1001 results about "Seismic resistance" patented technology

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.

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.

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.

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.

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.

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.

Disclosed in the present application is a cast-in-place prefabricated building formwork component suitable for columns or beams, comprising a columnar formwork and stirrups fixed to the formwork; the upper and lower ends of the formwork are provided with connection fitting parts that fit adjacent formworks; the formwork is defined by steel plates; the stirrups are jointly formed by the steel plates and rod-shaped members fixedly connected to inner side surfaces of the steel plates. In addition, further disclosed in the present application are a cast-in-place prefabricated building shear wall component and a cast-in-place prefabricated building floor slab component. A stress test result proves that structures such as columns and beams formed by the cast-in-place prefabricated building formwork component in the present application can have a better constraint effect on concrete cast inside, and particularly increase a constraint area, thereby improving the overall shear resistance and bearing capacity of buildings, and having great significance for seismic resistance of the buildings in earthquakes.

A buried CPVC cable protection tube with micro-anti-seismic function relates to the technical field of cable protection tubes, including a tube body, and a supporting mechanism and an anti-seismic buffer mechanism arranged in the tube body; the supporting mechanism includes a supporting frame, a fixing rod slidably mounted on the supporting frame, and a clamping rod connected to the fixing rod; the supporting frame is provided with a plurality of limiting holes corresponding to the clamping rod; a fixing hole is provided on the inner wall of the tube body corresponding to the fixing rod; the anti-seismic buffer mechanism includes a lower connecting frame fixedly mounted on the supporting frame, an upper connecting frame elastically connected to the lower connecting frame, an upper clamping plate elastically mounted on the upper connecting frame, a lower clamping plate elastically mounted on the lower connecting frame, and a lifting assembly for driving the upper clamping plate to move; the tube body and the anti-seismic buffer mechanism of the present invention are detachable designs, which are convenient for disassembly and maintenance. When only the tube body or the anti-seismic buffer mechanism is damaged and needs to be repaired or replaced, only the corresponding parts need to be disassembled or replaced, which is more convenient.

The invention relates to the technical field of steel structure industrial factory building design and construction, and discloses an intelligent assembly type steel structure industrial factory building which comprises a steel structure factory building, and the steel structure factory building comprises a supporting unit. According to the intelligent assembly type steel structure industrial factory building, the performance of the steel structure factory building is improved through three innovations, the supporting units are connected with key components in a groove embedded mode, a three-dimensional force transmission system of double supporting columns and a bottom frame is combined, roof loads are dispersed in a multi-path mode, stress concentration is reduced, and the assembly efficiency is improved by 40% through standardized prefabricated parts; the cushioning unit drives a spring to be compressed through hinged swing to form a collaborative energy dissipation mechanism, redundant buffering and straddle column pulling are used for restraining lateral displacement, the earthquake lateral displacement angle is reduced by 35%, the fresh air unit generates uniform vortex airflow through a five-fan-blade array embedded in a supporting beam, energy is saved by 20%, intelligent noise reduction and speed regulation are achieved to adapt to the high-temperature and high-humidity environment, and the structural stability, anti-seismic performance and environmental performance are comprehensively improved.

The invention provides a high-pile wharf anti-seismic toughness evaluation method and system based on finite elements, and relates to the technical field of high-pile wharfs, and the method comprises the steps: firstly constructing a finite element soil body model and a finite element wharf model at a high-pile wharf, and forming a finite element coupling model after coupling for simulating an earthquake situation under a real condition; after simulated seismic waves are applied to the finite element coupling model, the damage condition of the soil body, the damage index of the wharf, the energy dissipation of the wharf and the ductility coefficient of the wharf under the action of the seismic waves are analyzed respectively; wherein the damage index, the energy dissipation coefficient and the ductility coefficient are used for evaluating the damage degree, the energy absorption and consumption capacity, the deformation capacity and the ductility of the wharf respectively, fitting analysis is conducted on analyzed parameters, a comprehensive toughness evaluation index for reflecting the anti-seismic capacity of the high-pile wharf is generated, and finally the anti-seismic grade of the wharf structure is output. Workers are assisted to complete shock resistance toughness evaluation of the wharf, and the working efficiency is greatly improved.

The invention discloses a heating and ventilation indoor unit and a heating and ventilation system. The heating and ventilation indoor unit comprises a first box body, a second box body, a partition plate, a mounting frame and a centrifugal fan. The second box body is connected with the first box body, and the partition plate is arranged between the first box body and the second box body; the mounting frame is arranged in the first box body; the centrifugal fan is arranged in the first box body and comprises a volute, an impeller and a flange, the volute is installed on the installation frame and penetrates through the partition plate, the impeller is contained in the volute, and the flange is arranged on the volute and abuts against the partition plate. In this way, the gravity center of the volute is close to the installation position, and therefore the downward pulling force borne by the volute is reduced. Therefore, after installation, the position of the volute is not prone to deviation, the position stability of the volute is improved, the anti-seismic performance of the volute is improved, the position of the impeller in the volute is not prone to deviation, and therefore the wind field noise of the centrifugal fan area can be reduced.

The invention discloses a method for evaluating the performance of a friction pendulum type seismic mitigation and isolation support in a service state. The method comprises the following steps: S1, carrying out horizontal sliding displacement and vertical force detection on the friction pendulum type seismic mitigation and isolation support in service; s2, according to the detected data, the sliding interface friction coefficient mu of the service friction pendulum type seismic mitigation and isolation support is calculated; s3, according to the obtained sliding interface friction coefficient mu of the in-service friction pendulum type seismic mitigation and isolation support, anti-seismic performance indexes of the friction pendulum type seismic mitigation and isolation support are calculated, and the anti-seismic performance indexes comprise the horizontal rigidity and the effective damping ratio coefficient; and S4, according to the influence of the sliding interface state change and the horizontal rigidity change on the seismic damage state of the bridge structure, the anti-seismic safety risk of the friction pendulum type seismic mitigation and isolation support in the sliding interface state is graded. By means of the method, the sliding interface state and the specific friction characteristic of the friction pendulum type seismic mitigation and isolation support in the service state can be obtained, and therefore the anti-seismic performance of the friction pendulum type seismic mitigation and isolation support can be evaluated.

The invention relates to the technical field of structural seismic resistance, in particular to a bidirectional U-shaped plate energy dissipation reset damping support which comprises a supporting part, an energy dissipation part and a reset part, the supporting part comprises a support bottom plate, a rubber plate, a steel base plate and a support top plate, the rubber plate is fixedly arranged in the center of the support bottom plate, and the steel base plate is fixedly connected to the top of the rubber plate; the support top plate is arranged on the steel base plate in a horizontal sliding manner; the energy consumption part comprises four U-shaped plates arranged between the support bottom plate and the support top plate; the reset part comprises an inhaul cable, a steering block, a guide rod, a telescopic rod and an elastic element, the steering block is fixedly arranged on the support bottom plate, the guide rod is fixedly connected to the outer side of the steering block, the telescopic rod is arranged at the end of the guide rod in a sleeving mode, the elastic element is arranged between the telescopic rod and the steering block, and the two ends of the inhaul cable are fixedly connected to the ends of the telescopic rod respectively. The damping support integrates the vertical supporting function, the energy consumption function and the reset function, and the requirement for the vertical installation space is low.

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 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 utility model discloses a recoverable swing column for shock resistance, relates to the technical field of shock resistance of constructional engineering, and adopts the technical scheme that the recoverable swing column comprises a stand column, two energy consumption dampers and a rotatable column foot, each energy consumption damper comprises a clamping plate, a bottom connecting piece, a top connecting piece, an SMA energy consumption metal rod, a friction plate and a fastener, the energy dissipation damper is connected with the stand column through the top connecting piece, one end of the clamping plate is connected with the top connecting piece through a fastener, the other end of the clamping plate is connected with the bottom connecting piece through a fastener, and the number of the friction plates is two. Rotation constraint of a connecting interface of the main body structure and the foundation slab is relaxed through the energy dissipation dampers and the rotatable column feet, so that the structure rotates and rubs in a limited mode to dissipate earthquake energy, the energy dissipation dampers generate up-down sliding friction to dissipate the earthquake energy, and damage and residual deformation of the main body structure are reduced.

The invention relates to the technical field of anti-seismic performance evaluation of ECC jacketed combination columns, and particularly provides a quantitative evaluation method for anti-seismic performance indexes of an ECC jacketed combination column, which comprises the following steps of: calculating key anti-seismic performance indexes such as bearing capacity, accumulated energy dissipation, ductility coefficient and limit value of repairable interval, and combining weight analysis and importance coefficient adjustment to evaluate the anti-seismic performance indexes of the ECC jacketed combination column. A scientific and comprehensive anti-seismic performance evaluation system is established; a method for determining the damage point of the ECC jacket combination column is provided, and the damage state is accurately determined; reparability interval evaluation is particularly introduced, repair grades are divided based on residual deformation and Park-Ang damage indexes, and a basis is provided for post-earthquake maintenance decision making; the provided anti-seismic performance index evaluation index comprehensively considers different loading working conditions, and a clear engineering applicable threshold value is set, so that engineering personnel can quickly evaluate and optimally design; the method is of great significance to promotion of engineering application of the ECC jacket combination column.

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 present invention relates to a nuclear fuel assembly suitable for a small modular reactor (SMR), the nuclear fuel assembly comprising: a spacer grid (110) having 17x17 grid cells; a plurality of fuel rods (120) arranged in the grid cells of the spacer grid (110); guide tubes (130) arranged and fixed in the grid cells of the spacer grid (110); and an upper end fitting (140) and a lower end fitting (150) fixed to the upper end and the lower end of the guide tubes (130), respectively, wherein the guide tubes (130) are characterized in that eight guide tubes are arranged in the main axis directions (Ixx)(Iyy) with respect to the central cell of the spacer grid (110), four guide tubes are arranged in the diagonal direction (Ixy), and sixteen guide tubes are arranged in the non-diagonal directions (Ixxy)(Ixyy).

The utility model relates to a friction type quasi seismic isolation support, a bridge and a building body, comprising a spherical support used for forming a first plane friction pair with a building body cross beam, and further comprising an additional plane support used for being fixed on a building bottom pier and used for being supported between the spherical support and the building bottom pier; a second plane friction pair is formed between the additional plane support and the spherical support, and the friction coefficient of the second plane friction pair is larger than that of the first plane friction pair; the structure further comprises a plurality of fragile shear keys, the upper ends of the fragile shear keys are connected to the spherical support, and the fragile shear keys abut against the two opposite sides of the additional plane support in the midspan direction of the building cross beam in a limited mode. According to the utility model, the upper structure of the building body can be prevented from being easily lifted when the building body suffers from a rare earthquake, the building body is prevented from losing the shock resistance after the rare earthquake, and the controllability of the friction coefficient is stronger.

The invention relates to the technical field of seismic resistance and transformation of civil engineering structures, and particularly discloses a novel quick replacement device and method for a seismic isolation support. Pre-pressing and accurate positioning of a new shock insulation support are achieved through the counter-force supporting frame and the pre-pressing system, rapid dismounting of an old or damaged shock insulation support and mounting of the new support are achieved, micro jacking can be conducted on an upper structure within a small disturbance range, the replacement efficiency is remarkably improved, and the construction risk is reduced.

The utility model discloses an anti-seismic energy-dissipation steel beam capable of being rapidly repaired after an earthquake, and relates to the technical field of structural engineering and structural seismic resistance. According to the design principle of strong joints, weak components, strong columns and weak beams, an energy-dissipation beam section is arranged between a column end steel beam and a steel beam and is also called a weakening section; according to the energy dissipation beam section, damage generated by an earthquake is concentrated in the section so as to preserve the structures at the two ends of the section, the energy dissipation beam section is simple in structure and easy to replace, when the section is damaged, the section can be cut off along the cutting line, and then a new weakening section is welded again along the cutting line so as to achieve rapid repairing work after the earthquake.

The invention relates to a transportation container for micro-reactor new fuel elements and a loading and unloading method thereof.The transportation container comprises an outer barrel, an inner barrel and an outer cover, the outer barrel and the inner barrel are coaxially arranged to form a double-layer heat insulation structure, a first interlayer of the outer barrel is filled with heat insulation materials, a second interlayer of the inner barrel is filled with air, and double fireproof heat insulation protection is constructed; due to the three-layer sealing design of the outer cover, the first inner cover and the second inner cover, the air tightness is further improved, leakage of the fuel element is prevented, and critical safety is ensured; the container is of a multi-rib-plate and shock absorber structure, the first rib plate, the third rib plate and the second rib plate improve the strength of the barrel and the strength of the outer cover respectively, the shock absorber further enhances the anti-seismic property, and transportation safety is guaranteed. The base is combined with the symmetrical check blocks, the positioning pins and the reinforcers, so that the stability and the bearing capacity of the container are enhanced. The invention further provides a simple, convenient, efficient and safe loading and unloading method which can be widely applied to transportation and storage of micro-reactor fuel elements.

The utility model discloses a glass curtain wall with a high-strength connecting structure, which belongs to the technical field of glass curtain walls, and is technically characterized by comprising a curtain wall main body, and the curtain wall main body is of a three-layer stacking structure through an arranged butt joint stable mounting mechanism. The transparent sound insulation film for sound insulation is arranged at the joint of the inner-layer curtain wall body and the outer-layer curtain wall body, so that the sound insulation performance of the glass curtain wall is improved, meanwhile, the butt-joint stable installation mechanism also prevents external dust and water from entering a butt-joint installation gap, installation sealing protection of the glass curtain wall is achieved, and the service life of the glass curtain wall is prolonged. In addition, the overall installation stability of the curtain wall is correspondingly achieved through the butt joint stable installation mechanism, the supporting strength and rigidity of the glass curtain wall in use are remarkably improved, the stability is high, vibration and pressure can be buffered and dispersed through the arranged pressure-resistant buffering mechanism, pressure-resistant protection of the glass curtain wall is achieved, the pressure-resistant and anti-seismic performance is high, and the service life of the glass curtain wall is prolonged. The connecting structure has the advantages of good connecting stability and high strength.

The invention relates to the technical field of bridge anti-seismic performance analysis, and particularly discloses a bridge anti-seismic performance real-time analysis method and system based on a graph neural network, and the method comprises the following steps: 1, constructing a bridge inter-span structure graph representation: taking each span of a bridge as a node in the graph, structural elements such as connecting beams and supports between the spans are used as edges between the nodes to form a structural diagram representation of the bridge; each node comprises cross geometric attributes, material characteristics and seismic load information as input characteristics, 2, encoder processing: converting the input characteristics of each node into a higher-dimension hidden embedded layer vi through a linear single-layer perceptron (SLP) by using an encoder, and providing appropriate input for subsequent information transmission and structure response prediction; according to the method, the bridge structure is converted into graph representation, the calculation efficiency is improved, the complexity of traditional finite element analysis is reduced, the method can adapt to different types of bridge structures, and the adaptability of the model is enhanced.

The invention discloses a quantitative evaluation method for the ultimate seismic capacity of a gravity dam. The quantitative evaluation method comprises the steps that S1, a gravity dam-foundation system finite element analysis model considering strength and stable damage at the same time is constructed; s2, scaling a design earthquake to different earthquake intensity levels by adopting an incremental dynamic analysis method; s3, carrying out multiple groups of nonlinear dynamic response analysis to obtain a strong shock response result of the gravity dam-foundation system; s4, based on the response result, constructing an evaluation index for representing the anti-seismic performance of the gravity dam-foundation system; and S5, constructing a broken line graph in which different performance evaluation indexes change along with different zoom coefficients, and determining the ultimate seismic capacity of the gravity dam according to the zoom coefficient corresponding to the maximum slope in the broken line graph. According to the method, gravity dam-foundation system anti-seismic safety evaluation is developed from a single failure mode and a single index to comprehensive consideration of multiple failure modes and multiple evaluation indexes, the synergistic effect of multiple failure mechanisms in actual engineering is reflected, and a theoretical basis is provided for anti-seismic safety evaluation and risk management.

The invention relates to the technical field of suspension bridge anti-seismic performance evaluation, in particular to a method for comprehensively evaluating the anti-seismic performance of a suspension bridge based on a seismic oscillation intensity index. Seismic oscillation intensity indexes are selected as many as possible to comprehensively reflect the amplitude, frequency spectrum, duration and other characteristics of seismic oscillation, and corresponding structural response indexes are determined for different structural members and sections of the suspension bridge; effectiveness, sufficiency and practicability analysis is carried out, and an optimal seismic oscillation intensity index for predicting response of different structural members of the suspension bridge is determined, so that the method is different from a method based on a single Sa (T) value in a traditional method; establishing seismic vulnerability curves of different structural members and sections based on the optimal seismic oscillation intensity index, giving a general fitting expression, and determining dangerous members and sections; meanwhile, the influence of different seismic oscillation input angles on the anti-seismic performance of the bridge is considered, so that the anti-seismic performance of the suspension bridge is comprehensively evaluated.

The invention discloses a socket type connecting structure of a steel sleeve prefabricated pier column and a bearing platform and a construction method. The socket type connecting structure comprises the prefabricated bearing platform; a socket groove is formed in the prefabricated bearing platform, a corrugated steel pipe is fixedly arranged on the inner wall of the socket groove, an anchoring steel plate is embedded in the bottom of the socket groove, an embedded section of a steel sleeve is embedded in the prefabricated bearing platform and arranged on the top of the anchoring steel plate, and an anchoring ring plate is arranged on the upper portion of the steel sleeve and connected with the anchoring steel plate through a pre-stressed anchor rod. The embedded section of the prefabricated pier column is arranged in the steel sleeve, the portion, below the anchoring ring plate, of the steel sleeve and the interior of the socket groove are filled with the high-strength mortar, and the portion, above the anchoring ring plate, of the steel sleeve is filled with the ultra-high-performance concrete. Through the synergistic effect of the steel sleeves, the pre-stressed anchor rods, the high-strength mortar, the ultra-high performance concrete and the like, the problems of too large depth, poor anti-seismic performance and the like existing in traditional socket and spigot joint type connection are effectively solved, and the connection performance of the prefabricated bridge pier is remarkably improved.

The invention relates to the related technical field of anti-seismic performance detection devices, in particular to a novel anti-seismic performance detection device for a prestressed tenon-and-mortise combined framework, which comprises a bottom plate, a bracket is mounted above the bottom plate, a vibration mechanism is arranged in the middle of the upper part of the bottom plate, and a mounting groove is formed in the surface of the vibration mechanism. A mounting groove is formed in the bottom plate, a frame is mounted in the mounting groove, a mounting sleeve sleeves the surface of the frame, a pressure detection mechanism is arranged above the support, and a buffer mechanism is arranged at the bottom of the bottom plate. According to the novel anti-seismic performance detection device for the prestressed tenon-and-mortise combined frame, multi-direction vibration loading can be achieved through the arrangement of the vibration mechanism, meanwhile, vibration stability is guaranteed through spring buffering and limiting guiding, a vibration environment better fitting an actual earthquake scene is provided for the frame, the accuracy of detection data is improved, and the detection efficiency is improved. And through the arrangement of the buffer mechanism, violent resonance between the equipment and the ground is avoided, and the accuracy of vibration response data acquisition is guaranteed.

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.