54results about How to "With self-resetting ability" patented technology

The invention discloses a piezoelectric-SMA composite variable friction intelligent damper, belonging to the field of civil engineering structure vibration damping control. The piezoelectric-SMA composite variable friction intelligent damper comprises an upper cover plate and a lower connecting fixed plate, wherein a driver horizontal locating plate fixedly connected with the upper part structure of a vibration isolating layer is positioned between the upper cover plate and the lower connecting fixed plate; the driver horizontal locating plate is provided with a plurality of SMA wire adjusting valves along the vertical direction; a plurality of SMA wires are arranged between the upper cover plate and the lower connecting fixed plate; the two ends of each SMA wire are respectively fixed on the upper cover plate and the lower connecting fixed plate; the SMA wires pass through the corresponding SMA wire adjusting valves; and a laminated piezoelectric driver is also arranged between the upper cover plate and the lower connecting fixed plate. The piezoelectric-SMA composite variable friction intelligent damper has simple structure, convenient assembly and disassembly as well as good repair capacity after vibration; the intelligent damper has self-resetting capability, higher passive damping under the condition of power failure, low initial rigidity and good vibration isolation effect; and the SMA wires can provide vertical uplift bearing capacity and supply vertical damping when in vertical vibration.

The invention discloses a buffer energy-consuming anti-drop-beam device for a bridge, which can effectively resist to an earthquake disaster, prevent an adverse impact caused by over lateral displacement of the bridge and avoid the damage caused by the drop of a beam, and is convenient to mount and replace. The buffer energy-consuming anti-drop-beam device comprises an upper mounting plate which is fixedly mounted on a beam body, and a lower mounting plate which is fixedly mounted on a bridge pier. A guide groove structure is arranged at the lower end of the upper mounting plate; a transverse bridge direction guide groove of which the lower end is provided with an opening is formed in the guide groove structure. Energy consuming pieces which are made of soft steel and are provided with variable-width plate bodies are arranged between the upper mounting plate and the lower mounting plate in the transverse bridge direction at intervals; the upper parts of the energy consuming pieces are positioned in the transverse bridge direction guide groove and are restrained by the transverse bridge direction guide groove; the lower parts of the energy consuming pieces are fixedly connected with the lower mounting plate.

The invention relates to a magnetorheological-shape memory alloy hollow ball intelligent vibration isolator, which mainly comprises an upper flange, a sealing ring, a conducting wire, a hollow piston connecting rod, a magnetorheological fluid, thick-wall and thin-wall shape memory alloy hollow balls, a working cylinder, an electromagnetic solenoid ring and a lower flange. The vibration isolator is characterized in that the upper end of the piston connecting rod is connected with the upper flange, and the raised circumference of the lower end of the piston connecting rod is provided with the electromagnetic solenoid ring which is connected with an external control power supply by the hollow piston connecting rod through the conducting wire; the magnetorheological fluid is filled in the working cylinder; four layers of the thick-wall and thin-wall shape memory alloy hollow balls are placed at the raised upside and downside of the lower end of the piston connecting rod respectively, and a piston free from a force is suspended in the middle of the working cylinder by adjusting the size of the working cylinder and the wall thickness of the shape memory alloy balls; and the vibration isolator is fixed at a position needing to carry out vibration control through the upper flange and the lower flange. The vibration isolator has the advantages of strong self-resetting capability and vibration isolating capability, simple structure and convenience for mounting and detaching, and still has vibration isolating function under the condition of power failure.

The invention discloses a fabricated self-resetting concrete frame soft steel energy dissipation composite joint. The fabricated self-resetting concrete frame soft steel energy dissipation composite joint includes a prefabricated reinforced concrete column, a prefabricated reinforced concrete beam, soft steel dampers, a pre-stressed steel strand, embedded high-strength bolts and anchored steel bars, wherein the prefabricated reinforced concrete beam is provided with a beam end embedded steel sleeve, and a column end embedded steel plate is arranged at the butt-joint position between the prefabricated reinforced concrete column and the beam end embedded steel sleeve; the pre-stressed steel strand penetrates through a pre-stressed steel strand hole channel of the prefabricated reinforced concrete column, a pre-stressed steel strand opening of the column end embedded steel plate, a pre-stressed steel strand opening of the beam end embedded steel sleeve and the pre-stressed steel strand channel of the prefabricated reinforced concrete beam in sequence, so that the prefabricated reinforced concrete column and the prefabricated reinforced concrete beam are spliced together; and the soft steel dampers are arranged on both sides of a web plate of the section steel part of the beam end embedded steel sleeve. The fabricated self-resetting concrete frame soft steel energy dissipation composite joint enables the prefabricated concrete frame structure to have excellent seismic performance and self-resetting ability under high earthquake intensity.

The invention discloses a friction energy dissipation combination node for an assembly type self-resetting pre-stressed concrete framework. The friction energy dissipation combination node comprises aprefabricated reinforced concrete column, a prefabricated reinforced concrete beam, a column end pre-embedded steel plate, a friction plate, an unbonded pre-stress steel strand, a beam end pre-embedded steel sleeve, and a pre-stress steel strand porous channel; an end plate anchor bar, an anti-shearing support and a friction plate fixing support are welded on the column end pre-embedded steel plate; an anti-shearing stud is welded on the inner wall of the beam end pre-embedded steel sleeve, the friction plate is arranged on a profile steel web, a friction plate fixing screw is welded on the friction plate and penetrates through the friction plate fixing support in a reserved screw opening, two nuts arranged inside and outside the friction plate fixing support fixe and regulate the position of the friction plate, the seismic energy is dissipated by rubbing the profile steel web of the beam end pre-embedded steel sleeve, the friction plate can be changed, and the prefabricated assemblytype concrete framework structure is excellent in anti-seismic property and self-resetting capability in the high-intensity earthquake.

The invention discloses an in-series disc spring large deformation energy consumption beam column node, which comprises an assembly type column, an assembly type beam and a disc spring combination type damper, wherein the disc spring combination type damper consists of an energy consumption rod, a disc spring set, an internal thread sleeve, an outer sleeve, a sliding guide rod and an extrusion nut, one end of the disc spring combination type damper is fixed on the fixed plate of a surface of the assembly type beam, and the other end passes through the flange plate of the assembly type column and presses tightly the flange plate. By adjusting the pressure of the extrusion nut, tensile deformation generated by the two ends of the disc spring combination type damper can be fully supplied by the energy consumption rod under the action of small and moderate earthquakes, the other part is supplied by the compressive deformation of the disc spring set, so that the disc spring combination typedamper has better deformability, and the fatigue performance of the disc spring combination type damper is conducive to being improved.

The invention provides a fabricated concrete self-resetting beam-column joint connecting structure and an assembling method. A prefabricated reinforced concrete beam and a prefabricated reinforced concrete column of the structure are vertically connected through a connecting plate, pre-buried connecting steel plate grooves are formed in the connecting ends of the prefabricated reinforced concretebeam and the prefabricated reinforced concrete column correspondingly, and two sides of the connecting plate are connected with the two pre-buried connecting steel plate grooves; and prestressed tendons sequentially transversely penetrate through the prefabricated reinforced concrete beam, the pre-buried connecting steel plate groove in the prefabricated reinforced concrete beam, the connecting plate and the pre-buried connecting steel plate groove of the prefabricated reinforced concrete column and finally penetrate out of the prefabricated reinforced concrete column, each prestressed tendonanchorage device is correspondingly screwed and fixed at the extending end of the corresponding prestressed tendon, and energy dissipation dampers are mounted on the two sides of the connecting plate.The technical problems of how to develop a joint connecting mode which is environmentally friendly, easy to assemble, capable of effectively dissipating energy under the action of earthquake loads and meanwhile ensuring that the structure is small in deformation after an earthquake or can be restored to the initial state are solved.

The invention relates to a partially bonded prestress assembly self-reset bridge pier column node and a method. The node comprises a pier column, wherein a main body of the pier column is fabricated by concrete; the lower end of the pier column is inserted into a foundation and fixedly connected with the foundation; the upper end of the pier column is fixedly connected with a capping beam; a prestressed reinforcement is arranged in the pier column; a central axis of the pier column is coincided with that of the prestressed reinforcement; the lower end of the prestressed reinforcement is inserted into the foundation along with the pier column; the middle of the prestressed reinforcement is arranged in the pier column; the upper end of the prestressed reinforcement penetrates out of the piercolumn and is inserted into the capping beam; the lower end of the prestressed reinforcement is bound and fixed to the pier column; the upper end of the prestressed reinforcement is bound and fixed to the capping beam; the middle of the prestressed reinforcement is arranged in a prestressed reinforcement duct of the pier column; the upper end of the prestressed reinforcement duct penetrates through the pier column; the lower end of the prestressed reinforcement duct is positioned in the pier column; and the lower end of the prestressed reinforcement is fixedly connected with the pier column through an anchor piece. The disadvantages of long construction cycle and high cost due to adoption of an external dissipative element and post tensioned application of prestress can be avoided, and the probability of brittle failure of the pier column is reduced.

The invention discloses a prefabricated assembled type toughness combined shear wall structure and a construction installation method thereof. Construction is conducted on foundations. The prefabricated assembled type toughness combined shear wall structure comprises a steel plate combined shear wall, steel pipe concrete columns, shear-resistant steel plates, bolts, overhanging plates and anchor rods. The steel plate combined shear wall is attached to the foundations and is provided with a plurality of round holes. The steel pipe concrete columns are fixed to the two vertical side edges of thesteel plate combined shear wall. The shear-resistant steel plates are clamped on the lower portion of the steel plate combined shear wall and are provided with strip-shaped pre-open holes corresponding to the round holes. The steel plate combined shear wall is clamped and fixed between the two shear-resistant steel plates through the bolts. The overhanging plates are fixed to the steel pipe concrete columns. The bottom ends of the anchor rods are pre-embedded in the foundations. Upper rod bodies penetrate through the overhanging plates and then are sleeved with belleville spring sets, and twoends are symmetrically sleeved with limiting steel plates and high-strength nuts. The steel plate combined shear wall has flexural bearing capacity, self-resetting ability is enhanced, and the steelplate combined shear wall also has better toughness in an earthquake.

A self-recovery concrete shear wall with high-strength reinforcing bar belongs to the technical field of reinforced concrete shear wall and is characterized in that the shear wall comprises a longitudinal bar at the end edge component, a longitudinal bar distributed in the middle part of the wall vertically, a horizontally distributed bar and a concrete, wherein part of the reinforcing bar in the longitudinal bar of the wall edge component is replaced by a high-strength reinforcing bar; alternatively, part of the reinforcing bar in the longitudinal bar of the end edge component and part of the reinforcing bar distributed in the middle part of the wall vertically are replaced by the high-strength reinforcing bar simultaneously. The high-strength reinforcing bar comprises the longitudinal bar with the yield strength more than 500MPa such as rebar, steel wire, high-strength steel strand and fiber-reinforced composite (FRP); the high-strength reinforcing bar can be dispersed at the circumference of the edge component or arranged in the edge component in a concentration way. The self-recovery concrete shear wall can improve the antiroll stiffness of the shear wall, postpone the degradation of the antiroll stiffness, lead the structure to have the self-recovery capability and reduce the structural residual deformation after earthquake.

The invention relates to an SMA negative rigidity damping device. The SMA negative rigidity damping device comprises an upper seat plate, a lower seat plate and a sliding block located between the upper seat plate and the lower seat plate. The lower side surface of the upper seat plate is provided with a lower convex cambered surface, the upper side surface of the lower seat plate is provided withan upper convex cambered surface, the upper side surface of the sliding block is provided with a lower concave cambered surface which is in concave-convex fit with the lower convex cambered surface of the upper seat plate, the lower side surface of the sliding block is provided with an upper concave cambered surface which is in concave-convex fit with the upper convex cambered surface of the lower seat plate, and the damping device further comprises an SMA cable which surrounds between the upper seat plate and the lower seat plate and is used for pressing the upper seat plate and the lower seat plate on the sliding block. The SMA negative rigidity damping device has a self-resetting capability, and the SMA cable has a capability of restoring self deformation, so that the damping device can restore self deformation. The SMA negative rigidity damping device utilizes the lower convex cambered surface of the upper seat plate and the upper convex cambered surface of the lower seat plate toform a negative rigidity effect, so that the internal stress of the lower structure of the damping device is reduced.

The invention discloses a self-resetting composite energy dissipation support utilizing gears to amplify displacement and pulleys to open inhaul cables. The self-resetting composite energy dissipationsupport is jointly composed of the gears, a sawtooth-shaped metal strip, the pulleys, the high-strength steel wire inhaul cables, viscoelastic dampers, buckling restrained braces and metal rubber energy dissipation devices; and under the action of a small earthquake, the small gears do not make contact with the sawtooth-shaped metal strip, the viscoelastic dampers play a role in energy consumption, under the action of a medium earthquake or a large earthquake, the small gears are meshed with the sawtooth-shaped metal strip to drive the gears and the pulleys to rotate, so that the high-strength steel wire inhaul cables are tensioned and applies tensile force to the high-strength steel wire inhaul cables, the high-strength steel wire inhaul cables play the same role as a prestressed tendon,therefore the purpose of self-resetting is achieved, the gears with different diameters are combined, displacement can be amplified, the high-strength steel wire inhaul cables bear larger tension, and the high-strength steel wire inhaul cables have high self-resetting capacity. The self-resetting composite energy dissipation support can achieve energy dissipation and seismic mitigation under earthquakes with different strengths and can achieve self-resetting under the conditions of medium and large earthquakes, and the safety of a main body structure is protected.

The invention relates to a post-earthquakerepairable diamond steel truss energy dissipation fuse after an earthquake. The post-earthquakerepairable diamond steel truss energy dissipation fuse is usedfor energy dissipation and shock absorption of pulling / compressive structures such as steel trusses. The post-earthquakerepairable diamond steel truss energy dissipation fuse after the earthquake comprises prefabricated parts, connecting parts with screw holes, rigid rods with screw holes at the two ends, friction type high-strength bolts, gaskets with bearings, springs, limited-angle rotating ball joint, a center connecting ball, spring sleeves, and a lead part. According to the post-earthquakerepairable diamond steel truss energy dissipation fuse after the earthquake, as a part of a steel truss structure, the repairable diamond steel truss energy dissipation fuse is arranged at the pulling / compressive rod end of the steel truss, under the horizontal load action such as the earthquake, damping is provided through friction connection and the lead at rigid rod joints, earthquakeenergy is dissipated, and thus the action of energy dissipation and shock absorption is achieved; elastic force of the springs provides deformation restoring force, thus the fuse has a good ability to restore deformation, the overall structure in the earthquake is protected, and the dual functions of energy dissipation and a protection structure of the fuse are reflected; and after the earthquake, the damaged friction joints, sleeves or lead can be repaired or replaced quickly, and thus the structure function is quickly recovered.

Provided is a self-resetting buckling-resistant support. The self-resetting buckling-resistant support belongs to the field of building shock-absorption, and is used for solving the problem that an existing support doesn't have a self-resetting ability. The technical key points are that two steel plates with racks are symmetrically fixed to two side surfaces of the steel plates respectively, gears meshing with the racks are arranged between the steel plates with the racks and the inner wall of a constraining outer sleeve which corresponds to and is parallel to the steel plates, and both the upper and the lower sides of each gear are directly fixed to two vortex springs limited on the parallel inner wall; and the gears and the vortex springs are fixed between the steel plates with the racks and the inner wall of the constraining outer sleeve which corresponds to and is parallel to the steel plates by a supporting frame extending out of the parallel inner wall. The effect is that energy-consumption inner core axial loading bearing is dispersed into spring vortex plane bearing.

The invention discloses a welding table suitable for processing metal pipes and metal plates. The welding table suitable for processing metal pipes and metal plates comprises a base, a processing table and clamping tables, wherein the clamping tables comprise the first clamping table, the second clamping table and the third clamping table; two sliding rails are arranged on the processing table inparallel; the first clamping table and the second clamping table are installed on the same sliding rail; a movable chuck is arranged on the first clamping table; a fixed chuck is arranged on the second clamping table; the movable chuck and the fixed chuck are coaxially and oppositely arranged; the sliding rail between the first clamping table and the second clamping table is provided with a rotating supporting mechanism; and two U-shaped blocks, used for clamping the metal plates, of the third clamping table are respectively arranged on the two sliding rails and are provided with tightening rods. The welding table can be simultaneously suitable for processing the metal pipes or the metal plates.

The invention relates to the field of constructional engineering, in particular to an assembly type energy dissipating joint connecting a suspension steel column and an installation method of the assembly type energy dissipating joint connecting the suspension steel column. The assembly type energy dissipating joint comprises an end plate, energy dissipating joint webs and energy dissipating jointflanges, wherein the energy dissipating joint flanges are opposite to each other, the energy dissipating joint webs are opposite to each other, the end plate is installed at the top ends of the energy dissipating joint flanges and the energy dissipating joint webs, the energy dissipating joint webs are located between the opposite energy dissipating joint flanges, and the energy dissipating jointwebs and the energy dissipating joint flanges are used for fixing the suspension steel column. When a wind load or an earthquake load happens, the energy dissipating joint can consume energy generated by the wind load and the earthquake load, the story drift difference between a filled sub-storey suspended on the suspension steel column and a main body structure is reduced, the anti-seismic performance of the sub-storey can be improved, and the safety performance of the sub-storey can be guaranteed.

The invention provides a shear wall frame. The shear wall frame is characterized in that the shear wall frame comprises a corrugated plate, a frame and shear pieces. The corrugated plate is arranged on the inner periphery of the frame, and the edges of the corrugated plate are connected with the frame. Concave parts and convex parts which are alternately arranged are arranged on any surface of the corrugated plate. The multiple shear pieces are distributed on the two sides of the corrugated plate, and all the shear pieces are connected with the corrugated plate and arranged in the different concave parts. The corrugated plate and the frame form a main body structure of the shear wall frame, when the shear wall is vibrated, the surface of the corrugated plate obliquely intersects with vibration perpendicular to the central plane of the corrugated plate, the wave crest firstly encounters vibration force, the oblique crossing angle of the vibration force of the wave crest of the corrugated plate perpendicular to the central plane of the corrugated plate is small, and the bearing capacity of the shear wall is improved.

The invention provides a quake-proof joint of a buried pipe network, which is capable of ensuring the safety of the buried pipe network under the condition of earthquakes and has self-resetting capacity. The quake-proof joint of the buried pipe network consists of a connecting pipeline, a right connecting pipeline flange, a left connecting pipeline flange, a lantern ring, a right pipeline flange, a left pipeline flange, a left shape memory alloy bar, a right shape memory alloy bar, a right bolt, a left bolt and a left shape memory alloy bolt, wherein the connecting pipeline is connected with the pipeline flanges; the lantern ring is arranged in the middle of the connecting pipeline; the connecting pipeline flanges are connected with the pipeline flanges through the shape memory alloy bolts; the pipeline flanges are connected with the bolts; and the bolts are connected with the shape memory alloy bars. The invention ensures the safety of the buried pipe network under the condition of earthquakes, reduces the secondary disasters of earthquakes, and has the advantages of self-resetting capacity, no need of repair after the earthquakes and reduced maintenance expense.

The invention discloses fabricated multi-stage flexible energy-dissipation height-limiting frames. The fabricated multi-stage flexible energy-dissipation height-limiting frames are arranged in an areaor a traffic safety management area where a road, a bridge, a tunnel, a pipe culvert and the like need to be protected, the positions of the height-limited frames which need to be set are selected according to the field condition, and each height-limiting frame adopts a fabricated structure and is provided with a multi-stage protection and flexible energy dissipation device and is used for reducing the maximum impact force of an impact vehicle, the first-stage protection is a high-damping rubber energy dissipation module on a thin-walled pipe cross beam, the second-stage protection is a shear-type buffer support, and the third-stage protection is a weak point where the thin-walled pipe cross beam is manually set at a flange at the weak end of the cross beam. Through the structural designthat the self-resetting capability is strong, the energy consumption is high, the light weight and modularization are achieved, the replacement and maintenance are convenient, and fabricated type full-bolts are connected, the limited vehicle can be effectively intercepted, vehicle damage is reduced, casualties are avoided, and road traffic safety and smoothness are guaranteed.

The invention provides a low-damage joint of assembled self-resetting concrete frame with modular energy consumption parts, including prefabricated reinforced concrete columns, prefabricated reinforced concrete beams, pre-embedded steel plates at column ends, pre-embedded shaped steel sleeves at beam ends, and soft steel damping device, unbonded prestressed steel strand, prestressed steel strand channel, high-strength hinged hole bolts; one side of the embedded steel plate at the column end is the anchor end, and the other side is the butt plate at the column end; the embedded section steel at the beam end The inner wall of the steel sleeve is welded with a shear key, and the steel web at the beam end is the butt plate at the beam end. The mild steel damper is arranged at the steel web at the beam end, fastened on both sides of the web by high-strength reamed hole bolts, and the beam-column components are connected by prestressed steel strands.

The invention provides a rotatable type self-resetting energy consumption device, and belongs to the technical field of damping. The rotatable type self-resetting energy consumption device comprises aself-resetting part, an energy consumption part and a connecting part, wherein the self-resetting part comprises a cutting steel plate with carving teeth, an annular spring and a high-strength bolt;the energy consumption part adopts a cutting type damper; the connecting part comprises a connecting plate and a high-strength bolt; the post-earthquake automatic resilience is achieved through the self-resetting part to eliminate residual deformation; the earthquake energy is dissipated through the energy consumption part; the connecting part connects the rotatable type self-resetting energy consumption device with a structural assembly, restrains the concrete of a nodal region, and improves the earthquake resistance capacity of a node. The rotatable type self-resetting energy consumption device can be installed on a beam column node or a pedestal node, the use function of a building is not affected, not only can a self-resetting capacity be provided, but also an energy consumption capacity can be provided, no residual displacement exists after the earthquake; the device has outstanding advantages of dissipating earthquake energy, eliminating residual displacement and not affecting building use function, and can be widely applied to the earthquake-proof design of a new-built building and the earthquake-proof reinforcement of an existing building.

The invention discloses a torsion anti-destabilization device of a buckling-restrained brace, and belongs to the field of building vibration reducing. The torsion anti-destabilization device of the buckling-restrained brace is used for solving the problems that an existing buckling-restrained brace mainly depends on inner core deformation energy consumption resulting in the situation that an innercore is out of action untimely in an earthquake, the replacement and maintenance costs are high, and the self-reset capacity is not achieved. According to the technical main points, the torsion anti-destabilization device is characterized in that the torsion anti-destabilization device comprises torsion springs, limiting clamps and a guiding iron bar, the guiding iron bar penetrates through the energy consumption inner core in the direction perpendicular to the axial direction of the energy consumption inner core and is fixed to the energy consumption inner core, an iron core is exposed on the two sides of the interior of a space, and the torsion springs are connected to the iron core in a covering mode; spring force arms connected with torsion spring bodies are limited by the limiting clamps on the upper side and the lower side of a torsion plane formed when the torsion springs twist, and the torsion anti-destabilization device has the effects that the torsion anti-destabilization device is mounted, and axial load of the energy consumption inner core is borne and dispersed on the spring torsion plane to be borne, so that energy consumption load of the energy consumption inner core is greatly reduced, and the possibility of destabilization of the inner core is reduced, thus the replacing frequency of the inner core is reduced, and the maintenance cost is reduced.

The invention relates to the field of engineering structure shock isolation and absorption, and discloses a self-resetting support. The self-resetting support comprises an upper support plate and a lower support plate and further comprises a supporting piece and energy dissipaters, the supporting piece is placed on the lower support plate, the upper support plate is placed on the supporting piece,the plurality of energy dissipaters are arranged on the periphery of the supporting piece, and the two ends of each energy dissipater are detachably connected with the upper support plate and the lower support plate correspondingly. According to the self-resetting support provided by the invention, swing deformation occurs under the action of an earthquake, the earthquake energy can be dissipatedthrough the energy dissipaters in the support, the vibration frequency of the structure can be changed through swing of the supporting piece in the support, and meanwhile, the support has good self-resetting capacity under the self-weight of the upper structure, so that the problem that a support in an existing engineering structure is sheared and damaged in a strong earthquake is solved, the energy dissipation capacity and the self-resetting capacity of the support are enhanced at the same time, and the post-earthquake function restorability of the whole engineering structure is improved.

The invention provides a dual pipe constraint type self-resetting buckling-restrained brace device based on belleville springs. The dual pipe constraint type self-resetting buckling-restrained brace device comprises an inner constraint pipe, an outer constraint pipe, a core energy consuming pipe, two guide pipes, two positioning plates, two inner end plates, two outer end plates, two positioning end plates, two connecting end plates and two groups of belleville springs; ends of the positioning plates are correspondingly inserted into two end openings of the inner constraint steel pipe; the positioning plates and the inner constraint steel pipe are correspondingly inserted into the core energy consuming steel pipe; and the two ends of the core energy consuming steel pipe and the end openings, far from the inner constraint steel pipe, of the two positioning plates are correspondingly and fixedly connected to the positioning end plates. According to the dual pipe constraint type self-resetting buckling-restrained brace device, the self-resetting resilience is provided by the belleville springs connected in series, the mechanical property of the belleville springs is stable, during theusing process, the supporting elastic resilience is equivalent to the design level, the stress loss is not caused, and the stable supporting self-resetting capacity is achieved.

The invention provides a fabricated concrete self-resetting beam-column combined joint connecting structure and an assembling method. Groove-shaped steel plates are mounted on the upper side and the lower side of the beam end of the connecting structure, a prefabricated reinforced concrete column and a prefabricated reinforced concrete beam are perpendicular to each other and are connected through cooperation of special-shaped connecting steel plates and the groove-shaped steel plates, unbonded prestressed tendons transversely penetrate through the whole formed by the prefabricated reinforced concrete column and the prefabricated reinforced concrete beam, and the ends of the unbonded prestressed tendons are fixed through a plurality of prestressed tendon anchorage devices. The technical problem of how to develop a joint connecting mode which is easy and convenient to assemble, good in energy consumption effect and capable of being repaired after an earthquake or being restored to the initial state is solved. According to the fabricated concrete self-resetting beam-column combined joint connecting structure and the assembling method, connection between the prefabricated reinforced concrete beam and the prefabricated reinforced concrete column is achieved so as to meet the requirements in actual design and construction, an assembled beam-column combined joint consumes energy through deformation under the earthquake action, can be quickly replaced and repaired after the earthquake and has certain self-resetting capacity.

The invention discloses a three-dimensional energy dissipation and earthquake isolation support seat which comprises a base plate, a top plate, U-shaped strips, a sliding element, a box-shaped component, a support shaft, a disc spring and a U-shaped frame, wherein the base plate and the top plate are in parallel and corresponding arrangement at top and bottom; the two ends of the U-shaped strips are respectively and fixedly connected with the edges of the base plate and the top plate; the plurality of U-shaped strips are uniformly distributed; the sliding element is glidingly attached to the top surface of the base plate, and slides in a horizontal plane in a position limiting way; the box-shaped component is fixed on the top surface of the sliding element; one end of the support shaft isfixed on the top surface of the box-shaped component; the other end of the support shaft penetrates out of the top plate; the disc spring is arranged on the support shaft in a sleeving way; and the U-shaped frame reversely covers the top surface of the top plate. The three-dimensional energy dissipation and earthquake isolation support seat has the advantages that the earthquake isolation and energy dissipation effects are good; the construction is convenient and fast; and the material taking is easy, and the like. The earthquake power effect is isolated in the horizontal free direction; underthe vertical earthquake effect, the earthquake isolation performance is good; certain self resetting capability is realized; the problem that the vertical earthquake waves are seldomly considered inthe earthquake isolation design of the engineering at a current stage can be effectively solved; and high practicability is realized.

The invention relates to a self-resetting metal damper. The metal damper is used for energy dissipation of house buildings. The metal damper comprises a shell, a piston rod, elastic bodies, energy dissipation pieces and a connecting piece and can be applied to new and old building structures as an energy dissipation element. The invention adopts the following working principle: under the action of wind load or seismic load, the piston rod and the shell carry out relative motion axially, the piston rod drives the energy dissipation pieces to deform, the energy dissipation pieces begin to dissipate the seismic energy after entering into the plastic state, and after ground motion ends, the piston rod is forced to return to the initial position by the pressure or tension caused by the two elastic bodies, thus eliminating residual deformation.

The invention discloses a magnetorheological landing mechanism with repeatable buffering and a buffering method. The mechanism includes an outer cylinder, a cylinder cover, a foot pad, a push rod, a magnetic inner catheter and an outer catheter. The outer cylinder is provided with a piston, which is divided into an upper liquid chamber and a lower liquid chamber; the upper end of the piston is connected with the lower end of the spring, the lower end of the piston is connected with the upper end of the push rod, the piston is provided with two through holes, and the through holes are A magnetic inner conduit and a check valve are provided; the lower end of the push rod is connected with the foot pad; the outer conduit is connected with the upper liquid chamber and the lower liquid chamber, and a check valve is arranged in the middle. The magnetorheological landing mechanism with repeatable buffering of the present invention has the advantages of simple structure, no external energy source, and repeated use.

The invention discloses an in-series disc spring large deformation energy consumption beam column node, which comprises an assembly type column, an assembly type beam and a disc spring combination type damper, wherein the disc spring combination type damper consists of an energy consumption rod, a disc spring set, an internal thread sleeve, an outer sleeve, a sliding guide rod and an extrusion nut, one end of the disc spring combination type damper is fixed on the fixed plate of a surface of the assembly type beam, and the other end passes through the flange plate of the assembly type column and presses tightly the flange plate. By adjusting the pressure of the extrusion nut, tensile deformation generated by the two ends of the disc spring combination type damper can be fully supplied by the energy consumption rod under the action of small and moderate earthquakes, the other part is supplied by the compressive deformation of the disc spring set, so that the disc spring combination typedamper has better deformability, and the fatigue performance of the disc spring combination type damper is conducive to being improved.

The invention discloses an unbonded post-tensioned pre-stressed assembly type pier connecting structure and a construction method thereof. The unbonded post-tensioned pre-stressed assembly type pier connecting structure comprises at least one capping beam, at least one bearing platform, at least one pier column and at least one pre-stressed tensioning mechanism, wherein the upper end of the pier column is provided with a plurality of upper pier column longitudinal rib sections extending out, the lower end of the pier column is provided with a plurality of lower pier column longitudinal rib sections extending out, the capping beam is provided with a plurality of capping beam longitudinal rib sections extending out, and the bearing platform is provided with a plurality of bearing platform longitudinal rib sections extending out; the bearing platform and the capping beam are respectively pre-embedded with a grouting pipe, the plurality of the upper pier column longitudinal rib sections, the plurality of the lower pier column longitudinal rib sections, the plurality of the capping beam longitudinal rib sections and the plurality of the bearing platform longitudinal rib sections are allsleeved with the grouting pipe, the plurality of the upper pier column longitudinal rib sections and the plurality of the lower pier column longitudinal rib sections are respectively connected with the plurality of the capping beam longitudinal rib sections and the plurality of the bearing platform longitudinal rib sections through ultra-high performance concrete (UHPC) poured in the grouting pipe so as to enable the at least one capping beam, the at least one bearing platform and the at least one pier column to be integrated, and the pier column and the capping beam have self-resetting capability through tensioning of the pre-stressed tensioning mechanism.