84 results about "Static loading" patented technology

A true triaxial time-dependent dynamic disturbance test device for a deep-buried hard rock includes a rigid static load loading assembly and a rigid dynamic load loading assembly. The rigid static load loading assembly applies a static load to a rock test sample, and the rigid dynamic load loading assembly applies a disturbance stress to the rock test sample. Coupled application and control of a long time-dependent static force and a disturbance stress of the rock in a true triaxial disturbance stress state are achieved. The rigid dynamic load is provided with a disturbance rod in a loading direction, and a “point” disturbance mode is converted into a “face” disturbance mode through the disturbance rod, a disturbance hole and a test sample clamp, so that a disturbance mode more suitable for an actual working condition on site is provided while power consumption is reduced and time-dependent dynamic disturbance is achieved.

The invention discloses an anti-sliding friction force testing device under the action of high-temperature hot air, which comprises a loading sealing device, an air circulation heating system, a static force loading system and a temperature measuring system, the loading sealing device comprises a bearing frame, a bottom plate, a lower flange gland, a test piece, an upper flange gland, an upper exhaust cabin, a disc type loading tool, an upper pressing plate, a window and a window pressing plate, the air circulation heating system comprises a heating system and a ventilation system, and the air circulation heating system is connected with the loading sealing device through a circulation pipeline; the static force loading system comprises an oil source control upper computer, an oil source, a cooler, a hydraulic substation, a static force loading upper computer, a servo oil cylinder, a servo controller and a switching cabinet, and the temperature measurement system comprises a thermocouple sensor, a data acquisition instrument and a temperature measurement upper computer. The test system can be widely applied to the sliding friction resistance test of various wrapped interlayer assembly structures in normal temperature and high temperature states and the design and construction of the test system.

One aspect of the invention relates to a test specimen (100) for characterizing vibration damping in adhesive or sliding contact between two components subjected to vibration, low-cycle, and tribological stress, wherein the specimen is provided with male and female fasteners (130) comprising a protrusion (131) extending from a free end of a first longitudinal rod and a recess (132) recessed at a free end of a second longitudinal rod. A second aspect of the invention relates to an apparatus (300) for characterizing vibration damping in adhesive or sliding contact between two components subjected to vibration, low-cycle, and tribological stress, wherein the apparatus is provided with a test bench (300) on which the test specimen (100) is mounted, and wherein the apparatus includes a vibrator (310) for transmitting vibrational excitation to the test specimen (100) and a static loading device (320) for transmitting low-cycle stress to the test specimen. A third aspect of the invention relates to a method (400) for implementing the characterization apparatus (300).

The embodiment of the invention discloses an application management method and device, electronic equipment and a computer readable storage medium, and belongs to the technical field of application management.According to the embodiment of the invention, a dynamic loading path and a static loading path of a target application are obtained, and the static loading path and the dynamic loading path are fused; according to the embodiment of the invention, the target loading path of the target application is obtained, and the compressed file of the target application can be decompressed according to the target loading path in response to the starting instruction of the target application. Thus, by optimizing the loading path of the target application, the optimized target loading path can better adapt to the actual use scene of the target application, and meanwhile, the compressed file of the target application can be decompressed more efficiently and reasonably, so that the starting delay of the target application is effectively reduced, and the use experience of a user is improved.

The present application relates to a kind of suction bucket foundation multidirectional coupling bearing capacity evaluation method considering associated plastic flow of marine clay.The method is based on the associated flow characteristics of undrained clay plastic material,firstly, the numerical model of static loading of suction bucket foundation in undrained clay is established;Secondly, by displacement probe method, the bearing capacity of foundation under different proportional displacement loading is obtained;Finally, based on the rule of associated plastic flow, the same as the outer normal of bearing capacity envelope surface and displacement increment direction vector is used as the criterion, the bearing capacity envelope surface of suction bucket foundation (i.e. the maximum bearing capacity of foundation under multidirectional coupling load) is determined.Compared with prior art, the present application has the effect of considering the associated plastic flow of undrained clay plastic material, the method has clear physical meaning and is easy to implement, and can solve the problem that the existing model cannot accurately evaluate the bearing capacity envelope surface.

The application discloses a multifunctional rock dynamic and static loading experiment device and an experiment method, and belongs to the technical field of rock mechanics experiments. The device comprises a lower bearing, a rock heating assembly, a static load applying assembly, a magnetic field generating assembly and an acoustic emission detector. The lower bearing is provided with a dynamic load applying assembly and a controller. The rock heating assembly is used for heating a rock test piece. A pressure head in the static load applying assembly is located directly above the dynamic load applying assembly. The magnetic field generating assembly is used for providing a magnetic field environment for the rock test piece. The acoustic emission detector is used for detecting and analyzing acoustic signals emitted by the rock test piece. The rock heating assembly is used for simulating the influence of the ground temperature of the stratum where the rock test piece is located on the rock test piece. The magnetic field generating assembly is used for providing a magnetic field environment for the rock test piece, so as to simulate the influence of the surrounding magnetic field of the stratum where the rock test piece is located on the rock test piece. The influences of temperature and magnetic field on the rock test piece are comprehensively considered, and the obtained experimental results are more reliable.

This invention relates to the field of photovoltaic (PV) support technology, and discloses a method and apparatus for testing the strong wind resistance of cable-stayed PV supports. The method includes: conducting a static loading test on the PV panel to determine its ultimate wind resistance capacity; conducting a static tensile test on the connecting clips to obtain their ultimate tensile and compressive bearing capacity; conducting a static shear test on the connecting clips to obtain their ultimate shear bearing capacity; conducting a wind uplift test on the PV array; using aerodynamic testing to measure the wind load shape coefficient on the surface of the PV module and capture the abrupt change in the shape coefficient during the individual failure process of the PV panel; and using aerodynamic damping aerodynamic testing to measure the aerodynamic damping parameters of the PV panel under strong winds and their variation with wind speed. This invention enables strong wind resistance testing of cable-stayed PV supports, providing technical support for optimized support design.

The application discloses a pressure self-control device for a static load test of a foundation pile and a control method thereof. The pressure self-control device for the static load test of the foundation pile can automatically pressurize or depressurize according to a real-time pressure value, and realizes automatic operation in the whole process. Meanwhile, in the control method, different pressure control stages are determined according to a conversion result of an actual pressure value and a target pressure value, and the rotation speed of a driving unit is correspondingly adjusted to accurately adjust the oil outlet speed of hydraulic oil of an oil pump, so that the pressure self-control device realizes stepwise pressurization and stepwise depressurization, and the efficient and accurate pressure control is realized.

The present application relates to the technical field of bridge health monitoring and detection, and discloses a prefabricated assembled beam bridge longitudinal damage rapid diagnosis method, which comprises the following steps: collecting actual structure parameters of a bridge, establishing a bridge finite element calculation model for calculating a theoretical strain influence line; arranging strain measuring points at the longitudinal midspan of the two outer side beams and the middle beam of the prefabricated assembled beam, and performing a pseudo-static loading test; extracting the strain of the beam bridge strain measuring points, fitting and drawing a strain influence line; calculating the total strain meters of the two outer side beam strain measuring points; calculating the total strain meter change amplitude ΔS of the two outer side beam measuring points; establishing a ΔS column chart of the two in the same coordinate axis, and comparing with a longitudinal damage qualitative diagnosis graph system to obtain a qualitative diagnosis result. The prefabricated assembled beam bridge longitudinal damage rapid diagnosis method has the advantages of short diagnosis time, no interruption of traffic, improved economy, realization of rapid comprehensive diagnosis of the prefabricated assembled beam bridge longitudinal damage, and improved diagnosis accuracy.

The application discloses a kind of integrated photovoltaic module test method and material performance testing device thereof, belong to photovoltaic module test technical field, device includes integrated photovoltaic module, tensile test frame and static loading test frame;Method is as follows: test the density of integrated photovoltaic module, obtain the poisson's ratio of integrated photovoltaic module by axial tensile test, obtain the relationship between vertical displacement and uniform load of integrated photovoltaic module by mechanical loading test;Mechanical loading under the same uniform load is simulated by using finite element to establish photovoltaic module homogeneous model, the same displacement is obtained by adjusting the elastic modulus of photovoltaic module homogeneous model, and the equivalent elastic modulus of integrated photovoltaic module is obtained;Integrated photovoltaic module hidden crack test.The application obtains the mechanical property parameter of integrated photovoltaic module by the way of mechanical property test and finite element simulation, and the mechanical property of integrated photovoltaic module is evaluated before engineering implementation, and the reliability of integrated photovoltaic module is improved.

The invention belongs to the field of helicopter structural strength design, and relates to a seesaw type tail rotor hub fatigue test method. The method comprises the steps that test pieces of a seesaw type tail rotor hub shaft assembly and a shaft sleeve assembly are pasted and calibrated; determining a fatigue test static load and a dynamic load; the static load is centrifugal force, and the dynamic load is flapping bending moment and shimmy bending moment; determining a flapping load and a shimmy load applied to the process joint on the blade false piece through loading debugging, and determining a centrifugal force applied to the process joint on the blade false piece; and carrying out a teeterboard type tail rotor hub fatigue test. According to the seesaw type tail rotor hub fatigue test method, the seesaw type tail rotor hub fatigue test can be guided to be completed, the fatigue dangerous part and the fatigue failure mode of the seesaw type tail rotor hub are determined, and the blank in the field of seesaw type tail rotor hub fatigue test in China is filled.

The invention relates to a roller coaster arrangement (1000) comprising a car arrangement and a track (S) with at least one support device (100) having: a support base (10a) for anchoring the support device (100) in a foundation (F1, F2, F3); a support head (14a) that can be connected to the track (S) to transfer a static and dynamic load of the roller coaster arrangement (1000) into the foundation (F1, F2, F3); and at least one modular segment (12) arranged between the support base (10a) and the support head (14a). The support device (100) is designed as a single load-bearing column, with at least one segment (10, 12, 14) being designed as a prestressed spun concrete hollow body.

The application discloses a deep roadway dynamic and static load source cooperation integrated strong support method and system, belongs to the underground engineering roadway intelligent support technical field, and the method is as follows: capturing surrounding rock stress and energy events, establishing a correlation model, dividing the roadway space into a global static load bearing area and a dynamic impact key protection area; constructing an ultra-large tonnage prestressed anchor cable / rod, erecting a collapsible heavy U-shaped steel support and spraying a steel fiber concrete to form a composite surface protection structure, and then evaluating the cooperation performance; in the static load bearing structure, active energy absorption units are additionally arranged between main anchor rods / cables, and passive energy dissipation units are filled between the U-shaped steel support and the concrete spraying layer. The system is as follows: a load fine identification module is used for distinguishing two types of loads and dividing areas; a main strong support subsystem is used for implementing active and passive cooperative support; a key area buffer subsystem is used for strengthening the impact key area; and an intelligent monitoring feedback platform is used for dynamically evaluating the performance. The application can significantly improve the overall stability of the deep roadway.

The application discloses a multi-axle rock dynamic and static load testing machine, relates to basalt fiber new material rock detection, and comprises a testing machine body and a testing platform fixedly installed at the middle part of the testing machine body; a dynamic load assembly is arranged above the testing machine body, and the dynamic load assembly comprises a dynamic pressure applicator; wherein the dynamic pressure applicator carries out dynamic load testing on the fiber new material rock of the testing platform surface through adjustable speed impact and vibration; static load assemblies are arranged on the front and back sides of the testing machine body, and the static load assemblies comprise static pressure applicators; wherein the static pressure applicators move at a uniform speed. The multi-axle rock dynamic and static load testing machine processes multiple testing surfaces of new material rocks through a positioning mechanism and a dust removal mechanism, avoids damage of rock particles to stress points, simultaneously carries out testing and detection on new material rocks through dynamic and static load testing in a staggered distribution mode, and improves data accuracy and testing efficiency.

A connection system between a foundation and a reinforced concrete base slab characterized in that one or more point-arranged load-bearing connecting elements support the base slab on the foundation and thus absorb the static loads of the base slab and the loads acting on it, and that a load-free thermal break (7) lies between the base slab and the foundations independently of the load transfer between and in the connecting elements.

The present application relates to thrust bearing technical field, particularly to a kind of composite bearing equipment and its axial load supporting method, bearing equipment includes axial permanent magnetic levitation bearing device and magnetic medium lubrication thrust roller bearing device;Axial permanent magnetic levitation bearing device is used to generate repulsion type magnetic levitation force;Magnetic medium lubrication thrust roller bearing device includes upper thrust roller seat, lower thrust roller seat, magnetic conducting ring, magnetic lubricating medium and several rollers;Upper thrust roller seat and lower thrust roller seat are made of ferromagnetic material, and roller is fixed on lower thrust roller seat by magnetic force;Roller below is also provided with the permanent magnetic block or the roller positioning reverse permanent magnetic block that is arranged along circumference interval, separated by non-magnetic interval block;By forming circumferential magnetic circuit chain, magnetic lubricating medium is adsorbed on the surface of roller.By this bearing equipment and its axial load supporting method, static load can be supported, dynamic load can also be supported, and roller damage can be avoided.

The paint dipping device for motor production comprises a storage barrel, bearing discs are fixedly arranged on the two sides of the surface of the storage barrel, a hoisting mechanism used for hoisting a motor for paint dipping is arranged at the upper end of the storage barrel, and the hoisting mechanism comprises a stand column, a sliding rail, a sliding block, an electric hoist, a hoisting rope, a hoisting basket and an electric push rod. Stand columns are fixedly arranged at the four corners of the outer side of the storage barrel, sliding rails are fixedly arranged on the stand columns, sliding blocks are movably arranged on the surfaces of the outer sides of the sliding rails in a clamped mode so that the sliding blocks can move left and right along the upper ends of the sliding rails, and electric hoists are fixedly arranged at the lower ends of the sliding blocks. The two electric hoists are evenly arranged on the two sides of the lower end of the sliding block at intervals. According to the paint dipping device, the multiple paint dipping stations are arranged, so that when paint dipping is conducted on one station, standing feeding and discharging can be conducted on the other station, time can be fully utilized, and the machining efficiency of the device can be remarkably improved.

The present invention relates to a modular construction system in which a plurality of elements are assembled to form a desired structure. These elements are related by their dimensional proportions, allowing for the interchangeability of their location or orientation as required by the structure being assembled. The interchangeable elements are all related by different dimensional proportions, defined from a common reference element. The construction systems have a finite number of possible structural geometries, as the quantity, shape, and dimensions of their elements are geared towards the construction of structures with predetermined forms.The modular construction system of the present invention allows the construction of different geometric or geodesic figures with the same number of components and even the integration of modules that can be interconnected and interchanged randomly.To solve the problem of the limited number of geometries in the construction of structures due to dependence on the number of available elements, as well as to have an assembly with structural resistance capable of withstanding static and dynamic loads during its use, a modular construction system is used. This system comprises modular cubes, modular prisms, modular panels, modular rods, interconnection accessories, and joining elements; each of which has a dimension proportional to a reference element. This allows the assembly of these elements to constitute interchangeable modules so that the geometries that can be developed depend on the number of elements, since their dimensions allow them to be coupled in different arrangements and orientations.

The application provides a fatigue test load debugging method for a main hub central part of an unmanned helicopter, comprising the following steps: establishing a mechanical model according to a preset test loading scheme, and calculating theoretical values of a flapping force and a pitching force required to be applied to reach a target load; performing parameter configuration and parameter debugging on each load channel of a coordinated loading control system; performing static load and dynamic load working condition debugging on the main hub central part, so that the static load and the dynamic load meet test requirements; and on the basis of the static load and the dynamic load debugging of the main hub central part, performing low-cycle fatigue test load and high-cycle fatigue test load debugging on the main hub central part, so as to obtain input loads of a flapping force actuator and a pitching force actuator meeting test requirements. The technical scheme of the application solves the problem that the existing fatigue test mode of the main hub central part cannot guarantee that the loads of the hub center and the butt joint surface of the arm of the main hub central part meet test requirements at the same time.

This invention discloses a lightweight, integrated composite material truss body for special vehicles, comprising a metal truss and composite material armor. The composite material armor has a multi-layered structure, consisting of a ceramic layer, a structural load-bearing layer, and an energy-absorbing layer from the outside in. The metal truss is encased within the structural load-bearing layer as a supporting frame. The metal truss is made of titanium alloy. The metal truss is equipped with a drive wheel mounting flange, an idler wheel mounting flange, a road wheel balance elbow support, a track roller mounting seat, and a seat ring seat. The drive wheel mounting flange, idler wheel mounting flange, road wheel balance elbow support, track roller mounting seat, and seat ring seat are exposed outside the composite material armor. The metal truss of this invention is constructed from titanium alloy rectangular tubing welded into a single structure, offering a significant weight reduction advantage compared to traditional structural steel and aluminum alloys. This invention also addresses the challenges of complex tracked vehicle mobility systems, high requirements for relative dimensional accuracy between wheel systems, severe dynamic and static load impacts, and high rigidity requirements.

The invention provides a method and equipment for calculating the maximum normal stress of a suspension type tubular bus and a storage medium. According to the method, the tension increment of the insulator string under the working conditions of wind load, icing, earthquake, short circuit and the like is accurately quantified by constructing a dynamic response function of the insulator string, and the dynamic output force is introduced into a tubular bus multi-factor coupling analytical model as a boundary condition; therefore, the defect that a traditional linear superposition method neglects the dynamic coupling effect of an insulator-bus system is overcome. By establishing a space force transmission mechanism and a dynamic boundary condition updating strategy, the calculation precision of tubular bus stress distribution under the combined action of complex dynamic and static loads is remarkably improved, and excessive design or potential safety hazards caused by model distortion are effectively avoided.

The application discloses a rectangular roadway strain type disaster simulation test method based on elastic-plastic partition response, relates to the technical field of deep roadway strain type coal burst and gas outburst triggering mechanism research of mining engineering, and comprises the following steps: a coal sample containing a rectangular hole is prepared to simulate a rectangular roadway structure; loads in the horizontal direction and the vertical direction are synchronously applied to the sample to a preset value and are kept to simulate an initial ground stress balance state of the roadway surrounding rock; then, the stress in the horizontal direction and the vertical direction is synchronously removed; the accurate boundary of the elastic-plastic partition of the coal sample containing the roadway is quantitatively determined through gradient measurement of the sound wave velocity after unloading, and reliable structural basis is provided for partition monitoring and mechanism research. Finally, a strain type coal burst of the roadway side is triggered through bidirectional four-face axial quasi-static loading, and the static-dynamic mechanical behavior transition mechanism and the coal burst triggering mechanism are clarified based on the acoustic response, vibration and deformation characteristics of the elastic-plastic surrounding rock.

The application relates to a tunnel monitoring method, which comprises the following steps: determining a monitoring section of a tunnel, acquiring external force distribution information of the monitoring section, and determining a maximum external force position of a segment in the monitoring section; performing finite element static simulation analysis on the whole monitoring section of the tunnel to obtain internal force distribution information of the monitoring section under external static load; performing finite element dynamic simulation analysis on the whole monitoring section of the tunnel to obtain acceleration distribution information of the segment at different positions under external dynamic load; obtaining a maximum stress position and a maximum segment acceleration position of the monitoring section based on the internal force distribution information and the acceleration distribution information; and setting monitoring sensors at the maximum external force position, the maximum stress position and the maximum segment acceleration position respectively to obtain monitoring data of the monitoring sensors. The application effectively monitors the stress and vibration conditions of weak links of the tunnel, and simultaneously provides long-term monitoring of the health of the underground tunnel and early warning of dangers such as external malicious excavation.

This invention provides a structural response testing method for icebreaking structures based on deformation field equivalence, belonging to the technical field of computer-aided design. The method includes: acquiring actual ice condition parameters for target icebreaking and mapping them to model icebreaking working condition parameters to construct a flat ice impact test condition, and controlling the collision velocity to be consistent with the upward icebreaking velocity parameters; constructing alternative fixtures based on the flat ice impact test condition and establishing structural response equivalence relationships; extracting the correspondence between structural deformation and collision force based on the structural response equivalence relationships, thereby determining load equivalence relationships; converting dynamic ice loads into quasi-static ballast loads according to the load equivalence relationships and constructing a quasi-static loading condition; outputting structural response results based on the quasi-static loading condition and inverting the actual ice condition parameters for target icebreaking. This invention can establish an equivalence relationship between actual dynamic ice loads and controllable test conditions, thereby improving the accuracy of the test results in inverting real ice condition parameters.

The invention belongs to the technical field of aircraft composite material structure acoustic fatigue test design, and particularly relates to an aircraft composite material structure acoustic fatigue test device and method.Static pressure loading of a test piece is achieved through a static load loading device, and the loading mode that a composite material structure is pressed can be truly simulated; the loading error in the test process is reduced, the complex situation that the composite material structure is subjected to the combined action of acoustic load, static load and temperature when an airplane flies in the air is truly simulated, the accuracy of test assessment is ensured, an S-N curve is expanded into a multi-factor model, an acceleration test is designed, and the test efficiency is improved. And the fatigue life of the composite material structure can be quickly predicted in a complex environment.

A rehabilitation system for use with a limb brace assists a user in regaining, flexion, extension and hyperextension flexibility in an injured joint as well as aiding in resistance training in order to regain lost muscle mass about the joint. The system uses a pair of band holders that are rapidly attached to and detached from the pair of aligned brace legs of the brace, each holder having a receiver. An interchangeable resistance band is removably received within each receiver, either in the posterior or anterior position, held therein by bulbous ends of the band. The resistance band introduces static loading when the user is at rest as well as dynamic loading when the user is utilizing the joint. A pulley system can be used to offer the resistance band a medially located pivot point so that the resistance band offers variable resistance during dynamic loading.

The invention discloses a strain type shape righting force sensor for aircraft panel assembly, and belongs to the technical field of tool installation and detection.The strain type shape righting force sensor comprises a first screw rod, a through hole penetrating through the two ends of the first screw rod is formed in the center of the first screw rod, and a sensing assembly is arranged at one end of the first screw rod; the sensing assembly comprises a first plate body connected with the end of the first screw, and a strain gauge is arranged between the first plate body and the first screw. According to the invention, the in-situ monitoring of the shape righting force is realized, the problem that the existing sensor cannot carry out accurate measurement under the working conditions of large force value and long-time static loading is solved, the real-time measurement requirements of shape righting tension and pressure of multiple loading points of a large aircraft component are met, and the assembly precision and efficiency are ensured.

The invention discloses a soil stabilizer curing performance test analysis method, and relates to the field of soil stabilizer curing performance tests.The method comprises the steps that a load-displacement curve and a microscopic video stream in the quasi-static loading process are obtained; load values representing crack initiation, stable propagation and unstable propagation characteristic inflection points and corresponding timestamps in the load-displacement curve are extracted; identifying a pixel coordinate of the crack initiation point, performing spatial matching on the pixel coordinate of the crack initiation point and positions of pores and interface defects in the background structure feature map, and judging a defect type from which the crack initiation point originates; the method comprises the following steps: acquiring a crack path from a crack initiation point to instability propagation, extracting tortuosity and the number of branches, combining the strain field concentration degree of a crack tip and a crack origin type at different loading stages, analyzing leading reasons causing sample damage, and realizing collaborative analysis of loading mechanical behaviors and microscopic deformation evolution. And the destroy mechanism of the solidified soil can be identified.

The invention discloses a rock dynamic and static tension and compression multi-field coupling test device, and relates to the technical field of rock dynamic load, static load, tension and compression, shearing, rheology, temperature, seepage, chemistry, ultrasonic wave, acoustic emission, resistivity and other multi-field coupling tests. The device comprises a counter-force frame, a dynamic / static force loading system and a sample base, the dynamic / static loading system comprises an axial dynamic / static loading oil cylinder fixed on the inner wall of the top plate of the counter-force frame, an axial dowel bar, a dowel bar sealing barrel and a confining pressure chamber structure; the sample is arranged at the top of the sample base; the confining pressure chamber structure comprises a confining pressure chamber lifting rod groove and a confining pressure chamber lifting rod. In the triaxial tensile test process, the end part of the test sample does not need to be glued, the test sample adopts a dumbbell-shaped test sample shape design, the axial tensile force is provided by using a confining pressure loading system and adopting confining pressure, and the axial tensile test of the rock under different confining pressure conditions can be realized.

A quasi-static loading system and method for planar local loading is proposed. Currently, there is no accurate method to simulate the complex stress state of a shear wall under the anchoring effect of equipment. In this invention, a bottom boundary fixing member is set at the bottom of the reaction gantry. An out-of-plane local load loading component is provided on the top surface of the bottom boundary fixing member. Vertical loading components and in-plane horizontal transverse loading components are set inside the reaction gantry. A placement part for the mating specimen is formed between the bottom side of the loading beam and the top surface of the bottom boundary fixing member. Two horizontal actuators are respectively set at both ends of the loading beam. One end of each horizontal actuator is connected to the loading beam, and the other end of each horizontal actuator is set on the inner side wall of the reaction gantry. The quasi-static loading method involves applying a predetermined vertical axial force to the specimen according to predetermined requirements, performing prestressing tensioning in stages and / or supplementary tensioning, and then performing horizontal cyclic loading until the specimen's bearing capacity drops to 85% of the peak load, at which point the loading process is terminated.