595 results about "Structural stability" patented technology

The invention discloses an equipment health state dynamic prediction method fusing digital twinning and multi-scale evaluation, and relates to the technical field of equipment health prediction of an active launching platform, and the method comprises the steps: laying multiple types of sensors on a mechanical structure layer, a hydraulic execution layer, an electric control layer and an environmental action layer of the active launching platform; multi-source operation data such as stress strain, pressure torque, temperature power and environment load are collected in real time, and a standardized input parameter set is formed; and constructing a multi-layer digital twinborn model, forming a multi-scale twinborn mapping matrix, calculating a healthy coupling evolution coefficient, and evaluating the stability of the multi-layer collaborative structure of the platform. Calculating a multi-scale stability coefficient, and updating the multi-scale twin mapping matrix; and calculating a dynamic prediction driving index to realize prediction reliability judgment and digital twin model self-learning updating. And a health prediction closed loop of digital twinning and physical equipment is realized.

The invention belongs to the technical field of gear precision machining, and particularly relates to a high-precision machining method for a complex curved surface gear, which comprises the following steps: acquiring a gear three-dimensional model and planning an initial machining path; tooth profile errors are predicted based on the path, and real-time dynamic compensation is conducted in the machining process; predicting a heat treatment deformation trend based on the compensated motion trail and the real-time data; adjusting heat treatment process parameters according to the predicted deformation trend; and detecting the final state of the gear after heat treatment, and updating the error prediction and compensation model according to a detection result. According to the method, real-time error compensation in the machining process is associated with predictive control of heat treatment deformation to form a closed loop, the problem that in the prior art, machining precision and structural stability after heat treatment are difficult to cooperatively guarantee is solved, and high-precision and high-reliability unified manufacturing of the complex curved surface gear is achieved.

The invention relates to the technical field of construction engineering quality safety management, and discloses a quality safety control and engineering cost correlation analysis early warning method based on big data. The method comprises the following steps: acquiring concrete strength and reinforcement protective layer thickness data through a sensor, and generating an original data set by combining manual measurement and verification; identifying a factor group associated with the structural stability and the corrosion risk through standardization processing and clustering analysis; predicting potential rework cost by using a neural network model, and calculating a risk influence score; dynamically adjusting a quality safety factor weight according to a construction stage, and optimizing a comprehensive index in combination with a project type; and generating a real-time cost risk early warning signal and determining an early warning level by extracting trend change of the optimization index and adopting threshold comparison. According to the method, the multi-source data is fused, the weight is dynamically adjusted, quantitative linkage and dynamic early warning of the construction quality and the construction cost risk are achieved, the accuracy and the real-time performance of construction quality monitoring are improved, and the construction cost risk is effectively reduced.

The invention relates to the technical field of powder metallurgy materials, and discloses a binding-phase-free hard alloy and a preparation method thereof.The binding-phase-free hard alloy comprises, by mass, 75-80 parts of WC; 8 to 12 parts of TiC; 5 to 8 parts of TaC; 3 to 5 parts of ZrC; 1.5 to 2.5 parts of HfC; 0.8 to 1.2 parts of rare earth oxide; the preparation method comprises the five key steps of core-shell structure composite powder preparation, high-energy beam melting gradient accumulation, microwave-magnetic field composite field activation, multi-stage pressure plasma sintering and staged variable-rate gradient cooling. And component gradient design is cooperated with a multi-field coupling process. Through collaborative design of a core-shell structure hard phase and a gradient composite phase, and in combination with a multi-field coupling activated sintering and gradient cooling process, the problem of obdurability balance of the non-binding-phase hard alloy is solved, the microstructure stability is optimized, and the comprehensive performance and the process controllability are improved.

The invention provides a wind tunnel airflow and structure response coupling analysis method, and belongs to the technical field of wind tunnel construction, and the method comprises the steps: installing a multi-sensor array at a wind tunnel test section to obtain a structure response time sequence set, starting a GPU double-layer calculation unit to carry out the fluid mechanics calculation, and obtaining an airflow mass vector matrix; a time domain superposition algorithm is utilized to construct an airflow superposition feature matrix to extract multi-frequency domain response features, an airflow skewness stability matrix is calculated to quantify the asymmetry influence of an airflow field, a structural response stability feature matrix is established to represent structural stability features, and the four feature matrixes are input into a wind tunnel coupling prediction model for training and prediction. The hierarchical fusion weight parameters are dynamically adjusted through the adaptive adjustment function to adapt to different working conditions, a high-precision airflow quality prediction result is finally output, and the technical problems that in a wind tunnel test in the prior art, airflow and structure response coupling analysis precision is low, and calculation efficiency is insufficient are solved.

The invention discloses a flexible riser vibration response characteristic analysis method, and relates to the technical field of ocean engineering. According to the method, a flexible riser vibration model is established based on a vibration theoretical model and a fluid control equation for vibration analysis, a theoretical time domain response curve of the flexible riser is obtained through MATLAB calculation, and then a flexible riser three-dimensional simulation model is established in an ANSYS Workbench integrated simulation platform. According to the method, a flexible riser three-dimensional simulation model is constructed, material constitutive parameters, boundary conditions and load application of the flexible riser three-dimensional simulation model are configured, then simulation is performed in an ANSYS Workbench integrated simulation platform by using the flexible riser three-dimensional simulation model, bidirectional fluid-solid coupling analysis is performed by coupling a Fluent flow field system and a Transient Stratum module, the radial displacement time history of the flexible riser under a preset working condition is obtained, and the radial displacement time history of the flexible riser under the preset working condition is calculated. And extracting resonance characteristics of the flexible riser. According to the method, the vibration response characteristics of the deep-sea flexible riser under the influence of internal and external fluids in the service process are accurately obtained, and a foundation is laid for guiding the structural stability of a deep-sea operation system.

The embodiment of the invention discloses a gear pump shell topological optimization method and device based on an SIMP variable density method and a gear pump shell. The method comprises the steps that a three-dimensional model of the gear pump shell is established; performing statics analysis on the three-dimensional model to obtain stress and deformation distribution under different working conditions; taking the mass minimization of the shell as an objective function, taking stress and deformation distribution as constraint conditions, taking material distribution as a design variable, and adopting an SIMP variable density method to construct a topological optimization model; solving the topological optimization model to obtain optimized material distribution; and performing geometric reconstruction on the three-dimensional model based on the material distribution to obtain a reconstructed three-dimensional model. According to the scheme, material distribution is optimized through the SIMP variable density method, on the premise that the structural strength is guaranteed, the mass of the gear pump shell is greatly reduced, the stress distribution of the optimized shell is more uniform, and the structural stability and deformation resistance of the shell under the high-pressure working condition are remarkably improved.

The invention relates to the technical field of building construction, in particular to a BIM-based squat silo sliding formwork device and a construction method thereof.The BIM-based squat silo sliding formwork device comprises a door-shaped support, a lifting system, a formwork system and an operation platform system, a horizontal control rod is arranged on the door-shaped support and comprises a fixed section and a control section, and the fixed section is connected with the lifting system; the sliding formwork device comprises a door-shaped support, a fixed section and a control section, the fixed section is connected with a left supporting leg and a right supporting leg of the door-shaped support, the control section vertically extends into a concrete pouring cavity formed by the formwork system, a roller is further arranged on the control section, and the roller abuts against a squat silo wall reinforcement cage. The distance between the steel reinforcement framework and the concrete contact face of the formwork system can be effectively controlled, collision and friction between the formwork system and the steel reinforcement framework are avoided, and therefore the position accuracy and the structural stability of the steel reinforcement framework are guaranteed, and the pouring quality of concrete on the wall of the squat silo is improved.

The invention relates to a cable optimization method and system based on multi-strand insulated wire twisting and thermal management in the field of intelligent manufacturing, and the method comprises the steps: constructing a three-dimensional wire core distribution model according to an optimized twisting parameter set, judging whether the wire core distribution reaches a preset uniform threshold value or not, and obtaining a uniform twisting structure description; if the uniform twisting structure description meets a threshold value, heat conduction related characteristics are extracted from the description, finite element analysis is adopted to simulate heat distribution, and a heat accumulation area is determined; acquiring temperature field data of the insulating material according to the simulation result of the heat accumulation area, and judging whether the temperature field exceeds an aging threshold value or not to obtain a heat dissipation efficiency evaluation index; according to the heat dissipation efficiency evaluation indexes, heat conductivity parameters are adjusted, secondary optimization is conducted on the adjusted parameters through a genetic algorithm, and an enhanced heat dissipation design scheme is obtained; and if the enhanced heat dissipation design scheme meets the structural stability requirement, integrating the scheme with the uniform twisting structure description, and determining a comprehensive cable performance model.

The invention discloses a water conservancy project full life cycle operation and maintenance management method and platform, and relates to the technical field of water conservancy project management.The weir crest water level Hw, the gate flow Qo, the gate opening and closing pressure Pg, the structure dip angle Gq and the iron concentration cFe are accurately collected through a multi-source physical sensing unit; and the sensor type, the arrangement position and the acquisition condition corresponding to each parameter highly accord with the operation characteristics of the water conservancy project, so that the data source is stable, the coverage is wide, and a high-frequency real-time data sensing system is formed. The mechanism breaks through the problem of low credibility of previous parameters, and lays a high-quality data foundation for subsequent operation state modeling and situation map construction. A structural stability correlation function constructed based on a water conservancy physical mechanism is introduced as an evaluation index, sliding window recognition and inversion repair are performed on abnormal fluctuation in original data, and different from a conventional statistical elimination method or an interpolation filling method, reasonable traceability correction can be performed by using a known physical relationship of a system.

The invention provides a jacket type offshore electrical platform optimization method based on a sequential quadratic programming algorithm. The jacket type offshore electrical platform optimization method comprises the following steps: S1, establishing a parameterized offshore electrical platform structure analysis model; s2, calculating an environmental load borne by the offshore electrical platform by adopting an equivalent static load method; s3, establishing an offshore electrical platform optimization model which comprises a target function and a constraint function; s4, performing optimization design by adopting a sequential quadratic specification algorithm; and S5, performing dynamic analysis on the optimal structure, judging whether the optimal structure meets a constraint condition or not under a dynamic load working condition, if so, ending optimization, and if not, manually adjusting the size of the component which does not meet the constraint until the constraint condition is met. According to the method, the sequential quadratic programming algorithm is adopted, the optimization efficiency is high, the engineering optimization requirement is met, the size optimization of the offshore structure considering the pile-soil interaction under wind, wave and flow loading can be achieved, and the cost is further reduced on the premise that the structural stability and safety are guaranteed.

The invention provides a performance prediction method for a hafnium oxide semiconductor material structure, and relates to the technical field of semiconductor material research and development. The method comprises the following steps: performing global search in an Hf-O binary system by using crystal structure prediction software, determining the most stable two-dimensional Hf2O4 crystal structure, and further confirming the crystal configuration through structure optimization; calculating an Hf2O4 crystal structure by using density functional theory calculation software, and evaluating the dynamic, thermodynamic and mechanical stability of Hf2O4 by using a calculation result system; the electronic property of the Hf2O4 is obtained through further deep calculation, and the structural stability and semiconductor characteristics of the Hf2O4 are verified. According to the invention, through the first principle and the evolutionary algorithm calculation, the simulation calculation is used to replace the traditional trial-and-error experiment, and the novel semiconductor material with high reliability can be efficiently explored; a theoretical basis is provided for the design of a novel high-performance semiconductor material in advanced chip manufacturing, the research and development period can be expected to be remarkably shortened, and the cost can be reduced.

The invention relates to the related technical field of angle steel welding, in particular to an angle steel tower angle steel machining automatic welding machine which comprises a welding base and a welding gun head for welding L-shaped angle steel, and an inclination angle adjusting assembly is arranged in the welding base and used for adjusting the inclination angle between the welding gun head and a welding seam. An arc-shaped movable block arranged in the inclination angle adjusting assembly drives a welding piece to conduct angle adjustment in the vertical direction, the inclination angle adjusting assembly comprises a driving rod, an arc-shaped driving plate and an arc-shaped driving block, and a rotating twisting assembly is arranged on the driving rod. High-resolution adjustment of the angle of the rotating disc is achieved through the rotating twisting assembly, the accuracy of welding alignment is guaranteed, flexible adjustment of the inclination angle is achieved through the inclination angle adjusting assembly, the welding gun head is aligned in the best posture, and continuous and seamless welding of the side edge of the L-shaped angle steel is achieved through the concentric-square-shaped surrounding assembly.

The invention provides a nuclear power generator compactness test method. The nuclear power generator compactness test method comprises the following steps: S1, cleaning; and the to-be-detected product is comprehensively cleaned. S2, preparation before measurement; and the end socket and the cover plate are assembled to ensure that the product forms a sealed cavity. And S3, carrying out an airtight test. And S4, preliminary inspection. And S5, carrying out a hydrostatic test. And S6, performing secondary inspection. And S7, reducing the pressure. And S8, dismounting the end socket and the cover plate, and completing the detection. By combining the airtight test and the hydrostatic test, the compactness of the nuclear power generator can be comprehensively detected, a detection blind area possibly existing in a single test method is effectively avoided, a special pressure boosting and reducing mode is adopted for hydraulic pressure detection, the accuracy and reliability of a test result are guaranteed, welding residual stress can be effectively eliminated, and the reliability of the nuclear power generator is improved. And the sealing performance and the structural stability of a nuclear power generator product are obviously improved.

The invention discloses a construction system suitable for a partition wall in a double-arch tunnel, the construction system comprises a guide rail assembly, a guide rail supporting assembly and a roller assembly, the guide rail assembly is installed at a set position of an arch wall and is reinforced through the guide rail supporting assembly, and during use, a formwork trolley is in sliding fit with the guide rail assembly through the roller assembly; the concrete is poured to the position between the adjacent steel formworks installed on the formwork trolley; the structure that the guide rail assembly used for sliding of the formwork trolley is arranged on the arch wall is adopted, the problem that the construction precision is insufficient due to reference deviation and unstable supporting in a traditional technology can be solved, potential quality hazards of follow-up main tunnel construction are eliminated, and the safety and structural stability of mid-partition wall construction are enhanced; and meanwhile, the operation process is simplified, the labor cost and the material cost are reduced, and the construction efficiency is improved on the basis that it is guaranteed that the construction quality is accurate and controllable.

The invention discloses an inflatable returner structure safety analysis method and system considering a thermo-pneumatic elastic effect, and the method comprises the steps: building a structural dynamics sub-model, a fluid domain calculation sub-model and a structural thermodynamics sub-model of an inflatable returner, and comprehensively considering the structural thermal deformation caused by aerodynamic heat and the thermal expansion effect of an internally inflated gas; and a bidirectional coupling relationship among aerodynamic force, aerodynamic heat, structural deformation, temperature and internal charging pressure is constructed through the feedback effect of structural deformation on a flow field and an aerodynamic load. And carrying out multi-physics field simultaneous solution by adopting a time step propulsion method, and finally realizing comprehensive safety evaluation of the temperature, stress and deformation characteristics of the structure. According to the method, aerodynamic load distribution, temperature field change, stress response and vibration characteristics of the inflatable returner in the reentry process can be accurately predicted, so that the thermal protection performance and structural safety of the inflatable returner are comprehensively evaluated, and reliable analysis means and engineering basis are provided for optimization design and structural stability improvement of a thermal protection system.

The invention discloses a flow-state backfill material and a matching ratio design method and system thereof based on coupling simulation. The method comprises the following steps: S1, initial parameter setting and material characterization; s2, CFD simulation and primary optimization of macroscopic workability; s3, DEM simulation and secondary optimization of microstructure stability are carried out; and S4, coupling iteration and final mix proportion determination. The invention relates to the technical field of crossing of civil engineering material design and computer simulation, and can solve the problems of long design period, high cost and unclear mechanism of the mix proportion of a flow-state backfill material in the prior art.

The invention relates to a light-weight ship buffer seat suitable for high sea conditions and high navigational speed and a using method, the light-weight ship buffer seat comprises a lower mounting plate, an upper mounting plate and an X-shaped adjusting structure connected between the lower mounting plate and the upper mounting plate, and the X-shaped adjusting structure is composed of a spring damper and an elastic deformation guide frame. The installation angle of the spring damper is changed through the lead screw mechanism, and the vertical equivalent stiffness and damping of the spring damper can be dynamically adjusted. Meanwhile, the guiding and limiting connecting rod assembly is made of high polymer materials, and on the premise that the guiding and limiting functions of the structure are achieved, the weight is obviously reduced. The technical problem that under the broadband high-amplitude continuous impact of the ship, the comfort of passengers, the structural stability and the light weight of equipment are difficult to consider at the same time is effectively solved.

The application relates to a multi-arch synchronous installation process, which comprises the following steps: S1. Dividing arches into at least one middle section and multiple side sections according to the arch span required by a tunnel, and hingedly connecting the middle section and the side section at the inner arc sides of the two or hingedly connecting the middle section and another middle section at the inner arc sides of the two; S2. Welding cross ribs and meshes on the middle section and the side section; S3. Hoisting the middle section and the side section hingedly connected thereto into the tunnel together, lifting the middle section to make the middle section fit the tunnel dome, lifting the side section to make the side section fit the upper part of the tunnel side, locking the middle section and the side section or the middle section and another middle section, and supporting the connecting part of the two along the arc surface contour; and S4. Installing another side section on the ground of the tunnel side to support the side section connected with the middle section, and locking the two adjacent side sections. The application has the effect of significantly improving the shearing resistance of the joint part of the multi-arch, thereby improving the bearing capacity and the structural stability of the multi-arch.

The utility model discloses groove-shaped plate processing equipment, and relates to the field of groove-shaped plate processing. Through the arrangement of the sliding groove, the sliding plate, the L-shaped plate and the pressing plate, under the action of the sliding groove, the L-shaped plate and the pressing plate can rotate, then the L-shaped plate and the pressing plate can flexibly and freely rotate, the rotating mechanism brings great convenience to plate machining, plates of various shapes and specifications can tightly lean against the L-shaped plate, and the machining efficiency is improved. Under the action of the rotating plate and the scales, the sliding plate rotates, the radian of the groove is accurately controlled, measurement errors are reduced, clear scale marks enable data reading to be simple and visual, working efficiency is improved, the device is used for positioning parts or tools, machining accuracy and precision are guaranteed, and the device is suitable for popularization and application. The grooving width is kept uniform, the construction quality is improved, the measurement and adjustment time is shortened, meanwhile, the structural stability is enhanced, and the convenience and safety of the plate in the grooving process are improved.

The utility model provides a drill bit of a cantilever heading machine, which relates to the technical field of mining and tunneling equipment and comprises a drill bit body and a plurality of blades arranged on the drill bit body. An adjusting mechanism used for automatically adjusting the cutting angle of the blade is arranged on the drill bit body and comprises an angle sensor, a controller and a driving part, the angle sensor is used for detecting the cutting angle of the blade and generating a cutting angle signal, and the controller is provided with a preset cutting angle range; the controller compares the cutting angle signal with a preset cutting angle range, and when the cutting angle signal exceeds the preset cutting angle range, the driving piece is controlled to adjust the cutting angle of the blade to be within the preset cutting angle range. The adjusting mechanism comprises a hardness detection unit and a speed detection unit which are arranged on the drill bit body and used for detecting the rock stratum hardness and the drilling speed. By intelligently adjusting the cutting angle, the wear resistance is improved, the structural stability is enhanced, the cutting efficiency of the drill bit is improved, and the service life of the drill bit is prolonged.

The invention consists in simultaneously ensuring structural stability while allowing the presence of installation channels, as a result of the force-fitting connection between the construction (2) and the wall (1).

This invention discloses a dynamic method for determining the stability of support structures in deep foundation pit construction, relating to the field of engineering structure monitoring and diagnosis technology. The method includes: collecting multi-source heterogeneous data of the deep foundation pit support structure for preprocessing to generate a complete reconstruction sequence; constructing stability labels and combining them with the complete reconstruction sequence to build training samples, constructing a master decision model, using the training samples as input to the master decision model, outputting a predicted probability distribution, and selecting a final decision label; obtaining auxiliary labels based on the final decision label, and performing label consistency determination to obtain consistent-inconsistent results; then, based on the inconsistent results, extracting predicted probabilities for penalty correction, and performing label credibility-untrustworthiness determination to obtain credible-untrustworthiness results. This invention improves the accuracy, robustness, and engineering feasibility of determining the stability of support structures.

The invention relates to the technical field of particle accelerators, and provides a medium-assisted acceleration structure and method for realizing low loss and high acceleration gradient by using a low-temperature environment. The structure comprises a medium-assisted acceleration structure body and a low-temperature maintenance and control system, the medium-assisted acceleration structure body comprises a medium layer and a metal cavity to provide electromagnetic field distribution, and the low-temperature maintenance and control system is integrated on the body to maintain the working temperature of the body to be less than or equal to 77K, reduce resistance and dielectric loss and improve a radio frequency breakdown threshold; according to the invention, the radio frequency breakdown threshold is increased at a low temperature, so that the acceleration structure stably operates under higher electric field intensity, and the particle energy gain is increased; the metal resistivity and the dielectric loss are synchronously reduced, the total power loss is reduced, and the energy efficiency is improved; micro-discharge and gas desorption effects are inhibited, the structural stability is improved, and the service life of equipment is prolonged; through low-temperature adaptive design and systematic integration, electromagnetic performance and mechanical reliability are ensured, and the synergistic advantage of low temperature and medium assistance is exerted.

The utility model discloses an overhanging structure for a bay window of a building, which belongs to the technical field of bay window overhanging, comprises a bay window component, and is characterized in that an upper hanging component and a lower supporting component are arranged, so that the bay window component can be hung on the bay window; the mode that a traditional cantilever structure purely depends on a cantilever beam or plate to extend outwards from a building body to support a bay window is changed, bay window load distribution is more uniform, too large bending moment is prevented from being generated at the cantilever root, the large section size and the reinforcement quantity needed by the position for resisting the bending moment are reduced, the material cost and the structure self weight are reduced to a certain degree, and the construction efficiency is improved. Meanwhile, by means of the up-and-down cooperative supporting and hanging mode, better performance can be achieved in the aspect of resisting upsetting moment caused by lateral force generated by strong wind or earthquakes, the structural stability is enhanced, and compared with traditional cantilever structure construction, the structure does not need to be like a traditional cantilever structure.

The utility model discloses a socket type reinforced concrete cement pipe, which relates to the technical field of concrete cement pipe processing and comprises a protective pipe, a thermal insulation pipe fixedly connected to the inner wall of the protective pipe, a placing groove arranged at the joint of the protective pipe and the thermal insulation pipe, a reinforcing steel bar group placed in the placing groove, and a top cover arranged at the top of the protective pipe. A fastening steel ring abuts against the connecting position of the top cover and the protection pipe, a material injection opening is formed in the top of the top cover, and the material injection opening is formed in the top cover in a T-shaped mode. According to the cement pipe hoisting device, due to the arrangement of the hoisting ring connecting block, safety and stability of a cement pipe in the hoisting process can be guaranteed, and construction efficiency is improved; through cooperation of the reinforcing steel bar rings and the longitudinal reinforcing steel bars, the mechanical property of the cement pipe can be remarkably enhanced, and the bearing capacity and durability are improved; and through the arrangement of the fastening steel ring, the fastening effect of the fastening steel ring can be enhanced, the overall sealing performance and structural stability of the pipeline are improved, and the problem that connection is loosened easily due to insufficient friction force in a traditional fastening mode is solved.

The invention discloses a method for erecting an in-situ precast beam, which comprises seven steps of side slope excavation and protection, lower structure construction, profile steel pedestal construction, beam sheet in-situ prefabrication, maintenance and tension, transverse movement and beam falling and subsequent construction, the precast beam is a T beam matched with a vehicle-mounted overbridge, in-situ prefabrication is carried out on a bridge site, and off-site prefabrication and beam transportation procedures are not needed; three differentiated transverse moving beam falling schemes are designed, a section steel pedestal is of a modular detachable structure and can be repeatedly used, and a leveling cushion layer is arranged on the contact face of a precast beam and a permanent support. The construction safety risk is greatly reduced, the process is simple and convenient, the construction period is short, the construction cost is saved, the construction flexibility and adaptability are high, the erection precision is high, the structural stability is good, and the construction method is suitable for various T-beam erection projects with limited sites and particularly suitable for vehicle platform bridge projects which stretch across newly-built main line expressways and are located in remote excavation sections.

This utility model relates to the field of road and bridge construction technology, and in particular to a fixing structure for repairing road and bridge cracks. It includes a cylinder and a road surface. A crack groove is provided at the crack in the road surface for placing the cylinder. A top groove is formed above the crack groove. A vertically placed support is slidably installed inside the cylinder. A waterproof plate is fixedly connected to the top of the support after it slides through the cylinder. An inner cavity is formed at the top of the cylinder. Connecting rods are rotatably connected to both sides of a section of the support located in the inner cavity. A pull rod is rotatably connected to the end of the connecting rod away from the support. A fixing rod is provided at the end of the pull rod away from the connecting rod. This application improves construction efficiency and reduces difficulty through convenient adjustment of the fixing structure. Furthermore, the design of barbs and waterproof grooves enhances structural stability and waterproof performance. The mechanical structure under stress also prevents further cracking, ensuring the quality of the repair work in terms of construction efficiency and long-term stability of the repair effect.

The application discloses a kind of steel plate warehouse inventory structure stability evaluation and grading active intervention method, it is related to steel plate warehouse storage safety monitoring field, comprising: S1 multi-source data real-time acquisition, obtains structure deformation, material accumulation, environmental conditions and equipment operation data;S2 constructs multi-factor stability evaluation model, calculates stability score S;S3 compares S with preset threshold, and divides grade;S4 four grades are matched respectively normal control, hidden danger correction, risk early warning, emergency intervention strategy and closed loop execution;S5 uses machine learning iterative optimization model weight and grading threshold with monthly cycle;System includes data acquisition, preprocessing, stability evaluation, grade classification, grading intervention, data storage iteration and man-machine interaction module, using 5G+ wired double link transmission.The application realizes the real-time quantitative evaluation of steel plate warehouse structure stability, grading accurate intervention and self-adaptive optimization, effectively improves the level of storage safety control.

The invention relates to the technical field of three-dimensional modeling, in particular to a low-calculation-power rapid three-dimensional modeling method and system based on 3DGS, and provides the following scheme that a Gaussian field is updated in the previous period of each modeling period to serve as an initial model to execute forward rendering, rendered images are obtained, and residual information is calculated. And performing robust aggregation on the residual error by taking a preset tile as a statistical unit, constructing a projection statistical spectrum in combination with Gaussian projection contribution, performing cross-period comparison to obtain a structure change degree, and performing residual error gating to form a complexity score so as to divide a complex region and a flat region. Mapping from tiles to Gaussian objects is established according to a density scheduling state, directional splitting and encryption are carried out on a complex region, appearance and transparency are finely adjusted in a limited middle region, and absorption, combination and sparsification are carried out on a flat region, so that rapid convergence and stable modeling are realized under the condition of limited computing power; and the invalid calculation proportion is remarkably reduced while the reconstruction precision and the structural stability are kept.