2502 results about "Earthquake resistant" patented technology

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.

The invention relates to the technical field of computer-aided anti-seismic analysis, and discloses an anti-seismic performance simulation test method and system for a concrete-filled steel tube structure, and the method comprises the steps: obtaining a parameter set of the concrete-filled steel tube structure; identifying a critical buckling mode and constructing a defect correction model; constructing a coupling damage index; constructing a numerical instability risk evaluation value based on the structure energy proportion; carrying out strong earthquake nonlinear time-history iterative solution; and outputting the anti-seismic performance index set and the coupling failure area. Compared with the prior art, the technical problem that Newton iteration divergence is prone to occurring in numerical solution under the coupling instability condition that traditional nonlinear finite element analysis is relied on for strong earthquake response calculation, especially when a steel pipe is subjected to local buckling and core concrete enters a high-pressure three-axis stress state is solved. Due to the fact that the local buckling and crushing damage coupling index and the self-adaptive time step length adjusting mechanism are constructed, the stability of the anti-seismic performance simulation result of the concrete-filled steel tube structure under the strong earthquake effect is improved.

The invention discloses a circular wooden column-hole-hidden graphite hardwood-graphite layer-along-column foundation stone seismic isolation system which is mainly used for seismic isolation and self-resetting of the bottom of a wooden structure circular wooden column. The shock insulation system is composed of a round wooden column, hole-hidden graphite hardwood, concave spherical surface belt limiting edge column foundation stone, a graphite layer and an annular tempered glass sealing plate. The hole-hidden graphite hardwood is composed of a convex spherical section, a thick cylindrical section, a graphite-hidden hole and a thin cylindrical connecting key which are integrally processed, and the thin cylindrical connecting key is inserted into the round hole in the bottom of the round wooden column to achieve positioning butt joint. The graphite layer can reduce the friction force between the convex spherical surface of the hole-hidden graphite hardwood and the concave spherical surface of the column foundation stone. The concave spherical surface of the column foundation stone enables the round wooden column to reset automatically after an earthquake, and the limiting edge of the column foundation stone can limit excessive displacement of the bottom of the round wooden column in the vibration process. And the annular toughened glass sealing plate can be sealed and waterproof. The seismic isolation system has the advantages of reducing the seismic action of an upper structure through bottom seismic isolation of the circular wooden columns and achieving structural toughness seismic resistance through self-resetting after an earthquake.

The invention relates to the technical field of anti-seismic performance detection, in particular to an anti-seismic performance detection method and system for an assembled steel-wood composite structure, and the method comprises the steps: arranging a multidirectional acoustic emission sensor in a steel-wood structure node area, applying simulated seismic vibration, and synchronously collecting acoustic emission signals; the method comprises the following steps: preprocessing collected acoustic emission signals, dividing the acoustic emission signals into signals corresponding to microcracks and contact slippage, respectively calculating an energy attenuation rate and a phase offset, and constructing a matrix; micro-impact is applied to the steel-wood node through an electromagnetic excitation device, a response signal is collected, resonant frequency is extracted, the drift distance between the resonant frequency and a reference value is calculated, and the severity of interface damage is determined according to the value of the drift distance; the damage correlation index calculation takes the characteristic value of the interface wave propagation characteristic matrix and the resonance frequency drift distance as input, the damage correlation index is calculated through the correlation coefficient, and the damage grade is divided according to the correlation coefficient. And differential characterization of different damage types is realized through the interface wave propagation characteristic matrix.

The invention provides a node connecting structure of a fabricated building and a construction method of the node connecting structure, and relates to connecting nodes for splicing prefabricated concrete columns with foundation column piers, ground beams, interlayer beams, top beams and columns. Beam column connecting joints connected with the ground beams are located at the position 0.6-1 m below the ground layer, and inter-column connecting joints are located at the position 0.9-1.2 m above the elevation of the middle axis of the interlayer beams. Each node adopts a built-in box-type steel pipe or a steel tenon-and-mortise component and is fixed through tenon-and-mortise matching of a steel tenon and a steel mortise groove and a high-strength bolt, so that rapid and accurate assembly of the beam column or between the columns is realized; and after connection is completed, a formwork is erected in a node area, high-strength concrete is cast in place, and a steel reinforced concrete stress component is formed. And the shear bearing capacity, the integrity and the anti-seismic property of the joint are obviously improved. Meanwhile, components are prefabricated in a factory and assembled in a dry mode on site, construction is convenient and fast, quality is controllable, and the structure is suitable for assembly type buildings with high-rise and high-seismic fortification requirements.

The invention discloses a method and a system for quickly constructing a railway station structure engineering demand parameter matrix, which are characterized in that a time-history load function, a time-history load working condition and a ground acceleration of a railway station structure model are automatically created and set through a Python programming language on the basis of an application programming interface (API) opened by MIDAS Gen design software, and the time-history load function, the time-history load working condition and the ground acceleration of the railway station structure model are automatically established and set through a Python programming language. The method comprises the following steps of: firstly, carrying out time-history analysis on a plurality of key components, then carrying out elastic-plastic time-history analysis in batches, extracting a corner of a non-elastic hinge of the key components and interlayer acceleration of the floors, and finally, automatically assembling and forming an engineering demand parameter (EDP) matrix, so that the convenience and feasibility of shock resistance toughness evaluation of the railway station are remarkably improved.

The utility model relates to a sliding shock insulation modular building which comprises a module group forming a building main body. The building foundation is used for bearing the module group; the sliding layer is arranged between the module group and the building foundation and comprises an upper sliding interface and a lower sliding interface which are fixedly connected with the bottom of the module group and the top of the building foundation respectively, and a sliding medium arranged between the upper sliding interface and the lower sliding interface; and the sliding starting control part is connected with the module group and the building foundation and is used for controlling the sliding starting state. Compared with the prior art, the earthquake response of an upper modular building can be reduced, non-structural members in the modules can be protected, the module units are lighter in design, the connection between the adjacent modules is simpler, and the connecting structure adapts to the characteristics of various layouts and stress; the anti-seismic performance of the modular building is improved through simple sliding seismic isolation measures which are low in manufacturing cost and convenient to construct.

The invention belongs to the technical field of underground engineering and computer-aided engineering analysis, and particularly relates to an anti-seismic safety collaborative analysis method for multi-modal data of proximity tunnel engineering. By integrating engineering geology, structural design, construction monitoring and multi-level seismic oscillation data, a three-dimensional numerical model fusing geology and structural information is constructed. Firstly, refined simulation of the whole construction process and the operation static load is carried out, and a reference mechanical state is obtained; carrying out multi-task condition earthquake dynamic time history analysis on the basis, dynamically capturing dynamic response of surrounding rock and a structure, carrying out collaborative interpretation on static and dynamic analysis results, emphatically analyzing spatio-temporal evolution and connectivity risks of a tunnel anchor and an adjacent highway tunnel surrounding rock plastic zone, and extracting a plurality of quantitative collaborative indexes; and an interactive analysis report integrating a three-dimensional visual scene, a multi-dimensional comparison chart and a rule base-based safety interpretation conclusion is automatically generated, and systematic decision support is provided for seismic design, construction control and safety evaluation of proximity projects.

The invention provides a method for analyzing anti-seismic performance of a steel reinforced concrete frame structure in a construction process, which comprises the following steps: S1, establishing a time-varying calculation model of the steel reinforced concrete frame structure in the construction process, the time-varying calculation model being used for simulating structural incompleteness and boundary condition change in a construction stage; s2, analyzing the anti-seismic performance of the steel reinforced concrete frame structure in the construction process by adopting a time-history analysis method, wherein the time-history analysis is based on a seismic wave acceleration time-history curve; s3, according to the time history analysis result, determining an earthquake response change rule of the steel reinforced concrete frame structure in the construction process; and S4, according to the earthquake response change rule, a measure for improving the anti-seismic safety of the steel reinforced concrete frame structure in the construction process is determined.

The invention discloses an intelligent anti-seismic structure optimization design method and system for a high-rise building, and relates to the technical field of anti-seismic design of the high-rise building. A working condition database considering multidirectional seismic oscillation and soil-structure interaction is established in combination with seismic oscillation time history and site investigation parameters; constructing a structure model on the BIM platform, and importing frequency characteristics and load to generate a preliminary design; an inter-story displacement angle, a story acceleration, a plastic rotation angle and an energy dissipation ratio index are set in the model, an anti-seismic performance comprehensive function is constructed, constraints are set according to a standard limit value, the structure model is converted into an optimizable problem, and optimal design is achieved by iteratively calling a working condition database and automatically correcting key component parameters and damping arrangement. According to the method disclosed by the invention, the structural optimization design of the high-rise building under the multidirectional earthquake action is realized by establishing an earthquake working condition database and parameterizing structural modeling and performance function constraint.

The invention discloses a digital twinning long-span bridge earthquake wind vibration and vibration reduction and isolation system and method, the system takes a high-fidelity digital model for constructing a long-span bridge as a basis, comprises full life cycle monitoring and management of the bridge under earthquake, wind vibration and vibration reduction and isolation conditions, and is based on a sky-air-ground-water integrated ubiquitous sensing module. In combination with artificial intelligence algorithms such as deep learning and a pulse neural network, real-time state evaluation of a bridge structure, material nonlinear analysis, geometric nonlinear analysis, multi-point excitation and pile-soil-structure interaction simulation, wind-induced fatigue damage prediction, earthquake vulnerability evaluation and closed-loop control scientific decision based on an artificial intelligence body are realized. According to the invention, system support and method guidance can be provided for large-span bridge anti-seismic and anti-wind design, intelligent monitoring, operation and maintenance management and vibration reduction and isolation system optimization.

The utility model relates to an enlarged type metal composite viscoelastic damper. The bottom of a metal damper is fixedly connected with an enlarged type viscoelastic damper. The metal damper comprises a T-shaped core plate, L-shaped restraining plates are fixedly connected to the two opposite sides of the T-shaped core plate in the vertical direction, friction areas are arranged between the tops, located on the vertical plane, of the L-shaped restraining plates and the T-shaped core plate, fixing areas are arranged between the bottoms of the L-shaped restraining plates and the T-shaped core plate, and energy dissipation webs are arranged on the portions, between the fixing areas and the friction areas, of the T-shaped core plate. The amplified viscoelastic damper comprises an upper connecting plate, an amplifying lever is hinged to the lower portion of the upper connecting plate, an inner steel plate is hinged to the lower portion of the amplifying lever, the inner steel plate is connected with an outer steel plate through a viscoelastic layer, and the outer steel plate is hinged to the amplifying lever through a fulcrum shaft. The defects of a metal damper can be overcome under small earthquakes, good energy consumption is achieved, the amplifying damper can be protected against excessive displacement and failure under large earthquakes, the damper consumes energy in a multi-stage mode, and the anti-seismic performance of the structure is improved. The components are connected through bolts, are highly assembled and are convenient to replace.

The invention discloses a self-resetting multi-section prefabricated assembled pier and a construction method, the self-resetting multi-section prefabricated assembled pier comprises a prefabricated cover beam, a pier column and a pier bearing platform, the pier column is formed by splicing a plurality of prefabricated sections, and is connected with the prefabricated cover beam through the prefabricated section located at the top; the prefabricated bent cap is connected with the pier bearing platform through a prefabricated section located at the bottom in a bell and spigot joint mode, and the non-adhesive prestressed tendons are connected with the prefabricated bent cap and the pier bearing platform and provide self-resetting capacity for the pier. According to the multi-section prefabricated assembled pier with the self-resetting capacity and the construction method, the formworks are prefabricated in a unified mode in a factory, the efficiency is improved while the prefabrication and construction cost is reduced, the mode of prefabricated section splicing and shallow socket connection is adopted, construction in narrow and complex terrains is facilitated, prestressed tendons used for self-resetting are arranged, and the construction efficiency is improved. The overall anti-seismic performance is improved, the integrity, rigidity and bearing capacity of the assembled pier are improved, the service life is prolonged, and meanwhile the maintenance cost is reduced.

The invention relates to the technical field of railway earthquake safety, in particular to a rail-bridge system earthquake resistance evaluation method, a medium and equipment. The method comprises the following steps: establishing a finite element model of a track-bridge system; carrying out nonlinear time-history analysis on the track-bridge system under different working conditions; analyzing control factors of earthquake response of the track-bridge system; establishing a mapping relation between the seismic response of the track structure and the seismic response of the main beam; calculating the earthquake response of the main beam, and evaluating the earthquake displacement response of the track structure; and the anti-seismic evaluation of the track-bridge system is realized. Through the method, the method can be used for all high-speed railway bridge types and rails at present, the anti-seismic evaluation of the rail-bridge system based on the driving performance can be indirectly and quickly realized based on the mapping relation, a large amount of time-consuming and labor-consuming train-rail-bridge system finite element simulation calculation does not need to be carried out, and the calculation efficiency is improved. The efficiency is effectively improved, the cost is reduced, the calculation is simple and convenient, and the calculation result is accurate.

The invention discloses an interface enhanced composite shear wall based on a high-ductility cement-based material. The high-ductility cement-based composite materials are formed in edge constraint areas on the two sides of the shear wall, and the common concrete is formed in a core area in the middle of the shear wall. The interface separation net is a high-strength ribbed non-dismantling formwork net and is vertically arranged at the junction of the edge constraint area and the core area, the section of the interface separation net is in a periodic concave-convex wave shape or a stepped shape, and a macroscopic mechanical meshing interface is formed. The interface seaming ribs are U-shaped ribs and are horizontally arranged at the positions of the inter-rib slurry penetrating nets of the interface separation net in a penetrating mode, one ends of the interface seaming ribs are anchored to the edge constraint area common steel bars, and the other ends of the interface seaming ribs extend into the core area and are connected with longitudinal and transverse rib cross joints of the composite material grid ribs in a hooked mode; the problems of rigidity mutation and slippage of the heterogeneous material interface are solved by utilizing the geometric occlusion effect of the interface separation net and the anchoring effect of the deep bolt pins and joints of the interface sewing ribs, cooperative work of a high-ductility material and common concrete is achieved, and good anti-seismic performance is achieved.

The invention belongs to the technical field of geotechnical engineering disaster prevention and reduction and earthquake engineering tests, and relates to a vibration table test method considering time-varying deterioration of anti-seismic performance of an anchored rock slope. The method comprises the following steps: firstly, constructing a dynamic performance time-varying deterioration model based on an anchoring system interface bonding force and a free section steel bar yield resistance attenuation rule; physical equivalent simulation of interface degradation and component yield resistance reduction is realized by regulating and controlling the proportion of rock mass similar materials and utilizing a graded rigidity anchoring system. The core of the method is that before a vibration table applies seismic waves, attenuation of the anchoring performance of a supporting structure is actively simulated in advance, so that a real evolution path that the bearing capacity of an anchoring system is reduced firstly, slope stress redistribution and accumulated damage are caused, and then sudden seismic loads are suffered is reproduced; the limitation that only the static low bearing capacity is simply simulated in a traditional test is broken through. According to the method, space-time coupling of static time-varying degradation accumulation and transient earthquake dynamic action is effectively achieved, the problems of interface degradation simulation distortion and the like are solved, and a reliable test method is provided for dynamic stability evaluation and reinforcement design of a long-term service anchoring slope.

A green energy-saving cold store is provided, including a cold room, a platform, a machine room, and a refrigerating system. A drying layer (1) is arranged below the first floor of the cold room; a ground heat insulation layer (2) is moved downwards into the drying layer (1) and is separated from a first floor slab (3); an inner wall (4), an internal partition wall, and the wear-resistant waterproof floor (33) are directly located on the first floor slab (3) and integrated with a frame structure; a peripheral protective wall adopts a light steel structure wall surface (14), and is connected to the frame structure by means of ball joint tie beams (15) at the intersection points between frame beams and columns. The cold store is energy-saving and environment-friendly, and has good anti-seismic and fireproof performance.

The invention provides an adjustable energy-consumption-enhanced anti-seismic reinforcing system between pavilion-type wooden column frames, which belongs to the technical field of ancient building wood structure reinforcement and comprises an adjustable cross beam reinforcing system between common battledore columns and an adjustable energy-consumption-enhanced reinforcing system between columns. The adjustable cross beam reinforcing system between the common patting square columns comprises two sets of connecting assemblies I and a wood cross beam connected with the two sets of connecting assemblies I; the inter-column adjustable energy consumption reinforcing system comprises two sets of connecting assemblies II and a dovetail tenon beam connected with the two sets of connecting assemblies II. Through the synergistic effect of the adjustable cross beam reinforcing system between the common battlecolumns and the adjustable energy consumption reinforcing system between the columns, the anti-seismic performance of the pavilion type wood structure is remarkably improved, and meanwhile the original self-resetting characteristic and the use function of the pavilion type wood structure are effectively reserved.

To provide an aseismatic performance evaluation support device, an aseismatic performance evaluation support method and an aseismatic performance evaluation support program for more rationally evaluating the aseismatic performance of a building compared with a conventional technology.SOLUTION: The seismic performance evaluation support device 10 includes an acquiring unit 11A that acquires seismic motion group information indicating a plurality of types of seismic motion groups predetermined as seismic motion that may damage a building, and position information indicating a construction position of the building to be evaluated, a creating unit 11B that creates a fragility curve for each of the seismic motion groups by performing incremental dynamic analysis on the building using each of the plurality of types of seismic motion groups, a deriving unit 11C that derives a comprehensive fragility curve of the building by calculating a weighted average of the plurality of created fragility curves using a weighting factor indicating a ratio of a degree of influence at the construction position of each of the plurality of types of seismic motion groups, and a presenting unit 11D that presents information corresponding to the derived fragility curve.SELECTED DRAWING: Figure 4

The utility model discloses a corrugated plate self-resetting device suitable for a concrete filled steel tube latticed column, which comprises concrete filled steel tube column limbs, horizontal batten tubes and corrugated plate self-resetting devices, and the horizontal batten tubes and the corrugated plate self-resetting devices are alternately arranged between the two concrete filled steel tube column limbs; the corrugated plate self-resetting device is composed of a lug plate pair, a cover plate pair, a disc spring set, a split bolt set, a polytetrafluoroethylene plate and a viscoelastic plate. Under the action of a horizontal force earthquake, the concrete-filled steel tube column limb laterally moves to drive the lug plates to move up and down, the upper cover plate and the lower cover plate are pushed to be opened in the front-back direction through the meshing action of the corrugated plates on the lug plates and the corrugated plates on the cover plates, the disc spring sets on the split bolts are compressed to generate reset force, the upper cover plate and the lower cover plate are reversely extruded, and the lug plates and the concrete-filled steel tube column limb are pushed to reset. By means of the corrugated plate self-resetting device, earthquake residual deformation of the long and thin steel pipe concrete latticed column can be eliminated, stiffness mutation of a traditional tooth-shaped plate resetting device at the initial position is avoided, and the problem that the long and thin steel pipe concrete latticed column is insufficient in seismic toughness during an earthquake is solved.

The invention discloses a wall type Z-shaped metal torsion tube damper anti-seismic system and method. The wall type Z-shaped metal torsion tube damper anti-seismic system comprises a frame beam, a frame column, a cantilever wall and a Z-shaped metal torsion tube damper. The frame beams and the frame columns are connected with a building, the cantilever walls are connected with the frame beams, and the Z-shaped metal torsion tube dampers are arranged between the paired cantilever walls and connected with the cantilever walls so as to dissipate energy transmitted by the cantilever walls. According to the damper anti-seismic system, the Z-shaped metal torsion tube damper is arranged to replace a traditional mild steel metal damper and a viscous damper to conduct damping design of a building structure, the problem that the low-cycle fatigue performance of the traditional metal damper is poor is solved, the oil leakage risk of the viscous damper is avoided, and the anti-seismic performance of the building structure is improved. Moreover, due to the structural design in the damper, the influence of the bending and shearing effect on the deformation of the torsion tube under the action of an axial load is eliminated, so that the section of the torsion tube is always kept a stable circular section in the hysteresis energy consumption period of the torsion tube, and the energy consumption efficiency is ensured.

The utility model relates to the technical field of anti-seismic support and hanger machining equipment, in particular to a punching device for C-shaped steel machining, which comprises a mounting frame, a base fixedly mounted on the lower portion of the interior of the mounting frame, a hydraulic cylinder fixedly mounted on the mounting frame and located above the base, and a punch piece fixedly mounted at the output end of the hydraulic cylinder. A sliding area is formed in a punching area of the punch piece, a filing piece is longitudinally arranged in the sliding area in a sliding mode, and two adjusting assemblies used for controlling the sliding area to slide are symmetrically arranged at the position, located at the top end of the filing piece, of the sliding area. Through the arrangement of the filing part, the adjusting assembly and the touch assembly, continuous actions of punching and deburring are achieved in the same punching stroke through mechanical linkage of the punch part and the filing part, continuous micro-amplitude disturbance can be generated on the hole wall in the punching return stroke stage through low-frequency shaking of the punch part, hole diameter shrinkage caused by material springback is counteracted, and the punching precision is improved. And high-frequency micro-impact can be generated on the hole wall, so that a composite effect of sliding cutting and vibration crushing is formed.

The invention is suitable for the technical field of seismic analysis, and provides a cross-fault tunnel fault movement-seismic oscillation decoupling analysis method and device and a terminal. The method comprises the following steps: establishing a finite element model of a cross-fault tunnel-surrounding rock; based on the dual-objective optimization function of the seismic wave, determining the separation frequency of a fault movement component and a seismic oscillation component in the current seismic wave, and obtaining fault movement component data and seismic oscillation component data from the seismic wave in the simulation area; the fault movement component data and the seismic movement component data are converted into equivalent seismic loads; and applying the equivalent seismic load to the finite element model for finite element calculation, and determining the seismic response rule of the tunnel lining under the action of the seismic motion field and the fault displacement field. According to the method, the optimal separation frequency of the seismic oscillation component and the fault movement component is determined by using the dual-objective optimization function, so that the influence of different seismic wave components on the tunnel structure is researched, and a reference basis is provided for adopting targeted anti-seismic measures for tunnel seismic resistance.

The invention discloses a stone masonry house anti-seismic reinforcing structure and a construction method, and relates to the technical field of house reinforcing. The anti-seismic reinforcing structure of the stone masonry house comprises a wall body, and a door body reserved opening and a window reserved opening are formed in the surface of the wall body. According to the anti-seismic reinforcing structure for the stone masonry house and the construction method, the structural strength and anti-seismic performance of the house can be improved, during caulking, the two sealing blocks are driven by the moving module to move away from each other in a mortar joint, and at the moment, a grouting cavity can be formed among the mortar joint, the two sealing blocks and a sealing plate; a high-performance fiber-reinforced cement-based composite material UHP-ECC can be grouted into the grouting cavity, and the pressure is detected through the pressure sensor, so that the length of the caulking strip is convenient to control, the pressure of the caulking strip during grouting is convenient to control, the conditions that the caulking strip has bubbles and is not compact are avoided, waste of caulking materials is avoided, the caulking quality is guaranteed, and the caulking efficiency is improved. And the reinforcing quality is further ensured.

The invention discloses a reservoir water fluctuation propagation direct numerical simulation method and device in gravity dam anti-seismic analysis, a medium and equipment. According to the method, fluctuation propagation in reservoir water under combined incidence of P waves and SV waves is considered, a reservoir water-foundation site free field is analyzed and calculated on the basis of the fluctuation theory and the potential function theory, then the site free field is converted into node counterforce on fluid and solid boundaries on the basis of a fluid and solid power artificial boundary substructure model, and the reservoir water-foundation site free field is obtained. Applying node counterforce on the reservoir water-foundation artificial boundary, and directly performing numerical simulation on reservoir water-foundation site free field response; based on a static-dynamic artificial boundary conversion method, considering the influence of the static effect of the gravity dam-reservoir water-foundation system on the dynamic effect of the system, and constructing a gravity dam seismic oscillation input model for directly simulating reservoir water fluctuation propagation; according to the method, the anti-seismic analysis precision of the gravity dam is improved, and the limitations of single-wave incidence during reservoir water fluctuation propagation simulation, failure to consider the static effect and the like are overcome.

A method for seismic fragility analysis of a shield tunnel considering surface surcharge effects includes the steps of: determining mechanical property parameters of tunnel materials and physical-mechanical parameters of soil layers; investigating case studies of surface surcharge to define surface surcharge scenarios; selecting seismic waves and performing one-dimensional equivalent linear site response analysis on soil conditions; establishing a dynamic finite element numerical model of a soil-tunnel system considering surface surcharge; defining ground motion intensity measures (IM), tunnel damage measures (DM), and damage states (DS); and establishing probabilistic seismic demand models for the tunnel under various surface surcharge effects. Based on key parameters, seismic fragility curves for tunnel structures under surface surcharge effects are established. Through a nonlinear incremental dynamic analysis method, this method establishes the finite element numerical model of the soil-tunnel system, allowing for quantitative assessment of tunnel seismic fragility and seismic performance under various surface surcharge effects.

The invention provides a seismic isolation structure AMD control system based on the seismic energy storage principle, and relates to the technical field of structural engineering and damping control. The bottom of the building dissipates energy through the shock insulation support and the hydraulic inerter damper, earthquake input is converted into gravitational potential energy, mechanical energy and electric energy, and the energy storage module supplies energy to the active tuned mass damper arranged on the top of the upper structure. The system monitors structural response in real time through the acceleration sensor and the force sensor, the AMD intelligent control unit calculates and outputs control force capable of reducing upper vibration and generating reverse overturning bending moment, and therefore structural vibration is restrained and the shock insulation support is prevented from being pulled under the strong shock working condition, and the overall anti-seismic performance of the shock insulation structure is remarkably improved.

The invention relates to the technical field of building engineering, and discloses a building curtain wall design optimization method based on a BIM technology, and the method comprises the following steps: S1, obtaining and feedback: collecting climate data through a sensor, and carrying out the linkage with a BIM model; s2, building a BIM model: building the model on a BIM platform; s3, modeling: defining parameters based on the BIM model; s4, intelligent algorithm optimization: integrating energy efficiency and structure analysis tools, and optimizing energy efficiency and structure performance in real time; s5, design scheme optimization comparison: generating and evaluating a plurality of design schemes; s6, simulation and optimization: performing 4D construction simulation by using a BIM platform; and S7, real-time maintenance: carrying out real-time monitoring and maintenance. By integrating dynamic climate data, a BIM model and an intelligent optimization algorithm, multi-objective optimization of a building curtain wall system is realized, and the method can adaptively adjust design parameters, dynamically optimize energy efficiency according to a real-time environment, and enhance structural performances such as wind pressure resistance and seismic resistance.

The invention provides a single building earthquake damage assessment method, system and device and a medium, and relates to the technical field of building engineering earthquake resistance, and the method comprises the steps: obtaining the attribute data and earthquake motion parameters of each building in an assessment region; dividing the evaluation area into a plurality of seismic oscillation input blocks according to the spatial distribution of each seismic monitoring station; aiming at each single building in the vibration input block of each place, according to the attribute data of the single building, constructing a finite element mechanical model; inputting the seismic oscillation parameters corresponding to the single building into the finite element mechanical model, executing dynamic time-history analysis and calculation, and generating structural response parameters of the single building; and in combination with the structural response parameters and the attribute data of the single building, calculating a damage index of the single building, and according to the damage index, generating an earthquake damage assessment result of the single building. The technical effect of the invention is that the accuracy of the earthquake damage assessment result is improved.

The invention relates to the technical field of earthquake damage prediction, in particular to a mountain fallen layer structure earthquake damage prediction method based on machine learning, and the method comprises the steps: building a numerical model database of a mountain fallen layer structure; applying seismic oscillation excitation of different levels to each structure model in the numerical model database, and obtaining corresponding anti-seismic performance indexes through nonlinear time-history analysis; analyzing an influence rule of the structural design parameters on the anti-seismic performance based on the anti-seismic performance indexes; by taking the structural design parameters and the seismic oscillation parameters as input features and the seismic performance indexes as output features, constructing a mountain fallen layer structure seismic damage prediction model by adopting a machine learning algorithm; performing training optimization on the earthquake damage prediction model; and inputting structural design parameters and seismic oscillation parameters of a to-be-predicted structure into the optimized seismic damage prediction model, and outputting a corresponding seismic damage response prediction result. And the earthquake damage prediction efficiency and accuracy of the mountain building structure are improved.