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7619 results about "Earthquake resistant" patented technology
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Building structure anti-seismic performance monitoring method and system
The invention relates to the field of building structure safety detection, and discloses a building structure anti-seismic performance monitoring method and system. The method comprises the following steps: acquiring multi-source response data such as acceleration, displacement, strain and inclination angle; obtaining a structure standard response based on wavelet denoising and standardization processing; adopting a multi-order modal recognition algorithm to extract structural dynamic characteristic parameters; performing structural damage evaluation based on the modal change index, and combining the yield strength, the load index and the displacement margin to calculate the residual bearing capacity of the structure; and finally, outputting an anti-seismic grade early warning signal. The system comprises a structure response acquisition module, a modal identification and damage evaluation module and a residual bearing capacity calculation and early warning module. According to the method, real-time quantitative analysis of the performance of the structure under the earthquake or load effect can be achieved, the evaluation precision is high, the applicability is high, and the wide engineering popularization value is achieved.
Owner:PINGMEI SHENMA CONSTR GRP FIRST CONSTR ENG CO LTD +1
Recycled concrete wall material and preparation method thereof
InactiveCN119390404Areduce miningReduce ecological damageSolid waste managementFiberEarthquake resistance
The invention relates to the technical field of concrete wall materials, and discloses a recycled concrete wall material and a preparation method thereof, the recycled concrete wall material comprises the following components by weight: 300-500 parts of recycled coarse aggregate, 200-400 parts of recycled fine aggregate, 150-300 parts of cement, 30-80 parts of fly ash, 3-8 parts of a water reducer, 5-15 parts of reinforced fiber, and 20-30 parts of a modified composition. Comprising the following steps: S1, raw material pretreatment, S2, mixing and stirring, S3, molding and curing, and S4, quality detection. The building waste is efficiently utilized, exploitation of natural aggregate is reduced, energy consumption and carbon emission in the production process are reduced, the landfill amount of the building waste and land occupation are reduced, the material strength and durability are good, the waterproof performance is improved, and the crack resistance and seismic resistance of the wall are enhanced.
Owner:JIANGSU HUASHENG NEW BUILDING TECH CO LTD
BIM-based system and method for evaluating seismic performance of building structure
PCT designated stageWO2025168157A1Geometric CADSpecial data processing applicationsEvaluation resultElement analysis
The present application relates to the technical field of seismic performance evaluation for building structures, and in particular to a BIM-based system and method for evaluating the seismic performance of a building structure. The method comprises: acquiring BIM data of a target building structure, and extracting geometric features and material properties thereof; on the basis of the geometric features and the material properties, generating a finite element analysis model under multiple load cases; performing dynamic response simulation on the finite element analysis model to obtain key performance indicators under the load cases; and on the basis of the key performance indicators combined with preset evaluation criteria, outputting an evaluation result of the seismic performance of the building structure. The present application can improve the automation level, application scope and accuracy of seismic performance evaluation, and also realizes the comprehensive analysis of complex building structures.
Owner:CHONGQING COLLEGE OF FINANCE ECONOMICS
Ancient building anti-seismic performance analysis and evaluation system based on BIM modeling
ActiveCN120408816AGeometric CADDesign optimisation/simulationEarthquake resistanceDynamical optimization
The invention relates to the technical field of building information, and discloses an ancient building anti-seismic performance analysis and evaluation system based on BIM modeling, and the system comprises a building parameter obtaining module which is used for dynamically collecting component material attributes, structure connection states and historical damage parameters, recognizing structure weak links, and triggering a collaborative evaluation instruction; the modal feature analysis module and the seismic response simulation module are used for respectively extracting vibration modal feature parameters and seismic wave energy distribution parameters to obtain modal feature integrity indexes and dynamic stability evaluation values; the multi-source fusion judgment module synthesizes the indexes to generate a structure reinforcing or component repairing signal; the optimization parameter generation module is matched with the anti-seismic optimization strategy and generates structure reinforcement and node connection repair parameters; the system further comprises a damage coupling analysis module and a model iteration updating module, and monitoring of historical damage evolution and closed-loop updating of the BIM model are achieved. According to the system, precise evaluation and dynamic optimization of the anti-seismic performance of the historic building are realized.
Owner:MINNAN INST OF SCI & TECH
Anti-rolling and anti-seismic maritime work crane
ActiveCN119612380Areduce offsetImprove stabilityVibration suppression adjustmentsLoad-engaging elementsWinchDistance sensors
The invention relates to the technical field of maritime work cranes and discloses an anti-rolling and anti-seismic maritime work crane which is characterized in that a rack swing wall is arranged at the upper end of a rack column, a winch is arranged on the end side of the rack swing wall, and a main traction rope is arranged in the winch; the lower end of the main traction rope is fixedly connected with a top plate, and the lower side of the edge end of the top plate is fixedly connected with a fixing plate. According to the anti-shaking and anti-seismic maritime work crane, when the device drives a heavy object to move upwards and the heavy object shakes and deviates, an extrusion plate on the side can be extruded, at the moment, the distance between the extrusion plate and a side plate is changed, the moving distance of the heavy object can be judged through a distance sensor, and when the moving distance of the heavy object is large, data can be transmitted to a controller; and therefore, a worker is reminded that the heavy object deviates, potential safety hazards exist, the traction and pulling state of the auxiliary traction rope on the fixing plate is stressed outwards, the shaking performance of the single main traction rope during hoisting operation of the heavy object is reduced, and the stabilization effect is good.
Owner:TIANJIN JINDAO MARINE SERVICE CO LTD
Multi-dimensional seismic risk assessment method based on seismic oscillation space-time distribution
The invention relates to a multi-dimensional seismic risk assessment method based on seismic oscillation space-time distribution. The method comprises the following steps: S1, selecting IM indexes; s2, key structure parameters are extracted; s3, recording an engineering demand parameter EDP; s4, selecting an optimal IM index; s5, establishing an agent model of structural seismic response; s6, establishing an earthquake prediction equation; s7, establishing an aftershock risk analysis model; s8, obtaining aftershock intensity samples of the positions of the target structures; s9, obtaining an aftershock vulnerability curve; and S10, determining repair time and repair cost according to the repair of the structure and the repair of the structure function so as to finally determine the total repair cost of the structure of the regional line and the anti-seismic capacity after repair. Compared with the prior art, the method has the advantages of improving the accuracy of earthquake risk estimation and the like.
Owner:TONGJI UNIV +1
Beam bridge dynamic anti-seismic performance evaluation method and system
InactiveCN119475921AEfficiently evaluate earthquake resistanceImprove efficiencyGeometric CADDesign optimisation/simulationElement modelArchitectural engineering
The invention relates to the technical field of bridge maintenance, in particular to a beam bridge dynamic anti-seismic performance evaluation method and system, and the method comprises the steps: model preparation, model establishment, boundary condition and load application, analysis and calculation, and result analysis and evaluation. According to the method, through detailed data collection and model preparation, a detailed finite element model of the bridge is accurately constructed, actual characteristics of a main beam, a pier, a support and other key components are fully considered, boundary conditions are reasonably set, seismic loads are applied, calculation is performed by adopting a proper anti-seismic analysis method, and the seismic response of the bridge is effectively calculated; the method has the advantages that the method is simple, the anti-seismic performance of the bridge under the earthquake action is evaluated, potential weak parts of the bridge under the earthquake action are accurately identified, reliable basis is provided for formulating targeted anti-seismic reinforcement measures, and the efficiency and reliability of anti-seismic analysis and performance evaluation of the bridge structure are remarkably improved.
Owner:LANZHOU JIAOTONG UNIV
Building earthquake damage scene construction method and system based on unmanned aerial vehicle remote sensing image
ActiveCN120318435AEnsemble learningCharacter and pattern recognitionNonlinear modelThree-dimensional space
The invention provides a building earthquake damage scene construction method and system based on an unmanned aerial vehicle remote sensing image, and relates to the technical field of urban earthquake resistance and disaster prevention, and the method comprises the steps: constructing a three-dimensional space model of a building through an urban earthquake damage simulation system, and determining the nonlinear model parameters of the building; carrying out earthquake damage scene construction by taking a single building as granularity by adopting an elastic-plastic time-history analysis method, and determining a building damage index; according to a mapping relation between a preset building damage index and a building earthquake damage risk level, determining an earthquake damage risk level of each building; and according to the building list, the anti-seismic performance of the building with the specified earthquake damage risk level is detected, and anti-seismic measures corresponding to the building with the specified earthquake damage risk level are generated. According to the geometric attribute information of the building, the three-dimensional space model is constructed in combination with the urban earthquake damage simulation system, the earthquake damage risk level of the single building is accurately divided, and the refinement level of urban earthquake resistance and disaster prevention is improved in combination with earthquake resistance measures.
Owner:SHANDONG LUZHEN TECHNOLOGY ENGINEERING CO LTD +1
Building structure anti-seismic toughness optimization method and system based on deep learning
The invention discloses a building structure anti-seismic toughness optimization method and system based on deep learning, and relates to the technical field of anti-seismic toughness optimizing.In operation of the system, a sensing network is deployed, multi-dimensional dynamic response parameters in the vibration process of a building structure are collected, preprocessing and sliding window characterization are carried out on a collected parameter set, and the anti-seismic toughness of the building structure is optimized; encoding the input tensor TXF, extracting a deep space-time coupling feature generation coefficient, performing multi-dimensional composite calculation on an anti-seismic stress energy coefficient SEC, a response co-motion coefficient RSC and a damage evolution index DEI to generate a system-level evaluation core index toughness spectrum evolution index REX, and comparing the toughness spectrum evolution index REX with a preset threshold value to obtain the evaluation core index. Grading and risk positioning are carried out on the current state of the building structure, a generated control strategy is sent to an execution layer, a damping adjusting device, a shock insulation layer controller or component repairing equipment is linked to complete structure regulation and control, and response is carried out after real-time acquisition and optimization.
Owner:XIAN AERONAUTICAL UNIV
Railway beam bridge anti-seismic toughness evaluation method and system
The invention discloses a railway beam bridge anti-seismic toughness evaluation method and system, relates to the technical field of bridge engineering structures, and solves the technical problem that the prior art lacks an anti-seismic toughness evaluation method suitable for a railway bridge. The method comprises the following steps: establishing a full-bridge nonlinear finite element model to carry out vulnerability analysis; according to a vulnerability result, weighting and quantifying a component damage state and a passage function damage state by adopting a damage probability; determining post-earthquake repair time and a function recovery value, obtaining a post-earthquake bridge passing function recovery curve, finally obtaining a toughness index of the bridge, and dividing the function state of the bridge into three grades; according to the method, a whole process solution of'bridge design parameter-nonlinear time history analysis-probability earthquake demand model-vulnerability analysis-passage function recovery-toughness index-earthquake resistance toughness three levels' of the railway beam bridge is provided, and reference is provided for pre-earthquake design and post-earthquake emergency repair decision.
Owner:SOUTHWEST JIAOTONG UNIV
Bridge transverse quasi-seismic-isolation multistage ordered anti-seismic construction method
The invention relates to the technical field of bridge seismic resistance, in particular to a bridge transverse quasi-seismic isolation multistage ordered seismic resistance construction method, which is used for determining performance targets under three levels according to seismic fortification requirements of a bridge structure under earthquakes with different strength levels, and providing a reasonable mechanical parameter valuing method of a steel stop block. A quasi-seismic isolation bridge multi-stage seismic fortification mechanism is established, the seismic potential of each component is exerted in sequence, the seismic damage degree of the bridge can be controlled and reduced according to an expected performance target, the phenomenon of beam falling of an upper structure of the bridge can be effectively prevented, and therefore a multi-stage ordered seismic isolation and seismic fortification mechanism is achieved.
Owner:CHONGQING THREE GORGES UNIV
Anti-seismic safety evaluation method
The invention provides an anti-seismic safety evaluation method, relates to the field of anti-seismic safety evaluation of high arch dams, and establishes a finite element mesh model which is more in line with the real situation and comprehensively considers coupling of dam body damage and potential sliding block sliding instability damage of a dam abutment. A concrete damage evolution curve is obtained based on a concrete material dynamic mechanical test, the maximum credible seismic oscillation is scaled to a plurality of seismic oscillation intensity levels according to a certain proportion by adopting an incremental dynamic analysis method, a series of nonlinear dynamic response analysis under different overload coefficients is carried out, and the maximum credible seismic oscillation intensity level is calculated according to an analysis result. An anti-seismic performance evaluation index which is easier for actual engineering monitoring and can comprehensively characterize coupling of two failure modes is provided, a fitting curve of relative residual displacement along with the change of an overload coefficient is established, and a method for quantitatively dividing different failure levels is provided. The development of high arch dam-foundation system anti-seismic safety evaluation from only consideration of a single failure mode to comprehensive consideration of coupling of multiple failure modes is developed and promoted.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES
Shield tunnel anti-seismic toughness evaluation method and device and electronic equipment
ActiveCN119514265Aimprove accuracyGeometric CADData processing applicationsElement modelShield tunneling
The invention discloses a shield tunnel anti-seismic toughness evaluation method and device and electronic equipment. The method comprises the following steps: establishing a grid, defining a material unit and setting a boundary, and establishing a tunnel finite element model; a seismic oscillation-input model is selected, and according to the tunnel finite element model, seismic vulnerability analysis is carried out after response is obtained; determining structure recovery information according to the result of the earthquake vulnerability analysis; determining a tunnel performance function curve and a function recovery curve by combining a function recovery function of the structure according to the structure recovery information; and performing tunnel toughness evaluation according to the function recovery curve to obtain an evaluation result of tunnel anti-seismic toughness. According to the embodiment of the invention, based on the anti-seismic toughness design, the influence of the seismic oscillation intensity and structural factors on the shield tunnel damage is evaluated, the time and cost of function recovery after the earthquake are quantitatively reflected, and the technical gap of an existing toughness evaluation method in the aspects of shield tunnel economic loss and recovery time calculation is solved; the method can be widely applied to the technical field of computers.
Owner:GUANGZHOU UNIVERSITY
Method for rapidly evaluating anti-seismic performance of bridge network based on capability spectrum analysis
PendingCN120493365AGeometric CADDesign optimisation/simulationCapacity spectrum methodCapacity spectrum
The invention discloses a bridge network anti-seismic performance rapid evaluation method based on capability spectrum analysis. The method comprises the following steps: firstly, carrying out finite element modeling on bridges in a regional bridge network needing to be analyzed by using OpenSees, extracting piers, and carrying out vulnerability analysis on the piers; a bridge vulnerability curve is obtained based on a capacity spectrum method, then the failure probability of the bridge in a certain damage state serves as a post-earthquake damage index, and the bridge failure probability is replaced by the post-earthquake failure probability of the corresponding road section; after the post-earthquake failure probability of each road section exists, all paths between a starting point and an ending point, namely, to-be-researched OD pairs in a network area are analyzed, the passing probability of each path after the earthquake is calculated based on the Bayesian theorem and an event independence calculation method, all the paths under the OD pairs are sorted according to the passing probability, and therefore the optimal passing path is obtained; and the path with small passing probability is avoided. According to the invention, a scientific basis is provided for regional bridge network anti-seismic planning and emergency management.
Owner:LANZHOU JIAOTONG UNIV
Method and system for evaluating anti-seismic effect of high-rise shear wall structure
The invention discloses a high-rise shear wall structure anti-seismic effect evaluation method and system, and particularly relates to the technical field of high-rise shear walls. The method comprises the following steps: accurately collecting low-cycle fatigue parameters, constructing a concrete and steel bar degradation model considering a fatigue effect, applying the model to anti-seismic analysis of a shear wall structure, simulating the influence of main shock and multiple aftershock loading on structural performance, drawing a bearing capacity degradation curve according to multiple loading results, and analyzing a degradation speed abnormal state. The risk that the structural rigidity and the bearing capacity are abnormal is judged by combining the change of the residual rigidity and the bearing capacity, the risk is divided into high, medium and low levels, and proper reinforcement or prevention measures are provided for different risk levels, so that the defect that the material fatigue effect is not fully considered in the existing anti-seismic evaluation is effectively overcome, and the anti-seismic evaluation accuracy is improved. According to the method, the damage accumulation condition of the high-rise shear wall structure in frequent aftershocks can be predicted more accurately, so that the risk of premature failure of the structure is reduced, and the durability and safety of a building in an earthquake are improved.
Owner:ARCHITECTURAL DESIGN RES INST OF GUANGDONG PROVINCE
Shield tunnel anti-seismic toughness evaluation method and system, terminal and storage medium
ActiveCN119577924Aimprove accuracyimprove rationalityGeometric CADDesign optimisation/simulationClassical mechanicsShield tunneling
The invention relates to a shield tunnel anti-seismic toughness evaluation method and system, a terminal and a storage medium, and relates to the technical field of tunnel engineering.The shield tunnel anti-seismic toughness evaluation method comprises the steps that tunnel disease parameters and tunnel design parameters of a shield tunnel are obtained; establishing a three-dimensional earthquake time history analysis model of the shield tunnel according to the tunnel disease parameters and the tunnel design parameters; evaluating the anti-seismic toughness of the shield tunnel according to the three-dimensional earthquake time history analysis model to determine a tunnel toughness coefficient of the shield tunnel; determining a tunnel toughness evaluation result according to the tunnel toughness coefficient and a preset toughness evaluation standard; determining a tunnel toughness recovery method according to the tunnel toughness evaluation result and a preset toughness recovery relationship; and associating and outputting a tunnel toughness evaluation result and a tunnel toughness recovery method. The method has the effect of improving the accuracy of the toughness evaluation of the shield tunnel.
Owner:SHENZHEN UNIV +1
BIM-based support hanger intelligent type selection and real-time collaborative design method
The invention relates to the technical field of building information models, in particular to a BIM (Building Information Modeling)-based intelligent model selection and real-time collaborative design method for supports and hangers. Comprising the following steps that S1, building, structure and electromechanical multi-professional BIM models and external data are integrated, and a foundation database of support and hanger model selection is constructed; and S2, based on a rule engine and a machine learning algorithm, automatically matching an optimal support hanger type and generating a parameterized model. Through multi-physics field coupling simulation, stress, displacement and other core indexes calculation, collision check and mechanical checking calculation are combined, layout and component specifications are dynamically adjusted, the reliability of the support hanger under the extreme working condition is ensured, the later reworking risk is reduced, and the anti-seismic indexes such as base shear force and interlayer displacement angle and the bearing indexes such as axial stress and bending stress are adopted, so that the reliability of the support hanger is improved. The performance of the support hanger is comprehensively evaluated, the failure problem caused by a single factor is avoided, and the safety and stability of engineering are greatly improved.
Owner:THE THIRD CONSTR CO LTD OF CHINA CONSTR THIRD ENG BUREAU
Cycle-Transform network-based main shock and aftershock shock resistance toughness rapid evaluation method and system
PendingCN119475849Agood precisionimprove accuracyBiological modelsDesign optimisation/simulationElement modelComputation complexity
The invention discloses a rapid assessment method and system for shock resistance toughness of main and aftershocks based on a cycle-Transform network, and the method comprises the steps: building a finite element model of a building structure, inputting a plurality of groups of earthquake accelerations of main and aftershocks into the model, and obtaining a database comprising a plurality of groups of accelerations and corresponding structure displacement responses; building a loop-Transform neural network, and carrying out the training and optimization of the loop-Transform neural network; inputting the main shock and aftershock sequence into the optimized cycle-Transform neural network, predicting the displacement response of the structure under the double amplitude modulation main shock and aftershock sequence, then obtaining the building damage probability corresponding to different earthquake intensities under the main shock and aftershock situation by using maximum likelihood estimation, evaluating the corresponding damage index, calculating the recovery time, and finally obtaining the building damage probability corresponding to the different earthquake intensities under the main shock and aftershock situation. A function recovery curve of the structure is predicted, and shock resistance toughness evaluation is completed. According to the method, the precision of structure accumulated damage prediction under the aftershock effect is improved, and the calculation complexity and time consumption of toughness evaluation under the main and aftershock earthquake scene are remarkably reduced.
Owner:SOUTHEAST UNIV
Simulation method and system for mechanical parameter prediction of rock mass structural plane of base-covering interface
InactiveCN119558098AReasonably constructedimprove accuracyEarth material testingDesign optimisation/simulationClassical mechanicsGeological survey
The invention provides a simulation method and system for mechanical parameter prediction of a rock mass structural plane of a base-covering interface, and relates to the technical field of geological survey, and the simulation method specifically comprises the following steps: collecting environmental parameters and material parameters, and calculating a physical influence index, an environmental adaptability index and a fracture stability index; performing a dynamic load test on the rock mass to obtain dynamic response data of the rock mass, constructing a structural anti-seismic prediction model according to a physical influence index, an environmental adaptability index, a fracture stability index and a dynamic response index, and generating a weight in the model through an analytic hierarchy process, and utilizing the structure anti-seismic prediction model to generate a structure anti-seismic index of the base-covering interface rock mass structure. According to the scheme, the mechanical characteristics of the rock mass can be comprehensively reflected, and the influence of environmental change on the rock mass performance is effectively considered, so that the scientificity of anti-seismic performance prediction is improved.
Owner:SHAOXING UNIVERSITY
Method for evaluating radiation hydrodynamic force of concentric cylindrical structure
PCT designated stage expiredWO2025097523A1Geometric CADDesign optimisation/simulationGoverning equationMechanical engineering
The present invention relates to the technical field of coastal engineering, and disclosed is a method for evaluating a radiation hydrodynamic force for a concentric cylindrical structure, comprising the following steps: S1, coordinate system establishment: establishing a cylindrical coordinate system orθz and a Cartesian coordinate system oxyz by taking the intersection of the center of a concentric cylindrical structure and a still water surface as the origin, where the z-axis is vertically upward; S2, flow field division: dividing the entire flow field into an outer domain and an inner domain; S3, perforated boundary condition assumption; S4, determining radiation velocity potentials of the inner domain and the outer domain by means of governing equations and boundary conditions; and S5, by means of the expressions of velocity potential functions of the inner and outer domains, determining first-order radiation forces, added masses and damping coefficients generated by the vibration of an inner cylinder and an outer cylinder. The method takes into account both the effects of seismic and radiation hydrodynamic forces, provides accurate structural response prediction, fills the technological gap in the field of seismic analysis of concentric cylindrical structures as breakwater units, and provides a reliable basis for engineering design.
Owner:TIANJIN RES INST FOR WATER TRANSPORT ENG MINIST OF TRANSPORT +1
Segmental assembly type railway high pier joint seismic toughness analysis method and system
ActiveCN120068484ASustainable transportationDesign optimisation/simulationSensitive analysisTensor decomposition
The invention provides an anti-seismic toughness analysis method and system for a segment assembly type railway high pier node, and relates to the technical field of computers.The method comprises the steps that basic parameters of a target segment assembly type railway high pier node are obtained, and the basic parameters comprise material parameters, pier body geometric parameters, seismic oscillation parameters and node response parameters; performing multi-physical field coupling tensor decomposition according to the basic parameters to obtain a multi-field coupling feature tensor; performing topological modeling according to the multi-field coupling feature tensor to obtain a time-varying graph structure model; performing damage evolution simulation according to the time-varying graph structure model to obtain an anti-seismic toughness quantitative index; according to the anti-seismic toughness quantitative index, a failure mode analysis result is obtained through modal sensitivity analysis and failure path extraction; and performing evaluation according to the failure mode analysis result to obtain a node anti-seismic toughness analysis result. According to the invention, by introducing the multi-physics field coupling tensor decomposition and time-varying graph structure model, the response of the node in a complex earthquake environment can be simulated more accurately.
Owner:CHINA RAILWAY ENG CONSULTING GRP CO LTD +2
Large-span bridge anti-seismic performance optimization and evaluation system based on digital twinning
The invention relates to a large-span bridge anti-seismic performance optimization and evaluation system based on digital twinning, and belongs to the field of computer and bridge engineering. The optimization and evaluation system comprises a data acquisition and pre-processing module, a model updating module and a performance evaluation and optimization module; the optimization and evaluation method comprises the following steps: identifying the modal and frequency of a structure, obtaining the modal shape and natural vibration frequency of a bridge, and establishing a digital twinborn model of an object bridge; and according to the multi-objective optimization design function, carrying out supercomputing driven damping device parameter optimization, outputting an optimal parameter combination, and controlling hierarchical response of the bridge in an earthquake. The artificial waves generated based on the design response spectrum of the bridge can fully consider the dynamic characteristics of the large-span cable-stayed bridge and the seismic oscillation characteristics of the design site; meanwhile, only time history analysis of single seismic oscillation is involved in the anti-seismic optimization design process, the calculation amount of optimization design is greatly reduced, the comprehensive influence of each nonlinear factor on the bridge seismic response is better considered, and the complexity of large-span bridge anti-seismic optimization is remarkably simplified.
Owner:SOUTHEAST UNIV
Anti-seismic simulation method for existing building by considering real damage state
PCT designated stageWO2026040994A1Geometric CADDesign optimisation/simulationEarthquake resistanceFiber
Disclosed in the present invention is an anti-seismic simulation method for an existing building by considering a real damage state. The method comprises: determining a quantified component damage index on the basis of an observed component damage state; determining a material damage index of a damaged component on the basis of the component damage index; determining key parameters of a constitutive law for a damaged material on the basis of the material damage index; establishing a finite element model of a damaged building on the basis of the constitutive law for the material of the damaged component; and assessing the seismic risk and anti-seismic performance of the damaged building on the basis of the finite element model. In the present invention, a constitutive law for a damaged material is incorporated into a fiber model in OpenSEES, so that rapid modeling of a damaged building can be realized, thereby effectively reproducing the real damage of an existing building; and by using a seismic vulnerability analysis method, rapid assessment of the seismic risk and anti-seismic capability of the existing building can be realized, thereby further providing support for formulating reasonable reinforcement and reconstruction strategies by related departments.
Owner:SOUTHEAST UNIV
Anti-seismic support for public building foundation and mounting process
PendingCN119593512AImprove installation stabilityfast installation workProtective buildings/sheltersShock proofingEarthquake resistanceArchitectural engineering
Owner:HENAN PROVINCE CONSTR GRP CO LTD
A system for enhancing the damping capacity and aseismic capacity of the underground integrated pipe rack
The invention discloses a system for enhancing the damping and aseismic capacities of an underground integrated pipe rack. It includes a pipe fixing assembly installed on the inner walls of the underground space on both sides. The assembly comprises multiple lifting frames arranged vertically and a lifting mechanism. The telescopic end of the lifting mechanism is fixedly connected to the lowermost lifting frame. One side of the lifting frame is slidingly connected to the inner wall of the underground space and features a recess for placing the pipe. A pipe holder inside the recess secures the pipe. During vibrations, the lifting frame slides on the inner wall, causing relative movement between adjacent pipe holders. The vibration is absorbed by the telescopic spring, preventing hard contact between the pipe and the vibration source. This reduces vibration and protects the pipe, thereby enhancing the aseismic capacity of the underground pipe rack.
Owner:CAO XIULING +1
Intelligent bracelet earthquake early warning service system and method
The invention discloses a smart bracelet earthquake early warning service system and method, and the method comprises the steps: collecting user physiological parameters and earthquake early warning signals, building a coupling relation between earthquake intensity parameters and user physiological features, and forming an individualized disaster bearing reference; performing gravity sensing detection in combination with the geographic position of the user and the anti-seismic grade of the building, analyzing the spatial relationship between the micro-inclination angle of the building and the position of the user, and generating gravity field risk features; analyzing a group movement mode through relative position changes among multiple bracelets, extracting movement coordination characteristics and direction coordination coefficients, and forming a displacement coordination early warning sequence; a disaster emergency coefficient is generated based on user motion coordination efficiency and protection response behaviors, a sound wave positioning network of a multi-device linkage trigger area is constructed, collaborative alarm and personalized evacuation guidance are realized, differentiated earthquake early warning services can be provided according to individual physiological features and environmental conditions, and the pertinence and effectiveness of early warning are improved.
Owner:FUZHOU BENYANG INFORMATION TECH CO LTD
Multi-structure novel auxetic metamaterial replaceable energy dissipation metal damper
InactiveCN120139562AProtective buildings/sheltersShock proofingClassical mechanicsEnergy consumption
The invention discloses a multi-structure novel auxetic metamaterial replaceable energy dissipation metal damper, and relates to the technical field of anti-seismic equipment, the multi-structure novel auxetic metamaterial replaceable energy dissipation metal damper comprises a fixing seat, through the fixing seat, plate-shaped auxetic supporting and columnar double-deformation mechanism novel auxetic metamaterial double structures are used for energy dissipation at the same time, so that the anti-seismic function is achieved; the building can be dynamically protected under the earthquake vibration impact effect; the modular replaceable energy consumption core body design is adopted, and quick disassembly and replacement of damaged components are achieved through the assembly type design; meanwhile, a self-adaptive displacement compensation structure is combined, and the stability of the main body structure is maintained in the continuous energy consumption process; according to the device, the anti-seismic reliability of a building structure in the whole life cycle is remarkably improved, the later operation cost is reduced through the maintenance-friendly design, and all-around performance optimization from earthquake protection to daily maintenance is achieved.
Owner:QUANZHOU NORMAL UNIV
Cross-activity fracture tunnel full life cycle service state dynamic analysis method and system
The invention discloses a cross-activity fracture tunnel full life cycle service state dynamic analysis method and system, relates to the technical field of numerical simulation, and solves the technical problems that the dynamic change of data in a tunnel full life cycle cannot be reflected and the service state analysis is inaccurate in the prior art. The method comprises the following steps: in a design period, establishing a tunnel-surrounding rock-fault three-dimensional refined model considering an internal structure of a fault and creep / stick-slip fault deformation characteristics, inputting collected initial parameters into a model database for numerical simulation, and carrying out preliminary design of seismic resistance and error resistance of the structure on the basis of a numerical simulation result; during the construction period, updating the database, inputting the model for re-simulation, changing the anti-seismic and anti-error design of the structure based on a new numerical simulation result, and preliminarily evaluating the service state of the tunnel; and in an operation period, predicting a dynamic data development trend by using the prediction model, inputting the dynamic data development trend into the numerical model for numerical simulation, and correcting a tunnel service state evaluation and emergency processing scheme according to a numerical simulation result.
Owner:SOUTHWEST JIAOTONG UNIV
Wall type-double column combined pier structure system
The invention relates to a wall type-double column combined pier structure system, and belongs to the technical field of bridge engineering. The structure system mainly comprises a cover beam, a swinging pier, a replaceable corrugated steel web wall, a pier bottom energy dissipation device, a swinging steel base, a bearing platform, an unbonded prestressed tendon and the like. A pier bottom energy dissipation device is arranged on the lower portion of the swing pier and composed of energy dissipation steel bars, an outer wrapping steel plate, a bottom steel plate and fixing lug plates. A replaceable corrugated steel web wall is arranged between two piers, and an upper flange plate is directly installed on a cover beam through embedded high-strength bolts and fixed to a bearing platform through a swing steel base. Unbonded prestressed reinforcements penetrate through the center positions of the swinging bridge piers. According to the structural system, a collaborative energy consumption-graded swing mechanism of'corrugated steel web wall deformation energy consumption-corrugated steel web wall swing-pier swing and energy consumption 'is formed under the earthquake action, earthquake energy can be dissipated more effectively, structural residual deformation is reduced, and the structural shock resistance and function restorability are improved.
Owner:BEIJING UNIV OF CIVIL ENG & ARCHITECTURE +2
Shield tunnel earthquake vulnerability analysis method considering surface overload influence
The invention relates to a shield tunnel earthquake vulnerability analysis method considering the influence of surface overload. The method comprises the following steps: determining the mechanical properties of a tunnel material and the physical and mechanical parameters of a soil layer; ground surface overload cases are investigated, and ground surface overload working conditions are determined; selecting seismic waves and carrying out one-dimensional field equivalent linear analysis on soil conditions; establishing a soil body-tunnel dynamic finite element numerical model considering earth surface overload; determining a seismic oscillation intensity index, a tunnel damage index and a damage state; and establishing a tunnel anti-seismic probability demand model under the influence of different surface overloads. And establishing a tunnel structure earthquake vulnerability curve under the influence of surface overload based on the key parameters. According to the method, based on a nonlinear incremental dynamic analysis method, a soil body-tunnel system finite element numerical model considering the surface overload influence is established, and the tunnel earthquake vulnerability and anti-seismic performance under different surface overload influences can be quantitatively evaluated.
Owner:TONGJI UNIV