816 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 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.

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 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 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 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 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 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.

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 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.

The invention discloses an anti-seismic property analysis method for a complex high-rise structure. The method comprises the following steps: determining a boundary range of a super high-rise building; the anti-seismic requirement of the over-limit high-rise building is determined, the height limit is determined based on different structural forms, and it is ensured that at least one aspect of the height, the height-width ratio and the body regularity of the house meets specifications and regulations; step 3, structural finite element modeling: based on the general situation of the constructional engineering, simplifying a finite element model to enable the finite element model to be consistent with an actual structure, and establishing the finite element model; 4, analyzing dynamic characteristics of the structure, wherein the inherent dynamic performance of the structure is reflected by the similar characteristics of the structure; and step 5, structural seismic response spectrum applying: applying the seismic response spectrum to the whole structure to research the maximum response of the structure under the seismic load effect of fortification intensity. According to the anti-seismic performance analysis method for the complex high-rise structure, multiple key aspects of super high-rise building boundary range determination, clear anti-seismic design requirements, structural finite element modeling, dynamic characteristic analysis, seismic response spectrum analysis and the like are comprehensively covered, and a set of systematic and complete analysis process is formed; and the anti-seismic performance of the complex high-rise structure can be deeply and carefully analyzed.

The invention provides an assembly type multistage energy consumption self-resetting energy dissipation support. The assembly type multistage energy consumption self-resetting energy dissipation support comprises a negative Poisson's ratio component plate, a transmission device and a self-resetting disc spring device, wherein the transmission device and the self-resetting disc spring device are symmetrically arranged on the two sides of the negative Poisson's ratio component plate; each transmission device comprises a Y-shaped piece and a fixing plate assembly, each Y-shaped piece is provided with a second transmission rod and two third transmission rods, a first-stage energy consumption device is connected between the two third transmission rods, and the two third transmission rods of the two Y-shaped pieces are connected through negative poisson ratio component plates; secondary energy consumption devices are respectively arranged between the connected third transmission rods; each self-resetting disc spring device comprises a first transmission rod, a belleville spring and two disc spring baffles, according to the self-resetting energy dissipation support, a first-stage energy dissipation area is formed by the Y-shaped piece and the first-stage energy dissipation device, a second-stage energy dissipation area is formed by the negative poisson ratio component plate and the second-stage energy dissipation device, self-resetting energy storage is provided by the belleville springs, and the self-resetting energy dissipation support can be used for energy dissipation. Therefore, multi-stage energy consumption and self-resetting are achieved, and excellent anti-seismic performance is achieved.

The invention provides a building design method and system based on multi-objective optimization. Wherein the anti-seismic property and the material stress dissipation efficiency of the building are improved through multi-objective optimization. The method comprises the following steps: firstly, collecting building structure parameters, such as cycle ratio, inter-story displacement angle, axial compression ratio, dynamic load simulation data and material stress wave propagation data; based on the data, a dynamic coupling factor between the structure parameter and the dynamic load is generated, and the matching relation between the axial compression ratio and the stress wave peak value propagation rate is adjusted. And carrying out collaborative optimization on the parameters by adopting a non-dominated sorting strategy to obtain an initial structure parameter combination. And finally, performing iterative correction by taking the dynamic load simulation data as a constraint condition, and generating a structure parameter combination meeting the requirements of seismic redundancy and stress dissipation balance. According to the technical scheme, the safety and stability of building design can be improved.

The invention relates to a deep learning-based structure anti-seismic performance evaluation system, which comprises a data acquisition module, a data preprocessing module, a feature extraction module, a numerical simulation module, a deep learning model training module, an evaluation and verification module, a visualization module and a model updating and maintenance module, the data preprocessing module is used for data preprocessing, the feature extraction module is used for data feature extraction, the numerical simulation module is used for simulating seismic response of a structure, the deep learning model training module is used for constructing a deep learning model, the evaluation and verification module is used for model evaluation and verification, and the visualization module is used for evaluation result display. And the model updating and maintaining module is used for updating and maintaining the model. According to the invention, an improved seismic data feature fusion extraction algorithm is proposed for feature extraction, an improved seismic perception depth state space network is proposed for model construction, and a better scheme is provided for a deep learning-based structure seismic performance evaluation system.

The invention discloses a wall body structure, and relates to the field of wall body structure construction, the wall body structure comprises a wall body, the top end of the wall body is connected with a connecting steel bar used for being connected with a fabricated top beam and used for limiting and stabilizing the wall body, the middle of the wall body is hollow, and the hollow cavity is filled with sound insulation and heat insulation foam; the upper portion and the lower portion of one side of each wall body are each provided with a tongue-and-groove groove, a connecting mechanism is arranged in each tongue-and-groove groove, the upper portion and the lower portion of the other side of each wall body are each connected with a limiting mechanism, and the connecting mechanisms and the limiting mechanisms are used for connecting every two adjacent wall bodies in a limiting mode. The wall body structure is light in weight and high in strength, rapid hoisting and splicing can be conveniently achieved, the construction time can be saved, and the construction progress can be accelerated; the wall structure has the purposes of heat preservation and heat insulation, and meets the requirement of green construction; the constructed wall body structure further has better anti-seismic performance and higher adaptability.

The invention relates to the field of structural reinforcement and new construction, in particular to a grid material oblique arrangement method for improving the shock resistance of a concrete structure. Comprising the following steps: preparing grids; the grids obtained in the step S1 are obliquely arranged on the surface of a concrete matrix; spraying a bonding layer on the upper part of the grid, so that the grid is bonded with the concrete matrix; scraping mortar on the upper part of the bonding layer; the fiber direction of the grid is changed to be approximately consistent with the main tensile stress direction of an earthquake, so that the fiber efficiently transfers force along a main stress trace line, the shear strength and stability of a concrete structure are improved, meanwhile, concrete is sprayed on the upper portion of the grid, a concrete base body and the grid are bonded together, a layer of mortar is further coated on the upper portion of the bonding layer in a blade coating mode, and the structure is compact. And the grid, the bonding layer and the mortar form a composite protective layer of the concrete structure, so that the stability of the concrete structure can be further improved.

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 cast-in-place prefabricated building formwork suitable for columns or beams, which comprises a cylindrical formwork shell and stirrups fixed on the formwork shell, and the upper end and the lower end of the formwork shell are provided with connection matching parts matched with the adjacent formwork shell; the formwork shell is defined by steel plates, and the stirrups are jointly composed of the steel plates and rod-shaped pieces fixedly connected to the inner side faces of the steel plates. A stress test result proves that a column and beam component formed by the cast-in-place prefabricated formwork can better form a restraining effect on cast-in-place concrete, especially increase a restraining area, so that the overall shearing resistance and the bearing capacity of a building are improved, and the cast-in-place prefabricated formwork has important significance on earthquake resistance of the building under the earthquake condition.

The utility model provides a prefabricated assembly type notch plate connecting joint based on a concrete modular integrated building. The prefabricated assembly type notch plate connecting joint comprises a first prefabricated floor slab and a second prefabricated floor slab which are both provided with notches. A transverse main reinforcement of the first prefabricated floor extends out of the left side face towards the left end to form a first connection reinforcement. The stirrups at the notches form connection reinforcing steel bars II; the cross section of the prefabricated floor slab II is L-shaped; the right end of a transverse main reinforcement of the second prefabricated floor extends out of the right side face to form a third connection reinforcement, and a reserved L-shaped notch is formed in the splicing position of the first prefabricated floor and the second prefabricated floor; and through post-pouring of the L-shaped notches, mutual consolidation of the first prefabricated floor slab and the second prefabricated floor slab is achieved, so that the structure has good integrity and anti-seismic performance. According to the MIC box body structure, the L-shaped notches are reserved between the prefabricated floor slabs of the box body, and the connecting steel bars are in lap joint at the notches, so that reliable connection is formed between the two prefabricated floor slabs and the MIC box body through post-pouring concrete at the notches, and the structure has good integrity and excellent anti-seismic performance.