99 results about "Stressed state" patented technology

The invention provides a concrete normal section reinforcement design method and system, electronic equipment and a storage medium. The method comprises the following steps: establishing a section stress model containing multi-layer reinforcement strain distribution based on plane section assumption; the stress state of the whole process of the section from axle center compression to axle center tension is simulated by setting strain proportion parameters of the strain of the outermost reinforcing steel bar on the tension side and the limit pressure strain of the concrete; aiming at a plurality of set strain state control points, calculating stress of each steel bar layer position, contribution of the stress to axial force and bending moment and contribution of the stress to a concrete compression area; and based on the section static balance condition, the optimal reinforcement area meeting the design load requirement is determined through iterative calculation, and the configuration constraint of multiple layers of steel bars is considered in the iterative calculation. The method overcomes the defects that a traditional method overestimates the effect of the pressed steel bars and ignores the strain difference of multiple layers of steel bars, and the accuracy and safety of reinforcement design of high-performance concrete structures such as nuclear islands are remarkably improved.

The utility model relates to the technical field of geotechnical engineering and railway construction, and particularly discloses a vibration reduction and deformation resistance steel sheet pile for deep foundation pit engineering close to an existing railway line, which comprises a steel sheet pile, a vertical load-bearing steel bar, a connecting component, a vibration isolation and reduction interlayer and a protective steel plate. By adopting a composite structure form of steel sheet piles, vibration isolation and reduction interlayers and vertical load-bearing steel bars, the structure reinforcing function and the vibration isolation function are organically combined, and a brand-new supporting structure system is formed; the vertical stressed steel bars are matched with the vibration isolation and reduction interlayer and the damping spring shock absorbers, the vertical stressed steel bars mainly share tensile stress to improve the stress state, the vibration isolation and reduction interlayer mainly absorbs vibration energy to weaken vibration transmission, and the comprehensive performance of the steel sheet pile is remarkably improved through the combined action of the vibration isolation and reduction interlayer and the damping spring shock absorbers; meanwhile, according to the scheme, by optimizing arrangement of the vertical load-bearing steel bars, selection of vibration isolation and reduction materials and arrangement of connecting components, the whole structure has the good reinforcing effect and vibration reduction performance, and construction convenience and economical efficiency are taken into consideration.

The invention relates to the technical field of steel structure engineering construction, in particular to a super-long independent steel column segmented locking type temporary stabilizing device and a construction method thereof, and is suitable for the overall lifting stage of a multi-layer aerial corridor. The device comprises a first locking assembly surrounding a concrete column and providing an X-direction lateral fulcrum; the second locking assembly is fixedly connected to the surface of the steel column to form a force transmission interface; and the connecting conversion assembly connects the steel column and the concrete column into a whole, so that the X-direction load of the steel column is transmitted to the concrete column in sections. The super-long steel columns are temporarily decomposed into short column stress sections with the length not larger than the designed length, and lateral displacement is remarkably restrained. The construction method comprises the steps that the device is installed at the corridor joint, pre-tightening force is synchronously applied, displacement is monitored in real time, overall dismantling is conducted after lifting is completed, and no residue exists after dismantling. The method is not pre-buried and fully recycled, super-long columns are restored to be in a short column stress state, lateral displacement is reduced, steel is saved, the construction period is shortened, green construction and appearance completeness are both considered, and the method is suitable for a large-span corridor overall lifting project.

The invention discloses a construction method for segmentally cutting and removing arch ribs of a half-through multi-connected arch bridge in a navigable water area, and belongs to the technical field of highway bridges. The method comprises the steps that a zero-stress-state cutting technology system for the H-shaped steel temporary lock catches at the vault is installed, and the H-shaped steel lock catches are used for bearing and gently transferring internal force of the section of the vault in advance before cutting; an arch foot directional collapse auxiliary device is installed, and a guide frame with a guide arc surface is adopted to guide the to-be-dismantled stand column to collapse in the preset direction; an arch foot root vertical back pressure technical system is installed, vertical pressure is applied through a back pressure device, and horizontal thrust of the arch ribs is counteracted in cooperation with the filled profile steel and the pier caps; a temporary opposite-pull device auxiliary dismantling technology system is added to the end of the installed arch rib, and a temporary opposite-pull rod and an anchoring structure for connecting the arch rib and a tie bar are arranged so as to balance structural internal force in the dismantling process. Through the synergistic effect of the four technical systems, safe arch crown cutting, arch springing stability and arch rib force system balance are achieved.

The invention provides a discrete ballastless track tension-compression fatigue damage rapid calculation method, which comprises the following steps of: uniformly measuring a complex stress state and a simple stress state through a damage energy release rate, and decomposing tension-compression effective stress by utilizing a fourth-order projection tensor, so that the tension-compression effective stress value is equivalent to a uniaxial tension-compression stress value under a uniaxial loading condition; constructing a hyperbolic function with a natural constant as a base and a damage variable as an index on the basis of the damage energy release rate and in combination with three-stage damage characteristics of high-cycle fatigue of the material; carrying out integration on fatigue loading times through tension and compression damage, and deducing to obtain a discrete transcendental differential function of the damage related to the loading times; function variables are defined, an initial value is set, an iteration format is established, the discrete transcendental differential function is solved through a numerical integration method, and a calculation result graph is drawn. The model is simplified, and the calculation efficiency is improved; a high-order tensor stress updating algorithm does not need to be constructed, redundant calculation is reduced, and the data processing efficiency and the calculation speed during parameter analysis are greatly improved.

The invention provides a method, a device, equipment and a medium for evaluating the residual life of a cableway structural component, and the method comprises the steps: carrying out the conformity judgment of a to-be-evaluated component, and determining whether the to-be-evaluated component is a cableway long-acting basic structural component or not; if the to-be-evaluated component is the cableway long-acting basic structure component, multi-stage state judgment with a logic progressive relation is sequentially carried out on the to-be-evaluated component, and the previous-stage judgment is a necessary condition for entering the next-stage judgment; and if the to-be-evaluated part passes the multi-stage state evaluation, evaluating the residual life of the to-be-evaluated part according to the surface state and the stress state of the to-be-evaluated part. By adopting the scheme, the accuracy and the reliability of the residual life estimation result of the cableway structural component are improved.

The utility model relates to the technical field of steel structure bridge joint connection, in particular to a rapid assembly type steel structure bridge joint which comprises a lower stand column, an upper stand column arranged above the lower stand column and a bridge beam perpendicular to the stand columns. The first connecting part is inserted into the second connecting part, one end of the bridge beam is inserted into the second connecting part, the upper stand column and the lower stand column are quickly connected, and a firm connecting structure can be formed by injecting concrete into the square groove. The first connecting part, the second connecting part and the bridge cross beam are tightly connected together, the structural strength of the connecting joint is improved, the durability of the joint is enhanced, the bridge can bear larger loads and more complex stress states, the supporting rod with the adjustable length is arranged on one side of the lower stand column, and the supporting rod is convenient to use. The supporting rods are used for supporting the bridge beam.

The application belongs to the technical field of bridge construction, and is a beam bridge load test method based on time history curve. The method firstly carries out static load test, and then arranges test vehicles at key parts of the test bridge surface by using a step loading mode, and measures deflection points and strain points. Then, the static load test efficiency is calculated through the bridge static load test. According to the step loading mode and the static load test efficiency, a multi-working-condition bridge model is established by using a finite element method to collect time history curves. Finally, dynamic load test is carried out, control sections of each span of the bridge are selected as test sections, and strain fluctuation amplitude, impact coefficient and the like are measured through the dynamic load test. According to the test data, the stress state of the structure under dynamic load is analyzed. The application combines static load test and dynamic load test, can reflect the working performance of the bridge structure under design load, and has high reliability.

This invention discloses a numerical simulation method for the corrosion rate of high-strength steel under marine stress environments, belonging to the field of corrosion and protection technology. The method includes the following steps: establishing a geometric model for simulation and meshing the model; setting material properties, including corrosion kinetic parameters and basic mechanical property parameters; applying boundary conditions to the geometric model to simulate the actual stress state of the high-strength steel plate; formulating a kinetic expression formula for the electrochemical reaction to describe the electrochemical behavior during corrosion; and performing a corrosion kinetic-mechanical coupling analysis to calculate the distribution of corrosion current, corrosion potential, and local corrosion rate. This invention, by constructing a multiphysics model, can accurately extrapolate and predict the dynamic corrosion rate of high-strength steel under different stresses and environmental parameters. It provides crucial theoretical basis and data support for the design, life assessment, and maintenance decisions of marine engineering structures.

The utility model relates to welding piece strength test technical field, concretely is a kind of welding piece strength test device, the fixed subassembly includes four connecting pieces, four the connecting pieces are fixedly connected in the top of fixed frame respectively, the inside of four the connecting pieces is fixedly connected with fixed bottom plate jointly, recess is set up in the inside of fixed bottom plate, four sliding grooves one are set up in the inside of fixed bottom plate. This welding piece strength test device, can guarantee that welding piece is in correct stress state in testing process, avoid the uneven partial stress, sliding or rotation etc. caused by clamping instability, to make the test result real reflection welding piece's strength performance, reduce test error, improve the reliability and repeatability of data, need not frequent adjustment clamp or reinstallation welding piece, can reduce test preparation time and the test interruption frequency caused by clamping problem, make testing process more smooth, to improve overall test efficiency.

The utility model relates to a concrete box girder bridge reinforcing structure for a large longitudinal slope girder bridge, which comprises a box girder main body and flanges, and the flanges are fixedly connected to the left side and the right side of the box girder main body. According to the concrete box girder bridge reinforcing structure for the large longitudinal slope girder bridge, by arranging the reinforcing plates, the upper end and the lower end of the inner wall of the box girder main body have high stability, then by arranging the first notches, the anchoring parts and other parts, high supporting performance can be generated between the two reinforcing plates, and the inner space of the box girder main body can be effectively supported and fixed; by arranging the auxiliary supporting plates, the box girder main body can transmit part of pressure to the reinforced steel plates on the two sides, then the pressure borne by the box girder main body is weakened, the service life of the box girder bridge is prolonged, and finally by arranging second notches, fixing anchor plates and prestressed steel bars, flanges on the two sides can be stably connected with the box girder main body; according to the design, the bearing capacity of the flange can be improved, and the stress state of the flange is improved.

This invention belongs to the field of sheet metal testing technology, and discloses a sheet metal internal angle fatigue testing device and method. The sheet metal internal angle fatigue testing device includes a testing platform, a fixing component, and a pressure applying component. The fixing component includes two blocks and corresponding sliders. The two blocks are adjustablely mounted on the testing platform along a first direction, and the two sliders are slidably mounted on the testing platform along the first direction and located between the two blocks. Both sides of the sheet metal part along the first direction are fixedly connected to the sliders. The pressure applying component is connected to the testing platform and includes a pressure head. The pressure head is used to apply pressure along a second direction to the outer side of the bending angle of the sheet metal part. This accurately simulates the movement characteristics of the sheet metal parts' sides during actual working conditions and the true stress state of the internal angle, ensuring the accuracy of the test results. It is adaptable to the testing needs of different models and specifications of sheet metal parts, and has a wide range of applications and strong versatility.

The invention discloses a dynamic simulation method for the ultrasonic welding process of multiple layers of thin plates. According to the method, simulation model combinations of different dimensions are provided, so that the problem of simulation of the mechanical property non-uniformity of the welded joint is effectively solved. The entity unit detailed model can finely present the microstructure characteristics of the welding joint, including the interface reaction area and the welding seam fusion state of each layer of plate, and the shell unit simplified model greatly improves the calculation efficiency on the premise of ensuring the engineering precision; the part impact test simulation model further combines the material failure behavior with the actual working condition. The three models support one another through a unified material failure setting system, the performance difference between a welding seam area and base metal is captured, the dynamic response rule under the impact load is reflected, and the simulation result can truly reproduce the mechanical behavior of a welding joint in the complex stress state.

The invention discloses a large-span arch bridge large-scale reduced scale model test load self-adaptive loading method and system, and belongs to the technical field of bridge engineering structure tests. The system comprises a reduced scale model test piece used for manufacturing the reduced scale model test piece according to a reduced scale proportion and rigidity equivalence principle based on a target bridge, and setting a loading point at a preset position of an arch rib; the unconstrained self-adaptive loading device consists of a lever-pulley block and is used for applying a load to the loading point and allowing the model to freely deform in an unconstrained manner in the loading process; the transverse limiting devices are arranged on the two longitudinal sides of the reduced scale model test piece and used for limiting transverse displacement of the model and preventing instability; and the test system is used for collecting displacement, strain and arch foot internal force data of the model in the test process. According to the invention, long-term stable load application and unconstrained free deformation synchronous simulation of the model can be realized, and the real stress state and failure mode of the large-span arch bridge can be accurately restored.

The invention discloses a lining construction monitoring method for an extra-large-section underground excavation station meeting TBM station crossing, and belongs to the technical field of TBM construction safety monitoring. The method comprises the steps that when a lining section is constructed, a strain sensor is pre-buried, and data are collected to obtain a time-strain curve of concrete; establishing a time-varying mechanical property prediction model based on the data of the constructed lining section; a TBM system planned station crossing moment and a corresponding new form removal lining section are obtained, and a finite element model is established to simulate TBM load movement to obtain a main tensile stress extreme value; calculating a stress compensation value of the new form stripping lining section based on the time-strain curve, and superposing the stress compensation value and the main tensile stress extreme value to obtain a predicted total stress; the TBM passage plan is decided by comparing the predicted total stress and the predicted tensile strength, real-time monitoring of the stress state of the early-age lining section, time-varying performance prediction and load coupling analysis are achieved, and the technical blank of quantitative safety evaluation of the concrete structure in TBM dynamic station crossing is filled.

The invention belongs to the field of underground engineering testing and monitoring, and discloses a pipe-rock friction force measuring device and method.The device comprises a test platform base, a pressure loading system, a jacking loading system, an acoustic emission monitoring system and the like, the triaxial stress state is simulated through the movable pressure loading system, and multi-source parameters are synchronously collected; according to the method, a time sequence prediction model PFLT and an early warning threshold value are established by calculating the mapping relation between acoustic emission characteristic parameters and the friction coefficient, and real-time monitoring and early warning of the friction state are achieved. Simulated working conditions are close to reality, data are comprehensive, jacking parameters can be adjusted in advance, the pipeline damage risk is reduced, and the method is suitable for pipe jacking engineering design and construction monitoring.

The application provides a method and device for determining a bridge closure position based on a first-stage dead load internal force distribution and a storage medium, and relates to the technical field of bridge construction. The method comprises the following steps: obtaining a candidate closure position of a target bridge; performing a first-stage dead load stress state analysis based on a pre-established full-bridge finite element model to obtain a first-stage dead load internal force state analysis result; calculating a construction convenience index, a construction period index, an adjustment measure index and other influence factor indexes according to the influence of the target bridge based on the first-stage dead load internal force state analysis result; calculating a closure index of each candidate closure position based on the construction convenience index, the construction period index, the adjustment measure index and the other influence factor indexes; and taking the candidate closure position with the minimum closure index value among all the candidate closure positions as the target closure position. The method provided by the application can quickly and effectively determine the bridge closure position.

This invention discloses a prefabrication and erection construction process for a double-track variable-width simply supported box girder at a single / double-track junction, relating to the field of construction technology. The process includes obtaining the geometric parameters and spatial constraints of the double-track variable-width simply supported box girder at the single / double-track junction; adaptively modifying the prefabrication beam formwork system and supporting fixtures based on the geometric parameters; calculating the stress state of the box girder structure and implementing prefabrication parameter control during the prefabrication stage; completing the prefabrication, tensioning, and curing of the box girder based on the calculation results; and controlling the stress state under the action of the bridge erecting machine and completing the erection of the box girder during the erection stage. This invention achieves precise prefabrication and safe erection of the double-track variable-width simply supported box girder by parametrically obtaining the box girder's geometry and track conditions, combined with adaptive formwork modification and stress calculation threshold control. It also effectively diverts asymmetrical loads during the erection stage, reducing construction risks, shortening the construction period, and improving project quality and construction safety.

The invention discloses a data processing method for a steel plate spring in a vehicle, a storage medium and electronic equipment. The method comprises the steps that current stress data of the steel plate spring are obtained, and the current stress data are used for representing the stress state of the steel plate spring at the current moment; the current stress data are input into a stress change model of the steel plate spring, stress change data of the steel plate spring at the future moment are predicted, and the stress change data are used for representing the change rule of the stress state in the process from the current moment to the future moment; based on the stress change data, a stress change evaluation strategy of the steel plate spring is determined, and the stress change evaluation strategy is used for representing a rule of evaluating the bearing stability performance of the steel plate spring to the vehicle in the stress state change process; and determining the failure mode of the steel plate spring by using a stress change evaluation strategy. The technical problem that the data processing accuracy of the steel plate spring is low is solved.

The invention discloses an in-service steel structural member stress in-situ detection method based on a structural axial force equivalent stiffness principle. The method comprises the following steps: firstly, determining a to-be-measured rod piece and a support form of the to-be-measured rod piece, and recording the deflection increment of the rod piece under load application by installing displacement measuring devices at the two ends and the middle position of the rod piece; calculating to obtain the rotational rigidity of the end part of the rod piece, and then calculating to obtain the flexural rigidity of the rod piece according to the load applied by the measuring point and the obtained displacement; and finally, based on an equation obtained by the relation between the flexural rigidity of the axial force equivalent negative rigidity and the axial force, calculating to obtain the axial force and the section stress borne by the rod piece. According to the invention, the stress state of the in-service steel structure rod member mainly based on axial force can be directly detected, and an initial state result does not need to be used for difference; the method can greatly simplify the stress state of the in-service structure and evaluate the safety of the in-service structure, and can be widely applied to stress state detection of in-service steel truss bridges, space trusses, large trusses and other members taking axial force as main rods.

One aspect of the invention relates to a setting (1) comprising an upper body (15) and a lower body (16) aligned along an axis (A) for driving the setting into a seat (8) of a piece of jewelry or timepiece (9), the upper body (15) comprising a first surface (2) to receive a component (10) to be set, the upper body (15) comprising a setting element (4) to ensure retention of said component (10), the lower body (16) comprising a second surface (6) facing forward, a deformable zone (7) being plastically deformable between the bodies (15; 16) under the effect of an axial driving force greater than a predetermined driving force, to bring the setting (1) into a stressed state in which the deformable zone (7) irreversibly deforms and / or breaks in the form of a rim of the peripheral surface (3) of the setting (1) pushed back radially towards a side wall of the seat (8), or / and a fault of the upper body (15) pushed back radially towards this side wall.

The application discloses a pile bearing state test device, which comprises a box body, a model pile for inserting into a model foundation is arranged in the box body, a sensor for monitoring the stress state of the model pile is arranged at the bottom end of the model pile, a loading device is arranged above the box body, a supporting part for supporting the loading device is arranged on the box body, a connecting part matched with the top end of the model pile is arranged at the bottom of the loading device, and a universal joint is arranged between the loading device and the connecting part. The universal joint arranged between the loading device and the connecting part can prevent the loading device from sliding laterally during the loading process, realizes the surface load loading of the model pile, and can ensure the loading under the inclined condition of the model pile. The pile bearing state test device can effectively simulate the bearing state of the pile foundation, is suitable for a wide range of applications, and is simple in structure and convenient to operate.

This invention relates to the field of testing device technology, specifically to a testing device and method for testing the bending performance of steel-concrete composite structures. The testing device for the bending performance of steel-concrete composite structures includes a base, an upper pressure member, and two support members. The specimen is placed on the two support members. The upper pressure member includes a first hydraulic cylinder, which abuts against the specimen. The support members include rollers and two adjusting members, each including a second hydraulic cylinder, a rack, and a special-shaped gear. The rack abuts against the output end of the second hydraulic cylinder, and the special-shaped gear meshes with the rack. This invention's testing device for the bending performance of steel-concrete composite structures aims to make the rotational torque applied to the rollers by deforming the specimen under the action of the first hydraulic cylinder as equal as possible to the rotational torque applied to the rollers by the second hydraulic cylinder through the rack driving the special-shaped gear, thereby reducing the interference of friction on the stress state and making the test data more accurate.

The invention discloses a variable-diameter and variable-wall-thickness drill rod for large-diameter directional drilling of a top plate of an extra-thick coal seam. The drill rod is divided into four functional sections in the axial direction, namely, a near-bit strengthening section, a deflection / stable deflection flexible section, a main body transmission section and a tail connection strengthening section. Different outer diameters and wall thicknesses are adopted for all the functional sections according to the actual stress state of the functional sections in the directional drilling process, and matching of material distribution and stress requirements is achieved. The near-bit strengthening section adopts the maximum outer diameter and the thickest wall thickness so as to bear high torque and abrasion; the deflection / stable deflection flexible section has certain flexibility on the premise of ensuring the bending fatigue strength; the wall thickness of the main body transmission section is optimized to realize light weight; and the tail connection reinforcing section improves the connection reliability through local thickening. The problems that a traditional equal-diameter equal-wall-thickness drill rod is integrally heavy, locally prone to damage, insufficient in adaptability and the like in large-diameter directional long drilling construction are solved, the overall service life of the drill rod is prolonged, and the drilling efficiency and economic benefits of the drill rod are improved.

The invention relates to the technical field of bearing performance testing, and particularly discloses a bearing testing method which is used for testing at least one to-be-tested bearing on a speed reducer. The predicted service life of a to-be-tested bearing is set, and the to-be-tested bearing is driven to operate according to a set rotating speed; the test tool applies an external load to the speed reducer and transmits the external load to the to-be-tested bearing; adjusting the magnitude and the application angle of the external load to enable the radial load of the to-be-tested bearing to be equal to the rated dynamic load; and when the failure duration of the to-be-tested bearing is greater than or equal to the predicted service life, or the to-be-tested bearing does not fail within the predicted service life duration, judging that the to-be-tested bearing is qualified. According to the invention, the radial load of the to-be-tested bearing is equal to the rated dynamic load by adjusting the external load, so that the fatigue life of the bearing is directly and quantitatively assessed, the stress state of the bearing under the actual working condition can be accurately simulated, and the problem of insufficient verification of the bearing in the prior art is effectively solved.

A NEW PROCESS FOR DESIGNING REINFORCED CONCRETE SHELL STRUCTURES The present invention relates to an approach of designing reinforced concrete shell structures. The process is summarized as follows: equilibrating the unit loads according to relevant boundary conditions, generating the load cases, creating load combinations, filtering the huge amount of combinations according to various maximum / minimum strain / stress states and obtaining the governing scenarios, conducting the non-linear design of the sections according to the governing cases obtained.

The invention relates to a sling corrosion-multi-axial fatigue life prediction method and device. The prediction method comprises the following steps: S10, acquiring key mechanical parameters of a sling under a predetermined load; s20, establishing a layered slip finite element model of the sling based on a layered slip theory, and solving the fatigue stress amplitude of each layer of steel wire of the sling; s30, the minimum fracture life and the corresponding steel wires are determined, and the accumulated damage degree of the remaining steel wires under the minimum fracture life is evaluated; s40, updating the layered slippage finite element model of the remaining steel wires, and determining the corrosion-multi-axial fatigue life of the sling; and S50, acquiring the corrosion-multi-axial fatigue life of the sling in multiple life cycles, and analyzing the probability distribution characteristics of the corrosion-multi-axial fatigue life of the sling. The performance evolution and failure process of the sling under the coupling action of the corrosion environment and the complex stress state can be simulated, and a reference basis is provided for service state evaluation and maintenance decision making of the sling.

The application relates to a method for predicting the bending performance of a large-span multi-rib concrete composite slab, which comprises the following steps: S1: constructing a space rectangular coordinate system of the large-span multi-rib concrete composite slab, and restraining the physical properties of the large-span multi-rib concrete composite slab; S2: constructing a shear lag effect displacement function of the large-span multi-rib concrete composite slab according to a shear lag control equation derived based on the minimum potential energy principle; S3: deriving a bending balance equation based on the shear lag effect displacement function and the minimum potential energy principle, and constructing a bending performance prediction model of the large-span multi-rib concrete composite slab considering the shear lag effect based on the bending balance equation. The bending moment of the large-span multi-rib concrete composite slab can be predicted through the bending performance prediction model, so that the deflection and stress state of the composite slab under the service load can be more accurately evaluated.

The present application relates to a kind of corrosion reinforced concrete column eccentric compression bearing capacity analysis method, comprising the following steps: measuring and calculating the basic parameters of eccentric compression reinforced concrete component before and after corrosion;Based on the basic parameters, the limit corrosion rate of eccentric compression concrete component is calculated, and the eccentric compression failure mode is determined;Analysis of the eccentric compression bearing capacity of the eccentric compression reinforced concrete component corresponding to different eccentric compression failure modes.Compared with the prior art, the present application is based on the stress state of the reinforcement on the side far from the axial force (i.e. far side) and the side close to the axial force (i.e. near side) in the eccentric compression column when the normal section fails, realizes the normal section bearing capacity calculation of the eccentric compression reinforced concrete component when the reinforcement on the far side and the near side is arbitrarily corroded, the highest order equation for solving is a quadratic equation, has the advantages of clear concept and simple calculation, can quickly and accurately analyze and evaluate the normal section bearing capacity of the eccentric compression reinforced concrete component.

The invention discloses a base plate partition variable stiffness leveling design method, system and device and a storage medium. The design method comprises the steps that S1, a calculation model is established; s2, arranging a nonlinear spring; s3, carrying out stiffness iterative calculation; s4, partition variable stiffness adjustment of the bottom plate is carried out; and S5, foundation rigidity compensation. According to the method, the pain point of traditional linear spring hypothesis and conservative design is solved, field in-situ plate load test data are obtained to construct a nonlinear spring model, the foundation rigidity is dynamically matched with the actual stress state, multiple times of rigidity iteration are conducted, the spring rigidity is dynamically adjusted along with sedimentation and counter force till convergence is achieved, it is ensured that the internal force and deformation calculation result is accurate, and the method is suitable for large-scale popularization and application. The rigidity of a high-deformation area is enhanced in a targeted mode and the rigidity of a low-deformation area is weakened according to deformation deviation subareas, meanwhile, a transition area is arranged to avoid sudden rigidity change, deformation is controlled, materials are saved, the area with insufficient bearing capacity is identified through counter-force verification, only foundation treatment or deep foundation design is conducted on a key area, and waste of large-area reinforcement is avoided.