35results about How to "Strong self-resetting ability" patented technology

The invention discloses a self-resetting steel framework comprising a steel framework column, a steel framework beam, a self-resetting column foot and a self-resetting beam-column friction energy consumption joint. One end of the self-resetting column foot is connected with a foundation, the other end of the self-resetting column foot is connected with one end of the steel framework column, and the other end of the steel framework column is connected with the steel framework beam through the self-resetting beam-column friction energy consumption joint; and the connecting position of the steel framework beam and the steel framework column can make horizontal displacement when bearing the external force effect. According to the self-resetting steel framework, earthquake energy can be dissipated through the self-resetting column foot and the self-resetting beam-column friction energy consumption joint, the energy consumption performance of the overall structure is improved significantly, self-resetting force can be provided, and the self-resetting steel framework can return to the initial state when an earthquake occurs. The self-resetting steel framework is convenient to connect and easy to construct and has high energy consumption capacity and self-resetting capacity.

The invention relates to a three-way nonlinear hybrid energy dissipation self-resetting damper. The three-way nonlinear hybrid energy dissipation self-resetting damper comprises a damper cavity body,a particle swarm, a buffer material, viscous liquid, variable stiffness springs and a fixed structure. The damper cavity body is composed of an inner cuboidal cavity and an outer cuboidal cavity. Theinner portion of the inner cuboidal cavity is paved with a layer of particle swarm, and the buffer material is pasted on the inner wall of the inner cuboidal cavity. The outer wall of the inner cuboidal cavity and the inner wall of the outer cuboidal cavity are connected by the variable stiffness springs, and the viscous liquid is arranged between the inner cuboidal cavity and the outer cuboidal cavity in a filling mode. The four variable stiffness springs are uniformly arranged at the bottom of the outer cuboidal cavity and are connected with a basic structure. The bottom of the outer cuboidal cavity is connected with the fixed structure in the horizontal direction through the two variable stiffness springs which are arranged in an orthogonal mode. By reasonably setting the stiffness of the nonlinear variable stiffness springs made from shape memory alloys, the damper can provide different stiffness in the horizontal, orthogonal and vertical directions to tune the frequency of the structure under the action of wind / earthquakes, and the vibration energy of the structure is dissipated through viscous energy-dissipation, spring energy-dissipation, friction and collision of the particle swarm and the like.

The invention relates to a variable-rigidity hydraulic three-dimensional shock isolation device and method. The variable-rigidity hydraulic three-dimensional shock isolation device comprises an upper vertical shock isolation system, a lower overlapped rubber support, a pressure reducing cylinder, a pressure increasing cylinder and a connecting component. The vertical shock isolation system comprises a vertical shock isolator upper connecting plate, a vertical guide rail, a main cylinder piston rod, a main cylinder limiting and guiding sleeve, a main cylinder bottom piston series-connection pressure spring, a main cylinder bottom piston series-connection tension spring, a vertical shock isolator lower connecting plate and a main cylinder top sealing plate. The overlapped rubber support comprises an upper connecting plate, a steel plate layer, a rubber layer and an overlapped rubber support lower connecting plate. The pressure reducing cylinder comprises a pressure reducing cylinder piston series-connection pressure spring, a pressure reducing cylinder buffering mat layer, a pressure reducing cylinder guiding sleeve, a pressure reducing cylinder piston rod, a pressure reducing cylinder supporting ring and a pressure reducing cylinder top sealing plate. The pressure increasing cylinder comprises a pressure increasing cylinder piston series-connection pressure spring, a pressure increasing cylinder buffer mat layer, a pressure increasing cylinder guiding sleeve, a pressure increasing cylinder piston rod, a pressure increasing cylinder supporting ring and a pressure increasing cylinder top sealing plate. Vertical variable-rigidity control is achieved while vertical bearing force is guaranteed, and limiting and pull-resisting measures are adopted.

The invention discloses a novel self-reset friction damper, and belongs to the technical field of energy dissipation and shock absorption of civil engineering structures. The structure of the damper is that the two sides of an outer covering steel plate concrete connecting section are respectively provided with a profile steel connecting section; anchoring steel bars are welded to the outer sides of the profile steel connecting sections, and are poured in a reinforced concrete main structure simultaneously; the bottom ends of the outer covering steel plate concrete connecting sections and the bottom ends of the profile steel connecting sections are connected through friction energy dissipation plates; the outer covering steel plate concrete connecting sections are connected with the profile steel connecting section on one side or the profile steel connecting sections on the two sides through a plurality of prestressed cables. When the main structure deforms under seismic excitation, the prestressed cables anchored on the outer sides of profile steel are extended, and self-reset tension force is provided; meanwhile, the friction energy dissipation plates connected between the profile steel and the concrete connecting sections deform relatively, seismic energy is dissipated, and energy dissipation and shock absorption are achieved.

The invention belongs to the technical field of civil engineering and provides a self-resetting displacement magnification type shape memory alloy damper. By the self-resetting displacement magnification type shape memory alloy damper, small displacement generated at a beam-column joint or between structural layers of a building structure under the action of an external load can be magnified according to requirements, and the magnified displacement is limited in order to give full play to energy dissipation capacity of a shape memory alloy material in the damper, so that favorable energy dissipation effects can be achieved; namely, when the small displacement is generated at the beam-column joint or between the structural layers of the building structure, the displacement is magnified through a lever mechanism and then transferred to shape memory alloy wires, and the ultra-elastic shape memory alloy material dissipates energy by tensile deformation. The displacement magnification can be adjusted according to practical conditions of building structures of building components, simplicity in mounting is realized, and the shape memory alloy damper is a flexible and efficient energy dissipation element.

The invention provides a steel structure self-reset beam and column joint connection device, which comprises a steel frame column, a steel frame beam, a connecting assembly, a phased energy-consumingdamper, flange connecting plates, a web connecting plate, prestressed tendons and beam transverse reinforcement ribs. The side face of the connecting assembly is welded to the second side face of thesteel frame column, a first longitudinal connecting plate and a fourth longitudinal connecting plate of the connecting assembly are fixed connected with the two side faces of the steel frame beam through the flange connecting plates correspondingly, the short edge of an L-shaped upper connecting plate of the phased energy-consuming damper is fixedly connected with the first beam transverse reinforcement rib, a folding face lower connecting plate of the phased energy-consuming damper is fixedly connected with a second longitudinal connecting plate of the connecting assembly, a transverse connecting plate of the connecting assembly and the steel frame beam are fixedly connected through the web connecting plate, the first ends of the prestressed tendons are fixedly connected with the first side face of the steel frame column, and the second ends of the prestressed tendons penetrate through the second side face of the steel frame column to be fixedly connected with the first beam transverse reinforcement rib and the second beam transverse reinforcement rib. According to a joint method, connecting is convenient, and very high energy consumption and self-reset capability is achieved.

The invention discloses a prefabricated assembly type self-resetting frame integral structure which comprises foundations, steel columns, cross beams, floor slabs, prefabricated filling wallboards andU-shaped clamps. The steel columns and the foundations form self-resetting column base structures; the steel columns and the cross beams connected with two sides thereof form self-resetting joint structures; when an earthquake comes, the self-resetting joint structures located at the beam-column joints dissipate earthquake energy firstly, and the horizontal bearing capacity of the structure is improved; secondly, the floor slabs and the prefabricated filling wallboards are not in direct contact with the steel columns; certain distances are reserved between the prefabricated filling wallboardsand the bottoms of the U-shaped clamps on the upper portion and the two sides, when the overall structure has the tendency of lateral overturning, the floor slabs and the prefabricated filling wallboards keep a normal stable state, it is guaranteed that the gravity center of the overall structure does not deviate substantially along with the earthquake action, and the overall structure has the self-resetting capacity after an earthquake. And finally, the self-resetting joint structures and the self-resetting column base structures play a role to jointly ensure that joints and column bases arenot greatly damaged, so that the energy consumption and the self-resetting function of the structure are realized.

The invention discloses a spring type self-resetting beam column joint. The spring type self-resetting beam column joint comprises a steel frame column, a cantilever short beam, a connecting beam, an energy consumption damper, a connecting device and a restoring device. One end of the cantilever short beam is welded with the steel frame column, and the other end of the cantilever short beam is connected with the connecting beam through a connecting device; transverse stiffening rib plates and longitudinal stiffening rib plates are arranged on webs of the cantilever short beam and webs of the connecting beam, recovery devices are arranged between the transverse stiffening rib plates and the cantilever short beam, and energy dissipation dampers, the transverse stiffening rib plates, the longitudinal stiffening rib plates and the recovery devices are arranged on the front side and the rear side of the cantilever short beam and the front side and the rear side of the connecting beam. The energy dissipation dampers comprise upper connecting plates, lower connecting plates and mild steel energy dissipation steel sheets, via holes are formed in the inner sides of the upper connecting plates, a plurality of grooves are formed in the lower surfaces of the upper connecting plates and the upper surface of a transverse plate of the lower connecting plate, and the multiple mild steel energy dissipation steel sheets are inserted into the grooves. The steel structure is high in energy dissipation performance and self-resetting capacity, and connecting parts are convenient to disassemble and repair.

The invention relates to the technical field of anti-seismic safety, in particular to a three-dimensional gear type self-resetting energy dissipation and seismic isolation support. The support comprises an upper limiting plate, an upper rubber layer, an upper support plate, a toothed ellipsoid rotating body, a lower support plate, a lower rubber layer and a lower limiting plate in sequence from top to bottom. The upper support and the lower support are connected through a plurality of shear keys, and rubber sealing rings are arranged on the outer sides of the shear keys. The upper limiting plate is connected with the main beam through studs, and the lower limiting plate is connected with a cover beam through studs. Through the meshing effect of the gears, the ellipsoid with the gear in themiddle shifts under the strong shock effect, meanwhile, the stress area is not changed, stress is uniform, the overturning danger is reduced, the rotating angle of the ellipsoid rotating body is limited through limiting check blocks on the two sides of a gear ring, and the phenomenon that different components are disengaged from one another is effectively avoided.

The invention provides a self-resetting energy dissipating steel column base joint. The column base joint includes a steel column, yield energy dissipating bodies, a self-resetting system and a concrete foundation beam. A prestressed rib connection plate is welded on the steel column. Oppositely-penetrating connection holes I are formed in the surface of the prestressed rib connection plate. A steel plate is buried on the top of the concrete foundation beam. Several steel casings are embedded in a beam body of the concrete foundation beam. Oppositely-penetrating connection holes II are formedin the positions, corresponding to the steel casings, of the steel plate on the top of the foundation beam. Prestressed ribs are anchored at the top of the prestressed rib connection plate and the bottom of the concrete foundation beam. The peripheral walls of the four sides of the steel column are each provided with one yield energy dissipating body. The column base joint can effectively reduce or even eliminate the problem of column base damage under the earthquake action. Self-resetting is achieved by prestressed wires, the residual deformation of the structure is effectively reduced, the self-resetting ability is high, and the energy dissipating bodies can also be replaced.

The invention discloses an assembled self-resetting energy dissipation shear wall which comprises a foundation, a plurality of concrete filled steel tubular columns, dampers, high strength anchor rodsand nuts. A steel plate is pre-buried in the foundation; the concrete filled steel tubular columns are arranged in a spaced manner on the top surface of the foundation, and each concrete filled steeltubular column is composed of multiple segments; the concrete filled steel tubular columns are provided with radial protruding cantilever slabs on the side wall of the bottom close to the top surfaceof the foundation; the dampers are fixed between adjacent two concrete filled steel tubular columns; the top end of the high strength anchor rods penetrate the cantilever slabs and are provided withdisc spring groups in a sleeving manner, and the bottom ends of the high strength anchor rods are inserted into the foundation and penetrate the pre-buried steel plate; and the nuts are separately fastened to two ends of the high strength anchor rods. The assembled self-resetting energy dissipation shear wall is simple in structure, flexible in design and convenient to construct. The repairing orreinforcing cost of the structure after an earthquake can be reduced effectively as a result of the self-resetting ability of the assembled self-resetting energy dissipation shear wall, so that the recoverable capability of the structure after earthquake in use function is improved integrally.

The invention discloses an assembly type self-reset annular metal damper comprising a steel plate combined member, a piston member, a box-shaped member, a bottom plate, a fastening piece, an elastic piece and energy dissipation members; the steel plate combined member comprises a flange plate and a web plate; a plurality of energy dissipation members are arranged, and the energy dissipation member comprises an annular inner plate, an annular outer plate, connecting base plates and connecting pieces; the annular inner plate is arranged in the annular outer plate in a sleeved mode; a plurality of connecting base plates are clamped between the side plates on the two sides of the annular inner plate and the annular outer plate respectively; a plurality of connecting pieces penetrate through the side plates of the annular inner plate, the connecting base plates and the side plates of the annular outer plate and are respectively fixedly connected with the side plates of the piston member and the box-shaped member; and the designed yield displacement of the annular inner plate is smaller than the designed yield displacement of the annular outer plate. The damper provided by the invention has the function of staged yield energy dissipation, and the energy dissipation is good; and meanwhile, the members of the damper can be disassembled and replaced timely after fatigue damage to the members happens, and the self-reset capability is high.

The invention belongs to the field of bridge engineering, and particularly relates to a semi-assembled composite bridge pier and a construction method thereof. The semi-assembled composite bridge piercomprises a prefabricated bearing platform and a plurality of prefabricated bridge pier segments, wherein the contact surfaces between the prefabricated bridge pier segments are connected by adoptingultra-high performance mortar; the ultra-high performance mortar has better corrosion resistance than mortar used in a traditional prefabricated assembly bridge pier joint; and the ultra-high-performance concrete inside a hollow steel tube of the bridge pier penetrates the entire bridge pier structure, so that the composite bridge pier has relatively strong deformation ability, good ductility andstrong self-resetting ability, and the residual deformation of the bridge pier under the action of earthquake can be reduced. According to the technical scheme, the semi-assembled composite bridge pier is convenient and fast to construct and has relatively high construction degree of safety.

The invention provides a prefabricated assembly type self-restoration frame structure and belongs to the field of aseismic structure systems. The prefabricated assembly type self-restoration frame structure is mainly composed of at least two prefabricated modules, the height of each prefabricated module is 1-3 floor high, wherein the prefabricated module comprises beams and pillars, and the bottom-layer prefabricated module is connected with foundations through high-strength bolts and springs; dampers are installed between the bottom-layer prefabricated module and the foundations, at least one layer of the adjacent prefabricated modules is connected through the high-strength bolts and the springs, dampers are installed between the adjacent prefabricated modules in the same layer, and besides these, the rest prefabricated modules are connected only through the high-strength bolts. The prefabricated assembly type self-restoration frame structure has the advantages that the concept is clear, the construction is convenient, the self-restoration ability is high, meanwhile, the replacement and the repairment of the damaged dampers after shock is facilitated, and the prefabricated assembly type self-restoration frame structure can be widely applied to important architectural structures of high-intensity earthquake zones.

The invention relates to the technical field of energy dissipation of building structures, and discloses a shape memory alloy negative stiffness damping device. The shape memory alloy negative stiffness damping device comprises a sliding block, two first vertical plates, two second vertical plates, shape memory alloy wires, prepressing spring mechanisms and a base, wherein the two first vertical plates are oppositely arranged on the base in a first preset direction; the two second vertical plates are oppositely arranged on the base in a second preset direction; the sliding block is slidably arranged between the two first vertical plates; the two side faces, close to the two first vertical plates, of the sliding block are connected with the corresponding first vertical plates through the shape memory alloy wires respectively; the two side faces, close to the two second vertical plates, of the sliding block are connected with the corresponding second vertical plates through the prepressing spring mechanisms; and the first preset direction is perpendicular to the second preset direction. The shape memory alloy negative stiffness damping device has the following benefits that the shapememory alloy negative stiffness damping device can reduce the additional stiffness generated by a traditional damper to the building structure, the shape memory alloy wires are alternatively tensioned to achieve energy dissipation, and the shape memory alloy negative stiffness damping device can play an effective damping control role.

The invention discloses a pier prefabricated and assemble segment. The pier prefabricated and assemble segment comprises a segment body, a plurality of joints are arranged at the upper end of the segment body, a plurality of joint holes matched with the joints in an adapted and inserted mode are formed in the upper end of the segment body, and reserved common steel bar holes and prestressing steelbundle holes are further formed in the segment body in the longitudinal direction. The invention further discloses a pier including the pier prefabricated and assembled segment and a construction method of the pier. The prefabricated and assembled pier segment is adopted, hoisting, splicing and prestressed post-tensioning can be completed on site, and the prefabricated and assembled pier segmentcan be widely used in alpine or high altitude areas.

The invention discloses an assembled self-resetting X-type metal damper, which comprises a steel plate composite component, a piston component, a box type component, a bottom plate, a fastener, an elastic component, and energy consuming components. The steel plate composite component comprises a flange plate and a web; the plurality of energy consuming components comprise connecting plates and energy consuming plates; panels of the connecting plates are arranged in parallel with a side plate of the piston component and tightly connected with the side plates of the piston component and the boxtype respectively through a plurality of connecting members; a plurality of energy consuming plates are fixed in parallel between the two connecting plates, and the energy consuming plates are X-shaped plates with broader width at both ends and narrow width in the middle, the yielding areas of the X-shaped plates are large, plasticity distribution is uniform, and during energy consumption, each point of the energy consumption plates simultaneously enters plastic deformation. According to the assembled self-resetting X-type metal damper, deformation energy consumption performance of the energyconsuming plates can be adjusted according to different working conditions by means of disassembly and replacement; and at the same time, the damper component can be disassembled and replaced in timeafter fatigue damage of the component, the energy consumption effect is good, and self-resetting capability is high.

The invention discloses a swinging self-resetting damper and a combined supporting type mounting method thereof. The swinging self-resetting damper comprises a vertical cylinder, a steel plate, a butterfly spring, a spring protection cylinder, a horizontal partition plate, a C-shaped damper, a horizontal cross beam, a high-strength pull rod and a fastener. The horizontal partition plate is arranged in the vertical cylinder, and a cover plate is arranged at the upper part of the vertical cylinder; the steel plate is arranged outside the vertical cylinder; one end of the C-shaped damper is connected with the side wall of the steel plate, and the other end of the C-shaped damper is connected with an end plate at the upper portion of the horizontal cross beam; the spring protection cylinder isfixed at the bottom of an end plate at the lower portion of the horizontal cross beam; one end of the high-strength pull rod penetrates through the horizontal partition plate and is fixedly clamped to the top of the horizontal partition plate; the other end of the high-strength pull rod penetrates through the horizontal cross beam and is arranged in the spring protection cylinder; the butterfly spring is arranged at the end, in the spring protection cylinder, of the high-strength pull rod in a sleeving mode and fixed through the fastener; and the vertical cylinder is installed at the bottom of the cross beam. The damper can achieve the energy consumption function through self-swinging, and has the self-resetting capability.

The invention discloses an improved microswitch. The improved microswitch comprises a shell, a button and a connection contact, wherein the button penetrates through the shell. An elastic sheet is arranged at one end of the upper portion of the shell. The elastic sheet presses the button and is arranged above the shell in an inclined mode. The lower end of the elastic sheet extends into the shell and is in contact with a movable sheet. The upper portion of the movable sheet is in contact with the bottom of the button and the lower portion of the movable sheet is connected with a push rod. The tail end of the movable sheet is provided with a conversion contact part. The conversion contact part is used for making contact with the connection contact. The connection contact comprises a normally closed contact and a normally open contact. According to the improved microswitch, when a user touches the elastic sheet, the button moves downwards, the movable sheet below the button is extruded through the button, the conversion contact part changes, an upper hinge shaft makes contact with the normally closed contact, and a lower hinge shaft is far away from the normally open contact through a pull rod and the push rod. The user touches the button indirectly by touching the elastic sheet, a spring is additionally arranged, and therefore the reset capacity is stronger, the button can be connected and disconnected frequently, the structure is simple, and the service life is long.

The invention discloses a large-span swing self-resetting structure. The large-span swing self-resetting structure comprises a concrete foundation, a plurality of bearing columns, a truss roof, a column foot joint structure and a beam end joint structure, wherein the bearing columns and the concrete foundation are vertically arranged, and the truss roof is horizontally arranged at the top ends of the bearing columns; the concrete foundation is provided with limiting grooves for installing the bearing columns, and the positions between the limiting grooves and the bearing columns are filled with column foot flexible cushion layers used for wrapping the bottom ends of the bearing columns; the column foot joint structure comprises column foot cantilever plates, anchor rods and column foot disc spring sets; the column foot cantilever plates are connected to the side wall faces, close to the bottoms, of the bearing columns; a plurality of anchor rods penetrate the column foot cantilever plates to be fixedly connected with the concrete foundation; and the column foot disc spring sets are connected to the anchor rods on the sides, away from the concrete foundation, of the column foot cantilever plates in a sleeving manner. Thus, swing can be conducted during strong earthquakes, forming of plastic hinges at column foot joints is avoided, the structural stability is high, the self-resetting capability is high, the structural damage is small under the strong earthquakes, and the structural residual strain is small after the earthquakes.

The invention discloses a vertical seismic / vibration isolation supporting seat. The vertical seismic / vibration isolation supporting seat comprises four steel cylinders; the first steel cylinder is connected with a lower foundation through lower anchor rods, a lower baffle is fixed to the lower portion inside the first steel cylinder, and a first through hole is formed in the lower baffle; a top plate is fixed to the top edge of the second steel cylinder, a second through hole is formed in the bottom end of the second steel cylinder, and the top plate is connected with an upper structure through upper anchor rods; the second steel cylinder is connected with the first steel cylinder through seismic reduction layers, and a plurality of first belleville spring sets are connected between the second steel cylinder and the lower baffle; the bottom end of the third steel cylinder is fixed to the inner bottom wall of the first steel cylinder, the third steel cylinder penetrates through the first through hole and the second through hole, and an upper baffle is fixed to the top edge of the third steel cylinder, and a plurality of second belleville spring sets are connected between the upper baffle and the second steel cylinder; and the fourth steel cylinder penetrates through the first through hole and is arranged outside the third steel cylinder in a sleeving mode, the top edge of the fourth steel cylinder is fixedly connected with the outer bottom wall of the second steel cylinder, and a third through hole for allowing the third steel cylinder to penetrate through is formed in the bottom of the fourth steel cylinder. The vertical seismic / vibration isolation supporting seat can be effectively applied to various structures for seismic / vibration isolation, and a good seismic / vibration isolation effect is achieved.