50 results about "Seismic response analysis" patented technology

The objective is to provide a construction project planning method capable of shortening the construction project schedule. [Solution] A process planning method for planning the processes of a monopile foundation construction project, comprising: a structural analysis process SA3 in which a computer performs multiple structural analyses of a monopile foundation model; and a first fabrication process SB1 that is started after completion of the earthquake response analysis included in the first structural analysis process SA3 and before completion of the earthquake response analysis included in the second structural analysis process SA3, wherein the first fabrication process SB1 does not fabricate the interface flange of the transition piece, but fabricates parts of the transition piece other than the interface flange, and the first fabrication process SB1 fabricates a connection part of the monopile body that is connected to the transition piece in a state that overlaps with it when viewed horizontally, but does not fabricate parts of the monopile body other than the connection part.

The invention discloses a large-span steel structure earthquake response IBE simulation method considering soil-structure interaction, and relates to the technical field of building structure earthquake response simulation. Comprising the following steps: establishing a large-span steel structure earthquake response calculation model considering soil-structure interaction; solving a soil layer free field response based on a direct stiffness method; solving a basic stiffness matrix based on a uniform wiring load Green function and a boundary continuity condition; solving a basic free field response according to the soil layer free field response and the basic stiffness matrix; solving a basic scattered field response according to the motion equations of the foundation and the large-span steel structure; adding the foundation free field response and the foundation scattered field response to obtain a foundation response under the earthquake action; according to the relation between the large-span steel structure response and the foundation response, the large-span steel structure column top response is solved, and according to the motion equation of the large-span steel structure, the large-span steel structure mid-span response is solved. The accuracy of structural earthquake response analysis can be improved.

The invention is suitable for the technical field of seismic analysis, and provides a structure seismic performance analysis method and device considering cross-fault seismic oscillation, and a terminal. The method comprises the following steps: acquiring earthquake magnitude data, and calculating a recurrence period of each earthquake magnitude; establishing an empirical relationship between the magnitude and the recurrence period; calculating geometric dimension parameters of the fault through the empirical relation, and determining a research area crossing the fault and a fault fracture model; according to the fault fracture model, the digital elevation model and the soil layer information model, broadband seismic oscillation simulation is carried out, and an engineering site cross-fault seismic oscillation field is obtained; the method comprises the following steps: establishing a finite element model containing a cross-fault structure and surrounding rock, converting seismic oscillation into an equivalent force load on a boundary node of the finite element model, applying the equivalent force load on the boundary node of the finite element model, and performing cross-fault seismic response analysis on the cross-fault structure. According to the method, a closed-loop process from seismic oscillation selection input to performance index evaluation is realized, and a systematic solution is provided for anti-seismic performance evaluation analysis of a cross-fault structure.

The invention discloses a simplified analysis simulation method for a nine-supporting-rod infilled wall, and the method comprises the following steps: 1, determining nodes of peripheral vertical and horizontal structural members, determining two end points and a middle node of a middle elastic-plastic supporting rod, additionally arranging two nodes at the same positions of the two end points respectively, determining local nodes of the horizontal structural member; 2, a filler wall nine-supporting-rod simplified model composed of eight filler wall rigid supporting rods and filler wall middle elastic-plastic supporting rods is constructed; 3, fiber discretization is conducted on the elastic-plastic supporting rod in the middle of the infilled wall, each fiber represents a small area on the cross section and has different positions, cross section areas and material attributes, and the coupling earthquake response inside and outside the plane of the infilled wall is analyzed. The method is mainly used for analyzing the earthquake response inside and outside the infilled wall plane under the earthquake action, the actual working state of the infilled wall can be better reflected under the condition that the accuracy is ensured, and engineering application is facilitated.

The invention relates to the technical field of seismic records, in particular to a near-source strong seismic record selection method and system considering a sliding impact effect, and the method comprises the following steps: introducing permanent displacement as a condition parameter into seismic oscillation selection based on a generalized condition intensity index; a target permanent displacement amount is given by an extended probability fault displacement danger analysis method; in the target seismic intensity index set, spectrum displacement is used for replacing common spectrum acceleration to represent spectrum components of seismic oscillation; an empirical correlation coefficient suitable for permanent displacement type near-source strong earthquake records is further calculated and given, corresponding condition intensity index target distribution is constructed, and finally optimization is carried out from a near-source strong earthquake database to obtain a permanent displacement type near-source strong earthquake data set which is most consistent with the target condition distribution; according to the method, a reasonable input vibration selection method can be provided for seismic response analysis of a near-seismic-source engineering structure under the strong vibration-fault movement coupling effect.

The invention belongs to the field of dam flood discharge safety, and provides a dam flood discharge safety protection method and system based on earthquake response analysis, and the method comprises the steps: S1, obtaining multi-source environment and structure data in real time; s2, preprocessing the multi-source environment and structure data to form a unified time sequence multi-dimensional data set; s3, simulating and analyzing the structural dynamic response of the dam and the flood discharge gate based on the unified time sequence multi-dimensional data set, and evaluating potential damage; s4, comprehensive risk assessment is carried out by combining the earthquake response analysis and damage assessment result, the hydro meteorological data and the flood discharge gate operation state data, and early warning information is generated; s5, generating a dynamically adaptive flood discharge gate opening and closing strategy according to the comprehensive risk assessment result and the early warning information; s6, executing the opening and closing strategy of the flood discharge gate, and monitoring the actual operation state of the flood discharge gate in real time; and carrying out comparative analysis on the actual running state of the flood discharge gate and the prediction strategy, and carrying out updating and optimization according to an analysis result.

The invention discloses an anti-seismic property analysis method for a wind and rain bridge body structure. By constructing a finite element model of the wind and rain bridge, the mechanical response of the wind and rain bridge under the action of static load and seismic waves is simulated. The method specifically comprises the following steps: constructing a finite element model comprising a pier, a bridge floor, a wooden support and a rubber shock insulation layer; carrying out static analysis to obtain bearing capacity, deflection and stress distribution; carrying out dynamic analysis, including modal analysis and seismic response analysis, to determine a key response spectrum; and the arrangement scheme of the rubber shock insulation layer is optimized to improve the anti-seismic performance. According to the method, through refined finite element analysis and in combination with the rubber shock insulation technology, the anti-seismic performance of the wind and rain bridge is remarkably improved, and the historical and cultural values of the wind and rain bridge are kept to the maximum extent. The method provides a scientific basis and technical support for improving the anti-seismic property of a traditional wood structure building, and has important engineering application value and culture protection significance.

A method for selecting near-source strong motion records considering fling-step effects includes the following steps: introducing a permanent displacement as a conditional parameter into ground motion selection based on generalized conditional intensity measures, and giving a target permanent displacement by extended probabilistic fault displacement hazard analysis; characterizing a frequency content component of a ground motion with a spectral displacement instead of spectral acceleration in a target ground motion intensity measure set; further calculating an empirical correlation coefficient suitable for near-source strong motion records with permanent displacement, constructing a corresponding target conditional distribution, and finally obtaining a data set of near-source strong motion records with permanent displacement most consistent with a target conditional distribution by optimizing selection from a near-source strong motion database. A reasonable ground motion selection method is provided for seismic response analysis of near-source engineering structures under a strong motion-fault dislocation coupled effect.

The invention discloses a seismic response analysis method for a magnetic levitation line axle coupling system with a seismic isolation support. The method comprises the steps that a motion equation of the magnetic levitation line axle coupling system considering nonlinear mechanical behaviors of the seismic isolation support under the seismic action is constructed; and solving the motion equation by considering equivalent linearization and separation iteration to obtain the dynamic response of the maglev line vehicle and the bridge. According to the method, a bridge model considering the nonlinear hysteresis behavior of the seismic isolation support and a magnetic track interaction model based on PID active control are established, and unified seismic analysis is carried out on strong nonlinear energy consumption of the seismic isolation support and specific active control dynamics of a magnetic levitation vehicle; the problem that an existing universal axle coupling analysis method cannot be directly applied to the complex system is solved.

The invention relates to a shield tunnel seismic response simplified analysis method based on a shell-spring model. The method comprises the following steps: constructing a soil-shield tunnel calculation model considering bolt contact connection; establishing a seismic oscillation evolution power spectrum model and a variable dry function model, and generating a seismic oscillation time history curve; inputting the soil-shield tunnel model into a ground vibration time-history curve, performing three-dimensional dynamic time-history analysis, and determining a value of spring stiffness; on the basis of the determined value of the spring stiffness, constructing a shield tunnel refined model based on the shell-spring unit, and obtaining a shield tunnel earthquake response rule based on the shell-spring unit; through comparison with a simplified homogeneous tunnel model seismic response rule, determining a correction factor, and establishing a simplified analysis model based on a standard design method and the correction factor; and verifying the accuracy of the simplified analysis model through a vibration table test. According to the method, discontinuity and local rigidity reduction of bolt contact connection in the shield tunnel model are considered, and the accuracy of seismic response analysis is improved.

The invention provides a pile foundation seismic response analysis method and system suitable for a liquefaction site, and the method comprises the steps: building a control equation of a liquefied soil layer and a control equation of a non-liquefied soil layer based on a potential flow theory and a Biot dynamic consolidation theory, building a balance equation of pile foundations in the liquefied soil layer and the non-liquefied soil layer based on an Euler-Bernoulli beam theory, and carrying out the seismic response analysis of the pile foundations in the liquefied soil layer and the non-liquefied soil layer. An SH wave is introduced to analyze the seismic response of the pile foundation in the whole frequency domain; the lateral response of the pile foundation at the interface of the liquefied soil layer and the non-liquefied soil layer is analyzed through a transfer matrix method, the continuity of a dynamic response vector is ensured, and therefore the safety and reliability of pile foundation design are effectively improved.

The present invention discloses a method for analyzing the seismic time-history response of bridges driven jointly by physics and data, which relates to the technical field of seismic response analysis methods. The present invention includes the following steps: S1: Nonlinear element simulation of support and restraint components; S2: Determination of highway bridge model parameters; S3: Establishment of a parametric finite element representation method for bridges; S4: Establishment of a highway bridge database; S5: Establishment of finite element models for each bridge sample; S6: Design of a deep network for mapping the input and output layers of the bridge; S7: Establishment of a surrogate model for analyzing the seismic time-history response of bridges. The present invention strengthens the physical basis of machine learning methods and makes full use of their powerful nonlinear characterization ability to accurately and efficiently analyze the seismic time-history response of bridges, which has important engineering value for the evaluation methods of seismic performance of new-generation single and regional bridge structures, and also has important significance for the development of basic innovation theories of interdisciplinary intersections.

This invention relates to the field of post-earthquake assessment technology for railway bridges, specifically providing a method, equipment, and medium for assessing the post-earthquake vulnerability of high-speed railway bridges. The method includes: establishing a seismic response analysis model for the track-bridge system and a three-dimensional coupled dynamic model of the train-track-bridge system; constructing a post-earthquake composite track surface irregularity sample library; proposing a track surface smoothness index based on high-speed train comfort; establishing a mapping relationship between the track surface smoothness index and post-earthquake train performance indices; classifying the track surface smoothness index into four levels based on the post-earthquake train performance loss state of the track-bridge system; and establishing vulnerability curves of the track-bridge system based on train performance under different train performance loss states. This invention achieves quantitative assessment of performance-oriented functional loss; it can quantitatively provide the probability of occurrence of each level of train performance loss under different seismic intensities, providing a scientific probabilistic basis for rapid post-earthquake assessment, repair decisions, and seismic design of high-speed railway bridges.

The present invention relates to a simplified analysis method for the seismic response of shield tunnels based on a shell-spring model, and the steps are as follows: constructing a soil-shield tunnel calculation model considering bolt contact connection; establishing a seismic ground motion evolution power spectrum model and a phase coherence function model to generate seismic ground motion time history curves; inputting the soil-shield tunnel model into the seismic ground motion time history curves for three-dimensional dynamic time history analysis to determine the value of spring stiffness; based on the determined value of spring stiffness, constructing a refined model of the shield tunnel based on shell-spring elements to obtain the seismic response law of the shield tunnel based on shell-spring elements; determining a correction factor by comparing with the seismic response law of a simplified homogeneous tunnel model, and establishing a simplified analysis model based on the code design method and the correction factor; verifying the accuracy of the simplified analysis model through a shaking table test. This method takes into account the discontinuity and local stiffness reduction of bolt contact connection in the shield tunnel model, and improves the accuracy of seismic response analysis.

The present application relates to a kind of layered site shield tunnel earthquake response analysis method, it is related to shield tunnel aseismatic numerical simulation technical field.The method includes the following steps: S1, intercepting the calculation area in line with the requirement of aseismic specification, the numerical model of shield tunnel and layered stratum is established;S2, the viscoelastic boundary parameter of each layer stratum, amplitude variation coefficient and time delay are calculated;S3, selected incident seismic wave, obtains the free field motion of layered site, calculates the equivalent node load of model viscoelastic boundary;S4, to model, applies viscoelastic boundary and equivalent node load, calculates the seismic response of shield tunnel.The present application adopts the seismic motion input method of equivalent load of viscoelastic boundary, can according to the travel effect of seismic wave and its transmission and reflection characteristics in different layered medium, provides effective support for the safety analysis of layered site shield tunnel under earthquake action.

The present invention provides a method, system, device and medium for analyzing the seismic response of a gravity dam, belonging to the technical field of seismic response analysis. The method includes the following steps: setting the solid artificial boundary and the fluid artificial boundary of the foundation reservoir water of the gravity dam, and constructing a finite element model of the foundation reservoir water of the gravity dam; constructing an artificial boundary substructure model through the solid artificial boundary nodes, the fluid artificial boundary nodes, and the nodes adjacent to both; applying the displacement time history of the free wave field of the reservoir water-foundation to all the fluid artificial boundary nodes and the solid artificial boundary nodes on the upstream side of the artificial boundary substructure model, applying the displacement time history of the free wave field of the solid foundation to all the solid artificial boundary nodes on the downstream side of the artificial boundary substructure model, and performing dynamic analysis on the artificial boundary substructure model to obtain the equivalent input seismic load; inputting the equivalent input seismic load into the finite element model of the foundation reservoir water of the gravity dam to perform seismic response analysis. The present invention is more accurate in analyzing the seismic dynamic response of the gravity dam.

The invention discloses a multi-frequency seismic response analysis method based on a Fourier enhanced physical information KAN network, and relates to the technical field of seismic response analysis, and the method comprises the steps: carrying out the Fourier expansion of each feature of an input spatial domain parameter at an input layer, and obtaining a Fourier basis combination; a Fourier spectrum is extracted from a summation result of all Fourier basis combinations in a hidden layer, and the Fourier spectrum is dynamically activated based on a linear combination activation function of Fourier basis; by introducing a KAN structure and decomposing high-dimensional mapping into a plurality of visual single-variable functions, the interpretability of the model is improved, so that the influence of each input variable on output has clear physical significance; for the problems of low parameter efficiency and insufficient high-frequency characterization capability of KAN, Fourier basis function explicit coding input signal frequency domain features are introduced, and expression of neural tangent kernel multi-spectrum is realized.

The invention discloses a close-range crossed underground structure group seismic response calculation method, provides a corresponding seismic design process, and determines main influence factors influencing system seismic response by establishing a calculation model containing a soil body-single typical underground structure and a soil body-close-range crossed underground structure group. And on the basis of numerical parameter analysis suggested influence factors, a complex interaction problem is simplified into a relatively mature anti-seismic analysis problem of a single typical underground structure, so that seismic response analysis and a practical anti-seismic design process of the close-range crossed underground structure group under the action of an earthquake are realized. The problem of aseismic design of a large number of emerging short-distance underground structure crossed structure groups at present is effectively solved.

The invention discloses a site differentiation earthquake response analysis method and system based on earthquake motion types, and belongs to the technical field of building earthquake-proof engineering, and the method comprises the steps: dividing a target site into three types of sites according to the obtained drilling information of the target site, and constructing a site model corresponding to each type of site; respectively calculating dynamic response results of each site model under the near-field pulse type seismic motion and the near-field non-pulse type seismic motion by adopting a time domain nonlinear analysis method; generating two groups of surface response spectrum amplification coefficients according to the dynamic response result of each site model, and comparing peak values with periods; and according to a comparison result of the peak value and the period, combining each site model to obtain a differential earthquake response analysis result. According to the method, the significant amplification effect of pulse type seismic oscillation on a soft soil site and the significant amplification effect of non-pulse type seismic oscillation on a medium-hard soil site are effectively revealed, and the problem that the difference of seismic oscillation types is not fully considered in existing analysis is solved.

The application provides a plastic damage trigger adaptive model reduction method.The method realizes nonlinear seismic response analysis of a large complex structure,adopts a modal analysis method for a linear substructure,compared with a traditional finite element method,significantly reduces the calculation requirement and improves the calculation efficiency; meanwhile,for a nonlinear substructure,an order reduction basis constructed by using a tangent stiffness based vibration mode and a constraint mode is used to reduce the degree of freedom,that is,calculation efficiency is further improved and the accuracy of a local nonlinear analysis result is ensured. In addition, the application is not limited to the large complex structure as the analysis object, and the same method can be used for dynamic response analysis of other types of structures.

The application discloses a UHPC-steel box composite beam full-bridge seismic analysis method, which comprises the following steps: constructing a full-bridge simplified model, a first detailed model and a second detailed model of a bridge to be analyzed; calculating the full-bridge simplified model and loading the calculation results on the first detailed model; loading the calculation results of the first detailed model on the second detailed model; adjusting the dynamic response parameters of the simplified part according to the calculation results; and performing seismic safety analysis on the bridge to be analyzed according to relevant data. The full-bridge model is decomposed into three models for sequential cyclic calculation, so that the response characteristics of the detailed structure in the seismic dynamic response are fully expressed; the UHPC-steel box composite beam full-bridge seismic response analysis can be performed, and too many detailed structures are not included in one model, so that the dynamic calculation efficiency can be greatly improved, the calculation non-convergence condition is reduced, and the UHPC-steel box composite beam full-bridge seismic response analysis can be performed.

The invention discloses an equivalent load automatic calculation and application method suitable for a reaction displacement method, and the method comprises the steps: carrying out the calculation of soil layer one-dimensional earthquake reaction analysis based on soil layer material parameters and environment parameters of an underground structure; obtaining four load parameter curves of relative displacement, shear stress, acceleration and shear modulus corresponding to the occurrence moment of the maximum relative displacement of the top and the bottom of the underground structure along with the change of the depth of the soil layer; and extracting load parameters at positions corresponding to the depth of the underground structure, calculating through a load formula to obtain corresponding relative displacement load, inertia force and shearing force, and applying the obtained equivalent load to corresponding units or nodes of the underground structure. The method has the advantages that the one-dimensional earthquake response analysis result is processed, four load parameter curves of the relative displacement, the shear stress, the acceleration and the shear modulus which correspond to the occurrence moment of the maximum relative displacement of the top and the bottom of the underground structure and change along with the depth of the soil layer are obtained, and automatic calculation and application of equivalent loads are facilitated.

The application discloses a nine-brace filling wall simplified analysis simulation method, and comprises the following steps: step one, determining the nodes of the peripheral vertical and horizontal structural members, determining the two end points and the intermediate node of the intermediate elastic-plastic brace, additionally setting two nodes at the same position of the two end points, and determining the local nodes of the horizontal structural members; step two, constructing a filling wall nine-brace simplified model composed of eight filling wall rigid braces and the intermediate elastic-plastic brace of the filling wall; step three, performing fiber discretization on the intermediate elastic-plastic brace of the filling wall, each fiber representing a small area on a section, having different positions, section areas and material properties, and analyzing the in-plane and out-of-plane coupling seismic responses of the filling wall. The application is mainly used for analyzing the in-plane and out-of-plane seismic responses of the filling wall under the action of earthquakes, can better reflect the actual working state of the filling wall under the condition of ensuring the accuracy, and is convenient for engineering application.

The invention provides a pile foundation seismic response analysis method and system considering a transverse inertial effect, a storage medium and application of the pile foundation seismic response analysis method and system. Aiming at the problem that a pile-soil coupling vibration model in the prior art neglects the fractional order viscoelasticity characteristic of unsaturated soil and the transverse inertia effect of an uncoupled pile body, the invention provides a large-diameter end-bearing pile seismic response analysis model based on a fractional order viscoelasticity constitutive structure. A fractional derivative is introduced to describe the stress relaxation characteristic of an unsaturated soil skeleton, a Rayleigh-Love beam theory is combined to characterize the transverse deformation effect of a pile body, and a pile-soil coupling vibration control equation under the action of earthquake P waves is constructed. Laplacian transformation, potential function decomposition and operator decomposition methods are adopted to realize equation dimensionality reduction solution, a pile-soil interface continuous condition and a boundary constraint condition are synthesized, a theoretical analytical solution of vibration response in a frequency domain is obtained, and a theoretical basis is provided for aseismic design of a pile foundation in an unsaturated land area.

The invention belongs to the field of dam flood discharge safety, and provides a dam finite element analysis method and system based on a dynamic time history method of a wave theory, and the method comprises the steps: S1, building a refined finite element model of a dam-foundation-reservoir coupling system; s2, generating a fluctuation theory artificial boundary condition acting on the external boundary of the foundation medium unit; s3, seismic oscillation input is applied to the refined finite element model; s4, solving the dynamic response of the coupling system under the seismic action by adopting a nonlinear dynamic solver in combination with a time domain integration method; and carrying out earthquake response analysis and damage evaluation on the dam based on the solved dynamic response result. According to the method, through cooperative work of all the parts, dam finite element analysis based on the dynamic time history method of the wave theory is achieved, and accurate and reliable technical support can be provided for aseismic design and safety evaluation of dam engineering.

The present invention discloses a method for distinguishing earthquake liquefaction by considering the terrain effect of a river valley site. The method includes extracting the coordinate data of the river valley site based on the geological exploration data of the river valley site, then using the coordinate data of the river valley site to establish a two-dimensional river valley site model, and performing finite element analysis on the river valley site model to obtain the earthquake response analysis result of the river valley site, and finally performing earthquake liquefaction analysis on the river valley site according to the earthquake response analysis result to obtain the dynamic shear stress time history at any position, and realizing earthquake liquefaction distinction of the river valley site by comparing the site anti-liquefaction strength. The present invention can simulate the refraction, reflection and scattering of seismic waves in the terrain of the river valley site, consider the amplification or suppression effect of the spatial terrain effect of the river valley site on the seismic load in the calculation of the seismic load, improve the calculation efficiency, and can more truly reflect the spatial inconsistency of the propagation of seismic motion and the spatial radiation damping effect of the seismic wave energy compared with the seismic wave vibration input method.

This invention provides a method for correcting the vertical bearing capacity of pile foundations in liquefiable silty soil considering the vibration time effect, relating to the field of geotechnical engineering. This method includes S1: based on vibration time history data from the engineering site, baseline correction, bandpass filtering, and normalization are performed on the original vibration acceleration time history to obtain a standardized vibration acceleration time sequence; S2: based on the standardized vibration acceleration time sequence, a one-dimensional equivalent shear beam model is used for seismic response analysis to calculate the cyclic shear stress time history distribution of soil layers at different depths, obtaining the cyclic shear stress time history distribution field of the soil layers. By performing baseline correction, frequency band filtering, and amplitude unification processing on the vibration acceleration time history, the input data possesses stable spectral characteristics and a consistent scale foundation, and combined with a shear propagation model, a continuous distribution of stress response at different depths over time is obtained.

The invention belongs to the technical field of high pier damage assessment, and relates to a high pier earthquake damage assessment method. The method comprises the steps that the number and positions of plastic hinges of a high-pier body are determined through earthquake response analysis; dividing the high pier into a plurality of sections of low piers; calculating the pier top drift ratio of each section of low pier; taking the maximum value of the absolute values of the pier top drift ratios of all the low piers to obtain a high pier damage index; counting and establishing a hollow pier damage grade threshold based on test data; and determining the damage grade of the high pier according to the corresponding relationship between the high pier damage index and the damage grade threshold. According to the method, the bending damage and the shearing damage of the reinforced concrete pier can be described at the same time, a more accurate and safer earthquake damage estimation result can be obtained for the reinforced concrete hollow high pier, and the problem of inaccurate high pier shearing effect and high-order vibration mode multi-bending damage estimation is solved.

The invention belongs to the technical field of reactor system structural mechanics, and particularly relates to a fluid-structure interaction seismic response analysis method for a liquid metal reactor. The method comprises the following steps: S10, establishing a reactor geometric model; s20, performing finite element modeling on the established reactor geometric model; s30, performing fluid-solid coupling setting on the established reactor finite element model; s40, setting boundary conditions for the built reactor finite element model; s50, introducing an asymmetric stiffness matrix into an acoustic fluid unit, and carrying out modal analysis on the reactor finite element model by adopting an asymmetric modal analysis method; and S60, carrying out response spectrum analysis. The liquid metal reactor can be accurately and effectively simulated to consider the liquid shaking effect, the dynamic coupling problem of liquid metal and the structure is solved, and a simple, accurate and reliable analysis method is provided for dynamic analysis of a reactor body considering liquid shaking under earthquake excitation.

This invention discloses a method for non-uniform excitation input analysis in numerical simulation of building structures under dual-control vibration control. The method includes: 1) obtaining the acceleration time histories of each column base using a column base acceleration time history interpolation method based on spectrum analysis; and 2) applying a stiffness-controllable spring-damping system in the acceleration input direction, based on the traditional large-mass method, to form a stiffness-adjustable spring-damping system constrained large-mass method to control nodal displacement deviations. This method can synergistically solve the key challenges of non-uniform excitation simulation and displacement control, significantly improving the accuracy of seismic response analysis under complex soil-structure interactions. It is applicable to building structures with high seismic safety requirements, such as large-span spatial structures, bridge engineering, and underground complexes, as well as to the dual-control vibration simulation analysis of buildings adjacent to urban rail transit systems and factory structures of ultra-large seismic simulation shaking tables.