Method and device for establishing inter-story drift angle prediction model of shear wall seismic resistance layer

Abstract

This invention discloses a method and apparatus for establishing a seismic inter-story drift angle prediction model for shear walls. The method includes the following steps: conducting push-over tests on shear wall specimens, recording the actual push-over test phenomena, and obtaining the actual specimen height and actual top displacement of the shear wall specimens under corresponding loads; determining the corresponding actual inter-story drift angle of the shear wall based on the actual specimen height and actual top displacement, and plotting the first lateral force-inter-story drift angle curve; determining the actual inter-story drift angle corresponding to the typical characteristic load of the shear wall based on the push-over test phenomena and / or the first lateral force-inter-story drift angle curve; establishing a finite element model corresponding to the shear wall specimen; extending the finite element model using preset shear wall parameters to generate an extended finite element model; performing simulation analysis on the shear wall specimen using the extended finite element model, and establishing a corresponding inter-story drift angle prediction model based on the simulation analysis results and the actual inter-story drift angle.

Description

Technical Field

[0001] This invention relates to the field of seismic design of buildings, specifically to a method and apparatus for establishing a seismic inter-story drift angle prediction model for shear walls. Background Technology

[0002] Currently, the international seismic design of low-rise reinforced concrete shear walls still adopts a design method based on seismic (shear) bearing capacity. This method cannot achieve seismic design of low-rise reinforced concrete shear walls based on displacement and performance, nor can it achieve quantitative prediction of the inter-story drift angle of low-rise reinforced concrete shear walls or quantitative evaluation of the seismic performance of shear walls.

[0003] Existing patent CN107085640A discloses a simulation algorithm for an unstiffened steel plate shear wall with an arc-shaped notch. This algorithm includes the following steps: designing multiple unstiffened steel plate shear wall specimens with arc-shaped notches of different sizes; establishing specimen models in finite element software; analyzing and obtaining the proportion of vertical load borne by the embedded steel plate under vertical load, the lateral bearing capacity of the embedded steel plate under horizontal load, and the lateral bearing capacity of the embedded steel plate under both horizontal and vertical loads; plotting the relationship curve between the vertical load proportion and the deflection of the frame beam; plotting the relationship curve between the lateral bearing capacity of the embedded steel plate and the inter-story drift angle; plotting the relationship curve between the lateral bearing capacity of the embedded steel plate and the inter-story drift angle under vertical load; calculating the reduction rate of the elastic lateral bearing capacity of the embedded steel plate under vertical load based on the elastic lateral bearing capacity; and obtaining the range of the ratio of the arc length of the arc-shaped notch to its span and the range of the arc height.

[0004] Existing patent CN115017591A discloses a method for evaluating the seismic performance of building structure groups. This method acquires structural geometric information through remote sensing technology, inputs exterior images of buildings into a structural type identification model to identify the building's structural type, transforms surveyable information into hidden information about the structure's interior through fuzzy reasoning, generates ground motion data based on site category, and constructs a ground motion field model for the target area. Seismic response analysis is performed on individual buildings within the target area, and the obtained seismic responses are input into a trained maximum inter-story drift angle prediction model to predict the maximum inter-story drift angle of each individual building. Finally, the method combines individual building damage indicators to assess the structural damage level, ultimately achieving the prediction of seismic damage distribution within the target area for building structure groups.

[0005] As can be seen from the above, neither of the two existing patents has achieved quantitative prediction of the inter-story drift angle of shear walls or quantitative evaluation of the seismic performance of shear walls. Summary of the Invention

[0006] Based on the above-mentioned technical problems, this invention proposes a method and apparatus for establishing a seismic inter-story drift angle prediction model for shear walls, which solves the problem that existing design methods based on seismic bearing capacity cannot achieve quantitative prediction of the seismic inter-story drift angle of shear walls and quantitative evaluation of the seismic performance of shear walls.

[0007] To achieve the above objectives, this invention proposes a method for establishing a seismic inter-story drift angle prediction model for shear walls.

[0008] A method for establishing a seismic inter-story drift angle prediction model for shear walls, the method comprising:

[0009] Push-over tests were conducted on shear wall specimens, and the actual push-over test phenomena were recorded. The actual specimen height and actual top displacement of the shear wall specimens under the corresponding loads were obtained.

[0010] Based on the actual specimen height and actual top displacement, determine the corresponding actual inter-story drift angle of the shear wall, and plot the first lateral force-inter-story drift angle curve;

[0011] Based on actual pushover test phenomena and / or the first lateral force-inter-story drift angle curve, the actual inter-story drift angle corresponding to the typical characteristic load of the shear wall is determined. The actual inter-story drift angle includes the actual cracked inter-story drift angle, the actual yield inter-story drift angle, and the actual ultimate inter-story drift angle.

[0012] Establish the finite element model corresponding to the shear wall specimen;

[0013] The finite element model is extended using preset shear wall parameters to generate an extended finite element model.

[0014] The shear wall specimen was simulated and analyzed using the extended finite element model. Based on the simulation analysis results and the actual cracked inter-story drift angle, the actual yield inter-story drift angle, and the actual ultimate inter-story drift angle, the corresponding cracked inter-story drift angle prediction models, yield inter-story drift angle prediction models, and ultimate inter-story drift angle prediction models were established respectively.

[0015] Furthermore, push-over tests were conducted on the shear wall specimens, and the actual push-over test phenomena were recorded. The actual specimen height and actual top displacement of the shear wall specimens under the corresponding loads were obtained, including: applying a preset horizontal reciprocating load to the shear wall specimens and recording the actual specimen height and actual top displacement of the shear wall specimens under the corresponding loads.

[0016] Furthermore, based on the actual specimen height and actual top displacement, the corresponding actual inter-story drift angle of the shear wall is determined, and the first lateral force-inter-story drift angle curve is plotted, including:

[0017] Based on the actual specimen height and actual top displacement, the actual inter-story drift angle of the shear wall under the corresponding load is determined using Formula 1. Formula 1 Where θ is the inter-story drift angle of the shear wall, Δu is the top displacement, and h is the specimen height;

[0018] Based on the actual inter-story drift angle of the shear wall under the corresponding load, the first lateral force-inter-story drift angle curve is plotted.

[0019] Furthermore, the push-over test phenomena include the cracking damage distribution and failure state of the shear wall. A finite element model of the shear wall specimen is established, including:

[0020] Establish an initial finite element model, which includes initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters;

[0021] The push-over test of the shear wall specimen was simulated using finite element analysis software. The simulated push-over test phenomena were recorded and the second lateral force-inter-story drift angle curve was obtained.

[0022] Based on the first lateral force-inter-story drift angle curve, the initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters are adjusted so that the similarity between the second lateral force-inter-story drift angle curve and the first lateral force-inter-story drift angle curve is within a preset similarity range.

[0023] And / or, based on the actual shear wall failure state, adjust the initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters to make the simulated shear wall failure state consistent with the actual shear wall failure state;

[0024] And / or, based on the actual shear wall cracking damage distribution, adjust the initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters to make the simulated shear wall cracking damage distribution consistent with the actual shear wall cracking damage distribution.

[0025] Furthermore, the preset shear wall parameters include: the similarity ratio of the finite element model specimen and the prototype wall dimensions, the shear span ratio, the axial compression ratio, the reinforcement ratio, the axial compressive strength of concrete, and the yield strength of steel reinforcement. The preset shear wall parameters are used to extend the finite element model, generating an extended finite element model, including:

[0026] Adjust at least one of the preset shear wall parameters to expand the finite element model, and determine the cracking inter-story drift angle, yield inter-story drift angle, and ultimate inter-story drift angle of the expanded finite element model.

[0027] Furthermore, the extended finite element model was used to simulate and analyze the shear wall specimens. Based on the simulation analysis results and the actual cracked inter-story drift angle, a corresponding cracked inter-story drift angle prediction model was established, including:

[0028] Based on the cracked inter-story drift angles of the extended finite element model and the actual cracked inter-story drift angles, a prediction model for the cracked inter-story drift angles of shear walls is established using a multivariate nonlinear regression fitting method and based on the least squares method.

[0029]

[0030] Where, θ x f is the interlayer displacement angle of the cracked layer. cu,k λ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, α ranges from 0.1 to 1, and β ranges from 0.01 to 0.1.

[0031] Furthermore, the extended finite element model was used to simulate and analyze the shear wall specimens. Based on the simulation analysis results and the actual yield inter-story drift angle, a yield inter-story drift angle prediction model was established, including:

[0032] Based on the yield inter-story drift angle of the extended finite element model and the actual yield inter-story drift angle, a prediction model for the yield inter-story drift angle of the shear wall is established using a multivariate nonlinear regression fitting method and based on the least squares method.

[0033]

[0034] Where, θ y f is the interlayer displacement angle at yield. cu,k λ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, f y ρ is the yield strength of the steel reinforcement. se The reinforcement ratio is γ, which ranges from 1 to 2, and ε, which ranges from 0.1 to 1.

[0035] Furthermore, the extended finite element model was used to simulate and analyze the shear wall specimens. Based on the simulation analysis results and the actual ultimate inter-story drift angle, a prediction model for the corresponding ultimate inter-story drift angle was established, including:

[0036] Based on the ultimate inter-story drift angles of the extended finite element model and the actual ultimate inter-story drift angles, a prediction model for the ultimate inter-story drift angles of shear walls is established using a multivariate nonlinear regression fitting method and based on the least squares method.

[0037]

[0038] Where, θ u f is the ultimate inter-story drift angle. cu,kλ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, f y ρ is the yield strength of the steel reinforcement. se The reinforcement ratio is μ, which ranges from 2 to 3, and δ, which ranges from 0.1 to 1.

[0039] To achieve the same objective as the methods described above, this invention also proposes a device for establishing a prediction model of inter-story drift angle for shear walls in seismic resistance.

[0040] A device for establishing a seismic inter-story drift angle prediction model for shear walls, the device comprising:

[0041] The test module is used to conduct push-over tests on shear wall specimens, record the actual push-over test phenomena, and obtain the actual specimen height and actual top displacement of the shear wall specimens under the corresponding loads.

[0042] The first determination module is used to determine the corresponding actual inter-story drift angle of the shear wall based on the actual specimen height and actual top displacement, and to plot the first lateral force-inter-story drift angle curve.

[0043] The second determining module is used to determine the actual inter-story drift angle corresponding to the typical characteristic load of the shear wall based on the actual pushover test phenomena and / or the first lateral force-inter-story drift angle curve. The actual inter-story drift angle includes the actual cracked inter-story drift angle, the actual yield inter-story drift angle, and the actual ultimate inter-story drift angle.

[0044] A module is created to build the finite element model corresponding to the shear wall specimen;

[0045] The extension module is used to extend the finite element model using preset shear wall parameters to generate an extended finite element model.

[0046] The simulation module is used to perform simulation analysis on shear wall specimens using an extended finite element model. Based on the simulation analysis results and the actual cracked inter-story drift angle, the actual yield inter-story drift angle, and the actual ultimate inter-story drift angle, corresponding cracked inter-story drift angle prediction models, yield inter-story drift angle prediction models, and ultimate inter-story drift angle prediction models are established respectively.

[0047] Furthermore, the test module is used to: apply a preset horizontal reciprocating load to the shear wall specimen and record the actual specimen height and actual top displacement of the shear wall specimen under the corresponding load.

[0048] Furthermore, the first determining module is used for:

[0049] Based on the actual specimen height and actual top displacement, the actual inter-story drift angle of the shear wall under the corresponding load is determined using Formula 1. Formula 1 Where θ is the inter-story drift angle of the shear wall, Δu is the top displacement, and h is the specimen height;

[0050] Based on the actual inter-story drift angle of the shear wall under the corresponding load, the first lateral force-inter-story drift angle curve is plotted.

[0051] Furthermore, modules are created for:

[0052] Establish an initial finite element model, which includes initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters;

[0053] The push-over test of the shear wall specimen was simulated using finite element analysis software. The simulated push-over test phenomena were recorded and the second lateral force-inter-story drift angle curve was obtained.

[0054] Based on the first lateral force-inter-story drift angle curve, the initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters are adjusted so that the similarity between the second lateral force-inter-story drift angle curve and the first lateral force-inter-story drift angle curve is within a preset similarity range.

[0055] And / or, based on the actual shear wall failure state, adjust the initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters to make the simulated shear wall failure state consistent with the actual shear wall failure state;

[0056] And / or, based on the actual shear wall cracking damage distribution, adjust the initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters to make the simulated shear wall cracking damage distribution consistent with the actual shear wall cracking damage distribution.

[0057] Furthermore, the preset shear wall parameters include: the similarity ratio of the finite element model specimen and the prototype wall dimensions, the shear span ratio, the axial compression ratio, the reinforcement ratio, the axial compressive strength of concrete, and the yield strength of steel reinforcement. The extended module is used for:

[0058] Adjust at least one of the preset shear wall parameters to expand the finite element model, and determine the cracking inter-story drift angle, yield inter-story drift angle, and ultimate inter-story drift angle of the expanded finite element model.

[0059] Furthermore, the simulation module is used for:

[0060] Based on the cracked inter-story drift angles of the extended finite element model and the actual cracked inter-story drift angles, a prediction model for the cracked inter-story drift angles of shear walls is established using a multivariate nonlinear regression fitting method and based on the least squares method.

[0061]

[0062] Where, θ x f is the interlayer displacement angle of the cracked layer. cu,k λ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, α ranges from 0.1 to 1, and β ranges from 0.01 to 0.1.

[0063] Furthermore, the simulation module is used for:

[0064] Based on the yield inter-story drift angle of the extended finite element model and the actual yield inter-story drift angle, a prediction model for the yield inter-story drift angle of the shear wall is established using a multivariate nonlinear regression fitting method and based on the least squares method.

[0065]

[0066] Where, θ y f is the interlayer displacement angle at yield. cu,k λ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, f y ρ is the yield strength of the steel reinforcement. se The reinforcement ratio is γ, which ranges from 1 to 2, and ε, which ranges from 0.1 to 1.

[0067] Furthermore, the simulation module is used for:

[0068] Based on the ultimate inter-story drift angles of the extended finite element model and the actual ultimate inter-story drift angles, a prediction model for the ultimate inter-story drift angles of shear walls is established using a multivariate nonlinear regression fitting method and based on the least squares method.

[0069]

[0070] Where, θ u f is the ultimate inter-story drift angle. cu,k λ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, f y ρ is the yield strength of the steel reinforcement. se The reinforcement ratio is μ, which ranges from 2 to 3, and δ, which ranges from 0.1 to 1.

[0071] Based on the above technical solution, the present invention has at least the following beneficial effects:

[0072] 1. Based on multiple physical tests and finite element numerical simulation studies of shear walls, this invention uses multivariate nonlinear regression fitting and least squares fitting to obtain the corresponding seismic inter-story drift angle prediction model for shear walls. From three performance indicators—cracking inter-story drift angle, yield inter-story drift angle, and ultimate inter-story drift angle—it achieves quantitative prediction of the seismic inter-story drift angle of shear walls. This model can be used for quantitative evaluation of the seismic performance of shear walls and can correctly guide relevant engineering practices.

[0073] 2. This invention extends the finite element model by adjusting the shear wall parameters and determines the cracking inter-story drift angle, yielding inter-story drift angle, and ultimate inter-story drift angle of the extended finite element model. Finally, the inter-story drift angle obtained from the model and the inter-story drift angle obtained from physical experiments are combined to fit the corresponding inter-story drift angle prediction model. This makes the inter-story drift angle prediction model proposed in this invention have high accuracy and can meet the quantitative prediction requirements of the seismic inter-story drift angle of shear walls. Attached Figure Description

[0074] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0075] Figure 1 This is a flowchart illustrating a method for establishing a seismic-resistant inter-story drift angle prediction model for shear walls, according to an embodiment of the present invention.

[0076] Figure 2 This is a shear wall lateral force-displacement curve in one embodiment of the present invention;

[0077] Figure 3 This is a schematic diagram illustrating the influence of the similarity ratio parameter of the finite element model specimen and the prototype wall dimensions on the inter-story drift angle of the seismic-resistant low shear wall in a specific embodiment of the present invention.

[0078] Figure 4 This is a schematic diagram illustrating the influence of the similarity ratio parameter of the finite element model specimen and the prototype wall size on the inter-story drift angle of the seismic-resistant low shear wall after adjusting the shear span ratio in a specific embodiment of the present invention.

[0079] Figure 5 This is a schematic diagram illustrating the influence of the similarity ratio parameter of the finite element model specimen and the prototype wall size on the inter-story drift angle of the low shear wall after adjusting the shear span ratio, as shown in another specific embodiment of the present invention.

[0080] Figure 6 This is a graph showing the influence of axial compression ratio on the inter-story drift angle of a low-profile shear wall in a specific embodiment of the present invention.

[0081] Figure 7 This is a graph showing the inter-story drift angle of a low shear wall as a function of axial compression ratio after adjusting the steel reinforcement ratio and specimen size in a specific embodiment of the present invention.

[0082] Figure 8 This is a graph showing the inter-story drift angle of a low shear wall as a function of axial compression ratio after adjusting the reinforcement ratio and specimen size in another specific embodiment of the present invention.

[0083] Figure 9 This is a graph showing the influence of longitudinal and transverse reinforcement ratios on the inter-story drift angle of a low-rise shear wall under the condition that the longitudinal and transverse reinforcement ratios are equal in a specific embodiment of the present invention.

[0084] Figure 10 This is a graph showing the change of the inter-story drift angle of a low-rise shear wall with longitudinal and transverse reinforcement ratios after adjusting the shear span ratio and axial compression ratio in a specific embodiment of the present invention.

[0085] Figure 11 This is a graph showing the change of the inter-story drift angle of a low-rise shear wall with longitudinal and transverse reinforcement ratios after adjusting the shear span ratio and axial compression ratio in another specific embodiment of the present invention.

[0086] Figure 12 This is a graph showing the influence of longitudinal and transverse reinforcement ratios on the inter-story drift angle of a low-rise shear wall under the condition that the longitudinal and transverse reinforcement ratios are not equal in a specific embodiment of the present invention.

[0087] Figure 13 This is a graph showing the effect of adjusting the longitudinal and transverse reinforcement ratios on the inter-story drift angle of a low-rise shear wall in a specific embodiment of the present invention.

[0088] Figure 14 This is a graph showing the effect of adjusting the longitudinal and transverse reinforcement ratios on the inter-story drift angle of the low-rise shear wall after seismic resistance, in another specific embodiment of the present invention.

[0089] Figure 15 This is a graph showing the influence of the axial compressive strength of concrete on the inter-story drift angle of a low-rise shear wall in a specific embodiment of the present invention.

[0090] Figure 16 This is a graph showing the effect of the axial compressive strength of concrete on the inter-story drift angle of a low shear wall after adjusting the shear span ratio and axial compression ratio in a specific embodiment of the present invention.

[0091] Figure 17 This is a graph showing the effect of the axial compressive strength of concrete on the inter-story drift angle of a low shear wall after adjusting the shear span ratio and axial compression ratio in another specific embodiment of the present invention.

[0092] Figure 18This is a graph showing the influence of the yield strength of steel bars on the inter-story drift angle of a low shear wall in a specific embodiment of the present invention.

[0093] Figure 19 This is a graph showing the effect of the yield strength of the steel bars on the inter-story drift angle of a low shear wall after adjusting the yield strength of the steel bars, the shear span ratio, and the axial compression ratio in a specific embodiment of the present invention.

[0094] Figure 20 This is a graph showing the influence of the yield strength of the steel reinforcement on the inter-story drift angle of the low shear wall after adjusting the yield strength of the steel reinforcement, the shear span ratio, and the axial compression ratio in another specific embodiment of the present invention.

[0095] Figure 21 This is a graph showing the influence of shear span ratio on the inter-story drift angle of a low-rise shear wall in a specific embodiment of the present invention.

[0096] Figure 22 This is a graph showing the effect of adjusting the steel reinforcement ratio and axial compression ratio on the inter-story drift angle of a low shear wall in a specific embodiment of the present invention.

[0097] Figure 23 This is a graph showing the effect of adjusting the steel reinforcement ratio and axial compression ratio on the inter-story drift angle of a low-rise shear wall after seismic resistance, in another specific embodiment of the present invention.

[0098] Figure 24 This is a comparison and fitting curve of the predicted and experimental values ​​of the inter-story drift angle of a low-rise shear wall under seismic cracking in a specific embodiment of the present invention;

[0099] Figure 25 This is a comparison and fitting curve of the predicted and experimental values ​​of the seismic yield inter-story drift angle of a low-rise shear wall in a specific embodiment of the present invention;

[0100] Figure 26 This is a comparison and fitting curve of the predicted and experimental values ​​of the seismic ultimate inter-story drift angle of a low-rise shear wall in a specific embodiment of the present invention;

[0101] Figure 27 This is a schematic diagram of a device for establishing a seismic-resistant inter-story drift angle prediction model for shear walls, according to an embodiment of the present invention. Detailed Implementation

[0102] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0103] The present invention will be further described in detail below with reference to specific embodiments, which should not be construed as limiting the scope of protection claimed by the present invention.

[0104] Example

[0105] To address the limitations of existing seismic bearing capacity-based design methods in quantitatively predicting inter-story drift angles and evaluating the seismic performance of shear walls, this invention proposes a method and apparatus for establishing a seismic inter-story drift angle prediction model for shear walls. Based on multiple sets of physical and finite element numerical tests of shear walls, and employing a multivariate nonlinear regression fitting method, a seismic inter-story drift angle prediction model for shear walls is proposed. Performance indices for cracked inter-story drift angles, yield inter-story drift angles, and ultimate inter-story drift angles are established, enabling quantitative prediction of the seismic inter-story drift angles of shear walls and providing accurate guidance for relevant engineering practices.

[0106] To achieve the above objectives, this invention proposes a method for establishing a seismic inter-story drift angle prediction model for shear walls.

[0107] like Figure 1 The diagram shows a flowchart of a method for establishing a seismic inter-story drift angle prediction model for shear walls according to an embodiment of the present invention. The method includes the following steps:

[0108] S1, conduct push-over tests on shear wall specimens, record the actual push-over test phenomena, and obtain the actual specimen height and actual top displacement of the shear wall specimens under the corresponding loads.

[0109] Specifically, in this embodiment, push-over tests were conducted on 16 groups of low-profile reinforced concrete shear wall specimens. During the push-over tests, a preset horizontal reciprocating load was applied to the shear wall specimens, and the actual specimen height and actual top displacement of the 16 groups of low-profile reinforced concrete shear wall specimens under the corresponding load were recorded. The actual push-over test phenomena include the distribution of cracking damage and the failure state of the shear wall.

[0110] S2. Based on the actual specimen height and actual top displacement, determine the corresponding actual inter-story drift angle of the shear wall and plot the first lateral force-inter-story drift angle curve.

[0111] Specifically, this step includes the following two sub-steps: (1) First, based on the actual specimen height and actual top displacement, determine the actual inter-story drift angle of the shear wall under the corresponding load using Formula 1. Formula 1, Where θ is the inter-story drift angle of the shear wall, Δu is the top displacement, and h is the specimen height. (2) Then, based on the actual inter-story drift angle of the shear wall under the corresponding load, the first lateral force-inter-story drift angle curve is plotted.

[0112] It is understandable that when plotting the first lateral force-inter-story drift angle curve, the curve can be obtained based on the actual inter-story drift angle of the shear wall and the corresponding load determined in this step; alternatively, the shear wall lateral force-displacement curve can be plotted based on the actual top displacement of the shear wall specimen under the corresponding load obtained in step S1 (e.g., ...). Figure 2 (As shown), then the top of the horizontal axis of the curve is removed by the specimen height to obtain the first lateral force-interlaminar displacement angle curve. Figure 2 The horizontal axis “displacement” corresponds to the actual top displacement, and the vertical axis “resultant force” corresponds to the horizontal load applied in the test.

[0113] S3. Based on actual pushover test phenomena and / or the first lateral force-inter-story drift angle curve, determine the actual inter-story drift angle corresponding to the typical characteristic load of the shear wall.

[0114] The actual inter-story drift angle includes the actual cracked inter-story drift angle, the actual yield inter-story drift angle, and the actual ultimate inter-story drift angle. In this embodiment, the inter-story drift angle corresponding to the occurrence of the first crack in the shear wall is defined as the cracked inter-story drift angle; the inter-story drift angle corresponding to the shear wall reaching the yield state is defined as the yield inter-story drift angle; and the inter-story drift angle corresponding to the shear wall reaching the ultimate limit state of bearing capacity is defined as the ultimate inter-story drift angle. The cracked inter-story drift angle can be determined by observing the pushover test phenomenon and combining it with the first lateral force-inter-story drift angle curve; the yield inter-story drift angle can be determined using the energy method based on the first lateral force-inter-story drift angle curve; and the ultimate inter-story drift angle corresponds to the highest point of the first lateral force-inter-story drift angle curve.

[0115] S4. Establish the finite element model corresponding to the shear wall specimen.

[0116] Furthermore, the finite element model corresponding to the shear wall specimen is established, including the following three sub-steps:

[0117] S401, Establish the initial finite element model.

[0118] The initial finite element model includes the initial shear wall reinforced concrete model, initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters.

[0119] S402, using finite element analysis software to simulate the push-over test of shear wall specimens, record the simulated push-over test phenomena and obtain the second lateral force-inter-story drift angle curve.

[0120] S403, based on the first lateral force-interstory drift angle curve, adjust the initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters to make the similarity between the second lateral force-interstory drift angle curve and the first lateral force-interstory drift angle curve within a preset similarity range; and / or, based on the actual shear wall failure state, adjust the initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters to make the simulated shear wall failure state consistent with the actual shear wall failure state; and / or, based on the actual shear wall crack damage distribution, adjust the initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters to make the simulated shear wall crack damage distribution consistent with the actual shear wall crack damage distribution.

[0121] Specifically, the finite element analysis software used in this embodiment is Abaqus. When simulating the push-over test of the shear wall specimen, the same preset horizontal reciprocating load as in step S1 is applied to the shear wall specimen. The second lateral force-inter-story drift angle curve is obtained, and the simulated push-over test phenomena are recorded. The simulated push-over test phenomena include the simulated shear wall failure state and the simulated shear wall crack damage distribution. It should be understood that one dimension—the shear wall failure state, the shear wall crack damage distribution, or the lateral force-inter-story drift angle curve—can be selected for comparative evaluation of the finite element model, or multiple dimensions can be combined for comparative evaluation. In this embodiment, the finite element model is comprehensively evaluated using the above three dimensions: First, based on the actual shear wall cracking damage distribution, the material constitutive model parameters, contact setting parameters, and mesh parameters are adjusted to make the simulated shear wall cracking damage distribution consistent with the actual shear wall cracking damage distribution. Second, based on the actual shear wall failure state, the material constitutive model parameters, contact setting parameters, and mesh parameters are adjusted to make the simulated shear wall failure state consistent with the actual shear wall failure state. Third, based on the first lateral force-interstory drift angle curve, the material constitutive model parameters, contact setting parameters, and mesh parameters are adjusted to ensure that the similarity between the second lateral force-interstory drift angle curve and the first lateral force-interstory drift angle curve is within a preset similarity range.

[0122] S5 extends the finite element model using preset shear wall parameters to generate an extended finite element model.

[0123] The preset shear wall parameters include: the similarity ratio of the finite element model specimen and the prototype wall size, the shear span ratio, the axial compression ratio, the reinforcement ratio, the axial compressive strength of concrete, and the yield strength of steel reinforcement.

[0124] In this step, the finite element model is extended using preset shear wall parameters to generate an extended finite element model. Specifically, this includes: adjusting at least one of the preset shear wall parameters to extend the finite element model, and determining the cracking inter-story drift angle, yield inter-story drift angle, and ultimate inter-story drift angle of the extended finite element model.

[0125] Specifically, this embodiment is based on the finite element model established in S4. By adjusting the shear wall parameters in the finite element model, 123 corresponding finite element models are established, and then the cracking inter-story drift angle, yield inter-story drift angle and ultimate inter-story drift angle corresponding to the extended finite element model are determined.

[0126] like Figures 3 to 5 The diagram illustrates the similarity ratio parameters of the finite element model specimen and the prototype wall dimensions, as well as the influence of the shear span ratio on the inter-story drift angle of the low-rise shear wall in a specific embodiment of the present invention. Figure 3 To maintain a shear span ratio of 0.5 and an axial compression ratio of 0.2, the steel reinforcement ratio is 1.6% (ρ). h ρ represents the transverse reinforcement ratio. v The curves showing the changes in longitudinal reinforcement ratio, inter-layer displacement angle at cracking, inter-layer displacement angle at yield, and ultimate inter-layer displacement angle with similarity ratio are represented. Figure 4 , Figure 5 The curves showing the changes in the interlaminar displacement angle, yield interlaminar displacement angle, and ultimate interlaminar displacement angle with the similarity ratio after adjusting the shear span ratio to 0.4 and 0.3, respectively.

[0127] Similarly, Figures 6 to 8 This is a graph showing the influence of axial compression ratio and specimen size on the inter-story drift angle of a low-profile shear wall in a specific embodiment of the present invention. Specifically, Figure 6 The curves showing the changes in cracking inter-story drift angle, yield inter-story drift angle, and ultimate inter-story drift angle with axial compression ratio when the steel reinforcement ratio is 1.2% and the specimen size is 0.9*3*0.185. Figure 7 , Figure 8 The figures show the changes in the cracking inter-layer displacement angle, yield inter-layer displacement angle, and ultimate inter-layer displacement angle after adjusting the steel reinforcement ratio to 1.6% and 2.4% and increasing the specimen size, respectively.

[0128] Figures 9 to 11 This is a curve illustrating the influence of longitudinal and transverse reinforcement ratios on the inter-story drift angle of a low-rise shear wall under the condition that the longitudinal and transverse reinforcement ratios are equal in a specific embodiment of the present invention. Specifically, Figure 9 , Figure 10 , Figure 11The curves showing the changes in cracking inter-story drift angle, yield inter-story drift angle, and ultimate inter-story drift angle with longitudinal and transverse reinforcement ratios when the shear span ratio is set to 0.3, 0.4, and 0.5, and the axial compression ratio is set to 0.1, 0.2, and 0.3, respectively.

[0129] Figures 12 to 14 This is a graph illustrating the influence of longitudinal and transverse reinforcement ratios on the inter-story drift angle of a low-rise shear wall under the condition that the longitudinal and transverse reinforcement ratios are unequal in a specific embodiment of the present invention. Figure 12 , Figure 13 , Figure 14 The figures show the curves of the inter-layer displacement angle at cracking, the inter-layer displacement angle at yielding, and the ultimate inter-layer displacement angle when the total longitudinal and transverse reinforcement ratios are 2.4%, 3.2%, and 4.8%, respectively.

[0130] like Figures 15 to 17 This is a graph showing the influence of the axial compressive strength of concrete on the inter-story drift angle of a low shear wall in a specific embodiment of the present invention. Figure 15 , Figure 16 , Figure 17 The curves show the changes in the interlaminar displacement angle, yield interlaminar displacement angle, and ultimate interlaminar displacement angle when the shear span ratio is set to 0.5, 0.4, and 0.3, and the axial compression ratio is set to 0.3, 0.2, and 0.1, respectively.

[0131] like Figures 18 to 20 This is a graph showing the influence of the yield strength of steel bars on the inter-story drift angle of a low-rise shear wall in a specific embodiment of the present invention. Figure 18 , Figure 19 , Figure 20 The curves showing the changes in cracking inter-story drift angle, yield inter-story drift angle, and ultimate inter-story drift angle with the yield strength of the steel reinforcement are given as follows: yield strength of steel reinforcement is 2.4%, 1.8%, and 1.2%, shear span ratio is set to 0.5, 0.4, and 0.3, and axial compression ratio is set to 0.3, 0.2, and 0.1.

[0132] like Figures 21 to 23 This is a graph showing the influence of shear span ratio on the inter-story drift angle of a low-rise shear wall in a specific embodiment of the present invention. Figure 21 , Figure 22 , Figure 23 The curves show the changes in cracking inter-story drift angle, yield inter-story drift angle, and ultimate inter-story drift angle with shear span ratio when the steel reinforcement ratio is 1.2, 1.6, 2.4 and the axial compression ratio is 0.1, 0.2, 0.3, respectively.

[0133] Based on the above Figures 3 to 23 The corresponding finite element models are established according to the parameter settings, that is, the extended finite element models are generated. Then, the cracking interlayer displacement angle, yield interlayer displacement angle and ultimate interlayer displacement angle corresponding to the extended finite element models are determined.

[0134] S6. The extended finite element model is used to simulate and analyze the shear wall specimen. Based on the simulation analysis results and the actual cracked inter-story drift angle, the actual yield inter-story drift angle and the actual ultimate inter-story drift angle, the corresponding cracked inter-story drift angle prediction model, the yield inter-story drift angle prediction model and the ultimate inter-story drift angle prediction model are established respectively.

[0135] The following sections will describe the process of establishing prediction models for cracked interlayer displacement angles, yielding interlayer displacement angles, and ultimate interlayer displacement angles.

[0136] S601, Establish a prediction model for interlayer displacement angle of cracked layers.

[0137] Based on the inter-story drift angles of the expanded finite element models in step S5 and the actual inter-story drift angles of the cracked walls determined in step S3, a prediction model for the inter-story drift angles of the cracked shear walls is established using a multivariate nonlinear regression fitting method and based on the least squares method.

[0138]

[0139] Where, θ x f is the interlayer displacement angle of the cracked layer. cu,k λ is the axial compressive strength of concrete (MPa), λ is the shear span ratio, and l w t represents the wall length (mm). n For wall thickness (mm), N A The value of α is 0.1 to 1, and the value of β is 0.01 to 0.1. "%" indicates that the final cracked interlayer displacement angle is in percentage form.

[0140] In a specific embodiment of the present invention, based on the cracked interlayer displacement angle of the extended finite element model and the actual cracked interlayer displacement angle, a multivariate nonlinear regression fitting method and based on the least squares method are used to obtain the coefficients α of the cracked interlayer displacement angle prediction model as 0.3468 and β as 0.0789.

[0141] S602, Establish a prediction model for interlayer displacement angle of yield.

[0142] Based on the yield inter-story drift angles of the multiple finite element models expanded in step S5 and the actual yield inter-story drift angles determined in step S3, a prediction model for the yield inter-story drift angle of the shear wall is established using a multivariate nonlinear regression fitting method and based on the least squares method.

[0143]

[0144] Where, θ y f is the interlayer displacement angle at yield. cu,kλ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, f y ρ is the yield strength of the steel reinforcement. se The reinforcement ratio is γ, which ranges from 1 to 2, and ε, which ranges from 0.1 to 1. "%" indicates that the final yield inter-story drift angle is in percentage form.

[0145] In a specific embodiment of the present invention, based on the yield inter-layer displacement angle of the extended finite element model and the actual yield inter-layer displacement angle, a multivariate nonlinear regression fitting method and based on the least squares method are used to obtain the parameters γ as 1.4765 and ε as 0.6378 in the shear wall yield inter-layer displacement angle prediction model.

[0146] S603, Establish a prediction model for the ultimate inter-story drift angle

[0147] Based on the ultimate inter-story drift angles of the multiple finite element models expanded in step S5 and the actual ultimate inter-story drift angles determined in step S3, a prediction model for the ultimate inter-story drift angle of the shear wall is established using a multivariate nonlinear regression fitting method and based on the least squares method.

[0148]

[0149] Where, θ u f is the ultimate inter-story drift angle. cu,k λ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, f y ρ is the yield strength of the steel reinforcement. se The reinforcement ratio is μ, which ranges from 2 to 3, and δ, which ranges from 0.1 to 1.

[0150] In a specific embodiment of the present invention, based on the ultimate inter-story drift angle and the actual ultimate inter-story drift angle of the extended finite element model, a multivariate nonlinear regression fitting method and based on the least squares method are used to obtain the parameters μ as 2.1193 and δ as 0.6226 in the prediction model of the ultimate inter-story drift angle of the shear wall.

[0151] like Figures 24 to 26The figures show the comparison and fitting curves between the predicted and experimental values ​​of the seismic cracking inter-story drift angle, yield inter-story drift angle, and ultimate inter-story drift angle of the low-rise shear wall in a specific embodiment of the present invention. As can be seen from the figures, the predicted values ​​of the seismic inter-story drift angle prediction model of the low-rise shear wall proposed in this invention have a good fit with the actual values, which verifies that the prediction model of the present invention has high accuracy. The seismic inter-story drift angle of the shear wall can be quantitatively predicted based on the determined cracking inter-story drift angle, yield inter-story drift angle, and ultimate inter-story drift angle prediction model.

[0152] To achieve the same objective as the methods described above, this invention also proposes a device for establishing a prediction model of inter-story drift angle for shear walls in seismic resistance.

[0153] like Figure 27 The diagram shows a device for establishing a prediction model of inter-story drift angle of shear wall seismic resistance. The device includes a test module 100, a first determination module 101, a second determination module 102, an establishment module 103, an extension module 104, and a simulation module 105. The functions of each module will be introduced below.

[0154] Test module 100 is used to conduct push-over tests on shear wall specimens, record the actual push-over test phenomena, and obtain the actual specimen height and actual top displacement of the shear wall specimen under the corresponding load.

[0155] Furthermore, the test module 100 is used to: apply a preset horizontal reciprocating load to the shear wall specimen and record the actual specimen height and actual top displacement of the shear wall specimen under the corresponding load.

[0156] The first determining module 101 is used to determine the corresponding actual inter-story drift angle of the shear wall based on the actual specimen height and actual top displacement, and to plot the first lateral force-inter-story drift angle curve.

[0157] Furthermore, the first determining module 101 is used for:

[0158] Based on the actual specimen height and actual top displacement, the actual inter-story drift angle of the shear wall under the corresponding load is determined using Formula 1. Formula 1 Where θ is the inter-story drift angle of the shear wall, Δu is the top displacement, and h is the specimen height.

[0159] Based on the actual inter-story drift angle of the shear wall under the corresponding load, the first lateral force-inter-story drift angle curve is plotted.

[0160] The second determining module 102 is used to determine the actual inter-story drift angle corresponding to the typical characteristic load of the shear wall based on the actual pushover test phenomena and / or the first lateral force-inter-story drift angle curve. The actual inter-story drift angle includes the actual cracked inter-story drift angle, the actual yield inter-story drift angle, and the actual ultimate inter-story drift angle.

[0161] Module 103 is used to create the finite element model corresponding to the shear wall specimen.

[0162] Furthermore, module 103 is established for:

[0163] An initial finite element model is established, which includes initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters.

[0164] The push-over test of the shear wall specimen was simulated using finite element analysis software. The simulated push-over test phenomena were recorded and the second lateral force-inter-story drift angle curve was obtained.

[0165] Based on the first lateral force-interlayer displacement angle curve, the initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters are adjusted so that the similarity between the second lateral force-interlayer displacement angle curve and the first lateral force-interlayer displacement angle curve is within a preset similarity range.

[0166] And / or, based on the actual shear wall failure state, adjust the initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters to make the simulated shear wall failure state consistent with the actual shear wall failure state.

[0167] And / or, based on the actual shear wall cracking damage distribution, adjust the initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters to make the simulated shear wall cracking damage distribution consistent with the actual shear wall cracking damage distribution.

[0168] The extension module 104 is used to extend the finite element model using preset shear wall parameters to generate an extended finite element model.

[0169] Furthermore, the preset shear wall parameters include: the similarity ratio of the finite element model specimen and the prototype wall dimensions, the shear span ratio, the axial compression ratio, the reinforcement ratio, the axial compressive strength of concrete, and the yield strength of steel reinforcement. The extended module is used for:

[0170] Adjust at least one of the preset shear wall parameters to expand the finite element model, and determine the cracking inter-story drift angle, yield inter-story drift angle, and ultimate inter-story drift angle of the expanded finite element model.

[0171] Simulation module 105 is used to perform simulation analysis on shear wall specimens using the extended finite element model. Based on the simulation analysis results and the actual cracked inter-story drift angle, the actual yield inter-story drift angle, and the actual ultimate inter-story drift angle, corresponding cracked inter-story drift angle prediction models, yield inter-story drift angle prediction models, and ultimate inter-story drift angle prediction models are established respectively.

[0172] Furthermore, the simulation module 105 is used for:

[0173] Based on the cracked inter-story drift angles of the extended finite element model and the actual cracked inter-story drift angles, a prediction model for the cracked inter-story drift angles of shear walls is established using a multivariate nonlinear regression fitting method and based on the least squares method.

[0174]

[0175] Where, θ x f is the interlayer displacement angle of the cracked layer. cu,k λ is the axial compressive strength of concrete (MPa), λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, α ranges from 0.1 to 1, and β ranges from 0.01 to 0.1.

[0176] Furthermore, the simulation module 105 is used for:

[0177] Based on the yield inter-story drift angle of the extended finite element model and the actual yield inter-story drift angle, a prediction model for the yield inter-story drift angle of the shear wall is established using a multivariate nonlinear regression fitting method and based on the least squares method.

[0178]

[0179] Where, θ y f is the interlayer displacement angle at yield. cu,k λ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, f y ρ is the yield strength of the steel reinforcement. se The reinforcement ratio is γ, which ranges from 1 to 2, and ε, which ranges from 0.1 to 1.

[0180] Furthermore, the simulation module 105 is used for:

[0181] Based on the ultimate inter-story drift angles of the extended finite element model and the actual ultimate inter-story drift angles, a prediction model for the ultimate inter-story drift angles of shear walls is established using a multivariate nonlinear regression fitting method and based on the least squares method.

[0182]

[0183] Where, θ u f is the ultimate inter-story drift angle. cu,k λ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. nN is the wall thickness. A For axial force, f y ρ is the yield strength of the steel reinforcement. se The reinforcement ratio is μ, which ranges from 2 to 3, and δ, which ranges from 0.1 to 1.

[0184] It should be understood that the device for establishing a seismic inter-story drift angle prediction model for shear walls is consistent with the corresponding method for establishing a seismic inter-story drift angle prediction model for shear walls, so this embodiment will not repeat it.

[0185] In summary, as can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0186] 1. Based on multiple physical tests and finite element numerical simulation studies of shear walls, this invention uses multivariate nonlinear regression fitting and least squares fitting to obtain the corresponding seismic inter-story drift angle prediction model for shear walls. From three performance indicators—cracking inter-story drift angle, yield inter-story drift angle, and ultimate inter-story drift angle—it achieves quantitative prediction of the seismic inter-story drift angle of shear walls. This model can be used for quantitative evaluation of the seismic performance of shear walls and can correctly guide relevant engineering practices.

[0187] 2. This invention extends the finite element model by adjusting the shear wall parameters and determines the cracking inter-story drift angle, yielding inter-story drift angle, and ultimate inter-story drift angle of the extended finite element model. Finally, the inter-story drift angle obtained from the model and the inter-story drift angle obtained from physical experiments are combined to fit the corresponding inter-story drift angle prediction model. This makes the inter-story drift angle prediction model proposed in this invention have high accuracy and can meet the quantitative prediction requirements of the seismic inter-story drift angle of shear walls.

[0188] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0189] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0190] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus or device (such as a computer-based system, a processor-included system or other system that can fetch and execute instructions from, an instruction execution system, apparatus or device).

[0191] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0192] It should be noted that, in the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A method for establishing a seismic inter-story drift angle prediction model for shear walls, characterized in that, include: Push-over tests were conducted on shear wall specimens, and the actual push-over test phenomena were recorded. The actual specimen height and actual top displacement of the shear wall specimens under the corresponding loads were obtained. Based on the actual specimen height and the actual top displacement, the corresponding actual inter-story drift angle of the shear wall is determined, and the first lateral force-inter-story drift angle curve is plotted. Based on the actual pushover test phenomena and / or the first lateral force-inter-story drift angle curve, the actual inter-story drift angle corresponding to the typical characteristic load of the shear wall is determined. The actual inter-story drift angle includes the actual cracked inter-story drift angle, the actual yield inter-story drift angle, and the actual ultimate inter-story drift angle. Establish the finite element model corresponding to the shear wall specimen; The finite element model is extended using preset shear wall parameters to generate an extended finite element model; The shear wall specimen was simulated and analyzed using the extended finite element model. Based on the simulation analysis results and the actual cracked inter-story drift angle, the actual yield inter-story drift angle, and the actual ultimate inter-story drift angle, corresponding cracked inter-story drift angle prediction models, yield inter-story drift angle prediction models, and ultimate inter-story drift angle prediction models were established respectively. An initial finite element model is established, which includes initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters. The push-over test of the shear wall specimen was simulated using finite element analysis software. The simulated push-over test phenomena were recorded and the second lateral force-inter-story drift angle curve was obtained. Based on the first lateral force-interlayer displacement angle curve, the initial material constitutive model parameters, the initial contact setting parameters, and the initial mesh parameters are adjusted so that the similarity between the second lateral force-interlayer displacement angle curve and the first lateral force-interlayer displacement angle curve is within a preset similarity range. And / or, based on the actual shear wall failure state, adjust the initial material constitutive model parameters, the initial contact setting parameters, and the initial mesh parameters to make the simulated shear wall failure state consistent with the actual shear wall failure state; And / or, based on the actual shear wall cracking damage distribution, adjust the initial material constitutive model parameters, the initial contact setting parameters, and the initial mesh parameters to make the simulated shear wall cracking damage distribution consistent with the actual shear wall cracking damage distribution.

2. The method according to claim 1, characterized in that, Pushover tests were conducted on shear wall specimens. The actual pushover test phenomena were recorded, and the actual specimen height and actual top displacement of the shear wall specimen under the corresponding load were obtained, including: A preset horizontal reciprocating load is applied to the shear wall specimen, and the actual specimen height and actual top displacement of the shear wall specimen under the corresponding load are recorded.

3. The method according to claim 1, characterized in that, Based on the actual specimen height and the actual top displacement, determine the corresponding actual inter-story drift angle of the shear wall, and plot the first lateral force-inter-story drift angle curve, including: Based on the actual specimen height and the actual top displacement, the corresponding inter-story drift angle of the shear wall under the appropriate load is determined using Formula 1. Formula 1... Where θ is the inter-story drift angle of the shear wall, Δu is the top displacement, and h is the specimen height; Based on the actual inter-story drift angle of the shear wall under the corresponding load, the first lateral force-inter-story drift angle curve is plotted.

4. The method according to claim 1, characterized in that, The preset shear wall parameters include: the similarity ratio of the finite element model specimen and the prototype wall dimensions, the shear span ratio, the axial compression ratio, the reinforcement ratio, the axial compressive strength of concrete, and the yield strength of steel reinforcement. The preset shear wall parameters are used to extend the finite element model, generating an extended finite element model, including: Adjust at least one of the preset shear wall parameters to expand the finite element model, and determine the cracking inter-story drift angle, yield inter-story drift angle, and ultimate inter-story drift angle of the expanded finite element model.

5. The method according to claim 4, characterized in that, The shear wall specimen was simulated and analyzed using the extended finite element model. Based on the simulation results and the actual cracked inter-story drift angle, a corresponding cracked inter-story drift angle prediction model was established, including: Based on the cracked inter-story drift angle of the extended finite element model and the actual cracked inter-story drift angle, a prediction model for the cracked inter-story drift angle of the shear wall is established using a multivariate nonlinear regression fitting method and based on the least squares method. Where, θ x f is the interlayer displacement angle of the cracked layer. cu,k λ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, α ranges from 0.1 to 1, and β ranges from 0.01 to 0.

1.

6. The method according to claim 4, characterized in that, The shear wall specimen was simulated and analyzed using the extended finite element model. Based on the simulation results and the actual cracked inter-story drift angle, a corresponding cracked inter-story drift angle prediction model was established, including: Based on the yield inter-story drift angle of the extended finite element model and the actual yield inter-story drift angle, a prediction model for the yield inter-story drift angle of the shear wall is established using a multivariate nonlinear regression fitting method and based on the least squares method. Where, θ y f is the interlayer displacement angle at yield. cu,k λ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, f y For the yield strength of the steel reinforcement, ρ se The reinforcement ratio is γ, which ranges from 1 to 2, and ε, which ranges from 0.1 to 1.

7. The method according to claim 4, characterized in that, The shear wall specimen is simulated and analyzed using the extended finite element model. Based on the simulation results and the actual ultimate inter-story drift angle, a prediction model for the corresponding ultimate inter-story drift angle is established, including: Based on the ultimate inter-story drift angle of the extended finite element model and the actual ultimate inter-story drift angle, a prediction model for the ultimate inter-story drift angle of the shear wall is established using a multivariate nonlinear regression fitting method and based on the least squares method. Where, θ u f is the ultimate inter-story drift angle. cu,k λ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, f y For the yield strength of the steel reinforcement, ρ se The reinforcement ratio is μ, which ranges from 2 to 3, and δ, which ranges from 0.1 to 1.

8. A device for establishing a prediction model of inter-story drift angle of shear wall under seismic resistance, characterized in that, include: The test module is used to conduct push-over tests on shear wall specimens, record the actual push-over test phenomena, and obtain the actual specimen height and actual top displacement of the shear wall specimen under the corresponding load. The first determining module is used to determine the corresponding actual inter-story drift angle of the shear wall based on the actual specimen height and the actual top displacement, and to plot the first lateral force-inter-story drift angle curve. The second determining module is used to determine the actual inter-story drift angle corresponding to the typical characteristic load of the shear wall based on the actual pushover test phenomenon and / or the first lateral force-inter-story drift angle curve. The actual inter-story drift angle includes the actual cracked inter-story drift angle, the actual yield inter-story drift angle, and the actual ultimate inter-story drift angle. A module is established to create the finite element model corresponding to the shear wall specimen; An extension module is used to extend the finite element model using preset shear wall parameters to generate an extended finite element model. The simulation module is used to perform simulation analysis on the shear wall specimen using the extended finite element model. Based on the simulation analysis results and the actual cracked inter-layer displacement angle, the actual yield inter-layer displacement angle, and the actual ultimate inter-layer displacement angle, the corresponding cracked inter-layer displacement angle prediction model, yield inter-layer displacement angle prediction model, and ultimate inter-layer displacement angle prediction model are established respectively. The push-over test phenomenon module is used to establish an initial finite element model, which includes initial material constitutive model parameters, initial contact setting parameters, and initial mesh parameters. The push-over test of the shear wall specimen was simulated using finite element analysis software. The simulated push-over test phenomena were recorded and the second lateral force-inter-story drift angle curve was obtained. Based on the first lateral force-interstory drift angle curve, adjust the initial material constitutive model parameters, the initial contact setting parameters, and the initial mesh parameters so that the similarity between the second lateral force-interstory drift angle curve and the first lateral force-interstory drift angle curve is within a preset similarity range; and / or, based on the actual shear wall failure state, adjust the initial material constitutive model parameters, the initial contact setting parameters, and the initial mesh parameters so that the simulated shear wall failure state is consistent with the actual shear wall failure state; and / or, based on the actual shear wall cracking damage distribution, adjust the initial material constitutive model parameters, the initial contact setting parameters, and the initial mesh parameters so that the simulated shear wall cracking damage distribution is consistent with the actual shear wall cracking damage distribution.

9. The apparatus according to claim 8, characterized in that, The test module is used to: apply a preset horizontal reciprocating load to the shear wall specimen and record the actual specimen height and actual top displacement of the shear wall specimen under the corresponding load.

10. The apparatus according to claim 8, characterized in that, The first determining module is used for: Based on the actual specimen height and the actual top displacement, the corresponding inter-story drift angle of the shear wall under the appropriate load is determined using Formula 1. Formula 1... Where θ is the inter-story drift angle of the shear wall, Δu is the top displacement, and h is the specimen height; Based on the actual inter-story drift angle of the shear wall under the corresponding load, the first lateral force-inter-story drift angle curve is plotted.

11. The apparatus according to claim 8, characterized in that, The preset shear wall parameters include: the similarity ratio of the finite element model specimen and the prototype wall dimensions, the shear span ratio, the axial compression ratio, the reinforcement ratio, the axial compressive strength of concrete, and the yield strength of steel reinforcement. The extended module is used for: Adjust at least one of the preset shear wall parameters to expand the finite element model, and determine the cracking inter-story drift angle, yield inter-story drift angle, and ultimate inter-story drift angle of the expanded finite element model.

12. The apparatus according to claim 11, characterized in that, The simulation module is used for: Based on the cracked inter-story drift angle of the extended finite element model and the actual cracked inter-story drift angle, a prediction model for the cracked inter-story drift angle of the shear wall is established using a multivariate nonlinear regression fitting method and based on the least squares method. Where, θ x f is the interlayer displacement angle of the cracked layer. cu,k λ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, α ranges from 0.1 to 1. The value of β ranges from 0.01 to 0.

1.

13. The apparatus according to claim 11, characterized in that, The simulation module is used for: Based on the yield inter-story drift angle of the extended finite element model and the actual yield inter-story drift angle, a prediction model for the yield inter-story drift angle of the shear wall is established using a multivariate nonlinear regression fitting method and based on the least squares method. Where, θ y f is the interlayer displacement angle at yield. cu,k λ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, f y For the yield strength of the steel reinforcement, ρ se The reinforcement ratio is γ, which ranges from 1 to 2, and ε, which ranges from 0.1 to 1.

14. The apparatus according to claim 11, characterized in that, The simulation module is used for: Based on the ultimate inter-story drift angle of the extended finite element model and the actual ultimate inter-story drift angle, a prediction model for the ultimate inter-story drift angle of the shear wall is established using a multivariate nonlinear regression fitting method and based on the least squares method. Where, θ u f is the ultimate inter-story drift angle. cu,k λ is the axial compressive strength of concrete, λ is the shear span ratio, and l w Let t be the length of the wall. n N is the wall thickness. A For axial force, f y ρ is the yield strength of the steel reinforcement. se The reinforcement ratio is μ, which ranges from 2 to 3, and δ, which ranges from 0.1 to 1.

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