70 results about "Residual deformation" patented technology

The invention relates to the technical field of production line control, and discloses an intelligent control method and system for production line mold machining. According to the method, a pressure distribution state is determined by obtaining initial cutting parameters of a cutter and surface pressure data of a mold, mold node stress distribution is calculated by utilizing a three-dimensional finite element model, and a stress concentration position is identified. And predicting a mold deformation trend through a linear regression model according to the thermal expansion coefficient and the environment temperature data. Meanwhile, the initial cutting parameters are optimized by combining a cutting parameter optimization objective function, and the objective function comprehensively considers factors of tool wear, surface quality and residual stress. And on the basis of a die deformation prediction result, a dynamic compensation algorithm is adopted to adjust supporting structure parameters and optimize cutting parameters, and finally optimal cutting parameters and a target tool path are generated. According to the method, precise coordination control over pressure distribution and mold deformation under the complex working condition is achieved, the residual deformation risk is reduced, and the mold machining precision is improved.

The invention relates to the technical field of anti-seismic performance evaluation of ECC jacketed combination columns, and particularly provides a quantitative evaluation method for anti-seismic performance indexes of an ECC jacketed combination column, which comprises the following steps of: calculating key anti-seismic performance indexes such as bearing capacity, accumulated energy dissipation, ductility coefficient and limit value of repairable interval, and combining weight analysis and importance coefficient adjustment to evaluate the anti-seismic performance indexes of the ECC jacketed combination column. A scientific and comprehensive anti-seismic performance evaluation system is established; a method for determining the damage point of the ECC jacket combination column is provided, and the damage state is accurately determined; reparability interval evaluation is particularly introduced, repair grades are divided based on residual deformation and Park-Ang damage indexes, and a basis is provided for post-earthquake maintenance decision making; the provided anti-seismic performance index evaluation index comprehensively considers different loading working conditions, and a clear engineering applicable threshold value is set, so that engineering personnel can quickly evaluate and optimally design; the method is of great significance to promotion of engineering application of the ECC jacket combination column.

The invention provides a metal powder bed additive manufacturing macrostructure residual deformation control method and system, and the method comprises the steps: 1, obtaining material equivalent inherent strain under different forming process parameters through a metal powder bed melting forming microscale numerical model, establishing a mapping relation between the forming process parameters and the equivalent inherent strain of the material through an approximate model technology; 2, the structure is partitioned, a numerical model is manufactured through a macro-scale metal powder bed additive, macro-structure residual deformation corresponding to regional inherent strain is obtained, an approximate model of partitioned material inherent strain and the maximum residual deformation of the structure is constructed, and the maximum residual deformation of the structure is obtained by combining the mapping relation between forming process parameters and the material inherent strain; the integral structure residual deformation prediction under the multi-partition process parameters is realized; and step 3, carrying out a forming process optimization design of residual deformation minimization to realize the residual deformation control of the macrostructure.

The invention relates to the technical field of bridge damping devices, in particular to a self-resetting energy dissipation damping device for a bridge anti-seismic support. Comprising a damping assembly and a steel member, and the damping assembly comprises a cover plate, a locking screw rod, an elastic piece and a core body; the two cover plates are oppositely arranged and connected through a plurality of locking screws, the two ends of each locking screw make contact with the cover plates through elastic pieces, a containing space is formed between the two cover plates, the core bodies are arranged in the containing space in pairs and are in sliding connection with the locking screws, and one end of each core body is fixedly connected with a steel member; through a graded energy dissipation mechanism and a self-resetting function, energy input by an earthquake can be effectively dissipated, structural response can be controlled, damage can be reduced, residual deformation can be inhibited, the anti-seismic adaptability and post-earthquake recovery capability of a bridge structure can be remarkably enhanced, and the bridge safety requirements under multiple earthquake magnitudes and multiple working conditions can be met.

The invention relates to the technical field of laser cutting, in particular to laser cutting equipment for pipe machining and a using method thereof.The laser cutting equipment comprises a base, a rack of a C-shaped structure is fixedly arranged on the base, and sliding grooves are formed in the upper side and the lower side of the interior of the rack. According to the laser cutting equipment for pipe machining and the using method thereof, an annular frame is pushed to compress a spring to the tail end of the stroke, at the moment, a one-way bearing enables a first gear to idle, after cutting is completed, the spring resets to drive the first gear to be engaged with a first rack, and the annular frame is driven to rotate by 180 degrees to switch a fixed mode; the follow-up pipe is reversely embedded into the inner wall of the pipe through the fixing elastic piece to be fixed, a two-way fixing mode is formed through positive and negative alternate force application of the two-way fixing switching and deformation compensation mechanism, the compatibility of equipment to different pipe diameters is expanded, more importantly, the fixing elastic piece bears reverse stress under the two working conditions, and the service life of the equipment is prolonged. Residual deformation is counteracted through periodic loads, and the fatigue rate of the elastic piece is obviously delayed.

The utility model relates to the technical field of bridge anti-seismic check blocks, in particular to a multi-angle self-adaptive collision assembly type energy dissipation check block which comprises a U-shaped plate, a front plate, an outer back plate, an inner back plate, springs, cushion blocks, energy dissipation soft steel, stiffening ribs and bolts. The front plate and the inner back plate are connected through a plurality of springs, the springs are installed between the cushion blocks, the cushion blocks are welded to the inner faces of the front plate and the inner back plate, the U-shaped plate is connected to a cover beam in an assembled mode, and the outer back plate is installed on the side, away from the cover beam, of the top of the U-shaped plate. The outer back plate and the inner back plate are connected through a plurality of pieces of energy dissipation soft steel. The whole energy consumption stop block is connected to the bent cap through the bolts, and later maintenance and replacement are facilitated. After the earthquake action is finished, the restoring force of the spring can push the main beam to reset, the post-earthquake residual deformation of the main beam is reduced, the bridge repairing difficulty is reduced, and the device has the advantages of being clear in structure, clear in stress, comprehensive in performance, economical in cost, capable of being assembled, easy to repair and the like.

A method for optimizing forming and performance of a friction stir welding head through pre-welding rolling belongs to the technical field of metal material welding processing, and comprises the following steps: before friction stir welding, a friction stir rolling welding tool is used for carrying out rolling treatment along a to-be-welded welding line path, so that a to-be-welded position is subjected to plastic deformation in advance; residual compressive stress and high-density lattice defects are introduced into the welded joint, so that residual tensile stress generated in formal welding can be effectively counteracted, residual deformation of the welded joint and the structure is reduced, and the mechanical property of the joint can be improved by promoting grain refinement of the weld joint and re-precipitation of a strengthening phase; therefore, synchronous optimization of forming and performance of the friction stir welding joint is realized. Compared with an existing welding method, the method is simple in process, high in repeatability, capable of achieving shape property common control of the large thin-wall welding structure and suitable for high-quality welding manufacturing in the fields of aerospace, rail transit, automobiles, ships and the like.

The invention belongs to the field of rock mechanical property evaluation, and particularly relates to a rock structural surface shear brittleness index obtaining method and a shear brittleness evaluation method. And carrying out a direct shear test on the rock structural surface to obtain a shear stress-displacement whole-process curve, calculating according to the shear stress-displacement whole-process curve to obtain a pre-peak brittleness parameter S1 and a post-peak brittleness parameter S2, and multiplying the pre-peak brittleness parameter S1 and the post-peak brittleness parameter S2 to obtain the shear brittleness index SI of the rock structural surface. According to the method, the shear stress rise rate in the pre-peak loading stage, the shear stress drop amplitude in the post-peak stage and the relative displacement in the residual deformation stage are comprehensively considered, the whole-process shear deformation characteristics of the rock structural surface can be comprehensively reflected, and the required parameters are easily measured through a mechanical test.

This invention relates to a kind of displacement amplification self-centering friction damper. The device uses gears to convert the axial deformation into the rotation of the friction-disc, and the friction device engages in friction at the edge of the friction-disc, then the displacement can be amplified and therefore it can reduce the frictional force and prolong the service life of friction components. At the same time, through gear transmission, the friction force provided by the friction device can increase with the increase of relative displacement, then it can provide suitable energy dissipation capability under different working conditions. Additionally, the device can automatically return to its initial state by disc-spring, and also provides self-centering capability for the structure simultaneously, advantageous in reducing residual deformation of the structure under severe earthquake. Compared with existing technologies, this invention has a better energy dissipation effect and is suitable for vibration control in engineering structures.

The utility model discloses a damper device for a wood structure building, which comprises a rhombic steel plate and SMA bars arranged on the rhombic steel plate, and square steel pipes are connected to the top and the bottom of the rhombic steel plate. According to the damper device for the wood structure building, when the wood beam rotates upwards relative to the wood column, the diamond-shaped steel plate begins to stretch and deform, the SMA bar on the inclined lower portion is subjected to tensile force to generate tensile deformation to a certain degree, after external force is removed, the SMA bar returns to drive the damper to return to the original shape, and the damper drives the beam-column joint to rotate so that the wood column and the wood beam can return to the original position; node residual deformation is reduced; when the wood beam rotates downwards relative to the wood column, the rhombic steel plate begins to extrude and deform, the SMA bar on the inclined upper portion generates tensile deformation to a certain degree under the action of tensile force, after external force is removed, the SMA bar recovers and drives the damper to return to the original shape, the damper drives the beam column joint to rotate, so that the wood column and the wood beam return to the original position, and residual deformation of the joint is reduced.

The invention discloses a damping support based on shape memory alloy and mild steel energy dissipation elements. The shock-absorbing support comprises an upper connecting plate and a lower connecting plate which are rotationally connected with each other, a plurality of groups of energy-consuming assemblies are arranged between the upper connecting plate and the lower connecting plate, each energy-consuming assembly comprises two clamping plates and two cover plates, the two clamping plates are rotationally connected to the upper connecting plate and the lower connecting plate respectively, and the rotating axes of the two clamping plates are parallel to the rotating axes of the cover plates; v-shaped protruding blocks are arranged on the inner sides of the two cover plates, and grooves matched with the protruding blocks are formed in the clamping plates. The protruding direction of the protruding block is arranged in the rotating axis direction of the upper connecting plate and the lower connecting plate. The two cover plates are connected through a reset energy consumption assembly. According to the damping support based on the shape memory alloy and the mild steel energy dissipation element and the connecting structure of the damping support, through cooperation of the V-shaped protruding blocks and the grooves in the multiple sets of energy dissipation assemblies and the synergistic effect of the reset energy dissipation assemblies, stress is effectively dispersed and energy is absorbed in an earthquake; and meanwhile, efficient energy consumption and self-resetting functions are achieved through combination of the SMA stranded wires and the soft steel energy consumption elements, residual deformation after an earthquake is remarkably reduced, and the anti-seismic performance and repairability of the contact network system are improved.

The present invention relates to a displacement amplification type self-resetting friction damper, which converts the axial deformation of the damper into the rotation of the friction disk through gear transmission. The friction device rubs on the edge of the friction disk, thereby realizing the amplification of displacement, so as to reduce the need for friction force and extend the service life of the friction parts. At the same time, through gear transmission, the friction force provided by the friction device can increase with the increase of relative displacement, and can provide appropriate energy dissipation capacity under different working conditions. In addition, the device can automatically return to the initial state through the disc spring, and provide a certain self-resetting ability for the structure, which is beneficial to reduce the residual deformation of the structure under large earthquakes. Compared with the prior art, the present invention has good energy dissipation effect and is suitable for vibration control of engineering structures; the structure is stable and reliable and is not affected by the environment; it saves materials and reduces the consumption of friction plates; it is easy to maintain without dismantling the entire device.

The application discloses a replaceable coupling beam shear wall structure design method, comprising the following steps: S1, determining an overall structure performance target; S2, determining a yield section replaceable coupling beam arrangement scheme; S3, yield section replaceable coupling beam stiffness calculation; S4, non-yield section connecting beam and pre-embedded steel strength checking; checking yield section replaceable coupling beam bending resistance or shear resistance; S5, checking yield section replaceable coupling beam stability; S6, designing a connecting mode between the yield section replaceable coupling beam and the non-yield section connecting beam; S7, setting a yield section replaceable coupling beam restoring force model and a yield displacement; S8, performing structure elastic-plastic analysis; and S9, checking structure performance. The replaceable coupling beam can deform plastically and dissipate energy under large seismic action, and the residual deformation can be controlled; the inter-story drift angle is smaller than that of a traditional structure; and the replaceable coupling beam can be replaced quickly after an earthquake by adopting detachable connection, so that the structure function can be recovered quickly and completely.

The application provides a super-high building steel structure outer frame welding sequence analysis optimization method and system, which comprises the following steps: taking H-shaped steel as a welding object, adopting an equivalent indirect action method to perform finite element analysis, equivalently taking the shrinkage of each weld as the deformation of a component in a preset geometric range caused by temperature drop, obtaining the deformation amount by a local thermal elastic-plastic method and calculating the equivalent temperature amount of each component, and applying the equivalent temperature amount to the whole structure to predict the welding shrinkage deformation; welding analysis is performed on a single-layer single-span steel frame, the influence of the sequence of two welding sections on the transverse residual deformation is analyzed, a single-sided frame is constructed, the strain around the weld is monitored in real time, and the predicted value is corrected; welding sequence analysis of the whole frame is performed, the deformation amount of each scheme is analyzed according to the welding scheme of different welding sequences, and the optimal scheme is selected. The cumulative deformation caused by the traditional sequence is avoided, and the overall stability of the structure is improved.

This application relates to the field of seismic isolation bearing design technology. Specifically, an embodiment discloses a method, device, and storage medium for obtaining the residual deformation of a seismic isolation structure. The method includes: obtaining the equivalent yield displacement of the seismic isolation layer: where is the minimum yield displacement of all seismic isolation bearings; obtaining the equivalent yield-to-weight ratio of the seismic isolation structure: , where is the pre-yield stiffness of the i-th seismic isolation bearing, is the equivalent yield force, and G is the total weight of the upper structure of the seismic isolation layer; obtaining the equivalent post-yield stiffness ratio of the seismic isolation layer: , where is the post-yield stiffness of the i-th seismic isolation bearing; obtaining the equivalent ductility coefficient of the seismic isolation layer: , where D is the maximum horizontal displacement of the seismic isolation layer; obtaining the residual deformation calculation formula of the seismic isolation structure: , , and using the residual deformation calculation formula of the seismic isolation structure to obtain the residual deformation d of the seismic isolation structure. α , where is the guarantee rate, is the exponential parameter, is the stiffness ratio after yielding of the isolation layer, is the yield displacement of the isolation layer, is the yield-weight ratio of the isolation structure, and is the ductility coefficient of the isolation layer.

The present application relates to a kind of solving method of low damping flexible beam component residual deformation under explosion load, belong to the technical field of blast-resistant design, specifically including low damping flexible beam component refers to under the action of explosion, flexible beam component damping parameter x 2 Less than plastic hardening coefficient α ;And when the length of explosion load action t i Range, flexible beam component vibration does not reach the maximum value of positive elastic vibration, after explosion load unloading, rely on inertia force reaches the maximum value of positive elastic displacement t e Time y e , after explosion load unloading, flexible beam component continues to vibrate to a certain time t m , reached the maximum value of flexible beam component total elastic-plastic displacement y m , and according to the whole process of explosion, the process is divided into elastic stage forced vibration, elastic stage free vibration and plastic stage free vibration, elastic rebound stage, plastic rebound stage, elastic vibration six stages, and then determine the residual deformation of low damping flexible beam component under explosion load.

The invention discloses a shockproof toughness design method of an energy dissipation structure rotating around the centroid of the bottom of the structure, and relates to the technical field of structural engineering.The structure comprises an upper structure, vertical tension and compression limiting supports symmetrically arranged between the upper structure and a foundation, and energy dissipation dampers arranged in the supports or at the bottoms of the supports. According to the method, after a traditional fixed foundation structure is designed, rotation and energy consumption mechanisms are introduced step by step, specifically, the rigid body displacement proportion is preset to control swing response, the rigidity of a support system is distributed in proportion, parameters of the damper are designed according to the type difference of the damper, and finally it is ensured that the performance reaches the standard through finite element analysis and time-history verification. According to the method, the combination of overall structural swing deformation and concentrated energy consumption is achieved, residual deformation is remarkably reduced, the recoverability after an earthquake is improved, and the method has the advantages of being clear in design process, wide in applicability and high in anti-seismic toughness.

The invention relates to an AI prediction control system and method for seal welding deformation of a boiler heating surface, and relates to the technical field of seal welding deformation control of the boiler heating surface, and the AI prediction control system comprises a multi-source real-time data acquisition subsystem, a central intelligent prediction and decision subsystem and an active guide execution subsystem. According to the AI predictive control system and method for seal welding deformation of the boiler heating surface, qualitative change from passive correction to active pre-control is achieved, the consistency of deformation control precision and construction quality is remarkably improved, through an AI deep learning model, the future deformation trend can be predicted in advance based on the current heat-force state within millisecond-level time, and the prediction accuracy of the seal welding deformation of the boiler heating surface is improved. And when deformation does not appear or just begins to accumulate, a subsequent welding strategy is dynamically adjusted, for example, a reverse stress field is generated by changing the welding position, active counteracting is carried out, the final residual deformation is controlled at an extremely low level through the pre-control mechanism, and the pre-control mechanism is remarkably superior to a traditional static process rule.

The invention belongs to the technical field of civil engineering structures, and discloses a self-resetting variable friction energy dissipation supporting structure with a disc spring, which comprises a disc spring outer pipe, a pull rod, a first friction outer pipe and a second friction outer pipe, two wedge-shaped inner friction rings are movably sleeved with the disc spring outer pipe, and a disc spring set is arranged between the two wedge-shaped inner friction rings; the pull rod sequentially penetrates through the first friction outer pipe, the wedge-shaped inner friction ring, the belleville spring set and the second friction outer pipe, and the end of the pull rod is connected with a second force transmission block on the inner side of the second friction outer pipe through threads so as to adjust pre-tightening force. The disc spring and the wedge-shaped friction ring are combined, dual energy management of elasticity and friction is achieved, and the performance of the buckling-restrained brace is enhanced; through the geometric design of the force transmission block and the wedge-shaped ring, the friction force of load response is realized, different earthquake intensities are dynamically adapted, the energy consumption of a major earthquake is improved, and the structural deformation is reduced; the energy storage mechanism of the disc spring ensures the automatic recovery after the earthquake, the residual deformation is obviously reduced, and the self-resetting capability of the building after the earthquake is improved.

The utility model discloses a terminal tray structure capable of preventing terminal deformation. The terminal tray structure comprises a leaf disc, a first disc hub, an inner ring piece and a tendon bar, the first disc hub is coaxially arranged on one side of the blade disc; the inner ring piece is arranged on the blade disc and located on the periphery of the first disc hub, and the outer side of the inner ring piece and the blade disc jointly define a containing space. The tendon latch is mounted on the first disk hub to enter or leave the slot. An inner ring piece is arranged on a blade disc and located on the periphery of a first disc hub, the inner ring piece is provided with an empty groove, the inner ring piece is matched with a tendon bar to be installed on the first disc hub in the mode that the tendon bar can enter or leave the empty groove, the tendon bar extends into the empty groove during material receiving, and the tendon bar leaves the empty groove after material receiving is completed; the existence of the empty groove can provide a stretching space for slight deformation caused by thermal expansion and cold contraction of the terminals, so that mutual extrusion and distortion between the terminals are effectively prevented, a large amount of deformation internal stress left on the terminals is avoided, and permanent deformation caused by mutual extrusion of the terminals is effectively prevented.

The application discloses a metal shell mouth precision rotary cutting processing method, and relates to the technical fields of lithium ion battery manufacturing process and numerical control precision machining, wherein, according to the local height deviation, the material cutting mechanics mechanism and the system inherent stiffness model are combined, a dynamic feeding compensation algorithm is run, the tensile residual deformation is eliminated, the design elevation is taken as a constraint target, the axial preset cutting depth and the feeding rate at different angle positions in the circumferential direction are calculated in real time, the customized numerical control processing instruction is generated, and the supply parameters of the lubricating medium with the preset flow are synchronously outputted. The application discards the traditional punching and laser cutting, and innovatively adopts the continuous micro rotary cutting process, the material is separated by experiencing stable shearing slip through the progressive stripping of the cutter, the processing process is stable, the tearing burrs caused by the instantaneous huge impact stress of the punching are avoided, and meanwhile, as a cold processing mode, the micro lubrication is matched.

The invention provides a super high-rise building steel structure outer frame welding sequence analysis optimization method and system, and the method comprises the steps: taking H-shaped steel as a welding object, carrying out finite element analysis through an equivalent indirect action method, enabling the contraction amount of each welding seam to be equivalent to the deformation of a component caused by cooling in a preset geometric range, and obtaining a welding sequence of the H-shaped steel; obtaining deformation through a local thermoelastic-plastic method, calculating equivalent temperature of each component, and applying the equivalent temperature to the overall structure to predict welding shrinkage deformation; a single-layer single-span steel frame is adopted for welding analysis, and the influence of the sequence of two welding sections on transverse residual deformation is analyzed; constructing a single-sided frame, monitoring the strain around the welding seam in real time, and correcting a predicted value; and welding sequence analysis is conducted on the whole frame, the deformation amount of each scheme is analyzed according to preset welding schemes of different welding sequences, and the optimal scheme is selected. Accumulated deformation caused by a traditional sequence is avoided, and the overall stability of the structure is improved.

The utility model provides a double-step self-resetting supporting device which comprises a first supporting part and a second supporting part, the first supporting part is located in the second supporting part and comprises a web and a flange, and a first anchoring plate and a second anchoring plate are fixed to the two ends of the flange respectively. The first anchoring plate and the second anchoring plate are located at the two ends of the flange respectively, the first anchoring plate and the second anchoring plate are each fixedly connected with two friction plates, the friction plates are located on the two sides of the web plate, and a reset element is fixed between the first anchoring plate and the second anchoring plate. When the earthquake intensity of the structure is low, the support slides in a friction mode so as to dissipate energy, and the earthquake response of the structure is reduced; when the earthquake intensity of the structure is large, the reset element is subjected to tensile deformation to generate additional reset force, so that the residual deformation of the support after unloading is controlled within an acceptable range, and the excessive residual deformation of the building after the earthquake is avoided.

The present application relates to a kind of solving method of high damping flexible beam component residual deformation under explosion load, belong to the technical field of blast-resistant design, specifically including high damping flexible beam component refers to under the action of explosion, flexible beam component damping parameter x 2 Greater than plastic hardening coefficient α ; And when the length of explosion load action t i Range, flexible beam component vibration does not reach the maximum value of positive elastic vibration, after explosion load unloading, rely on inertia force reaches the maximum value of positive elastic displacement t e Time y e , after explosion load unloading, flexible beam component continues to vibrate to a certain time t m , reached the maximum value of flexible beam component total elastic-plastic displacement y m , and according to the whole process of explosion, the process is divided into elastic stage forced vibration, elastic stage free vibration and plastic stage free vibration, elastic rebound stage, plastic rebound stage, elastic vibration six stages, and then determine the residual deformation of high damping flexible beam component under explosion load.

The invention relates to the technical field of steel truss bridge deck manufacturing, in particular to a ballastless track steel truss bridge deck manufacturing process. A railway bridge deck is formed by continuously matching and splicing multiple sections and is manufactured by adopting a reverse manufacturing method in a matching manner. According to the method, the raw material plates entering a factory are leveled in the manufacturing process, the flatness per square meter is not larger than 1 mm, therefore, residual deformation of the steel plates is eliminated, rolling internal stress is reduced, deformation in the manufacturing process can be reduced, and the unstressed length of the steel plates is guaranteed. Pre-camber offset is set for the standard node cross beam and the fulcrum cross beam, so that the steel beam can smoothly reach a designed line shape in a stressed mounting state; a reverse manufacturing method is adopted for matched manufacturing, and a multi-section continuous matching and splicing method is adopted for installation, so that stress and deformation in the installation process are reduced, and it is guaranteed that actual installation is conducted smoothly.

The invention belongs to the field of building structure design, and particularly relates to a building structure design method considering residual deformation of a goaf. In the upper building structure model, inputting goaf residual deformation prediction data; setting parameters of a goaf building model, including deformation design of an upper structural member and deformation design of a building foundation; judging whether the upper structure deformation design meets design requirements or not, and if yes, entering the next step; if not, adjusting the rigidity of the structural system and the component until the requirements are met; judging whether the building foundation deformation design meets design requirements or not, and if yes, entering the next step; if not, foundation reinforcement and deformation resistance measures are adopted until the requirements are met; designing internal force of an upper building structure; reinforcement design is carried out; and generating a final upper building model.

The utility model relates to the technical field of column beam processing, and discloses a straightening device for a steel structure column beam, which comprises a working table, a base plate is fixedly connected to the top of the working table, a dismounting mechanism is arranged at the top of the base plate, vertical rods are fixedly connected to the top of the base plate, and a bearing plate is slidably connected between the vertical rods. A transmission mechanism is arranged at the top of the workbench; the transmission mechanism comprises a supporting frame, the supporting frame is fixedly connected to the top of the workbench, a rotating shaft is rotationally connected into the supporting frame, and a first straightening wheel is fixedly connected to one side of the rotating shaft. According to the utility model, the motor is started to drive the rotating shaft to rotate, so that the bent pipe moves forwards under the action of friction force, and the bent pipe passes through the two groups of second straightening wheels which are arranged in the horizontal and vertical directions, so that the problem that residual deformation of a certain degree still exists after part of a column beam is straightened due to the adoption of a single straightening mechanism is solved; and the straightening effect can be better improved.

The invention relates to the technical field of shock insulation support design, and particularly discloses a residual deformation obtaining method and device of a shock insulation structure and a storage medium. The method comprises the steps that equivalent yield displacement of a shock insulation layer is obtained, and the equivalent yield displacement is the minimum value of yield displacement of all shock insulation supports; the equivalent yield-to-weight ratio of the seismic isolation structure is obtained, the equivalent yield-to-weight ratio is the pre-yield rigidity of the i seismic isolation support and is equivalent yield force, and G is the total gravity of the upper structure of the seismic isolation layer; the equivalent post-yield rigidity ratio of the seismic isolation layer is obtained, wherein the equivalent post-yield rigidity ratio is the post-yield rigidity of the i seismic isolation support; the equivalent ductility coefficient of the shock insulation layer is obtained, wherein D is the maximum horizontal displacement of the shock insulation layer; and obtaining a residual deformation calculation formula of the seismic isolation structure: obtaining residual deformation d alpha of the seismic isolation structure by utilizing the residual deformation calculation formula of the seismic isolation structure, wherein the residual deformation d alpha is the guarantee rate, the index parameter, the stiffness ratio after yield of the seismic isolation layer, the yield displacement of the seismic isolation layer, the bending weight ratio of the seismic isolation structure and the ductility coefficient of the seismic isolation layer.

The invention discloses a staged composite energy dissipation and shock absorption device capable of effectively reducing harmful deformation. The high-strength friction plate is composed of I-shaped steel, a rectangular friction plate, a sawtooth-shaped metal strip, a small gear, a large gear, a follow-up gear, a metal disc, a metal ball, a high-strength metal spring, T-shaped steel, a limiting baffle, a U-shaped high-strength metal plate, a low-yield-point metal cylinder, a high-strength metal cylinder, an arc-shaped friction plate, a round friction plate and the like. Under the action of an earthquake, the rectangular friction plates, the circular friction plates and the arc-shaped friction plates can dissipate energy through friction, the low-yield-point metal cylinders can dissipate energy through buckling, meanwhile, through the amplification effect of the gears, small translational motion of the structure can be converted into large rotation of the follow-up gears, and metal balls in the metal discs are driven to exert collision energy dissipation; therefore, harmful deformation of the structure is effectively reduced. Earthquake energy is dissipated through collision and buckling. In addition, the purpose of self-resetting can be achieved through the high-strength metal springs, and therefore post-earthquake residual deformation of the structure is reduced.

To provide a damping device for suppressing the occurrence of residual deformation in a structure.SOLUTION: The damping device includes a piston, a cylinder slidably storing the piston and having a first chamber and a second chamber which are filled with fluid, the first chamber being located on one side in the sliding direction of the piston, the second chamber being located on the other side in the sliding direction, a first flow path communicating the first chamber and the second chamber with each other and having a first flow path resistance, a second flow path as a different flow path from the first flow path, communicating the first chamber and the second chamber with each other, and having a second flow path resistance smaller than the first flow path resistance, and a changeover part for changing over the possibility or not of passing the fluid in the second flow path in one or both of a right direction as a direction from the first chamber side to the second chamber side and a left direction as a direction from the second chamber side to the first chamber side, on the basis of a relative position of the piston to the cylinder.SELECTED DRAWING: Figure 2