356 results about "Seismic energy" patented technology

The invention belongs to the field of surrounding rock rockburst early warning, and provides a rockburst early warning method and system based on micro-seismic energy and support stress coupling monitoring, which are used for carrying out deep gold mine roadway surrounding rock micro-seismic monitoring and anchor rod support stress monitoring. Establishing a micro-seismic energy data set, and carrying out statistical analysis to obtain a micro-seismic energy early warning index; the anchor rod supporting stress is analyzed, and then an anchor rod stress early warning index is determined; and carrying out information fusion on the micro-seismic energy early-warning index and the anchor rod stress early-warning index, establishing a combined early-warning method based on micro-seismic energy and support stress, and carrying out evaluation and early-warning on the rock burst grade of the surrounding rock. Rockburst occurrence risks can be effectively reduced, and safety of constructors and mechanical equipment is guaranteed.

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 discloses a fabricated building module anti-seismic connection node structure, which relates to the field of fabricated buildings, is used for connecting beam columns and I-shaped beams, and comprises two connection plates symmetrically mounted at the end parts of the I-shaped beams; the fixing base is fixedly installed on the beam column, two symmetrically-arranged bearing parts are arranged on the fixing base, inserting grooves allowing the connecting plates to be inserted are formed in the bearing parts, and the connecting plates are connected with the bearing parts through bolts; the N first friction pieces are arranged between the two bearing parts; the first friction pieces and the second friction pieces are distributed in a staggered mode to form a friction contact face, during an earthquake, displacement of the beam column and the I-shaped beam forces the first friction pieces and the second friction pieces to slide relatively, kinetic energy is converted into heat energy to be dissipated, meanwhile, the N first friction pieces and the N + 1 second friction pieces are staggered to form multi-point friction, and the friction contact face is formed. The energy consumption efficiency is gradually increased along with the displacement magnitude, the anti-seismic energy consumption capacity of the structure is greatly improved, and damage of an earthquake to a building structure is effectively reduced.

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 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 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 novel assembly type pier anti-seismic system based on function separation and an assembly method.The novel assembly type pier anti-seismic system comprises a pier top section, a pier bottom section, a protection barrel, a bearing platform, prestressed steel bars and a triple friction energy dissipation device, the bearing platform is arranged at the top of a pile foundation, the pier bottom section is arranged at the top of the bearing platform, the pier bottom section is a square column, and the protection barrel is connected with the protection barrel; a plastic hinge area is arranged on the periphery of the lower middle area, a protective barrel is arranged on the outer side of the plastic hinge area, and a pier top section is arranged on the top of the pier bottom section. The bearing platform, the pier bottom section and the pier top section are connected through the prestressed steel bars. And a plurality of triple friction energy dissipation devices are arranged between the bearing platform and the steel casing. The self-resetting function is provided for the pier system through the prestressed steel bars, the post-earthquake residual displacement of the pier system is controlled, the post-earthquake repairing difficulty of the pier is reduced, the repairing speed is increased, earthquake energy is absorbed and dissipated through a friction energy dissipation mechanism of the externally-arranged triple friction energy dissipation device, and damage of the earthquake to the pier is reduced.

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 reinforced earth retaining wall with shock absorption and energy consumption and a construction method, and relates to the technical field of civil engineering, the reinforced earth retaining wall comprises an assembly panel, ribs and an energy consumption connecting assembly, and the energy consumption connecting assembly comprises a fixed seat, an energy consumption block and a deflection block. Tension applied to the assembly panel by the ribs can be decomposed into radial force and axial force through rotation of the deflection blocks and sliding of the energy dissipation blocks, the radial force is absorbed and offset through deflection of the deflection blocks and absorption and offset of the first damping springs, the axial force is absorbed and offset through sliding of the energy dissipation blocks and absorption and offset of the second damping springs, the energy dissipation plates are arranged on the assembly panel, and therefore the energy dissipation effect is achieved. According to the reinforced earth retaining wall, earthquake energy between the assembly panels is further absorbed and dispersed through the energy dissipation plates, then the influence of an earthquake on the assembly panels and the ribs is greatly reduced, the phenomena that the wall panels fall off and the ribs are pulled out are avoided, and the stability and safety of the reinforced earth retaining wall are effectively improved.

The invention discloses a building seismic isolation and resistance device, and relates to the technical field of seismic isolation devices. The device comprises two supporting plates which are oppositely arranged up and down, and protruding plates are arranged on the opposite faces of the two supporting plates; the shock insulation layer comprises a protection rubber frame fixedly connected to the protruding plate, top plates are fixedly connected to the top of the protection rubber frame, the two top plates abut against each other oppositely, a plurality of laminated rubber plates are constructed in the protection rubber frame in the height direction of the protection rubber frame in an array mode, and a framework steel plate is wrapped between every two laminated rubber plates. The disc grooves are formed between the top plates, the oval limiting blocks are installed in the disc grooves, a part of load can be transferred to the oval limiting blocks when an earthquake occurs, earthquake energy is consumed through deformation of the oval limiting blocks and friction between the oval limiting blocks and the inner walls of the disc grooves, the load borne by the seismic isolation layer is effectively reduced, and the seismic isolation effect is improved. The anti-seismic bearing range of the device is widened, and the safety of a building is improved.

The invention discloses a shear parallel round hole mild steel plate laminated rubber-lead plate energy dissipation and shock absorption device and a manufacturing method. The device is composed of an upper connecting steel plate with round holes, a lower connecting steel plate, a lower connecting steel plate, an upper connecting steel plate, a lower connecting steel plate, a lower connecting steel plate, a lower connecting steel plate, a lower connecting steel plate and a lower connecting steel plate, the bent parallel dog-bone hole mild steel plates, the front and rear blocking mild steel plates, the left and right blocking skin dog-bone hole mild steel plates are welded between the upper and lower connecting steel plates, the lead plates are stuffed into the middles of cavities between the mild steel plates, the vulcanized rubber is poured into the cavities between the mild steel plates and the lead plates, and the upper and lower connecting steel plates are connected with the steel frame-supporting structure through the high-strength bolt system. Under the action of a strong earthquake, the front and back blocking mild steel plates and the sheared parallel round hole steel plates are subjected to buckling deformation to consume earthquake energy, the lead plates are subjected to plastic deformation to consume more earthquake energy, and the laminated rubber penetrating through the mild steel plates and the lead plates provides restoring force, so that the energy dissipation and shock absorption effects and the shock resistance toughness of the device can be effectively improved.

The invention discloses a bending parallel dog bone hole mild steel plate laminated rubber energy dissipation and shock absorption device and a manufacturing method. The device is composed of an upper connecting steel plate with round holes, a lower connecting steel plate, a lower connecting steel plate, an upper connecting steel plate with round holes, a lower connecting steel plate, an upper connecting steel plate with round holes, a lower connecting steel plate and a lower connecting steel plate, wherein the upper connecting steel plate is connected with a lower flange of an H-shaped steel frame beam; the upper connecting steel plate and the lower connecting steel plate are welded between the upper connecting steel plate and the lower connecting steel plate, and the left-side and right-side blocking skin dog-bone hole mild steel plate, the bending parallel dog-bone hole mild steel plate and the front-back blocking mild steel plate are welded between the upper connecting steel plate and the lower connecting steel plate. And the upper and lower connecting steel plates are connected with the high-strength bolt system of the steel frame-supporting structure. Under the action of a strong earthquake, the front and rear plugging mild steel plates are bent and deformed to consume earthquake energy, the sections of the parallel dog-bone hole mild steel plates are bent and plastically deformed to consume the earthquake energy, and the laminated rubber penetrating through the parallel dog-bone hole mild steel plates provides restoring force, so that the energy dissipation and shock absorption effects and the shock resistance toughness of the device can be effectively 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.

A friction damping-disc spring self-resetting support comprises a sleeve, a disc spring, a pressed limiting plate, a pulled limiting plate and a resetting-friction device. The reset-friction device is parallel to the sleeve in the length direction, and a brass friction plate is arranged in the middle of the reset-friction device. The number of the disc springs, the number of the pressed limiting plates and the number of the pulled limiting plates are all two, the pressed limiting plates and the pulled limiting plates are installed on the sleeve and the reset-friction device, and the two pressed limiting plates are located between the two pulled limiting plates. The brass friction plate is located between the two pressed limiting plates, and the disc spring is arranged on the sleeve in a sleeving mode and located between the pressed limiting plates and the pulled limiting plate. The functions of dissipating earthquake energy and self-resetting are achieved by means of compression and recovery of the disc spring, and meanwhile, relative displacement can be generated through friction damping, and friction energy dissipation is achieved. And the internal structure of the support is simple, the usage amount of steel is greatly reduced, and the bearing capacity and lateral stiffness of the reinforced structure can be improved.

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 invention discloses a bending parallel dog bone hole mild steel plate laminated rubber-lead plate energy dissipation and shock absorption device and a manufacturing method. The device is composed of an upper connecting steel plate with round holes, a lower connecting steel plate, a lower connecting steel plate, an upper connecting steel plate, a lower connecting steel plate, an upper connecting steel plate, a lower connecting steel plate, a lower connecting steel plate, a lower connecting steel plate and a lower connecting steel plate, the left and right side blocking skin dog-bone hole mild steel plates, the bending parallel dog-bone hole mild steel plates, the front and rear blocking mild steel plates are welded between the upper and lower connecting steel plates, the vulcanized rubber is filled in a cavity between the steel plates, and the upper and lower connecting steel plates are connected with the high-strength bolt system of the steel frame-supporting structure. Under the action of a strong earthquake, buckling deformation of the front and rear plugging mild steel plates and plastic deformation of the lead plates consume earthquake energy, near-equal-strength bending plastic deformation of the cross sections of the parallel dog-bone hole mild steel plates consume earthquake energy, and laminated rubber penetrating through the parallel dog-bone hole mild steel plates provides restoring force, so that the energy dissipation and shock absorption effects and shock resistance toughness of the device can be effectively improved.

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.

The utility model provides the novel anti-seismic vibration isolation device, the anti-seismic vibration isolation device innovatively integrates the elastic component and the anti-shearing component, and the earthquake energy is effectively absorbed and dispersed through the stacking of multiple layers of elastic bodies and the comb-tooth-shaped embedding design of the anti-shearing component; the elastic assembly adjusts the frequency and isolates vertical and horizontal vibration, and the buffer piece of the anti-shear assembly ensures flexible isolation, improves the horizontal bearing capacity and prevents shear deformation. A plurality of groups of built-in elastic assemblies further enhance energy dissipation, and pre-pressing bolts and nuts limit over-limit displacement, so that the structural stability is ensured. The overall design supports flexible combination, different load requirements are met, and the anti-seismic performance and safety of a building are remarkably improved.

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.