68 results about "Radial stress" patented technology

The present disclosure relates to the technical field of stability control of surrounding rock of tunnelling, and provides an excavation compensation method for tunnelling in deep rock engineering, including: acquiring an engineering geological information of the tunnelling in deep rock engineering; determining an engineering hazard type based on the engineering geological information; determining an excavation compensation support strategy for the surrounding rock of the tunnelling in deep rock engineering based on the engineering hazard type; and performing a supplementary support control on the surrounding rock of the tunnelling in deep rock engineering based on the excavation compensation support strategy. Through the supplementary support strategy, the difference value between a radial stress of the surrounding rock of the tunnelling in deep rock engineering and an initial crustal stress can be reduced to within a preset approximate value range, further effectively preventing a stress concentration phenomenon occurred in a tangential stress.

The invention relates to the technical field of cables, and discloses a high-voltage cable with high safety performance. The cable comprises a conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, an inner buffer layer, a protective layer, a reinforced steel cable, an outer buffer layer and an outer protective layer which are sequentially and coaxially arranged from inside to outside. The protective layer is composed of a plurality of sets of protective units arranged in an array mode in the axial direction, and each protective unit is of an annular structure defined by a plurality of protective pieces in the circumferential direction. The inner wall and the outer wall of the protection piece are arc-shaped, steel cable grooves are formed in the two sides of the protection piece, and hollow grooves are formed in the protection piece; the multiple protection units are in staggered butt joint to form a continuous spiral surrounding structure. And the reinforcing steel cable is spirally wound and embedded in a spiral channel formed by the steel cable grooves of the protective sheets. Uniform conversion and dispersion from axial tension to radial stress are realized, the design of the rhombic protection sheets and the hollowed-out grooves is combined, the tensile resistance, extrusion resistance, impact resistance and cutting resistance of the cable are remarkably improved, and the cable is suitable for a complex laying environment.

The application discloses a high-performance motor rotor core, comprising rotor laminations, wherein a plurality of magnetic steel slot groups are arranged on the rotor laminations in a circumferential direction; the application has simple structure and reasonable design; stress reduction structures with central symmetry characteristics are arranged to effectively guide and release main radial stress in the magnetic bridge area, optimize stress distribution, avoid fatigue cracks caused by local stress concentration, improve fatigue life and structural safety margin of the magnetic bridge, and improve NVH performance, reduce electromagnetic harmonics, and improve stability and quietness of motor operation; in addition, the overall magnetic steel slot layout is optimized to realize reasonable reduction of material use and lightweight design of the rotor core, and improve power density and dynamic response capability under the premise of guaranteeing electromagnetic performance.

The application relates to the technical field of cables, and discloses a high-voltage cable with high safety performance. The cable comprises, from inside to outside, a conductor, a conductor shielding layer, an insulation layer, an insulation shielding layer, an inner buffer layer, a protective layer, a reinforcing steel cable, an outer buffer layer and an outer protective layer; the protective layer is composed of multiple groups of protective units arranged in an axial array, each protective unit is formed into a circular ring structure by multiple protective sheets arranged in a circumferential direction, the cross section of the protective sheet is in a prismatic shape, the inner and outer walls are in arc shapes, steel cable grooves are arranged on the two sides, and a hollow groove is arranged in the interior; the multiple protective units are staggered and connected to form a continuous spiral winding structure; and the reinforcing steel cable is spirally wound and embedded in the spiral channel formed by the steel cable grooves of the protective sheets. The application realizes uniform conversion and dispersion of axial tension into radial stress, and combines the design of the rhombic protective sheet and the hollow groove, so that the tensile resistance, extrusion resistance, impact resistance and cutting resistance of the cable are significantly improved, and the cable is suitable for complex laying environments.

The present application relates to the technical field of coal mine equipment, and discloses a self-moving device and a hydraulic system thereof, which comprises a base provided with sliding rails, two sliding bodies sliding along the sliding rails, two locking mechanisms respectively arranged on the sliding bodies and a driving mechanism connected between the two sliding bodies; wherein the locking mechanism is installed on the sliding body through a first hinged mechanism and cooperates with a limiting block to perform floating limiting, and the two ends of the driving mechanism are connected with the sliding bodies through a second hinged mechanism; each mechanism cooperatively acts to realize step-by-step displacement through alternating locking and driving. The present application realizes non-rigid connection through floating limiting of the hinged mechanism and the limiting block, automatically compensates the perpendicularity and position deviation between the base and the sliding body, releases radial stress, effectively prevents damage of the locking mechanism and the driving mechanism caused by unbalanced load, and ensures the stability and reliability of step-by-step displacement of the device.

The invention discloses a control method and device of a magnetic suspension rotor, a magnetic suspension system, a storage medium and a computer program product. A position detection assembly used for detecting the radial position of the rotor and a temperature collection assembly used for collecting the surface temperature of the rotor are arranged. The method comprises the steps that in the rotor operation process, current radial position data, collected by a position detection assembly in real time, of a rotor and current temperature data, collected by a temperature collection assembly in real time, of the rotor are obtained; calculating the real-time position deviation of the rotor according to the current radial position data; judging whether the rotor has radial expansion or not according to the real-time position deviation; if it is determined that radial expansion exists in the rotor, the thermal expansion coefficient of the rotor is calculated according to the current temperature data and the real-time position deviation; and generating a control signal based on the real-time position deviation and the thermal expansion coefficient, and adjusting the radial stress state of the rotor according to the control signal so as to correct the suspension position of the rotor. According to the scheme, rapid dynamic compensation of the rotor is realized.

The invention provides a physical experiment simulation system, and relates to the technical field of material mechanics tests, the physical experiment simulation system is based on an actual stress-strain curve, a simulation test piece three-dimensional model with a gap is established, cells are divided, a typical plane is selected, a groove cell, a slope bottom cell, a stretching cell and a gap cell are divided, and the physical experiment simulation system is obtained. The method comprises the following steps of: performing accurate simulation analysis on each position conveniently, directly simulating a real stretching effect in a stretching cell, acquiring radial stress at a groove cell according to a rotation trend generated by an intermolecular acting force, judging whether a notch cell and a slope bottom cell which serve as stress concentration points are in an elastic deformation stage or not through a vonMises yield criterion, and judging whether the notch cell and the slope bottom cell are in an elastic deformation stage or not. And the deformation condition of each cell caused by the influence of the stress is visualized, and the process and the result of the abnormal test result caused by the gap are intuitively displayed.

The invention discloses a reinforcement-solid waste concrete bonding strength prediction method based on an improved failure criterion, and belongs to the field of reinforcement-solid waste concrete mechanical modeling. The method comprises the steps that a simplified circular section is divided into a plastic area and an elastic area, and the two areas and a radial stress calculation equation provided by the passive constraint component are determined respectively; putting forward an extended Mohr-Coulomb criterion, and defining yield lines of an interface shearing behavior and a sliding behavior under a sufficient constraint condition; introducing a crack expansion factor to correct the strength of the solid waste concrete, and searching a to-be-optimized parameter value through a particle swarm optimization algorithm; and embedding the existing physical model into the residual error network loss function item to construct a residual error network model. The method can quantitatively describe the evolution law of the bonding strength of the reinforcing steel bar-solid waste concrete interface under different material and structure parameters, is high in prediction precision and strong in extrapolation capability, and is suitable for anchoring design and mechanical property evaluation of a reinforcing steel bar-solid waste concrete structure.

The present application relates to the technical field of wheel stress relief, in particular to a universal flexible thrust stop arm device. The device comprises an auxiliary mechanism, a frame arranged at both ends of the auxiliary mechanism, and an OPG speed sensor base. The auxiliary mechanism is composed of a sleeve rod body and a push rod in sliding connection with the inside of the sleeve rod body. A ball head body is arranged at the end of the sleeve rod body and the push rod. When the ball head body is in conformity with the base body and the end cover body, the ball head body is in rotational connection with the base body and the end cover body. Thus, when the subway vehicle generates axial and radial stress during operation, the sleeve rod body and the push rod can be inclined at a certain angle, avoiding the damage of the elastic bush structure, the loosening of the elastic bush of the OPG speed sensor base, the loosening of the fastening round nut of the OPG speed sensor base, the bearing jamming of the OPG speed sensor base, or the damage of the OPG speed sensor base.

The utility model relates to high -voltage electrical connection technical field, and disclose a kind of high-voltage connector butt joint structure with floating compensation function, including connector body and floating compensation device, connector body includes plug and socket, plug top is equipped with pin, socket is L letter shape structure, socket inner wall is equipped with the slot matched with the position of pin, floating compensation device is located on socket, floating compensation device includes the radial horizontal compensation component that socket is relative to plug can move along the horizontal direction perpendicular to butt joint axis, and axial compensation component moves along butt joint axis direction, axial compensation component is located on radial horizontal compensation component. Solve traditional rigid structure adaptation problem, through the synergistic effect of radial horizontal compensation component and axial compensation component, it can be flexibly compensated to installation error, avoid the radial stress generated by forcible butt joint, reduce assembly difficulty and improve efficiency.

The invention relates to the field of a stress calculation method of an underground pipe column, in particular to a three-dimensional stress field real-time calculation and safety evaluation method and system of the underground pipe column, and the method comprises the steps: collecting underground multi-source data; three-dimensional stress calculation is carried out on the basis that the tubular column material is isotropic and the stress-strain relation conforms to the linear elasticity theory; correcting a safety assessment result by taking the yield strength as a constraint condition, calculating thermal stress according to the temperature change values of the well bottom and the well mouth, and correcting the total stress; radial stress is corrected by combining radial pressure difference caused by internal pressure and external pressure, thermal stress is corrected in real time according to temperature change values of a well bottom and a well mouth, corrosion rate is calculated according to change of corrosive gas content, and a stress distribution result is corrected; and performing risk grading and early warning according to the relationship between the total stress and the yield strength. According to the method, precise modeling and calculation are carried out on the superimposed effect of stress in different directions, and the calculation precision is remarkably improved.

The invention provides a method for calculating friction inclined pile bearing capacity loss caused by excavation of a tunnel composite stratum. The method comprises the steps that tunnel parameters of a shield tunnel, structural parameters of an existing pile foundation and physical and mechanical parameters of a soil body are obtained; equivalently converting the elastic modulus of the multi-layer composite soil body into the elastic modulus of a homogeneous single stratum, analyzing the range and boundary radius of a plastic region and an elastic region of the soil body caused by tunnel excavation, and establishing a radial stress and circumferential stress distribution model of any position of the soil body; discretizing the inclined pile along the pile length, judging a stress area according to the distance from each point of the pile body to the center of the tunnel, calculating the main stress of the corresponding soil body, and solving the normal stress change of the pile-soil contact surface through conversion of an included angle between a pile shaft and the main stress direction; and calculating the side friction resistance change of each point of the pile body according to the normal stress change, obtaining the total bearing capacity loss along the pile length integral, and calculating the bearing capacity loss factor of the friction pile foundation. The calculation method disclosed by the invention is high in operability, simple and convenient in calculation and wide in application prospect.

The invention relates to the technical field of material analysis, and discloses a wire cold bending crack resistance evaluation method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining the radial stress and shear stress of a preset test point under each bending degree when a target wire is subjected to symmetric cold bending according to different bending degrees, determining the key bending degree based on the shear stress, and determining the bending degree of the target wire according to the key bending degree; determining a shear stress influence factor according to the shear stress corresponding to the key bending degree, determining a radial stress influence factor according to the radial stress corresponding to the initial bending degree, the tail end bending degree and the later bending degree, and determining cold bending crack resistance parameters of the target wire according to the shear stress influence factor and the radial stress influence factor. The method can break through the limitation that the existing standard only judges whether the crack exists or not, realizes full-dimension quantitative evaluation of the crack initiation tendency, the expansion direction and the expansion rate of the wire material, covers the core key index of the cold bending crack resistance, and improves the accuracy of wire material quality evaluation.

The transformer comprises an iron core, four steel channels are symmetrically arranged at the upper end, the lower end, the front end and the rear end of the iron core, the steel channels are connected through bolts, and three windings are evenly arranged in the middle of the iron core. The winding comprises long-edge arcs symmetrically arranged in the vertical direction and short-edge arcs symmetrically arranged in the left-right direction, the tangent lines of the long-edge arcs and the short-edge arcs at the connecting positions of the long-edge arcs and the short-edge arcs form angles of 2-4 degrees, and eight positioning and clamping mechanisms are symmetrically arranged in the vertical direction and the left-right direction of the winding. The positioning and clamping mechanism is installed at the joint of the long-edge arc and the short-edge arc and supports and fixes the winding in the longitudinal direction and the transverse direction, the winding structure composed of the short-edge arc and the long-edge arc is matched with the positioning and clamping mechanism to provide continuously-enhanced supporting force, and therefore the winding can be fixed in the longitudinal direction and the transverse direction. The radial stress is reduced by more than 20% compared with that of a traditional long circular winding, and the winding is effectively prevented from being damaged under short-circuit rapid impact.

According to the multi-supporting-rod seat lifting device and the electric vehicle comprising the multi-supporting-rod seat lifting device, the main supporting rod is combined with the at least one auxiliary supporting rod, the main supporting rod can conduct main loading, and the at least one auxiliary supporting rod can disperse dynamic stress and share radial stress; the problems that a traditional single supporting rod is provided with a single longitudinal stress path, loads are concentrated in the middle of a rod body, so that the bending moment is too large, and port fatigue is loose and becomes large are avoided, and the overall service life is longer. Meanwhile, one-rod or multi-rod unlocking of the main supporting rod or at least one auxiliary supporting rod can be achieved through the self-locking adjusting mechanism, and multi-rod unlocking can be achieved through single-time pressing.

The application relates to a semi-analytical method for analyzing the response of deep-buried tunnel excavation, which comprises the following steps: step 1) establishing a deep-buried circular tunnel excavation mechanical model, and solving the stress at the elastic-plastic boundary in the model by using a numerical method, wherein the stress comprises three components, namely radial stress, tangential stress and axial stress; step 2) dividing the plastic zone into n circular rings based on the finite difference method, and sequentially solving the stress components of each circular ring from the elastic-plastic boundary to the tunnel wall; step 3) solving the radius of each circular ring based on the stress components of the circular rings and the balance equation; step 4) decomposing the strain components, and solving the strain components of each circular ring based on the finite difference method; and step 5) solving the radial displacement based on the strain components. Compared with the prior art, the application has the advantages of improving the calculation efficiency of the three-dimensional semi-analytical method of finite difference.

The utility model discloses a real -time intelligent voice microphone based on noise reduction technique, including upper structure and lower structure, is equipped with the butt joint structure between upper structure and lower structure, through the multiple cooperation of thread connection, boss and recess joint, positioning column and positioning hole locking, middle ring cover and slot insertion, form three -dimensional locking structure, effectively resist vibration, external force impact etc. interference, avoid component loose, guarantee the stability of audio acquisition, solved the single locking structure of existing in mobile conference, outdoor recording etc. the problem of loose in scene, can be stably applied to various complex environment, make the noise reduction structure of microphone main part can be more focused on filtering environmental noise, the basic pre -tightening force is provided to thread connection, the circumferential rotation is limited to boss and recess joint, and the axial displacement is limited to positioning column and positioning hole cooperation, and the radial stress is dispersed further to middle ring cover and slot insertion, and four locking modes form complementation from different mechanical directions.

This invention discloses a residual stress detection platform for axles, relating to the field of rail vehicle inspection technology. The axle is supported by a rotating support module mounted on a tilting support module. A rotating drive module drives at least one support roller to rotate, causing the axle to rotate at different angles towards the detection instrument. This allows for detection at different angles on the same cross-section, ensuring the accuracy of measurement data and the consistency of repeated measurements. The detection instrument is placed on the top plate of a movable detection assembly. Moving wheels on the chassis move the instrument relative to the axle. After positioning, the height is adjusted via a lifting mechanism. For radial stress detection on cross-sections far from the end, a first translation stage can be used to move the instrument, extending it beyond the top plate and lengthening its reach, making it suitable for detecting axles of greater length.

This utility model relates to the field of thermos cup processing technology, specifically a device for forming internal threads in thermos cups. It includes: a lower mold, composed of a multi-lobed core-pulling structure, with a spirally wound groove on the outer wall of the top region of the lower mold, and a spring fitted inside the groove, the spring having a diameter larger than the groove diameter; and an upper mold, also composed of a multi-lobed core-pulling structure, having an inner cavity with a spirally wound threaded cavity on its wall. The advantages of this utility model are: this device uses axial extrusion forming, with the threaded cavities of the upper and lower molds applying a uniform axial force to the cup wall, avoiding deformation of the cup body caused by radial stress. Extrusion forming replaces the traditional rolling process, preventing cup body deformation caused by radial force. Simultaneously, the linkage design of the multi-lobed core-pulling structure of the lower mold and the pull rod achieves uniform radial force distribution, further ensuring the geometric stability of the cup body and guaranteeing the product's aesthetics and sealing performance.

The invention provides a woven fabric rubber cylindrical capsule with steel wires, which belongs to the technical field of industrial manufacturing, and is characterized in that a steel wire framework layer arranged in a spiral winding manner is arranged in a cylindrical main body to form a latticed radial support; a woven fabric reinforcing layer woven by polyester fibers is arranged on the outer side of the steel wire framework layer and fixed to the outer surface of the cylinder body in a vulcanization bonding mode so as to evenly disperse radial stress, a connecting flange is arranged outside the cylinder, and an adjusting bolt extends into a gap between the cylinder body and the woven fabric reinforcing layer to apply adjustable abutting force to the woven fabric reinforcing layer. The supporting framework composed of the central shaft rod and the supporting ribs is arranged in the cylinder to provide axial and radial two-way supporting, and the technical problem that the radial deformation amount is difficult to control accurately when the rubber cylinder type capsule bears internal pressure is solved.

The invention provides a magnetic drive pump with a bearing protection structure. The magnetic drive pump comprises a pump body, an impeller, a pump cover, a pump shaft, an inner magnetic component, an outer magnetic component, an isolation sleeve, a driving motor and a shaft system protection system. The system comprises a silicon carbide shaft sleeve sleeved on a pump shaft, a silicon carbide bearing matched with the shaft sleeve, and an elastic support and thermal compensation module. The module is composed of a PTFE drum-shaped ring contained in a pump shaft groove, the outer edge of the radial section of the drum-shaped ring is in an arc shape, an axial compensation groove is formed in the circumferential wall of the drum-shaped ring, and an axial notch is formed in the annular wall of the drum-shaped ring, so that the drum-shaped ring is in an unclosed ring shape with radial elasticity. Through the unique composite structure of the drum-shaped ring, radial stress generated by the difference of thermal expansion coefficients of the pump shaft and the silicon carbide shaft sleeve can be effectively absorbed under the high-temperature working condition, spalling of the silicon carbide shaft sleeve is fundamentally prevented, meanwhile, high coaxiality of the shaft sleeve and the pump shaft is ensured by means of linear contact supporting of the arc-shaped outline, and the service life of the shaft sleeve is prolonged. And the operation reliability and the service life of the magnetic drive pump under harsh working conditions are obviously improved.

The invention belongs to the technical field of subgrade differential settlement treatment, and discloses a vertical lifting displacement calculation method for lifting a subgrade through bag pipe method grouting, which comprises the following steps: horizontally arranging n bag pipes at the depth H right below a subgrade settlement section; the plastic zone radius Rp of the soil body around the bag pipe after grouting is determined; determining the radial stress sigmaRp at the boundary of the elastic-plastic zone by utilizing continuous conditions of stress and displacement at the boundary of the elastic-plastic zone; in the elastic area, the balloon tube expansion problem in the semi-infinite space is equivalent to the hole expansion problem in an infinite elastic body, and a displacement superposition method is adopted to calculate a soil displacement field caused by grouting of a single balloon tube; and calculating the vertical displacement distribution of the roadbed surface under the combined action of the n bag pipes based on an elastic mechanics superposition principle. The method has the advantages that the free boundary conditions of a soil body plastic zone and a semi-infinite body caused by grouting are accurately considered at the same time, and an accurate and reliable theoretical basis is provided for engineering design.

The invention relates to the technical field of TBM tunnel construction, in particular to a TBM tunnel supporting system suitable for extremely strong rockburst and a construction method.The supporting system comprises a plurality of energy absorption plate assemblies, and the energy absorption plate assemblies cover the rock wall of a tunnel and are spliced in the axial direction and the annular direction of the tunnel; a grouting cavity is formed between the face, facing the rock wall, of the energy absorption plate assembly and the rock wall, and the grouting cavity is filled with expansion grout. A plurality of grouting pipes are arranged in the energy absorption plate assembly, and the grouting cavity communicates with an inner cavity of the tunnel through the grouting pipes. One or more of the grouting pipes are provided with energy absorption anchor rods in a penetrating mode, and the energy absorption anchor rods penetrate through the grouting cavity and stretch into surrounding rock of the tunnel. By means of the slurry expansion effect, large expansion pressure is generated on the energy absorption plate assembly and the surrounding rock, the expansion pressure acting on the surrounding rock can rapidly supplement radial stress of the surrounding rock after tunnel excavation, the surrounding rock can recover the three-dimensional stress state in time, and instability damage caused by stress state damage to the surrounding rock is effectively controlled; and the occurrence probability of rockburst disasters is reduced.

The invention relates to a mechanical property regulation and control method and a control system of a light-weight carbon fiber composite material high-temperature actuator, and the method comprises the steps: winding a carbon fiber composite material layer on the actuator, and building a mathematical constitutive model; acquiring boundary conditions of the mathematical constitutive model according to high-temperature and high-pressure service conditions and axial and radial pressure bearing requirements of the actuator; combining a displacement continuous equation, an axial stress continuous equation, a radial stress jump equation, a zero-torsion equation and a performance test verification mathematical constitutive model of the actuator, and establishing a mapping relation library of winding process parameters and the overall mechanical property of the actuator; establishing a physical information neural network embedded with physical constraints and inputting winding process parameters, wherein the physical information neural network outputs local performance deviation of the actuator; and calculating the sensitive gradient of the performance deviation to the winding process parameters by using the physical information neural network, and adjusting the winding process parameters in real time.

The invention provides a tunnel surrounding rock circle layer structure load calculation method and device, and relates to the technical field of tunnel surrounding rocks.The method comprises the steps that geometric parameters of tunnel surrounding rocksare collected, and a tunnel support-surrounding rock model is built according to the geometric parameters; the tunnel support-surrounding rock model is equivalent to a plurality of secondary lining ring layers, primary support ring layers and a plurality of surrounding rock ring layers which are sequentially nested from inside to outside; adding a radial displacement continuous constraint condition and a radial stress continuous constraint condition on an interface of adjacent ring layers, and simultaneously establishing all radial stress balance differential models and deformation coordination models to construct a mechanical control system; after boundary constraint is given to the mechanical control system, the stress field of the mechanical control system is obtained through calculation with a numerical solution method.According to the method, accurate calculation of loads of all structural layers in the composite supporting system is achieved through the surrounding rock stress ring layer transfer effect theory, and a reliable basis is provided for tunnel supporting structure design.

A method of producing a centrifugal compressor impeller is provided. The impeller includes a hub with a rotational axis, a forward surface, and an aft surface. The aft surface extends between an outer radial surface of the impeller and a bore centered on the rotational axis. The method includes: analyzing the impeller to determine a stress field having tangential stress data values and radial stress data values as a function of radial position within the impeller hub and as a function of axial position within the impeller hub; contouring the aft surface so that the impeller hub has radial stress data values less than tangential stress data values for any radial position of the hub during operation of the impeller; and producing the impeller with the contoured aft surface.

The invention discloses a spiral anchoring system and method for a fiber reinforced thermoplastic resin composite material rib, and belongs to the technical field of civil engineering composite material anchoring. According to the anchoring system, an external load is transmitted to an anchoring sleeve through the bonding effect and the mechanical occlusion effect between the FRTP rib and a resin matrix, and an anchoring section of the FRTP rib is formed into a spiral gradually-expanding rod body with the outer diameter gradually increasing from the loading end to the anchoring tail end in the axial direction through pre-extrusion. According to the method, the screw rod body is screwed into the anchoring sleeve, the fiber reinforced resin filler is injected and then heated and cured, and the anchoring efficiency is improved by using a dual mechanism of mechanical occlusion and interface bonding. A spiral structure converts one-way shearing force transmission into space interlocking, and longitudinal slippage is remarkably restrained and a low-stress channel is eliminated through radial stress component diffusion, phase difference stress staggering and resin flow field disturbance; the spiral diameter gradually changes to form an initial sliding energy consumption area and a tail end rigidity strengthening area, and progressive load transmission and uniform shear stress distribution are achieved.

The invention relates to the technical field of anchoring foundations, and discloses a bearing platform type rock anchor rod foundation and a construction method thereof.The bearing platform type rock anchor rod foundation is installed in a bearing platform, a stand column is arranged above the bearing platform, and the bearing platform type rock anchor rod foundation comprises an anchor disc, a plurality of foundation bolts and a plurality of pressure diffusion assemblies; the anchor disc is horizontally arranged in the bearing platform, a spiral steel bar is fixed to the anchor disc, the lower end of the foundation bolt is connected with the anchor disc, the pressure diffusion assemblies are arranged on the periphery of the anchor disc in a surrounding mode, each pressure diffusion assembly comprises a pressure transmission rod, a bearing plate and a rib plate, the lower end of each pressure transmission rod is obliquely fixed to the anchor disc, and the other end of each pressure transmission rod is connected with the bearing plate in a welded mode. One end of the rib plate is connected with the pressure transmission rod, the other end of the rib plate is connected with the bearing plate, and the bearing plate is used for sharing vertical stress and radial stress of the anchor disc. The spiral reinforcing steel bars resist transverse expansion caused by stress concentration through annular wrapping, and the pressure diffusion assembly evenly disperses vertical and radial stress of the anchor disc to the whole bearing platform.

The application belongs to the field of superconducting magnet design, and relates to a superconducting magnet mechanical modeling analysis method, comprising the following steps: constructing a superconducting magnet material structure model, solving thermal stress and electromagnetic stress generated in the process of magnet cooling and operation, and analyzing the most dangerous area of stress in the magnet; constructing a material structure model of the coil in the dangerous area, solving the winding stress and thermal stress caused by cooling, taking the thermal stress as a prestress to solve the electromagnetic stress of the coil in operation, and analyzing the position of the strip with the largest stress; constructing a strip mechanical model, inputting the circumferential stress and radial stress of each layer of the strip with the largest stress in the superconducting coil as loads, taking the stress and strain of the inner and outer strips of the superconducting coil on the strip to be studied as constraints, solving the stress of the strip, and analyzing the delamination and tearing along the length direction of the strip. The application uses the superconducting coil mechanical model as a bridge to realize detection and evaluation of the mechanical failure of a single superconducting strip and the overall failure of the performance of the superconducting magnet.