282 results about "Seismic energy" patented technology

The invention relates to the technical field of mine coal and rock dynamic disaster prevention and control, in particular to a micro-seismic-based deep coal and rock mass instability dynamic multi-parameter evaluation method. The method comprises the following steps: acquiring waveform data of each micro-seismic event of a deep coal and rock mass through a mine micro-seismic system; according to the waveform data, acquiring a micro-seismic characteristic index set of each micro-seismic event; according to the seismic source position and the micro-seismic characteristic index set of each micro-seismic event, acquiring an energy-based micro-seismic magnitude; according to the micro-seismic magnitude, obtaining a micro-seismic b value corresponding to a preset duration, and according to the micro-seismic characteristic index set, obtaining a micro-fracture type and change trend information of accumulated energy of each micro-seismic event; and according to the micro-seismic energy, the change trend information of the accumulated energy, the frequency, the ringing count, the micro-fracture type and the micro-seismic b value, the dynamic instability fracture risk information of the deep coal and rock mass is obtained. According to the invention, the determination accuracy and efficiency of the instability and fracture risk information can be improved.

The invention provides an early warning method based on microseismic energy accumulation tendency, and belongs to the field of seismic data processing. The method comprises the following steps: acquiring a historical micro-seismic log set of an earthquake monitoring sensor array in a coal mine area; performing staged processing in combination with a timestamp to obtain a micro-seismic energy characteristic sub-sequence set; executing a first-order difference operation, and constructing a difference energy characteristic subsequence set; performing trend correlation analysis by using a space-time guiding module to obtain a trend feature set; constructing an energy accumulation tendency analyzer based on the trend feature set; and obtaining a real-time micro-seismic log, carrying out abnormity identification by combining with an analyzer, and triggering an early warning instruction. The technical problem that in the prior art, the dynamic change trend of the micro-seismic energy cannot be accurately captured, so that the early warning accuracy of the energy accumulation is insufficient is solved, and the technical effect of improving the early warning accuracy and timeliness of the micro-seismic energy accumulation through differential energy feature analysis and space-time trend association is achieved.

The invention discloses a tunnel anti-seismic structure based on gradient grouting and composite lining and a construction method thereof.The construction method comprises the steps that the geology of surrounding rock is detected, distribution of a weak area, a cavity area and a stable area of the surrounding rock is recognized, and the surrounding rock is divided into a high risk area, a medium risk area and a low risk area according to the detection result; different grouting modes, different paste and slurry proportions, different grouting parameters and different grouting thicknesses are adopted for conducting gradient grading grouting reinforcement on the risk areas of all levels; a flexible layer is poured on the inner side of the surrounding rock subjected to grouting reinforcement, an energy consumption interlayer is installed on the inner side of the flexible layer, and a high-strength rigid layer is poured and manufactured on the inner side of the energy consumption interlayer; a monitoring and intelligent alarm system is arranged in the lining and used for monitoring tunnel internal structure deformation and displacement data in real time. Through triple protection of rigid compression resistance, energy dissipation buffering and flexible energy release, the earthquake energy dissipation rate is increased, meanwhile, material waste is reduced through surrounding rock graded grouting, and the surrounding rock-lining rigidity matching degree is remarkably improved.

The invention discloses a composite toggle type displacement amplification damping device of a self-resetting damper and an assembly method, and belongs to the technical field of structural engineering and structural earthquake resistance, the device comprises a steel frame structure, the self-resetting damper installed on the steel frame structure, a toggle type supporting rod piece and a right-angle curved bar; one end of the self-resetting damper is hinged to the steel frame structure, the other end of the self-resetting damper is hinged to a right-angle curved bar, the end of the first supporting piece and the end of the second supporting piece are hinged to the steel frame structure, and the end of the third supporting piece is hinged to the right-angle curved bar which is hinged to the steel frame structure. A movable triangular plane is formed among the second supporting piece, the third supporting piece, the right-angle curved bar and the self-resetting damper, and a plane formed by connecting lines between hinge points on the right-angle curved bar is a right triangle. The damper can solve the problems of low damping efficiency and large post-earthquake residual deformation caused by insufficient relative deformation of the two ends of an existing damper and incapability of fully dissipating earthquake energy.

The invention discloses a stirrup assembly type concrete beam column structure, which relates to the technical field of building structures and comprises a prefabricated lower column, a prefabricated upper column, a left superposed beam and a right superposed beam, the prefabricated lower column, the prefabricated upper column, the left superposed beam and the right superposed beam are distributed in a cross-shaped beam column structure; unique double-spiral stirrup configuration is applied to the column body, so that the torsion resistance and the bearing capacity are enhanced; the longitudinal bars and the stirrups are reasonably arranged on the superposed beam, so that the bending resistance and the shearing resistance are guaranteed. At the joint, the T-shaped channel steel plates, the fixing blocks and the hinged tension connecting rods form an energy dissipation system, and earthquake energy is effectively dissipated. The column body connection adopts the combination of a full-grouting nodular cast iron sleeve and a frame-shaped steel belt, and is matched with a post-pouring laminated layer to realize rigid connection. The limiting mechanism anchors a T-shaped channel steel plate through a double-end pull rod and a self-locking nut, a limiting clamping plate and a torsion spring form anti-pulling self-locking, the anti-seismic property of the joint is enhanced by combining a hinged tension connecting rod, and the structural reliability is improved.

The invention discloses a rock burst risk identification method for a coal pillar, and the method comprises the steps: constructing a multi-source monitoring data set, extracting a plurality of dynamic characteristic parameters, such as micro-seismic energy and stress concentration ratio, constructing a comprehensive precursor score in combination with a coal pillar simulation critical value, and introducing a classification model to carry out the risk grade identification. The problem that a traditional method depends on a single index and early warning staticization is solved, meanwhile, through fusion of finite element simulation and real-time monitoring, the expression ability of the stability evolution process of the coal pillar is enhanced, the systematic recognition process from feature extraction, score evaluation to early warning output is achieved, the accuracy and adaptability of rock burst risk recognition are enhanced, and the risk recognition efficiency is improved. And the capabilities of high-discrimination risk discrimination and field application adaptability are realized.

The invention discloses a power transmission line tower footing settlement monitoring method and system based on multi-source data fusion, and relates to the technical field of power transmission line operation and maintenance monitoring. The method comprises the steps that by integrating tower footing vertical displacement, soil moisture content and micro-seismic energy data, a humidity-micro-seismic coupling settlement dynamic model is constructed; according to the method, the correlation among the settlement rate, the soil moisture content and the micro-seismic energy is dynamically calculated through a Pearson's correlation coefficient, the weight of an input driving item is adjusted in combination with an adaptive Kalman filtering algorithm, the settlement amount and rate prediction are accurately modeled, and the influence of complex changes of the soil and the dynamic environment can be more effectively dealt with; the tower footing risk level can be monitored in real time by calculating the comparison between the coupling divergence index and the preset threshold value. Therefore, high-precision monitoring of the settlement state of the tower footing is realized.

The utility model provides a spring friction self-resetting energy consumption device which comprises a connecting guide rod, an outer frame, a resetting assembly and a friction energy consumption assembly, the resetting assembly and the friction energy consumption assembly are arranged in the outer frame, the resetting assembly is divided into a left resetting assembly and a right resetting assembly, and the left resetting assembly is connected with the right resetting assembly. The friction energy dissipation assembly is arranged between the left reset assembly and the right reset assembly, the connecting guide rod penetrates through the right reset assembly, and the friction energy dissipation assembly is connected with the left reset assembly. Friction is generated between the friction plate and the friction plate through displacement of the connecting guide rod, the friction is used as power consumption to dissipate earthquake energy, and therefore the purposes of energy dissipation and shock absorption are achieved. The two reset assemblies can work at the same time when being pressed and pulled, and the self-reset capacity of the spring friction self-reset energy dissipation device is improved; and meanwhile, the device is low in cost and wide in application, can be used between floor frames and beam-column joints, and is suitable for popularization and application.

The present invention discloses a three-dimensional seismic isolation bearing using a friction pendulum combination of vertically laminated rubber, which belongs to the field of seismic isolation technology. The present invention includes a base, a vertically laminated rubber seismic isolation device and a horizontal friction pendulum seismic isolation device. The present invention solves the problem that the existing combined bearings are simply superimposed and combined, which may cause the bearings to be too high, the connections between the components to be loose, and it is impossible to achieve a good three-dimensional seismic isolation effect. The present invention rationally combines the vertically laminated rubber bearings and the friction pendulum bearings, and while achieving three-dimensional seismic isolation, effectively controls the height of the bearings, so that the bearings have good stability and pull-out resistance, can effectively consume and isolate seismic energy, reduce the seismic effects borne by the structure, thereby enhancing the seismic resistance of the structure or equipment and reducing earthquake losses.

A seismic energy estimation method based on generalized spherical wave propagation, relating to the field of earthquake engineering. The method comprises: determining initial seismic total energy and seismic power on the basis of seismic source characteristics and a seismic magnitude; determining a generalized spherical wave equation, and calculating an average energy flow density of propagated waves on the basis of the wave equation of spherical waves; using an earth surface spherical crown, which is projected on the zone of a seismic source surface, as a main impact zone of seismic spherical waves on an earth surface, the main impact zone being equivalent to a square and performing grid division, and calculating the hypocentral distance between the center of each grid and the center of a seismic source so as to form a hypocentral distance matrix; and expressing the generalized spherical wave energy flow density of each grid as the sum of the energy flow density of longitudinal waves and the energy flow density of transverse waves, performing grid subdivision, estimating the average amplitude of each subdivided grid mass unit within a seismic action period, and evaluating the seismic action energy of a site. The present invention estimates the action of seismic energy on the earth surface by defining the generalized spherical wave propagation of seismic source energy, thereby more accurately evaluating the distribution condition of seismic energy on the earth surface.

Disclosed is a theoretical model constraint and data-driven fusion-based micro-seismic quantitative prediction method, comprising: 1, obtaining original micro-seismic data of a coal mine working face to form an initial sample data set; 2, performing data preprocessing, and dividing into a training set and a test set; 3, constructing a long short-term memory (LSTM) model; 4, sampling historical micro-seismic data for a micro-seismic event quantitative prediction sample; 5, constructing a multi-objective optimization model containing seven sub-objective functions: a micro-seismic time fractal dimension, a micro-seismic space fractal dimension, a micro-seismic energy fractal dimension, a micro-seismic prediction total energy, a micro-seismic reconstruction mining stress, a micro-seismic activity process and a micro-seismic energy-frequency power law b value; and 6, finding an optimal sampling sample to act as a prediction value. By means of the described steps, the present invention achieves theoretical model constraint and data-driven fusion-based micro-seismic event quantitative prediction. The prediction effect is good, and the prediction result can effectively guide on-site production activity process control and implement pressure relief measures and disaster early warning.

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 a damping support which comprises a first supporting beam, a second supporting beam and supporting legs. The number of the first supporting beams is two, the two first supporting beams extend in the first direction and are arranged in a spaced mode in the second direction, and the first supporting beams are provided with supporting legs. The second supporting beam is arranged between the two first supporting beams and extends in the second direction. At least one of the first support beam and the second support beam is provided with a hinge section configured to yield when an earthquake acts such that at least one of the first support beam and the second support beam forms a plastic hinge. Shaping energy consumption is carried out through the plastic hinge, input earthquake energy is consumed, meanwhile, the rigidity of the shock absorption support can be reduced through forming of the plastic hinge, the fundamental frequency of the whole structure is reduced, the shock absorption support deviates from the characteristic frequency of a building, frequency decoupling is achieved, the resonance amplification effect is avoided, and earthquake response is reduced. In addition, the overall structure height of the damping support is low, and the damping support can adapt to the indoor environment with strict limitation on the total installation height of equipment.

The present application relates to the high intensity area highway open cut tunnel stress analysis method under the coupling load of earthquake and rockfall, belongs to data processing analysis technical field, including the following steps: introducing disaster phase coupling factor to quantify the superposition relationship of seismic energy and rockfall load pulse; the time-space evolution process of the whole displacement field of open cut tunnel surface and the internal steel strain of open cut tunnel is calculated by using the earthquake rockfall time sequence coupling method, the multi-scale perception of open cut tunnel structure response is obtained; the dynamic coupling analysis algorithm is introduced to solve the structure inertia response caused by earthquake and the local dynamic response caused by rockfall load pulse, the multi-scale dynamic characteristics of high-frequency impact and low-frequency vibration are handled by hybrid integration strategy; the phase difference of earthquake and rockfall is calculated, the time-gravity distribution law of internal structure of open cut tunnel is obtained, and then the weak area of open cut tunnel under the coupling effect of multiple disasters is determined; the beneficial effects of the present application are: the low-frequency structure inertia response caused by earthquake and the high-frequency dynamic response caused by rockfall impact are obtained.

The utility model discloses a novel shear wall assembly type composite reinforced consumption type connecting piece which comprises a first fixing piece and a second fixing piece, the first fixing piece comprises two L-shaped first connecting blocks facing oppositely, and first connecting holes which are evenly distributed are formed in one sides of the first connecting blocks in a penetrating mode. Two rows of second connecting holes which are evenly distributed are formed in the vertical sides of the first connecting blocks, two connecting frames are arranged between the two second connecting blocks, and the two connecting frames and the two second connecting blocks jointly clamp the shear wall. Main energy is dissipated and concentrated on specific energy dissipation connecting nodes, effective absorption and dispersion of earthquake energy are achieved, so that the shear wall structure is reinforced, the energy dissipation connecting pieces are replaceable plates, the plates mainly bear energy dissipation tasks in earthquakes, the plates can be rapidly replaced once damaged, and the energy dissipation connecting pieces are convenient to replace. And the maintainability and durability of the structure are improved.

A method is provided for statics correction of seismic data comprising a plurality of traces representing signals recorded by each of a plurality of seismic receivers disposed proximate to an area of Earth's subsurface to be evaluated. The signals are in response to one or more actuations of one or more seismic energy sources. The method includes identifying arrival times of refraction events in each of the plurality of traces. Long wavelength statics components and short wavelength statics components are separated from the arrival times. The separated long wavelength statics components are used as input to a refraction analysis to generate a velocity model of Earth's subsurface.

The invention belongs to the technical field of bridge earthquake resistance, and particularly provides a damping limiting device for a bridge in a high-intensity earthquake area, which comprises a pipe body, one end of the pipe body is provided with an end plate, the other end of the pipe body is slidably connected with a piston end, and the pipe body is provided with a metal energy dissipation element facing the inside of the pipe body. One side, facing the pipe body, of the piston end is connected with a supporting piece, a supporting and blocking part is arranged on the supporting piece, the supporting and blocking part comprises two supporting and blocking parts which are arranged in a spaced mode, and the metal energy dissipation element is located between the two supporting and blocking parts. Under the condition of the same appearance size, the energy dissipation capacity of the device can be greatly improved, the requirements for node arrangement and installation space are reduced, the adaptability to long and narrow spaces such as bridges is good, and the device can be further suitable for seismic reinforcement and transformation of existing bridges with limited installation positions and is particularly suitable for seismic energy dissipation application and popularization in high-intensity seismic areas.

A marine seismic data acquisition system may include first and second containers deployable in a body of water. The first container includes a first seismic data acquisition channel capable of transducing seismic energy in the body of water having a first maximum amplitude, and the second container includes a second seismic data acquisition channel capable of transducing seismic energy in the body of water having a second maximum amplitude. The first seismic data acquisition channel is associated with at least a first seismic sensor, and the second seismic data acquisition channel is associated with at least a second seismic sensor. The second sensor corresponds to a same sensor type as the first seismic sensor, and the first maximum amplitude is higher than the second maximum amplitude.

The invention discloses a rotating steel bar damper of a four-connecting-rod structure. The rotating steel bar damper comprises an outer lug plate, an inner lug plate, an energy dissipation steel bar, a pin shaft and a sleeve. According to the rotating steel bar damper of the four-connecting-rod structure, the damper can deform in any direction in a plane, each pin shaft and the corresponding energy dissipation steel bar surrounding one circle of the pin shaft form a single rotating unit, under the earthquake effect, when the outer lug plate moves in a certain direction, the outer lug plate and the inner lug plate rotate relatively, and therefore the rotating steel bar damper can deform in any direction. The shearing force between the outer lug plate and the inner lug plate is borne by the pin shaft, the bending moment generated by relative rotation of the outer lug plate and the inner lug plate is borne by the energy dissipation steel bar, bending-shearing separation is achieved through the structure, overall plastic deformation of the damper is concentrated on the energy dissipation section of the energy dissipation steel bar, and earthquake energy is dissipated through shearing plastic deformation of the energy dissipation steel bar. And according to the damper, translation deformation is converted into rotation deformation through a four-connecting-rod structure, and the deformation capacity of the metal shearing type damper is improved.

The present application provides an anti-seismic explosion-proof type pry dress refueling device, including a refueling machine, an oil unloading pump and a barrier explosion-proof double-layer oil storage tank, the refueling machine and the oil unloading pump are arranged at one end of the inside of the anti-seismic frame, the outside of the barrier explosion-proof double-layer oil storage tank is arranged in the inside of the anti-seismic frame through a plurality of oil tank anti-seismic units, the bottom surface of the anti-seismic frame is arranged on the top surface of the shock isolation base, the bottom surface of the shock isolation base is arranged on the top surface of the main base in the middle, the outside of the shock isolation base and the top surface of the main base are provided with a protective weir, a plurality of lead core rubber shock isolation supports in the shock isolation base are deformed to isolate a large amount of seismic energy, only a small part of the seismic energy is transmitted to the anti-seismic frame; the remaining seismic energy on the anti-seismic frame is absorbed by the viscous damper in the frame anti-seismic unit; when the anti-seismic frame shakes, the plurality of oil tank anti-seismic units reduce the shaking of the barrier explosion-proof double-layer oil storage tank, thereby further reducing the risk of tank explosion.

The invention discloses a quasi-rectangular frame subway tunnel damping and anti-cracking structure and a construction method thereof.The quasi-rectangular frame subway tunnel is provided with a connecting slope with a certain dip angle between the horizontal top face and the vertical face of the side wall, and the damping and anti-cracking structure comprises a damping layer, a damper and PVA fiber improved secondary lining concrete; the shock absorber comprises a steel spring, a hydraulic damper and correction shock absorbers, the hydraulic damper is sleeved with the steel spring, the correction shock absorbers are arranged on the two sides of the hydraulic damper and jointly hinged to a fixing plate of the primary lining and the secondary lining, and a filling layer between the secondary lining and the primary lining is formed by mixing high-molecular polymer and secondary lining concrete with PVA fibers according to a certain proportion. Under the effects of transverse waves and longitudinal waves of the quasi-rectangular tunnel, when the earthquake action is transmitted to a weak part, the earthquake action is converted into the earthquake action perpendicular to the lining surface through the correction shock absorber, the earthquake energy is absorbed through the hydraulic damper, damage of the earthquake to the tunnel is reduced, the leakage phenomenon of the tunnel is effectively avoided, and the service life of the tunnel is prolonged.

This utility model relates to the field of wall connection technology and discloses an efficient connection device between a BRB (Brick Reinforced Bench) and a secondary structure wall. It includes a channel steel 2C10 and an upper wall of the BRB. A steel frame beam is fixedly connected to the top of the channel steel 2C10, and an embedded part is fixedly connected to the bottom of the channel steel 2C10. A first connecting ear plate is provided on the outer side of the channel steel 2C10, and a tie bar is fixedly connected to the outer side of the first connecting ear plate. Polyurethane foam is provided at the bottom of the upper wall of the BRB. In this utility model, the double-layered channel steel and the tie bar on the connecting ear plate can disperse localized concentrated loads in the wall, effectively transferring these loads to the main structure, reducing stress concentration in the wall. Under seismic action, the tie bar forms an energy dissipation mechanism, helping to dissipate seismic energy and reducing damage to the building wall. The tie bar can also restrain the development of temperature shrinkage cracks, ensuring the durability and safety of the wall, and has significant market and social value.

The application provides a slope quality monitoring and early warning method and system based on seismic data, which first acquires a set of seismic monitoring data of a target slope area, covering seismic waveform data and environment-related parameters of a plurality of monitoring nodes within a preset time period, then dynamically preprocesses the set of seismic monitoring data, including data alignment, noise filtering and dimension unification, to obtain a standardized data set, then extracts a dynamic correlation feature set containing seismic energy distribution, slope response frequency and environment coupling fluctuation characteristics based on the standardized data, then calls a slope quality analysis model to predict the state of the feature set, generates a slope quality evaluation result according to the difference between the stable state characteristics and the abnormal fluctuation characteristics, and finally determines an early warning strategy according to the slope quality evaluation result and triggers an early warning signal output, thereby achieving effective monitoring and early warning of the slope quality.

The utility model belongs to the field of joints of assembly type concrete frames, and particularly relates to a novel prefabricated assembly type concrete frame joint connecting structure which comprises a supporting column, a connecting joint is fixedly arranged on the supporting column in a sleeved mode, and a plurality of fixing bolts are fixedly arranged on the two sides of the connecting joint in a penetrating mode. The other ends of the multiple fixing bolts are fixedly connected with the supporting column, connectors are fixedly installed on the two sides of the connecting joint, multiple limiting grooves are formed in the inner sides of the two connectors, expansion bolts are slidably installed on the inner sides of the multiple limiting grooves, and expansion mechanisms are arranged at the bottom ends of the multiple expansion bolts. Concrete member columns can be connected, connection stability is improved while rapid installation is achieved, the situation that bolts fall off is avoided, friction force can be generated between friction faces when relative tiny displacement is generated between members due to an earthquake due to the friction plates arranged on the joints, and the friction plates are not prone to falling off. And earthquake energy is converted into heat energy to be dissipated.

The invention belongs to the technical field of anti-seismic connection of inorganic glue composite bamboo structures, and relates to an inorganic glue composite bamboo-profile steel combination column-beam connection joint with graded energy consumption and self-resetting functions and an assembly method thereof. Comprising an inorganic glue composite bamboo-section steel combination column, an inorganic glue composite bamboo splicing beam, an energy dissipation steel hoop connecting piece and a beam-column joint connecting steel member. The inorganic glue composite bamboo-section steel combination column is provided with hollow round-corner cross-shaped steel, and the middle of the cross-shaped steel is provided with an extending connecting energy-dissipation steel filling plate which is used for being reliably connected with a joint connecting steel component and an energy-dissipation steel hoop connecting piece. The beam ends of the inorganic glue composite bamboo splicing beams and the energy dissipation steel hoop connecting pieces are connected through bolts to form an integral beam assembly. The energy dissipation steel hoop connecting piece comprises a four-side wrapping steel cap and energy dissipation angle steel, under the action of an earthquake, the energy dissipation angle steel firstly generates yield deformation to form a first-stage energy dissipation mechanism, then the node steel component further generates plastic deformation to form a second-stage energy dissipation mechanism, and therefore a double-energy-dissipation structure system is formed, and earthquake energy is effectively dissipated.

The application discloses a T-shaped section combined shear wall with damage directional control and post-earthquake recoverability, which comprises a wall limb constraint end edge constraint H-shaped steel and a flange wall limb flat steel plate, the flange wall limb flat steel plate is connected with a flange wall limb free end edge constraint H-shaped steel, a web wall limb steel plate is connected with the wall limb constraint end edge constraint H-shaped steel, and the web wall limb steel plate is connected with a web wall limb free end edge constraint H-shaped steel; the web wall limb steel plate comprises a web wall limb upper flat steel plate, a web wall limb lower flat steel plate and a corrugated steel plate; the web wall limb free end edge constraint H-shaped steel comprises a web wall limb free end upper edge constraint H-shaped steel and a web wall limb free end lower edge constraint H-shaped steel; and the application is connected through energy dissipation steel plates; the corrugated steel plate and the energy dissipation steel plate are adopted as core components for improving the recoverability of the seismic performance of the shear wall, and the seismic energy of the embedded flat steel plate and the constraint edge component is effectively dissipated.

The invention discloses a supporting lining for tunnel seismic resistance and shock absorption and a construction method, and belongs to the technical field of tunnel engineering.The supporting lining comprises a primary support and a secondary lining, the primary support comprises a flexible net, a steel arch frame, an elastic anchor rod and a reinforced steel frame, and the secondary lining comprises a conventional lining, a high-strength lining and an elastic lining; a waterproof damping layer is arranged between the primary support and the secondary lining. According to the supporting lining for seismic resistance and shock absorption of the tunnel and the construction method, the elastic lining is arranged in the secondary lining to absorb seismic energy, the high-strength linings are arranged on the two sides, and the reinforced steel frame is arranged on the outer side of the elastic lining, so that the risk caused by deformation of the elastic lining is reduced, and the seismic resistance of the tunnel is improved. And the waterproof shock absorption layer is matched to further absorb local earthquake energy, so that the damage of the earthquake to the tunnel structure is effectively weakened.

This utility model discloses a Z-shaped friction damping column structure with enhanced seismic performance, comprising a Z-shaped friction damping column body, which includes columns on both sides and Z-shaped crossbars between the columns. The top and bottom of the Z-shaped crossbars between the columns are respectively provided with top friction damping diagonal braces and bottom friction damping crossbars. When an earthquake generates a load on the rack in the direction perpendicular to the aisle, and the axial force caused on the base and the bottom and top diagonal braces exceeds the preset friction force, the damper will begin to slide, absorbing or dissipating some of the seismic energy in the form of friction damping. This reduces the probability of damage to rack structural components and goods slippage under seismic conditions, thereby enhancing the overall seismic performance of the industrial rack.

The invention relates to the technical field of bridge earthquake resistance, in particular to a friction type energy consumption limiting device for a bridge in a high-intensity earthquake area. The suction cup assembly communicates with the vacuum pump, an opening of the suction cup assembly faces the first building component, and the first building component is one of the main beam and the pier. One end of the inhaul cable is connected with the suction cup assembly, the other end of the inhaul cable is connected with the second building component, and the second building component is the other one of the main beam and the bridge pier. The technical problems that an existing anti-falling beam device lacks buffering energy dissipation capacity, seismic energy cannot be effectively dissipated, and impact loads borne by a bridge cannot be effectively reduced can be solved.

The present invention discloses a column base node for an assembled subway station and a construction method thereof, wherein the column base node comprises an upper mortise base, a lower mortise base and a plurality of energy-absorbing components; the upper mortise base and the lower mortise base are spaced apart from each other, and the plurality of energy-absorbing components are evenly arranged between the upper mortise base and the lower mortise base; a mortise joint is provided at the bottom end of the prefabricated column, the upper end of the mortise joint is fixed to the bottom end of the prefabricated column, and the lower end passes through the upper mortise base and the lower mortise base in sequence; the present invention relaxes the rotation constraint of the foundation on the column bottom interface at the interface between the column bottom and the foundation by inserting the mortise joint into the mortise base, so that the column bottom interface can rotate freely; by arranging the energy-absorbing components, the energy-absorbing components can yield before other adjacent components, thereby dissipating earthquake energy; the column base node can not only transmit axial force and play a supporting role, but also absorb earthquake energy and has a highly efficient earthquake-resistant effect; the column base node has clear force transmission characteristics and is replaceable when damaged by earthquake.