35 results about "Seismic tests" patented technology

The invention discloses an anti-seismic test simulation system for a mountain tunnel crossing a fault fracture zone. The anti-seismic test simulation system comprises a basic vibration unit, a differential loading model box unit, a surrounding rock ground stress simulation unit, a tunnel structure simulation unit and a control acquisition unit. The basic vibration unit simulates seismic oscillation, the differential loading model box unit is arranged above the basic vibration unit and comprises a fixed model box, an active model box and a planar differential driving platform, the planar differential driving platform drives the active model box to move to simulate fault movement, and a follow-up telescopic supporting bottom plate is arranged in the bottom surface of the fixed model box; an annular fault fracture zone simulation unit which is convenient to replace and is integrated with a seepage pipe assembly is arranged on the tunnel structure simulation unit, the surrounding rock crustal stress simulation unit is used for applying crustal stress, and a sensor network is arranged in the tunnel structure simulation unit to collect dynamic response data. According to the invention, accurate coupling simulation of earthquake and fault movement is realized, the test efficiency is high, and reliable test support can be provided for tunnel engineering.

The application discloses a kind of civil engineering seismic test equipment, it is related to seismic test equipment technical field.The present application includes test table, the bottom of test table is fixedly installed with driving motor, the output end of driving motor is fixedly installed with first gear through test table, both sides of first gear are engaged with second gear, the top of two second gears is fixedly installed with incomplete gear, incomplete gear is engaged with rack, rack is slidingly connected on test table, rack top is fixedly installed with positioning plate frame, positioning plate frame is fixedly installed with hollow column in the inside.The present application drives gear set by driving motor, makes rack horizontal multidirectional reciprocating motion, drives positioning plate frame to let installation platform generate multidirectional motion trend.Simultaneously, the vibration motor under installation platform is started, and its vibration direction is random or preset, and is superimposed with installation platform motion, so that test device is stimulated by complex vibration, is closer to earthquake actuality, improves simulation accuracy, and is beneficial to the research of civil engineering structure performance.

The utility model discloses an anti-seismic test device for civil engineering structural design, which comprises a bottom plate, a two-section vibration mechanism, a clamping mechanism and an anti-skid mechanism, and is characterized in that the two-section vibration mechanism comprises a mounting frame, a mounting groove is formed in the mounting frame, a spring is fixedly connected in the mounting groove, and the upper end of the spring is fixedly connected with an experiment table; the upper side of the bottom plate is fixedly connected with a mounting plate. Through the arrangement of the two sections of vibration mechanisms, the air cylinder is started, the piston rod of the air cylinder stretches out and draws back, the experiment table is driven to rapidly vibrate left and right, and the springs fixedly connected in the mounting grooves in the mounting frame are combined, so that the experiment table generates high-strength and high-frequency vibration under the strong pushing of the air cylinder and the elastic buffering action of the springs; through the two-section vibration mode of first small-amplitude displacement and then high-strength vibration, the process of an actual earthquake from initial movement to main earthquake is completely reproduced, the model fully experiences earthquake acting force at different stages, and the earthquake resistance of the model is more comprehensively detected.

The embodiment of the invention provides a plate-type fuel assembly anti-seismic test bench and method, and relates to the technical field of nuclear reactor safety tests. The invention aims to solve the problems that a plate-type fuel assembly test device is easy to cause distortion of measured data due to self-vibration interference under earthquake excitation and cannot provide an effective verification reference for a numerical model. According to the plate type fuel assembly anti-seismic test bed, through the design of the main body structure of the bottom plate and the water tank, the first-order inherent frequency of the test bed in the no-load state and the full-load state is larger than 60 Hz, and the transverse static rigidity of the test bed is larger than 20 kN / mm. The plate-type fuel assembly anti-seismic test method is implemented by adopting the rack. The test bench has inherent frequency which is far higher than the frequency of a tested piece and the frequency of earthquake excitation, and enough static rigidity and dynamic rigidity, thereby fundamentally eliminating the interference of the vibration of the bench itself on the result of an anti-seismic test, and ensuring the accuracy and reliability of measured data.

The invention discloses an underground fracture identification method, system and device and a medium. The method comprises the following steps: acquiring real seismic data; respectively inputting the real seismic data and the seismic test data set into an improved fracture identification model to respectively obtain a real probability graph and a test probability graph; and comparing the real probability graph with the test probability graph to obtain an underground fracture area in the real probability graph. According to the invention, the underground fracture can be directly and automatically identified through the real seismic data, and the method has the characteristics of high efficiency and high universality.

The invention relates to a structural column anti-seismic test loading device under complex working conditions, which comprises a polygon prism column head, a square hole matched with a square column in size is formed in the column head, the extending end of a horizontal jack is extruded on one side surface of the column head, and a fixing structure for fixing the square column and driving the square column to rotate is arranged on a bracket. During use, the column head is a polygon prism, so that the column head has side surfaces with a plurality of inclined angles, the horizontal jack applies thrust to different side surfaces of the column head to apply loads to the column at different angles, and the number of the side surfaces of the column head can be selected; therefore, horizontal loads can be applied to the rectangular-section column in multiple directions, the influence of the torsional effect is implied, loads can be applied to multiple angles, then the spatial column curved surface is obtained, if the number of loading points is designed to be large enough, the spatial curved surface can be completely simulated, and the spatial curved surface can be simulated. The column space curved surface is used for replacing a column space curved surface obtained according to a superposition method, so that the design of the column is safer.

The present application relates to the technical field of detection device, specifically relates to a kind of steel structure connecting node's anti-seismic testing device.A kind of steel structure connecting node's anti-seismic testing device includes two adjusting mechanisms.Adjusting mechanism includes pivot, eccentric component and adjusting component.Eccentric component includes multiple eccentric wheels.Multiple eccentric wheels are divided into multiple first wheels and multiple second wheels.Two pivots rotate in the same direction, and first wheel or second wheel drives movable platform reciprocating movement by adjusting component.Because the sum of the eccentric force of multiple first wheels on one pivot is equal to the sum of the eccentric force of multiple second wheels, and the eccentric direction of first wheel and second wheel is opposite, it can avoid first wheel and second wheel to make the up and down vibration of pivot.The present application provides a kind of steel structure connecting node's anti-seismic testing device to solve the problem that cam will cause the up and down vibration of cam pivot when using eccentric cam structure in existing anti-seismic test device, thereby affecting anti-seismic test.

The utility model belongs to the technical field of test, in particular relates to a reinforced concrete frame column test device, and aims to solve the problems that in the conventional reinforced concrete column test, particularly when an anti-seismic test is carried out on a reinforced concrete column, the reinforced concrete columns poured in different proportions are inconvenient to intuitively compare, and the test time is shortened. In order to solve the problems that in the prior art, in the prior art, in the prior art, a user often needs to be far away from a testing device during testing, personnel are prevented from being injured, and meanwhile testing personnel cannot conveniently observe details of the test in a close range, the following scheme is provided that the device comprises a base, a shaking base is arranged at the top of the base, and a first foundation pit and a second foundation pit are formed in the top of the shaking base. When the device is used, the shaking mechanism achieves the function of testing two reinforced concrete columns with different proportions by simulating a real earthquake environment, and the protection mechanism ensures the smooth proceeding of the test and the accuracy of the result by guaranteeing the safety of test personnel and facilitating observation and recording.

The present application relates to the field of structural mechanical performance test, in particular to a kind of lining structure intelligent test device and method under long-term load and extreme load coupling, test device includes: arch lining structure test piece;Earth and stone groove;Lining behind cavity water corrosion system, for simulating the corrosion effect caused by the cavity between lining outer surface and earth and stone caused by water seepage;Surrounding rock load system, jack is loaded on elastic pad by loading plate, so as to apply uniform surrounding rock load to earth and stone medium in earth and stone groove;Impact test system, for simulating the damage effect of vehicle out of control impact on lining structure;Earthquake test system, for simulating seismic disturbance;Intelligent control system, corrosion liquid supply device and jack can be intelligently regulated and controlled according to the data obtained by concentration sensor and pressure sensor monitoring.The present application can simulate the destructive influence of high surrounding rock stress, water-rich surrounding rock environment corrosion, earthquake disaster and external force impact damage superposition conditions on lining structure.

The invention discloses a drive line anti-seismic test simulation supporting structure for a high-temperature liquid metal reactor. The drive line anti-seismic test simulation supporting structure comprises an upper flange assembly, a middle-upper flange assembly, a middle-lower flange assembly and a lower flange assembly, an upper inner cylinder assembly is installed between the upper flange assembly and the middle upper flange assembly and is cylindrical, an upper decoupling assembly is installed on the outer side of the upper half portion of the upper inner cylinder assembly, and an upper outer cylinder assembly is installed on the lower half portion of the upper inner cylinder assembly. The inner cylinder assembly can be used for installing a control rod drive wire test piece, accommodating a high-temperature liquid metal melting medium and assembling an electric heating element so as to have heating and heat preservation functions, and a gap between the inner cylinder and the outer cylinder can be filled with a heat preservation and insulation material and can serve as an anti-leakage protection layer. The outer cylinder has the effects of supporting the test body and adjusting the overall structural rigidity; the flange assembly has the effects of connecting the inner and outer cylinders and transmitting an earthquake excitation load, and can also be assembled with an electric heating element so as to ensure the temperature uniformity of the test body.

The invention discloses an intelligent analysis method and system for seismic isolation performance parameters based on a dynamic model, and relates to the technical field of seismic isolation performance analysis, and the method comprises the steps: obtaining seismic isolation system information, obtaining target seismic isolation grade information based on a seismic isolation design target according to seismic isolation system structure information, and obtaining a target seismic isolation grade according to protected equipment information; and based on the vibration sensitivity analysis of the protected equipment, obtaining the foundation vibration isolation grade information. According to the method, the stress condition of the seismic isolation system is accurately analyzed through the seismic stress feature points, the difference between different data is determined through the seismic isolation energy consumption coefficient, and the seismic isolation level is calculated by taking the basic seismic isolation level and the target seismic isolation level as the seismic simulation level range and the seismic intensity sensitive interval as the seismic level change value. The earthquake simulation test is carried out on the earthquake isolation system, the accurate test of the earthquake isolation performance is realized, the data is comprehensively processed through the weight coefficient, and the stability and the reliability of the analysis of the earthquake isolation performance are ensured.

The utility model relates to the technical field of house building anti-seismic testing, in particular to a house building anti-seismic structure testing device which comprises a base table and a shaking table installed on the base table. The shaking table slides in the horizontal direction and is controlled by a driving part to move left and right back and forth. And a steering table is rotationally mounted at the top of the shaking table, is used for supporting and fixing the to-be-tested housing construction structure, and can be rotationally adjusted. In the testing process, after the steering table is fixed, the housing construction structure to be tested is placed and fixed on the steering table. And then the shaking table is controlled by the driving piece to shake back and forth at a certain frequency so as to carry out an anti-seismic test on the to-be-tested housing construction structure. And after the test in the direction is completed, the direction of the to-be-tested housing building structure is readjusted by rotating the adjusting steering table, and anti-seismic tests in different directions are carried out. According to the test mode, the anti-seismic test can be carried out on the house building structure from different directions and dimensions, the test dimensions are more comprehensive, and the test result is more reliable.