178 results about "Civil/structural engineers" patented technology

The invention provides a structural engineering bearing capacity field detection method, and belongs to the technical field of structural engineering detection.The structural engineering bearing capacity field detection method comprises the steps that a multi-axial acceleration sensor and a strain gauge array are installed on the surface of a to-be-detected structural member, and an intelligent loading device is adopted to apply incremental loads; a mobile data acquisition terminal is utilized to acquire vibration response data and strain response data in real time, modal parameters are extracted based on a frequency domain analysis method to establish a load-modal parameter relation curve, the bearing capacity of a component is analyzed and calculated, a graph theory shortest path algorithm is adopted to optimize load transmission path analysis, and the load transmission path analysis is optimized. The bearing performance of the component is accurately evaluated through the structural response prediction model based on the Transform architecture, the technical integration of multi-dimensional detection data fusion, intelligent loading control, quantitative bearing capacity evaluation and accurate performance prediction is realized, and the technical problem of insufficient detection precision of the bearing capacity of the structural component is solved.

The invention belongs to the field of structural engineering, and particularly relates to a concrete compressive strength calculation method considering a strain rate effect and a size effect. The concrete compressive strength formula considering the size effect and the strain rate effect at the same time is deduced from the size effect formula and the strain rate effect formula of the concrete compressive strength. The formula comprises a constant term, a strain rate effect term, a size effect term and an interaction term. The constant item reflects the static strength of the concrete cubic test piece, the strain rate effect item reflects the strength improvement caused by strain rate increase, the size effect item reflects the strength reduction effect caused by test piece size increase, and the interaction item reflects the strain rate effect increase caused by the size increase and the size effect reduction caused by the strain rate increase. And finally, fitting all test data by adopting a multiple regression method to obtain various parameters of the concrete compressive strength. The formula fitting effect is good, the regression residual error is small, and the adaptability of the calculation method is verified.

The invention relates to the technical field of structural engineering safety monitoring, in particular to a fire resistance real-time evaluation system and method based on a steel structure, and the method comprises the steps: collecting the surface radiation energy of the steel structure through a distributed thermal infrared imager array, and constructing a millimeter-level precision three-dimensional temperature field distribution diagram in combination with an environment temperature compensation algorithm; inputting the temperature field into the phase change correction model, and dynamically calculating a yield strength attenuation coefficient and an elastic modulus reduction coefficient; constructing a thermal-mechanical coupling nonlinear finite element model based on the degradation parameters, iteratively solving the displacement and stress response of the structure under the fire load action by adopting an arc length method, and extracting a buckling critical load spectrum; and according to the ratio of the real-time fire load to the critical load, a fire-resistant safety level signal is generated, and a graded early warning instruction is triggered. According to the invention, thermal-force response whole-process monitoring and intelligent early warning of the steel structure in a fire disaster can be realized, and the system has high spatial resolution, high physical coupling and multi-level response capability.

The invention provides a seismic isolation structure AMD control system based on the seismic energy storage principle, and relates to the technical field of structural engineering and damping control. The bottom of the building dissipates energy through the shock insulation support and the hydraulic inerter damper, earthquake input is converted into gravitational potential energy, mechanical energy and electric energy, and the energy storage module supplies energy to the active tuned mass damper arranged on the top of the upper structure. The system monitors structural response in real time through the acceleration sensor and the force sensor, the AMD intelligent control unit calculates and outputs control force capable of reducing upper vibration and generating reverse overturning bending moment, and therefore structural vibration is restrained and the shock insulation support is prevented from being pulled under the strong shock working condition, and the overall anti-seismic performance of the shock insulation structure is remarkably improved.

The invention belongs to the technical field of structural engineering, and relates to a design method of an FRP (Fiber Reinforced Plastic)-stainless steel mixed reinforcement seawater and sea sand concrete beam, which comprises the following steps of: inputting a design bending moment, and primarily selecting a section size and a material attribute; judging whether the area # imgabs0 # of the stainless steel bars in the pressed area is known or not, if the area # imgabs0 # is known, calculating # imgabs1 #, and if the area # imgabs1 # is unknown, calculating # imgabs2 # and # imgabs3 #; 4 # imgabs4 # and 5 # imgabs5 # are selected, and 6 # imgabs6 # and 7 # imgabs7 # are ensured; verifying whether the failure mode meets suitable rib failure or not, whether the flexural capacity meets # imgabs8 # or not and whether the ductility meets standard requirements or not, and ensuring that the area ratio is within a reasonable range; and finally, a more reasonable reinforcement area is obtained, and a result is output. According to the invention, the FRP rib is not used as a pressed rib, so that the stainless steel rib is configured in a pressed area, and a design method suitable for the form is provided, so that not only can the problem of corrosion of the steel bar in a marine service environment be effectively solved, but also relatively high flexural capacity and ductility can be ensured.

The embodiment of the invention provides a method and device for determining the ultimate bearing capacity of a damaged concrete roof panel and a processor, and belongs to the technical field of structural engineering safety evaluation. The method comprises the steps that at least one damage feature corresponding to a target concrete roof panel after damage is obtained; acquiring the corresponding ultimate bearing capacity and at least one inherent attribute of the target concrete roof panel when the target concrete roof panel is not damaged; substituting at least one damage characteristic corresponding to the target concrete roof panel after damage and the corresponding ultimate bearing capacity and at least one inherent attribute without damage into a corresponding prediction model, and determining the corresponding ultimate bearing capacity of the target concrete roof panel after damage; wherein the damage characteristics comprise the crack width, the crack length, the exposed length of a main rib steel bar and the stripping area of a concrete protection layer; the inherent attribute comprises the plate length.

The present application relates to the technical field of structural engineering and discloses a limited-slippage connecting structure and a construction method of the connecting structure. The limited-slippage connecting structure comprises a prefabricated plate, a concrete plate, a welding nail and a flexible sleeve. The concrete plate is arranged on the prefabricated plate, the welding nail is located in the concrete plate, the welding nail comprises a nail column and a nail head arranged at one end of the nail column, the other end of the nail column is connected with the prefabricated plate, and the flexible sleeve is sleeved on the nail column. The limited-slippage connecting structure can provide a proper slippage amount, effectively reduce the tensile stress of the concrete plate, and improve the long-term performance and durability of the concrete plate. At the same time, the limited-slippage connecting structure also has an anti-lifting effect to resist the separation and lifting of the concrete plate, reduce the sudden increase of the partial segment shear force caused by the excessive release of the combined effect, and improve the stress state of the transition section concrete plate.

The invention provides a test device and a test method for whole-process fixed-proportion multi-axis loading, and belongs to the technical field of structural engineering tests, and the test device comprises a counter-force frame, an actuator and a load distribution mechanism; the load distribution mechanism adopts a rigid distribution body with a first stage and a second stage connected in series, and each distribution body is provided with a load input point and two load output points; the actuator is hinged with an input point of the primary rigid distribution body, and the output of the actuator is respectively transmitted to the secondary rigid distribution body and a plurality of loading points of a test piece to be tested through the first to fourth connecting rod groups, so that the load input by the single actuator is distributed to different positions of the test piece according to a set proportion. According to the invention, the load proportion of the multi-axis rod system node test piece in the whole process of elasticity, plasticity and damage can be stably maintained, so that a load-deformation whole-process curve and a failure mode under the action of a fixed-proportion multi-axis load can be completely obtained, and a reliable test means is provided for researching the bearing performance of the multi-axis rod system node.

The application discloses a concrete connecting structure and a construction method thereof, relates to the field of structural engineering, and aims to solve the problem of high maintenance difficulty of a reinforced concrete beam and a reinforced concrete structure connected through a hinged mode. The concrete connecting structure comprises a support, a beam and a connecting joint. The concrete support of the support and the concrete beam of the beam are distributed at intervals along a first straight line direction. One end of each node longitudinal reinforcement of the connecting joint is anchored and connected with the concrete support, and the other end of each node longitudinal reinforcement is anchored and connected with the concrete beam. A concrete connecting piece is filled between the concrete support and the concrete beam along the first straight line direction and connects the concrete support and the concrete beam. The node longitudinal reinforcement between the concrete support and the concrete beam is located in the concrete connecting piece, and the linear rigidity of the connecting joint is smaller than that of the beam. The concrete connecting structure is used for connecting the support and the beam.

The application belongs to the technical field of structural engineering, in particular to a fast-installed fabricated concrete structure beam-column joint and a construction method thereof, which comprises a stand column, a connecting block is fixedly installed on one side of the stand column, a steel column is fixedly installed at the top of the connecting block, a cross beam is installed on one side of the steel column, a steel ring is fixedly installed on the side of the cross beam close to the steel column, a correction assembly is arranged at the top of the cross beam, and a fixing assembly is arranged on the side of the cross beam away from the steel column. When the component positioning is performed, the correction assembly and the fixing assembly are used to correct the position of the cross beam, the cross beam is moved downward by the crane, the component positioning is completed, the problem that the crane needs to repeatedly correct the position when the prefabricated beam is hoisted to the design position by the hoisting machinery is avoided, the construction operation is not complicated, the efficiency is low, the correction of the position of the cross beam is more convenient and fast, and the correction of the position of the cross beam is more accurate.

The utility model discloses an anti-collapse connecting node based on a self-resetting modular steel structure, which relates to the technical field of structural engineering and comprises a cross-shaped connecting plate arranged at a central connecting point of four modular container units, and modular connecting components are arranged in four separation corners of the cross-shaped connecting plate. Each modular connecting assembly comprises a module column set and a module beam set, and the module beam sets and the module column sets are fixedly connected. The anti-collapse connecting node based on the self-resetting modularized steel structure is simple in structure, has a self-resetting function, can effectively buffer external load and damage, and remarkably improves the anti-collapse performance of a modularized building.

This invention provides a prototype pipe pile shaking table test system for simulating the effects of foundation and superstructure, belonging to the fields of structural engineering, earthquake engineering, and foundation engineering. It includes a shaking table, a prototype pipe pile specimen horizontally arranged on the shaking table surface, a foundation action simulation component, a pile top axial compression simulation component, a pile cap simulation component, and a superstructure dynamic simulation component. The foundation action simulation component is fixed to the shaking table surface and covers the outside of the prototype pipe pile specimen. The pile top axial compression simulation component penetrates the inside of the prototype pipe pile specimen and extends to the outside of the pile bottom. The pile cap simulation component is connected to the top of the prototype pipe pile specimen, and the superstructure dynamic simulation component is positioned above the pile cap simulation component. This invention, using the above-mentioned test system, solves the problems of existing prototype pipe pile shaking table tests, such as large space requirements, high cost of foundation simulation, difficulty in loading real superstructures, inconvenient adjustment of working conditions, difficulty in comprehensively simulating pile-soil-structure interactions, and inability to accurately measure dynamic changes in pile axial force.

The application discloses a buried column foot and a construction method thereof, and belongs to the technical field of structural engineering; the technical problem that the reliable connection of steel pipe columns or steel pipe concrete columns with various cross sections and steel bars with any angle cannot be ensured during the construction process of a foundation bottom plate is solved. The buried column foot comprises a column foot and a universal connecting device; the column foot comprises a column foot bottom plate and a column body; the column body is connected to the upper end surface of the column foot bottom plate; the universal connecting device is connected to the column body; the universal connecting device comprises a horizontal connecting unit and a vertical connecting unit; the normal line of the vertical connecting unit outer vertical surface is consistent with the axis direction of the connected steel bar. The application ensures the reliability of the connection of steel pipe columns or steel pipe concrete columns with various cross sections and steel bars with any angle, avoids the damage and stress concentration of components caused by on-site hole opening, and makes the engineering structural system safe, stable and reliable.

The invention relates to the field of building materials and structural engineering, in particular to an analysis method of a composite interface cohesive mechanical behavior. The method for analyzing the cohesive mechanical behavior of the composite interface comprises the following steps: forming the composite interface; respectively applying a tensile load and an alternating electric field in the axial direction and the transverse direction of the modified carbon fiber; establishing a trilinear bond slip constitutive model; measuring an interface impedance phase angle in real time, and calculating an interface damage index; and correcting the trilinear bond slip constitutive model by using the damage index, and analyzing the composite interface cohesive mechanical behavior. According to the method, the nano SiO2 is successfully deposited on the surface of the carbon fiber, synchronous acquisition of interface slippage, strain and impedance spectrum under multi-coupling stress is also realized, and a synergistic effect mechanism of multiple fields to interface damage is conveniently disclosed.

The invention relates to the technical field of structural engineering optimization design and intelligent model selection, in particular to a structured generative adversarial network-based pipe truss structural design and model selection method, which comprises the following steps of: obtaining pipe truss load data and corresponding structural design schemes under different load conditions; respectively coding the load data and the design scheme to obtain a multi-dimensional dynamic load feature vector and graph structure information; inputting the two schemes into a generator, and generating a design scheme and a model selection scheme by taking the minimum steel use amount as a target under the constraint of physical information; discriminating the generation scheme and the real scheme through a discriminator, calculating an adversarial loss, and alternately training the generator and the discriminator until convergence; and finally, inputting the preset load and the structure design scheme into a convergence generator, and outputting an optimal scheme. According to the method, the end-to-end mapping from the dynamic load to the optimal design and model selection scheme is realized, the design efficiency is remarkably improved, and the structural lightweight is realized while the engineering reliability is ensured.

The invention relates to the technical field of structural engineering, in particular to a wind power tower concentricity control method and system. The method comprises the following steps: acquiring installation reference data of a wind power tower; determining the offset of the circle center of the ring piece according to the installation reference data of the wind power tower, and obtaining the offset data of the ring piece; concentricity detection is carried out based on the ring piece offset data, and concentricity initial data is generated; performing deviation analysis according to the concentricity initial data to obtain deviation data; identifying a deviation abnormal ring sheet based on the deviation data, and obtaining abnormal ring sheet data; performing ring opening deformation detection according to the abnormal ring piece data to obtain ring opening deformation data; and performing stability analysis according to the ring opening deformation data to obtain stability data. Based on the structure engineering technology, the installation precision and the concentricity control rate of the wind power tower drum are improved.

The utility model discloses an anti-collapse edge connecting node based on a self-resetting modularized steel structure, which relates to the technical field of structural engineering, and comprises an upper layer module connecting unit and a lower layer module connecting unit, both the upper layer module connecting unit and the lower layer module connecting unit are connected with a T-shaped connecting plate, and the T-shaped connecting plate comprises a transverse plate and a longitudinal plate. The longitudinal plate is arranged in the center of the transverse plate and is perpendicular to the transverse plate. The anti-collapse edge connecting node based on the self-resetting modular steel structure has the self-resetting capability, can better buffer external load impact, and improves the anti-collapse performance of a modular unit building.

This invention discloses a high-elasticity modulus concrete and its preparation method. The high-elasticity modulus concrete comprises, by weight, cementitious materials: volcanic rock: river sand: water: water-reducing agent in a ratio of 575:990:755:115:(20-22). The cementitious materials, by weight, comprise: cement: fly ash: silica fume in a ratio of (375-435):85:55. This invention utilizes volcanic rock as coarse aggregate to construct a rigid skeleton, and incorporates cementitious materials to leverage their synergistic physical filling and volcanic ash effect, optimizing the matrix density and interfacial transition zone structure. Combined with ultrasonic-assisted mixing, it achieves uniform dispersion and efficient hydration of fine materials. This concrete exhibits high compressive strength and high elastic modulus, demonstrates low shrinkage and creep characteristics, good volume stability, and excellent durability. It is suitable for high-rise and super high-rise buildings and large-span structural engineering, significantly improving structural stiffness, saving building materials, and increasing usable space utilization.

This invention discloses a shear force distribution demonstration device and measurement method, belonging to the field of structural engineering teaching technology. The device includes a base, a support mechanism, a loading mechanism, a demonstration mechanism, and a measurement mechanism. The support mechanism is a frame structure with sliding rails; the loading mechanism has replaceable supports with switchable constraints; the demonstration mechanism uses replaceable vertical columns with four-jaw chuck sleeves; and the measurement mechanism includes a strain measurement module, an S-shaped tension sensor, and a positioning ruler. This device adopts a fully modular, quick-release design, allowing for rapid switching between series and parallel systems, column constraint forms, and parameters. It simultaneously demonstrates the core knowledge points of inter-story force transmission in series and intra-story force distribution in parallel, verifying the shear force distribution law through measured data. This invention is easy to operate, combining visualization and quantitative measurement, effectively solving the pain points of abstract and difficult-to-understand traditional teaching methods, and significantly improving teaching effectiveness.

The invention relates to the technical field of building structure engineering, in particular to a method for calculating the maximum crack width of a secondary reinforced concrete beam with an increased cross section. The method comprises the steps of firstly determining parameters of an original beam and a reinforced beam, and then substituting the parameters into a formula to calculate the maximum crack width. On the basis of theoretical parameter analysis and a large number of tests, in combination with the balance condition of steel bar and steel plate force and the balance condition of the moment of the resultant force point of the concrete compression area when the crack is about to occur, the steel bar stress and the average crack width are calculated, and the non-uniform strain coefficient of the tensile steel bar between the cracks is calculated. And the actual calculation method for the maximum crack width of the secondary reinforced concrete beam with the increased cross section is obtained. According to the method, the crack condition of the beam can be well reflected, the calculation steps are clear, the calculation method is simple, and the defect that a reliable calculation method for the maximum crack width of the section-enlarged secondary reinforcement reinforced concrete beam is lacked is overcome.

The utility model relates to the technical field of structural engineering tests, in particular to an assemblable shear connector test loading device which comprises an assemblable loading frame, a hydraulic jack is arranged in the assemblable loading frame, a lifting device is arranged on the upper side of the assemblable loading frame, and a shear connector is detachably connected below the lifting device. The assemblable loading frame comprises a main body counter-force frame, the main body counter-force frame is composed of a left frame beam and a right frame beam, bolt connecting plates are arranged at the connecting positions of the left frame beam and the right frame beam, the two sets of bolt connecting plates are connected through friction type high-strength bolts, and a hydraulic jack is installed on the inner side of the right frame beam through bolts. The steel-concrete shear connector push-out test device solves the problems that a steel-concrete shear connector push-out test is limited by space and is single in connector form, site occupation can be effectively reduced, cost is saved, and the loading frame has assemblability and expansibility so as to adapt to shear connectors of various sizes.

This invention relates to an optimized construction method and system for cable clamp bolt group fastening, relating to the fields of bridge and building structural engineering. The method includes: obtaining the rigidity characteristics of the cable cross-section under the clamping force; constructing a numerical model of the cable clamp and cable based on the cable cross-section rigidity characteristics under the clamping force; tightening and optimizing the bolts based on the numerical model to obtain the required number of tightening passes and the required tightening force; and tightening the cable clamps and bolts installed on the cable according to the required number of tightening passes and the required tightening force. This invention improves tightening efficiency and quality while solving problems caused by crosstalk effects.

This invention discloses an early-strength, high-crack-resistant cementitious material suitable for water conveyance tunnel linings. It is composed of nano-silica, metakaolin, granulated blast furnace slag powder, cement, fly ash, limestone powder, and waste alumina whiskers. By controlling the particle size distribution of each component, the overall particle size distribution curve closely matches a pre-set mathematical model, thus achieving multi-scale filling from nanometer to micrometer scales. The early-strength, high-crack-resistant cementitious material, after uniform mixing of all components, exhibits a 3-day compressive strength >32 MPa and a flexural strength >5.6 MPa; a 28-day compressive strength >58 MPa and a flexural strength >9.0 MPa. Using standard mortar mix proportions, a circular restraint cracking test was conducted, and the 28-day crack width was controlled within 0.2 mm. This material combines rapid early strength development, excellent volume stability, and outstanding crack resistance, making it suitable for strongly restrained structural engineering.

This utility model discloses a support frame for building construction, relating to the field of building structural engineering technology. The support frame includes: a main upright, horizontal bars, a top support assembly, a fixing assembly, an inclined support assembly, and an auxiliary positioning assembly; the main upright and horizontal bars are hinged; the fixing assembly includes a first fixing plate and a second fixing plate; the first fixing plate and the second fixing plate are vertically fixed to the main upright at intervals; each of the first fixing plate and the second fixing plate has a mounting hole; the top support assembly includes a first support plate and a second support plate; the first support plate and the second support plate are vertically fixed to the horizontal bars at intervals. This utility model, through the coordinated design of its various structures, eliminates reliance on the ground, does not occupy passage space in doorways, and is suitable for uneven ground conditions; it enhances stability through hinges, triangular supports, and auxiliary positioning, ensuring the smooth pouring of door beams, making construction convenient, safe, and efficient.

The present invention belongs to the technical field of underground structural engineering, and specifically relates to a prefabricated lining joint waterproofing structure and construction method for an open-cut tunnel with upper and lower blocks. The structure comprises a lining ring, which is formed by splicing a prefabricated lining upper block and a prefabricated lining lower block arranged opposite each other. The prefabricated lining upper block and the prefabricated lining lower block each comprise a structural plate and two side walls connected to the ends of the structural plate. The two side walls of the prefabricated lining upper block and the two side walls of the prefabricated lining lower block are respectively connected by a mortise and tenon structure. A side wall waterproofing groove extending longitudinally is provided on the outer side of the tenon on the circumferential joint surface of the side wall provided with the tenon, and a side wall waterproofing strip is adhered to the side wall waterproofing groove. The present invention not only saves waterproofing materials and has high construction quality, but also allows waterproofing construction to achieve a certain process overlap with prefabricated lining assembly, thereby speeding up lining construction and shortening the overall construction period of the open-cut tunnel.

The invention relates to the technical field of structural engineering and computational mechanics, in particular to a method and system for determining the axial pressure bearing capacity of a concrete filled steel tube at negative temperature, which responds to a bearing capacity calculation request, obtains working condition parameters of a target component and constructs a finite element simulation model for simulation analysis to obtain simulation bearing capacity data; the simulation bearing capacity data is compared with a standard theoretical value obtained through calculation according to a preset standard formula, a deviation coefficient is obtained, when the deviation coefficient is larger than a preset deviation threshold value, coefficient fitting is conducted through a preset size effect-negative temperature coupling correction model, a size effect correction coefficient and a negative temperature damage correction coefficient are obtained, and the size effect correction coefficient and the negative temperature damage correction coefficient are obtained. And based on the size effect correction coefficient and the negative temperature damage correction coefficient, the standard theoretical value is corrected, and the final axial compression bearing capacity is obtained. The problem of poor negative temperature adaptability caused by size effect and large-diameter deviation in the prior art is solved, and the structural risk caused by misjudgment of the bearing capacity is avoided.

This invention discloses a method for obtaining the wind-induced vulnerability curve of transmission towers based on failure probability, relating to structural engineering technology. The method includes the following steps: establishing a probability distribution model of the extreme response of the transmission tower to wind load; constructing a probability distribution model of the structural bearing capacity of the transmission tower; obtaining the failure probability based on vulnerability analysis using Latin hypercube sampling; plotting vulnerability curves with wind speed as the horizontal axis and failure probability as the vertical axis, drawing curves under different failure criteria to obtain vulnerability curves based on failure probability; performing vulnerability analysis in conjunction with engineering estimates to obtain the loss rate; plotting vulnerability curves; and finally, plotting a curve with wind speed as the horizontal axis and loss rate as the vertical axis to obtain vulnerability curves based on engineering estimates. This invention's method is characterized by its high efficiency in analytical calculation and is suitable for analyzing the failure probability and loss rate of transmission towers in engineering contexts.

This utility model discloses a reinforcement node structure for the perimeter of an opening in the shear wall of an existing building, belonging to the field of structural engineering technology. It includes the original shear wall, original floor slab, newly added concrete layer, equivalent through-wall bolts, structural adhesive, flat steel, angle steel, carbon fiber cloth, connecting plates, the newly added shear wall opening, and the original shear wall reinforcement. The original structural wall, slab, etc., are integrally cast. The newly added shear wall opening is demolished using non-destructive static demolition, with positioning dimensions based on the building's dimensions. After demolition, the original wall reinforcement is welded and anchored. The cross-section of the newly added steel structure is determined by calculation. The equivalent through-wall bolts pass through the original structural wall. This utility model illustrates a reinforcement method for the perimeter of an existing building with a newly added shear wall opening due to a change in building function. This method effectively reinforces and strengthens the shear wall weakened by the opening, with high construction efficiency, reliable nodes, minimal impact on the building, achieving the expected reinforcement goal, and effectively improving the structure's seismic performance.

The application belongs to the technical field of structural engineering and relates to a damage deformation controllable composite column-concrete beam fabricated node and a mounting method, which comprises a steel pipe concrete composite column, a prefabricated concrete beam and a self-resetting energy dissipation structure. The surface of the composite column is provided with a connecting plate and a second hinged plate, and the end of the prefabricated concrete beam is provided with an H-shaped steel and a second hinged plate, which are hinged through a pin shaft. A friction energy dissipation component is arranged between the first and second hinged plates and is used for friction energy dissipation under small earthquakes. The two ends of a plastic energy dissipation plate and a super-elastic reset plate are respectively detachably connected with the connecting plate and the H-shaped steel and are respectively used for plastic energy dissipation under medium earthquakes and super-elastic reset after earthquakes. The node is cooperated with multi-stage energy dissipation and self-resetting, realizes no damage under small earthquakes, repairable under medium earthquakes and no collapse under large earthquakes, is easy to replace after earthquakes and is suitable for high-intensity region fabricated buildings.