413 results about "Internal forces" patented technology

The invention discloses a cement stabilized macadam mechanical property analysis method based on maximum aggregate nominal particle size, and relates to the technical field of cement stabilized macadam mechanical property analysis, the method comprises the following steps: preparing skeleton dense type cement stabilized macadam test pieces with different nominal maximum particle sizes; carrying out a macroscopic mechanical test to obtain a stress-strain curve and a crushing value; establishing a three-dimensional discrete element numerical model corresponding to the test piece, performing uniaxial compression simulation, and ensuring the reliability through model verification; and based on the verified model, quantitatively analyzing the contact force distribution, the contact quantity characteristic and the microcrack evolution law from the microscopic level. According to the analysis method disclosed by the invention, a mechanism that the nominal maximum particle size improves the macroscopic performance of the material by regulating and controlling an internal force chain network and inhibiting damage accumulation is disclosed through a macro-micro combination means, and a scientific micro-mechanical basis and a quantitative analysis tool are provided for grading optimization and high-performance design of the cement stabilized macadam base.

The invention discloses a digital assembling method and system for a steel truss girder, and the method comprises the steps: carrying out the scanning measurement of a to-be-hoisted steel member through multi-source measurement equipment, and obtaining three-dimensional point cloud data and feature point coordinates; and fusing the data through a registration algorithm, and constructing a component digital model. Acquiring an environment temperature, a component temperature and a supporting state during scanning; on the basis of the information, temperature deformation and self-weight deformation correction is carried out on the model, and a model for assembling is obtained; geometric information is extracted and compared with a design value, and a deviation table and modification suggestions are generated. Dynamically and virtually assembling the corrected model according to an actual hoisting sequence; and simulating stay cable tensioning in a preset stage, and calculating the internal force and deformation of the structure. After virtual hoisting, three-dimensional coordinates of a non-assembly end are calculated in real time, and comparison and guidance are carried out; and actually measuring the three-dimensional coordinates and the physical postures of the hoisted rod pieces for subsequent virtual assembly of the rod pieces. According to the method, the construction quality and efficiency are improved.

The invention belongs to the technical field of robot cooperative control, and particularly relates to a distributed self-adaptive control method and system for cooperation of multiple mechanical arms, and the method comprises the steps: decoupling a pure internal force vector from the data of a six-dimensional force sensor at the tail end through pre-identified kinetic parameters; calculating a cooperative confrontation index according to the pure internal force vector and the relative position vector, calculating a self-adaptive internal force penalty weight through nonlinear mapping based on the cooperative confrontation index, establishing a state-space equation of the system based on a double-integral model, introducing an equivalent environment stiffness matrix, mapping a prediction error vector in a prediction time domain into a prediction internal force vector, and obtaining a prediction internal force vector; and a cost function containing the product of the self-adaptive internal force penalty weight and the predicted internal force vector is constructed, an optimal control increment sequence is obtained by minimizing the cost function, and a speed instruction is updated to drive the mechanical arm to move. According to the method, the robustness and the execution stability of the system are effectively improved, and the cooperation safety is guaranteed.

This invention discloses a method for calculating the vibration response of a delaminated composite laminate, belonging to the field of structural defect calculation and analysis. The method includes: dividing the composite laminate with delamination defects into delaminated and intact regions based on the damage condition; decoupling the delaminated regions dynamically; describing the vibration characteristics of each component in both the delaminated and intact regions using elastic waves based on elastic wave propagation theory, and establishing vibration state vector expressions for each region; determining the compatibility relationship based on the displacement continuity and internal force equilibrium conditions at the coupling point between the delaminated and intact regions, and establishing structural dynamic equilibrium equations in wave space based on the boundary conditions of the composite laminate; solving the structural dynamic equilibrium equations to obtain the amplitudes of elastic waves of each order; and calculating the vibration response of each region of the composite laminate based on elastic wave theory and amplitude calculation. This invention solves the problem of low computational efficiency in existing methods.

The embodiment of the invention provides a robot, an operation method and device of the robot, a storage medium and a program product. The method comprises the steps that sensing force data of a mechanical arm is received; the external force and the internal force are distributed based on the sensing force data of each mechanical arm in the at least two mechanical arms, so that the corresponding sensing external force and sensing internal force of each mechanical arm are determined; based on the sensing external force and the sensing internal force corresponding to each mechanical arm, the expected external force and the expected internal force of the target object and the expected position of the target object, calculating the force and the position so as to determine the expected position of each mechanical arm; and according to the expected position of each mechanical arm, inverse kinematics solution based on whole-body control is carried out on the robot, so that the joint positions of each mechanical arm and each joint in the waist are determined, and each mechanical arm is controlled to operate the target object based on the joint positions. According to the embodiment of the invention, a multi-arm force control framework based on whole-body control is constructed, the force control effect is good, and the operation stability of the robot can be improved.

The invention discloses a cooperative control method for stay cable force and main beam line shape of an extradosed cable-stayed bridge. The cooperative control method comprises the steps that cable force data, main beam line shape data and main beam section internal force monitoring data in the construction stage are collected; based on a preset cable force adjustment judgment criterion, whether cable force adjustment needs to be started or not is judged; when triggering conditions are met, a geometric nonlinear analysis model considering cable-beam-tower cooperative deformation is established, and a cable force-main beam line shape sensitivity influence matrix is generated; screening K stay cables as key adjustment objects by adopting an influence matrix column vector L2 norm sorting method, and performing global optimization based on a simulated annealing algorithm to obtain an optimal displacement mean square error and an optimal cable force adjustment amount; and according to the key adjustment object and the cable force adjustment amount, multi-cable synchronous grading tensioning work is carried out. The invention provides a systematic and intelligent solution for the construction control of the extradosed cable-stayed bridge, and has remarkable economic benefits and social benefits.

The invention discloses a foundation pit supporting structure deformation and internal force calculation method. In the calculation method, an out-pit constraint stiffness matrix is introduced as a calculation factor, and a stiffness coefficient is iteratively calculated; the calculation method comprises the following steps: S1, constructing a foundation pit supporting structure calculation model; s2, a displacement-load total balance equation of the supporting structure under the undetermined supporting working condition of the foundation pit is determined; s3, a servo support is installed, prestress is loaded, a constraint stiffness matrix is introduced, a stiffness coefficient is calculated in an iterative mode, a displacement-load total balance equation of the supporting structure is established step by step, and the deformation condition of the supporting structure is analyzed and calculated; s4-5, the steps S2 to S3 are repeated until installation of all servo supports and prestress loading are completed, and displacement and internal force of the supporting structure are calculated; and S6, the foundation pit continues to be excavated to the pit bottom, deformation and internal force under all working conditions are calculated, and regulation and control calculation can be conducted in the process. By means of the calculation method, accurate calculation of deformation and internal force of the foundation pit supporting structure under the servo supporting effect can be achieved.

The invention provides a boundary force control method and device based on gravitational equilibrium, equipment and a medium, and relates to the technical field of medical instruments. The method comprises the steps that current position information of a joint in a mechanical arm of a master console is obtained, and whether the joint enters a preset limiting buffer area or not is judged based on the information; and if so, dynamically generating a boundary force for preventing the joint from moving towards the mechanical hard limit based on the current position information and the gravitational equilibrium force of the joint. The boundary force is dynamically generated based on the current position information by setting the limiting buffer area room and taking the gravity balance force as the basis, it is ensured that generation of the boundary force is naturally matched with the joint load, and the reliability problem caused by parameter mismatching is reduced; meanwhile, as the boundary force directly derives from internal force adjustment, when the joint retreats from the limiting buffer area, the impedance force can be smoothly converged along with the position change, the residual interference force of traditional control is effectively eliminated, and therefore the reliability of preventing the joint from colliding with the hard limiting area is remarkably improved.

The invention discloses a composite beam plastic flexural capacity correction calculation method considering interface slippage. The method is suitable for a hogging moment area of a steel-concrete composite beam reinforced by an external prestress carbon fiber reinforced composite material rib. The method comprises the following steps: firstly, determining basic static boundary parameters and a shear connector constitutive model; in the iterative calculation, solving a temporary bearing capacity by utilizing an axial force and moment balance equation, and calculating interface slippage along the beam length and a deformation loss item at the support based on internal force distribution; then determining a rigidity degradation coefficient according to the average slip amount, and dynamically reducing the static yield bending moment to reconstruct the plastic hinge length; and finally, constructing a corrected deformation coordination equation, deducting a deformation loss item in geometric deformation calculation to obtain the real elongation of the in-vitro CFRP rib, and updating a stress parameter until a result is converged. According to the method, by introducing a deformation loss item and a rigidity degradation mechanism, deviation caused by traditional rigid connection assumption is corrected, and accurate prediction of the ultimate bearing capacity is achieved.

The invention provides a long-term deformation prediction method and system for a large-span rigid frame bridge, and relates to the technical field of bridge deformation prediction. The method aims at solving the problems that in the prior art, a prediction method insufficiently considers the coupling effect of geometric nonlinearity and the concrete shrinkage and creep effect and lacks the dynamic response capacity to damage events in the operation period, and consequently the deviation between a prediction result and the reality is large. According to the method, synchronous coupling analysis of the two effects is realized by establishing a space finite element model and constructing a structure balance equation which simultaneously considers the geometric nonlinearity and the shrinkage and creep effect; through reference simulation and damage event identification based on a probability distribution model, dynamic damage correction and simulation restart are carried out on the model in combination with monitoring data, a closed-loop prediction mechanism for identification, correction and restart is constructed, the precision and accuracy of long-term deformation and internal force prediction are effectively improved, and the adaptability in a complex scene is improved.

The invention discloses a hinged assembly type anchor cable frame beam internal force deformation analysis method, and relates to the technical field of slope supporting structure internal force deformation analys.The hinged assembly type anchor cable frame beam structure is divided into a plurality of supporting beams and a plurality of connecting beams, and according to static balance conditions and deformation coordination conditions of cross joints and hinge joints, the deformation of the cross joints and the hinge joints is optimized; constructing and solving a linear equation set on the basis of a Winkler foundation model to obtain concentrated force and beam end shearing force of each strut beam acting on a cross node and beam end shearing force of each connecting beam, and then performing internal force deformation analysis on each section of beam body on the basis of the Winkler foundation model; according to the method, static balance conditions and deformation coordination conditions at the cross nodes and the hinge points are considered, so that the calculation precision is improved, deformation conditions and continuity conditions increased due to the existence of the hinge points in the structure are reduced, the structural analysis difficulty is simplified, and structural calculation is facilitated.

The invention belongs to the technical field of robot teleoperation and haptic interaction, and provides a multi-mode force feedback control method and system for nuclear facility robot operation, and the method comprises the steps: collecting the state information of a master arm and a slave arm in real time, and dynamically scheduling a haptic calculation strategy according to a task state; a fast estimation strategy is enabled in the fast transit mode. Further, real environment interaction force is obtained based on dynamic model compensation and net interaction force extraction; combining the dynamically selected multi-mode force feedback parameters, and synthesizing and outputting a touch instruction to the main arm. Meanwhile, admittance correction and feed-forward compensation are carried out on a slave arm motion instruction through net interaction force and dynamic internal force, synchronous output is carried out after safety optimization, and the slave arm is controlled to move. The problems of poor task adaptability, force sense distortion and insufficient safety in nuclear facility teleoperation are solved, and intelligent, high-fidelity and safe robot teleoperation is achieved.

The application relates to a mechanical temperature self-adaptive pier beam longitudinal constraint structure, which comprises a pier, a main beam arranged above the pier, an auxiliary beam installed on the top of the pier, the auxiliary beam being capable of being elongated or shortened under the action of system temperature and being located between the pier and the main beam, a displacement lever, one end of the displacement lever being hinged to the auxiliary beam through a first rotating shaft, the other end of the displacement lever being hinged to the main beam through a second rotating shaft, and the part of the displacement lever between the first rotating shaft and the second rotating shaft being hinged to the pier through a third rotating shaft. Under the action of system temperature, the main beam and the auxiliary beam are respectively elongated or shortened, and the displacement lever only rotates synchronously, so that the temperature internal force of the main beam and the pier frame structure is released. Under the action of other loads, the main beam and the pier are connected through the auxiliary beam and the displacement lever, and when the main beam needs to be relatively displaced, the auxiliary beam and the displacement lever can constrain the horizontal deformation of the main beam and the pier, so that the main beam and the pier form a frame structure to jointly bear loads.

The application discloses a random stress spectrum acquisition method of a flange bolt, and comprises the following steps: installing a strain module on a fan tower drum; the strain module collects information and feeds back to a dynamic strain collector to obtain a plurality of pairs of dynamic strain data; the dynamic strain data is converted into stress, and a plurality of surface stresses are obtained through difference calculation; a finite element model is established to obtain a fan tower drum model, and a grid unit is divided; a stress value and angle relationship equation is calculated through the surface stress, and is applied to the fan tower drum model, and then simulation analysis is carried out; according to one simulation analysis result, a flange bolt cross-section internal force is obtained in combination with a section method principle; there is a linear relationship between the simulation analysis result and the flange bolt cross-section internal force, and a cross-section stress linear relationship formula is obtained; the cross-section stress linear relationship formula and a pre-tightening stress of the fan tower drum are combined to obtain a random stress spectrum. The application solves the problems that a large number of sensors are needed and the flange bolt needs to be removed when the sensors are damaged.

This invention discloses a bistable flexible gripper with a fin effect, belonging to the field of flexible robot grasping technology. The gripper comprises a bistable core mechanism, fin-effect flexible fingers, and a rigid support, forming a rigid-flexible hybrid structure. The first and second links of the bistable core mechanism are hinged by a pin. A drive rod with a through hole passes through the pin to achieve hinged engagement. The drive rod has a driving end and a passive end facing away from each other. The bistable core mechanism contains a variable number of elastic rings. Applying an axial active external force to the driving end or passive pressure from the object contacting the passive end can trigger a sudden bistable switching of the bistable core mechanism, driving the fin-effect flexible fingers to complete opening and closing movements. When grasping an object, the internal force of the bistable structure maintains the adaptive deformation of the fin-effect flexible fingers after contact with the object. The entire grasping deformation process is a purely mechanical action, requiring no continuous external energy input or manual intervention.

A kind of quick test device of tunnel frost heaving damage characteristics, including device box, external freezing system, internal freezing system, tunnel segment and position adjusting system, the external freezing system is located in device box and is tangent with four faces of device box, the tunnel segment is located in external freezing system, the soil body between external freezing system and tunnel segment is filled, the position adjusting system is located in the front and rear ends of device box, the internal freezing system is located in tunnel segment, the internal freezing system is connected with the position adjusting system, the soil body between tunnel segment and internal freezing system is filled, and soil pressure gauge, displacement meter and moisture content probe head are arranged in soil body area.A kind of quick test method of tunnel frost heaving damage characteristics is provided.The present application can quickly test the adverse effects of point-like uneven frost heaving on internal force and deformation of tunnel, and is simple, convenient, low in cost and short in time.

The utility model discloses a multi-proportion multi-output-port steel cable driving mechanism and a fitness device, and belongs to the technical field of fitness equipment. A multi-proportion multi-output-port steel cable driving mechanism comprises a supporting frame, a balance weight seat is slidably connected to the supporting frame, a movable pulley A is fixedly connected to the upper portion of the balance weight seat, a first steel cable is arranged on the supporting frame, the two ends of the first steel cable are fixedly connected with limiting pieces, and the end of the first steel cable is limited by the supporting frame through the limiting pieces. The first steel rope bypasses the lower surface of the movable pulley A; a second steel cable is arranged on the supporting frame, the fixed end of the second steel cable is connected with a movable pulley B, and a fixed pulley block A is arranged between the movable pulley B and the movable pulley A. The first steel cable bypasses the lower surface of the movable pulley A and then bypasses the upper surface of the fixed pulley block A and the lower surface of the movable pulley B. By arranging the second steel cable and the third steel cable, when the free ends of the second steel cable and the third steel cable are pulled, the internal force of the first steel cable can be changed, and the balance weight seat is pulled upwards.

The application provides a chain calculation method of a suspension type steel structure support system based on elastic stability theory, and belongs to the field of foundation pit support, and comprises the following steps: a mechanical calculation model is established, the stiffness of the first layer truss and the suspension component is synthesized into equivalent stiffness according to a series coupling relationship, and the support effect of the upper structure on the support component is equivalent to an elastic support; based on the mechanical model, a deformation coordination equation is established by using the force method principle, a flexibility matrix is constructed, and the second order effect caused by the axial force and the rotation and translation coupling effect are considered; the last support component is taken as a starting point, each support component is sequentially solved from bottom to top, the support reaction force of the current support component at the elastic support is taken as an equivalent external load and is applied to the corresponding elastic support of the adjacent upper support component, and the internal force and deformation distribution of the whole suspension type steel structure support system are obtained by combining the deformation coordination equations of each support component. The method avoids the problem of large calculation workload of the finite element method.

The application provides a reinforced concrete structure design method, an electronic device and a medium. The method comprises the following steps: calculating the axial force ultimate bearing capacity and the bending moment ultimate bearing capacity of a characteristic point according to basic parameters of a current reinforced concrete structure, and establishing a functional relationship between the axial force ultimate bearing capacity and the bending moment ultimate bearing capacity of a characteristic curve; constructing a limit bearing capacity envelope; if the internal force calculation values of all sections of the current reinforced concrete structure are located in the limit bearing capacity envelope, the bearing capacity of the current reinforced concrete structure meets the requirements, otherwise, the basic parameters of the current reinforced concrete structure are adjusted until the internal force calculation values of all sections of the reinforced concrete structure are located in the limit bearing capacity envelope. The application can simultaneously perform the reinforcement calculation and the bearing capacity review of multiple sections based on the structure bearing capacity envelope, and improves the design efficiency and quality of the reinforced concrete structure.

The invention provides a standardized variable-cross-section steel pipe pile enclosure structure and a construction method thereof.A plurality of variable-cross-section steel pipe enclosure piles are adopted, the adjacent variable-cross-section steel pipe enclosure piles are connected through water stop lock catches to form a steel enclosure wall with soil retaining and water stop functions, and each variable-cross-section steel pipe enclosure pile comprises a large-cross-section steel pipe section and a small-cross-section steel pipe section; the large-section steel pipe section is arranged above the small-section steel pipe section, the large-section steel pipe section is coaxially and detachably connected with the small-section steel pipe section, and the outer diameter of the large-section steel pipe section is larger than that of the small-section steel pipe section. The change of the size of the longitudinal section of the variable-section steel pipe fender post is matched with the form of the change of the internal force of the foundation pit support structure along the longitudinal direction. Due to the fact that the variable cross-section form conforms to the form that the internal force of the foundation pit support structure changes in the longitudinal direction, the problems that a conventional uniform-cross-section steel pipe support pile does not consider the support internal force and the displacement distribution form, safety is high, and economical efficiency is insufficient can be solved.

The embodiment of the present application provides a bending shear type eccentrically braced energy dissipation beam and an eccentrically braced member, the bending shear type eccentrically braced energy dissipation beam comprises a first beam segment, a second beam segment and a third beam segment sequentially connected along a first direction, when shear plastic deformation strengthening of an energy dissipation beam web of the second beam segment and a shear shear force internal force reach mu times of full plastic shear bearing capacity, the first beam segment and the third beam segment reach full plastic bending bearing capacity; or when plastic deformation strengthening of an energy dissipation beam first flange and an energy dissipation beam second flange of the first beam segment and the third beam segment and an energy dissipation beam first flange and an energy dissipation beam second flange of the third beam segment and a bending bending moment internal force reach mu times of full plastic bending bearing capacity, the energy dissipation beam web of the second beam segment reaches full plastic shear bearing capacity; wherein mu is a constant with a value range of 1.1-1.25. The bending shear type eccentrically braced energy dissipation beam of the embodiment of the present application has better seismic performance.

The invention discloses a method for measuring a damping coefficient of a vehicle damper based on inertial sensing and visual tracking. The method comprises the following steps: S10, acquiring geometric quantities and inherent characteristics of a vehicle; angular velocities and angular accelerations generated when the vehicle moves in all directions are obtained; s20, calculating the vertical load of each suspension according to the data obtained in the step S10; s30, obtaining the internal force of a suspension spring damping model according to the suspension vertical load, the spring mass, the inherent geometrical relationship and the spring stiffness coefficient; and S40, judging whether the data volume is sufficient or not, if so, outputting a damper damping characteristic graph, and if not, returning to the step S10. The method can directly reflect the direct relation between the performance of the shock absorber and the motion characteristics of the vehicle.

The present application relates to the technical field of data processing, in particular to a kind of short pile foundation deformation analysis method under oblique anchor elastic theory and deformation coordination condition, including according to short pile and anchor displacement deformation coordination condition, the displacement component of short pile at anchor displacement direction in pile-anchor node is equal to anchor displacement amount, displacement balance equation is established by displacement deformation coordination principle;Based on displacement balance equation, according to the analytical analysis method of elastic deformation of uplift single pile, the elastic deformation calculation method of oblique anchor short pile foundation is simplified, and simplified equation is obtained;Based on simplified equation, considering the boundary condition of oblique anchor short pile foundation, the whole foundation is divided into three parts, the internal force and displacement of upper half pile body and the internal force and displacement of lower half pile body are calculated, and the solving result is obtained;Based on the solving result, the design calculation of oblique anchor short pile uplift ultimate bearing capacity is completed, and foundation deformation analysis is carried out, and analysis result is obtained, the problem of no foundation deformation analysis of oblique anchor short pile is solved.

This invention discloses a method for calculating the vibration response of a delaminated composite laminate, belonging to the field of structural defect calculation and analysis. The method includes: dividing the composite laminate with delamination defects into delaminated and intact regions based on the damage condition; decoupling the delaminated regions dynamically; describing the vibration characteristics of each component in both the delaminated and intact regions using elastic waves based on elastic wave propagation theory, and establishing vibration state vector expressions for each region; determining the compatibility relationship based on the displacement continuity and internal force equilibrium conditions at the coupling point between the delaminated and intact regions, and establishing structural dynamic equilibrium equations in wave space based on the boundary conditions of the composite laminate; solving the structural dynamic equilibrium equations to obtain the amplitudes of elastic waves of each order; and calculating the vibration response of each region of the composite laminate based on elastic wave theory and amplitude calculation. This invention solves the problem of low computational efficiency in existing methods.

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 discloses a method and device for determining an anchoring type lock chamber structure scheme and electronic equipment, and relates to the field of shipping sluice design, and the method comprises the steps: determining a plurality of working conditions, load combinations and a plurality of calculation parameters of a lock chamber structure based on the basic scale of the lock chamber structure, and determining the scheme of the anchoring type lock chamber structure based on the plurality of working conditions, the load combinations and the plurality of calculation parameters; calculating the structural internal force of the lock chamber wall and the bottom plate under each working condition, checking the reinforcement amount corresponding to each working condition, arranging cable-stayed anchor piles at the lower parts of the lock chamber wall and the filling crest elevation, and arranging anchoring piles at the middle part and the lower part of the lock chamber bottom plate; and outputting an anchoring type lock chamber structure scheme based on an anchoring pile setting strategy, the structure internal force of the lock chamber wall and the bottom plate under each working condition, and the reinforcement quantity under the bearing capacity limit state and the normal use limit state under each working condition. The technical problems that in the prior art, an integral lock chamber structure resists the loads by increasing the thickness of a lock chamber wall, the engineering construction difficulty is large, and the engineering cost is obviously increased are solved.

The application provides a method and system for obtaining internal force of a pile-slab structure, comprising: decomposing a pile-slab structure to be obtained into a transverse two-dimensional frame structure and a longitudinal two-dimensional frame structure; establishing a finite element model of the transverse two-dimensional frame structure; applying a ZK uniform live load of a subgrade at the pile-slab structure to be obtained to the transverse two-dimensional frame structure, and obtaining pile top axial forces N i of piles in the pile-slab structure to be obtained through the finite element model; obtaining a load transverse distribution coefficient of the pile-slab structure to be obtained according to the pile top axial forces according to a formula; and obtaining structural internal force of the pile-slab structure to be obtained according to the load transverse distribution coefficient. The proportion of train live load borne by the longitudinal two-dimensional frame structure is explicitly calculated, and the accuracy of the calculation result is ensured.

The application discloses a kind of conversion thick plate design methods, it is related to building engineering technical field, to improve that concrete can be based on in multiaxial compression state compression strength and shear bearing capacity, with shear span ratio as reference index, conversion thick plate section punching, shear checking method is improved;Improved slab strip division method and the method for calculating internal force considering two-way bending moment and torsional moment combination effect is used.Compared with conventional technology, the application fully taps the potential of shear bearing capacity improvement of concrete in multiaxial compression state, realizes the optimization of conversion plate thickness, and the thickness of conversion plate can be optimized by 50% under extreme conditions;The slab strip division of the application is clearer, more reasonable, and the design result is safer with deformation control and reinforcement structure requirements.

The invention relates to the technical field of floor slab construction equipment, in particular to ultrahigh reinforced concrete floor slab construction equipment and a construction method thereof. According to the technical scheme, the tension detection device comprises a plurality of stand columns and further comprises a detection rod which is installed between every two adjacent stand columns and used for detecting tension between every two adjacent stand columns, each detection rod comprises pull rods fixedly installed on the two corresponding stand columns, and a tension detection component is fixedly installed between the two pull rods. The tension detection component comprises a hydraulic cylinder fixedly connected with one pull rod, a piston is slidably and hermetically connected in the hydraulic cylinder, a connecting rod is fixedly mounted on the piston and fixedly connected with the other pull rod, and pressure gauges are fixedly mounted at two ends of the hydraulic cylinder. According to the invention, the hydraulic detection rod and the bidirectional pressure gauge are integrated, so that high-sensitivity detection of tension between the adjacent columns and accurate judgment of the settlement direction are realized, and the risk of internal force redistribution caused by wrong adjustment due to misjudgment of the settlement columns is fundamentally avoided.

The application discloses a container ship monitoring point selection method and system considering hydroelastic load, and the method comprises the following steps: determining a wave frequency range and a loading working condition range to be analyzed to form a plurality of working condition combinations; a finite element software is used to establish a container ship finite element model comprising a plurality of units; hydroelastic displacement is combined to calculate the hydroelastic load of each unit corresponding to each working condition combination; the hydroelastic load is applied to the model for quasi-static analysis to obtain the first normal stress of each unit under each working condition combination; the internal force of each section is calculated, and then the normal stress of each unit corresponding to each section is calculated to obtain the second normal stress of each unit under each working condition combination; based on the first and second normal stresses, the unit set corresponding to each working condition combination which satisfies the overall strain dominance is calculated, and the intersection of all sets is calculated as a candidate monitoring point; according to the steel sea-going ship classification regulation and the structural characteristics of the container ship, the monitoring point which can be arranged and satisfies the actual engineering operability is selected from the candidate monitoring point.