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 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 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 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 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 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.