frame column: Let... , .in, The equivalent moment of inertia of the column cross section in the simplified two-dimensional model. The moment of inertia of a single column section in a refined finite element model. The equivalent area of ​​the column cross-section in the simplified two-dimensional model. The cross-sectional area of ​​a single column in the refined finite element model is given. After the same treatment is applied to the right frame column, the frame column of the model is equivalent to two frame columns arranged in the vibration direction plane of the core tube. The two frame columns are located on both sides of the core tube in the vibration plane.

[0078] In step S203, only the connecting beams parallel to the vibration direction are retained, while the connecting beams perpendicular to the vibration direction are ignored. The cross-sectional areas and moments of inertia of all the retained connecting beams are superimposed. A vertical spring is set in the middle of the superimposed connecting beam and shear stiffness is given to form an equivalent connecting beam.

[0079] For ease of understanding, Figure 5 This is an equivalent schematic diagram of a coupling beam provided in an embodiment of the present invention.

[0080] Among them, such as Figure 5 As shown, the core tube shear wall in the refined finite element model is divided into two walls along the vibration direction, connected by a coupling beam. In the simplified model, all coupling beams outside the vibration direction plane are merged, and the cross-sectional area and moment of inertia of the "merged coupling beam" are the superposition of the corresponding cross-sectional properties of each coupling beam. Since the coupling beams mainly undergo shear deformation, a vertical spring is placed in the middle of the equivalent coupling beam, and the "merged coupling beam" is given shear stiffness. For coupling beams arranged perpendicular to the vibration direction, their stiffness contribution is very small and can be ignored.

[0081] Example 3 This invention also provides another method for modeling a two-dimensional fishbone equivalent model; this method is implemented based on the method in the above embodiments; this method focuses on describing the specific implementation of elastoplastic feature calibration of the target two-dimensional fishbone model after setting elastoplastic properties.

[0082] Figure 6 A flowchart of another two-dimensional fishbone equivalent model modeling method provided in the embodiments of the present invention is shown below. Figure 6 As shown, the process of elastoplastic feature calibration of the target two-dimensional fishbone model after setting its elastoplastic properties can include the following steps: Step S301: Determine the post-yield stiffness ratio of the equivalent core tube column, equivalent frame column, and equivalent coupling beam, as well as the code acceleration response spectrum under minor and major earthquakes.

[0083] Among them, the post-yield stiffness ratios of the equivalent core tube column, equivalent frame column, and equivalent coupling beam are respectively represented by... , and Indicates. Among them: , , in, The equivalent core tube section yields the bending stiffness. The initial bending stiffness of the equivalent core tube section, The equivalent frame column's cross-sectional bending stiffness after yielding. The initial bending stiffness of the equivalent frame column section is given. The shear stiffness after yielding of the equivalent coupling beam section. This represents the initial shear stiffness of the equivalent coupling beam section.

[0084] Among them, the standard acceleration response spectrum curves under minor and major earthquakes are selected according to the parameters of the acceleration response spectrum curves for frequent earthquakes (minor earthquakes) and rare earthquakes (major earthquakes) as specified in the "Code for Seismic Design of Buildings".

[0085] Step S302: Determine the peak strength ratio of the equivalent core tube column, equivalent frame column, and equivalent coupling beam.

[0086] Among them, the peak strength ratios of the equivalent core tube column, equivalent frame column, and equivalent coupling beam are respectively used as... , , express.

[0087] in, , , , The peak bending moment of the equivalent core tube section, For the equivalent core tube section yield moment, This represents the peak bending moment of the equivalent frame column section. The equivalent yield moment of the frame column section. For the peak shear force of the equivalent coupling beam section, This represents the yield shear force of the equivalent coupling beam section.

[0088] Step S303: Perform composite modal push-over on the refined finite element model under multiple lateral force modes to obtain the normalized inter-layer displacement angle under minor and major earthquakes, calculate the inter-layer displacement ratio under damage, and determine the target control parameters.

[0089] The composite modal push under four lateral force modes is performed using the following formulas:

[0090] in, Represented as the nth lateral force mode, the three mode shapes (the first, second, and third mode shapes of the structure) have different superposition directions, resulting in four superposition combination modes. F1, F2, F3, and F4 are four column vectors. For the earthquake considered, in the first Periodic The standard acceleration response spectrum at the location; Modal participation coefficient: ; in, It is a unit column vector. for Mode shape.

[0091] in, Contribute correction coefficients to the m-th mode: .

[0092] Calculate according to the following formula: ; In the formula, Let j be the floor quality. Let be the mass matrix of the structure.

[0093] The position of each node is as follows Horizontal forces were arranged according to the force distribution pattern, and then push-over was performed under the code acceleration response spectrum of minor earthquakes and the code acceleration response spectrum of major earthquakes, respectively. The push-over results were processed according to the following formula: First, define the normalized height: ; in: Let be the height of the i-th layer. This represents the maximum height of the structure. Then, the normalized inter-story drift angle is defined: ; in, Let be the inter-story drift angle of the i-th layer. This represents the maximum inter-story drift angle. To measure the degree of macroscopic structural damage, the damaged inter-story drift ratio is defined as: ; in, This represents the normalized elastic inter-story drift angle under minor earthquakes. This represents the normalized inter-story drift angle under a major earthquake. If the structure remains elastic under a major earthquake, then... When the structure is damaged under a major earthquake, then .

[0094] Therefore, the target control parameters are determined. , .

[0095] Step S304: The target two-dimensional fishbone model is pushed over using the same multiple lateral force modes, the same small earthquake gauge acceleration response spectrum and the same large earthquake gauge acceleration response spectrum as the fine finite element model to obtain the control parameters to be calibrated.

[0096] The same pushing method was used to push the two-dimensional fishbone equivalent model to obtain the control parameters to be calibrated. and .

[0097] Step S305: If the error between the control parameter to be calibrated and the target control parameter exceeds the preset allowable range, adjust the post-yield stiffness ratio and peak strength ratio until the calibration requirements are met.

[0098] Among them, if , If the elastic-plasticity calibration is completed, then the calibration is complete. If the requirements are not met, return to readjustment. , , , Until the calibration requirements are met.

[0099] Example 4 Corresponding to the above method embodiments, this invention provides a two-dimensional fishbone equivalent modeling device. Figure 7 This is a schematic diagram of a two-dimensional fishbone equivalent modeling device provided in an embodiment of the present invention, as shown below. Figure 7 As shown, the two-dimensional fishbone equivalent modeling device may include: The fine finite element model acquisition module 401 is used to acquire a fine finite element model of a three-dimensional elastoplastic frame-core tube structure; the fine finite element model includes frame beams, frame columns, connecting beams, core tube, and floor slabs.

[0100] The merging processing module 402 is used to merge frame beams, frame columns and connecting beams to obtain equivalent frame beams, equivalent frame columns and equivalent connecting beams.

[0101] The equivalent processing module 403 is used to perform equivalent processing on the core tube to obtain an equivalent core tube; the equivalent core tube includes: equivalent core tube columns and rigid beams.

[0102] The two-dimensional fishbone model generation module 404 is used to distribute the mass of the floor slab to the equivalent frame beams and rigid beams respectively, and generate a two-dimensional fishbone model.

[0103] The modal verification and error adjustment module 405 is used to perform modal verification and error adjustment on the two-dimensional fishbone model until the error meets the preset threshold to obtain the target two-dimensional fishbone model.

[0104] The elastoplastic property setting module 406 is used to set the equivalent frame beam as elastic and to set the elastoplastic properties for the equivalent frame column, equivalent core tube column and equivalent coupling beam.

[0105] The elastoplastic feature calibration module 407 is used to calibrate the elastoplastic features of the target two-dimensional fishbone model after setting elastoplastic properties, and to complete the establishment of the elastoplastic two-dimensional fishbone equivalent model.

[0106] The two-dimensional fishbone equivalent model modeling device provided in this embodiment of the invention can obtain a refined finite element model of a three-dimensional elastoplastic frame-core tube structure. The refined finite element model includes frame beams, frame columns, connecting beams, core tube, and floor slabs. The frame beams, frame columns, and connecting beams are merged to obtain equivalent frame beams, equivalent frame columns, and equivalent connecting beams. The core tube is then processed to obtain an equivalent core tube, which includes equivalent core tube columns and rigid beams. The mass of the floor slab is distributed to the equivalent frame beams and rigid beams respectively to generate a two-dimensional fishbone model. Modal verification and error adjustment are performed on the two-dimensional fishbone model until the error meets a preset threshold to obtain the target two-dimensional fishbone model. The equivalent frame beams are set to elasticity, and elastoplastic properties are set for the equivalent frame columns, equivalent core tube columns, and equivalent connecting beams. The target two-dimensional fishbone model with the elastoplastic properties set is then calibrated for elastoplastic features to complete the establishment of the elastoplastic two-dimensional fishbone equivalent model. In this approach, the time for analyzing the time history of a single seismic wave is greatly reduced by establishing an elastoplastic two-dimensional fishbone equivalent model, which significantly reduces computational costs and improves the speed of optimizing seismic reduction parameters.

[0107] In some embodiments, the merging processing module is further configured to retain only the frame beams connecting the frame columns and the core tube and parallel to the vibration direction, ignore the frame beams connecting the frame columns and the frame beams perpendicular to the vibration direction, and superimpose the cross-sectional areas and moments of inertia of all the retained frame beams on the same side of the core tube to form an equivalent frame beam; ignore the frame columns parallel to the vibration direction plane, retain only the frame columns outside the vibration direction plane, and superimpose the cross-sectional areas and moments of inertia of all the retained frame columns on the same side of the core tube to form an equivalent frame column; retain only the connecting beams parallel to the vibration direction, ignore the connecting beams perpendicular to the vibration direction, and superimpose the cross-sectional areas and moments of inertia of all the retained connecting beams, and set a vertical spring in the middle of the superimposed connecting beam and impart shear stiffness to form an equivalent connecting beam.

[0108] In some embodiments, the equivalent processing module is further configured to retain only one side of the core tube, apply a unit force in the same direction as the vibration direction to the top of the core tube; calculate the equivalent bending stiffness of the equivalent core tube column based on the displacement of the core tube apex; and set rigid beams with a length of half the actual width of the single-sided core tube on both sides of the equivalent core tube column to retain the physical width of the core tube.

[0109] In some embodiments, the two-dimensional fishbone model generation module is further used to distribute the mass of the core tube floor slab evenly on the rigid beam and the mass of the frame floor slab evenly on the equivalent frame beam to generate a two-dimensional fishbone model.

[0110] In some embodiments, the modal verification and error adjustment module is further used to calculate the first three modal frequencies, mode shape amplitudes, and modal participation coefficients of the two-dimensional fishbone model and the refined finite element model, respectively; if any one of the frequency error of the first three modal frequencies, the mode shape error of the mode shape amplitude, or the modal participation coefficient error of the modal participation coefficient exceeds a preset threshold, then the equivalent moment of inertia of the equivalent core column is adjusted until the preset threshold is met.

[0111] In some embodiments, the elastoplastic property setting module is further configured to adopt a section-based restoring force model for the equivalent frame column and the equivalent core tube column, and calibrate the key parameters of the hysteresis shape according to the bending moment-curvature relationship; and assign the vertical spring of the equivalent coupling beam a displacement-shear force curve relationship obtained from the reciprocating loading test.

[0112] In some embodiments, the elastoplastic characteristic calibration module is further used to determine the post-yield stiffness ratio of the equivalent core tube column, equivalent frame column, and equivalent coupling beam, as well as the specification acceleration response spectrum under minor and major earthquakes; determine the peak strength ratio of the equivalent core tube column, equivalent frame column, and equivalent coupling beam; perform composite modal pushover under multiple lateral force modes on the refined finite element model to obtain the normalized inter-story drift angle under minor and major earthquakes, calculate the damaged inter-story drift ratio, and determine the target control parameters; perform pushover on the target two-dimensional fishbone model using the same multiple lateral force modes, the same minor earthquake specification acceleration response spectrum, and the same major earthquake specification acceleration response spectrum as the refined finite element model to obtain the control parameters to be calibrated; if the error between the control parameters to be calibrated and the target control parameters exceeds the preset allowable range, adjust the post-yield stiffness ratio and peak strength ratio until the calibration requirements are met.

[0113] The device provided in this embodiment of the invention has the same implementation principle and technical effect as the aforementioned method embodiment. For the sake of brevity, any parts not mentioned in the device embodiment can be referred to the corresponding content in the aforementioned method embodiment.

[0114] Example 5 This invention also provides an electronic device for running the above-described two-dimensional fishbone equivalent model modeling method; see [link to related documentation]. Figure 8 The diagram shows the structure of an electronic device, which includes a memory 500 and a processor 501. The memory 500 is used to store one or more computer instructions, which are executed by the processor 501 to implement the above-mentioned two-dimensional fishbone equivalent model modeling method.

[0115] Furthermore, Figure 8 The electronic device shown also includes a bus 502 and a communication interface 503. The processor 501, the communication interface 503 and the memory 500 are connected via the bus 502.

[0116] The memory 500 may include high-speed random access memory (RAM) and may also include non-volatile memory, such as at least one disk storage device. Communication between this system network element and at least one other network element is achieved through at least one communication interface 503 (which can be wired or wireless), such as the Internet, wide area network, local area network, metropolitan area network, etc. The bus 502 can be an ISA bus, PCI bus, or EISA bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 8 The symbol is represented by a single double-headed arrow, but this does not mean that there is only one bus or one type of bus.

[0117] Processor 501 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of processor 501 or by instructions in software form. Processor 501 can be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this invention. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this invention can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor. The software module can reside in a readily available storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory 500, and processor 501 reads information from memory 500 and, in conjunction with its hardware, completes the steps of the method described in the foregoing embodiments.

[0118] This invention also provides a computer-readable storage medium storing computer-executable instructions. When these computer-executable instructions are called and executed by a processor, they cause the processor to implement the above-described two-dimensional fishbone equivalent model modeling method. For specific implementation details, please refer to the method embodiments, which will not be repeated here.

[0119] The computer program product for modeling a two-dimensional fishbone equivalent model provided in this embodiment of the invention includes a computer-readable storage medium storing non-volatile program code executable by a processor. The instructions included in the program code can be used to execute the methods described in the preceding method embodiments. For specific implementation details, please refer to the method embodiments, which will not be repeated here.

[0120] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0121] In the several embodiments provided by this invention, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the coupling or direct coupling or communication connection shown or discussed may be through some communication interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0122] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0123] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0124] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a processor-executable, non-volatile, computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0125] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for modeling a two-dimensional fishbone equivalent model, characterized in that, The method includes: Obtain a detailed finite element model of a three-dimensional elastoplastic frame-core tube structure; the detailed finite element model includes frame beams, frame columns, connecting beams, core tube, and floor slabs; The frame beams, frame columns, and connecting beams are combined to obtain equivalent frame beams, equivalent frame columns, and equivalent connecting beams. The core tube is subjected to equivalent processing to obtain an equivalent core tube; the equivalent core tube includes: equivalent core tube columns and rigid beams; The mass of the floor slab is distributed to the equivalent frame beam and the rigid beam respectively, generating a two-dimensional fishbone model; Modal verification and error adjustment are performed on the two-dimensional fishbone model until the error meets the preset threshold to obtain the target two-dimensional fishbone model; The equivalent frame beam is set to elastic, and the equivalent frame column, the equivalent core tube column and the equivalent connecting beam are set to elastic-plastic properties; Elastic-plastic feature calibration is performed on the target two-dimensional fishbone model after setting elastic-plastic properties, and the equivalent model of elastic-plastic two-dimensional fishbone is established.

2. The method according to claim 1, characterized in that, The process of merging the frame beams, frame columns, and connecting beams to obtain equivalent frame beams, equivalent frame columns, and equivalent connecting beams includes: Only the frame beams that connect the frame columns and the core tube and are parallel to the vibration direction are retained, while the frame beams connecting the frame columns and the frame beams perpendicular to the vibration direction are ignored. The cross-sectional areas and moments of inertia of all the retained frame beams on the same side of the core tube are superimposed to form the equivalent frame beam. Ignore the frame columns parallel to the plane of vibration direction, retain only the frame columns outside the plane of vibration direction, and superimpose the cross-sectional areas and moments of inertia of all the retained frame columns on the same side of the core tube to form the equivalent frame column; Only the connecting beams parallel to the vibration direction are retained, while the connecting beams perpendicular to the vibration direction are ignored. The cross-sectional areas and moments of inertia of all the retained connecting beams are superimposed. A vertical spring is set in the middle of the superimposed connecting beam and shear stiffness is given to form the equivalent connecting beam.

3. The method according to claim 1, characterized in that, The equivalent treatment of the core tube includes: Only one side of the core tube is retained, and a unit force in the same direction as the vibration direction is applied to the top of the core tube; The equivalent bending stiffness of the core tube column is calculated based on the displacement of the core tube apex. Rigid beams with a length equal to half the actual width of the core tube on each side of the equivalent core tube column are installed to preserve the physical width of the core tube.

4. The method according to claim 1, characterized in that, The step of distributing the mass of the floor slab to the equivalent frame beam and the rigid beam respectively, and generating a two-dimensional fishbone model, includes: The mass of the core tube floor slab is evenly distributed on the rigid beam, and the mass of the frame floor slab is evenly distributed on the equivalent frame beam to generate a two-dimensional fishbone model.

5. The method according to claim 1, characterized in that, The process of performing modal verification and error adjustment on the two-dimensional fishbone model until the error meets a preset threshold to obtain the target two-dimensional fishbone model includes: Calculate the first three modal frequencies, mode amplitudes, and modal participation coefficients of the two-dimensional fishbone model and the refined finite element model, respectively. If any of the frequency error of the first three modal frequencies, the mode shape error of the mode shape amplitude, or the mode participation coefficient error of the mode participation coefficient exceeds the preset threshold, then the equivalent moment of inertia of the equivalent core column is adjusted until the preset threshold is met.

6. The method according to claim 1, characterized in that, The step of setting elastic-plastic properties for the equivalent frame column, the equivalent core tube column, and the equivalent coupling beam includes: The equivalent frame column and the equivalent core tube column are modeled using a section-based restoring force model, and the key parameters of the hysteresis shape are calibrated according to the relationship between bending moment and curvature. The vertical spring of the equivalent coupling beam is given a displacement-shear force curve relationship obtained from the reciprocating loading test.

7. The method according to claim 1, characterized in that, The process of calibrating the elastic-plastic features of the target two-dimensional fishbone model after setting its elastic-plastic properties includes: Determine the post-yield stiffness ratios of the equivalent core tube column, equivalent frame column, and equivalent coupling beam, as well as the code acceleration response spectra under minor and major earthquakes. Determine the peak strength ratio of the equivalent core tube column, equivalent frame column, and equivalent coupling beam; The refined finite element model is subjected to composite modal push-over under multiple lateral force modes to obtain the normalized inter-layer displacement angle under minor and major earthquakes, calculate the inter-layer displacement ratio under damage, and determine the target control parameters. The target two-dimensional fishbone model is overlaid using the same multiple lateral force modes, the same small earthquake gauge acceleration response spectrum, and the same large earthquake gauge acceleration response spectrum as the fine finite element model to obtain the control parameters to be calibrated. If the error between the control parameter to be calibrated and the target control parameter exceeds the preset allowable range, the post-yield stiffness ratio and the peak strength ratio are adjusted until the calibration requirements are met.

8. A two-dimensional fishbone equivalent modeling device, characterized in that, The device includes: The fine finite element model acquisition module is used to acquire a fine finite element model of a three-dimensional elastoplastic frame-core tube structure; the fine finite element model includes frame beams, frame columns, connecting beams, core tube, and floor slabs; The merging processing module is used to merge the frame beam, the frame column and the connecting beam to obtain equivalent frame beam, equivalent frame column and equivalent connecting beam; An equivalent processing module is used to perform equivalent processing on the core tube to obtain an equivalent core tube; the equivalent core tube includes: an equivalent core tube column and a rigid beam; A two-dimensional fishbone model generation module is used to distribute the mass of the floor slab to the equivalent frame beam and the rigid beam respectively, and generate a two-dimensional fishbone model. The modal verification and error adjustment module is used to perform modal verification and error adjustment on the two-dimensional fishbone model until the error meets the preset threshold to obtain the target two-dimensional fishbone model. The elastic-plastic property setting module is used to set the equivalent frame beam as elastic and to set elastic-plastic properties for the equivalent frame column, the equivalent core tube column and the equivalent connecting beam; The elastoplastic feature calibration module is used to calibrate the elastoplastic features of the target two-dimensional fishbone model after setting elastoplastic properties, and to complete the establishment of the equivalent elastoplastic two-dimensional fishbone model.

9. An electronic device, characterized in that, It includes a processor and a memory, the memory storing computer-executable instructions that can be executed by the processor, the processor executing the computer-executable instructions to implement the two-dimensional fishbone equivalent model modeling method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when invoked and executed by a processor, cause the processor to implement the two-dimensional fishbone equivalent model modeling method according to any one of claims 1 to 7.

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