33results about How to "Good self-resetting ability" patented technology

The invention discloses a spring-type self-resetting beam-column node, which comprises a steel frame column, a cantilever short beam, a connecting beam, an energy dissipation damper, a connecting device and a recovery device; one end of the cantilever short beam is welded to the steel frame column, and the cantilever short beam The other end of the beam is connected to the connecting beam through a connecting device; transverse stiffening ribs and longitudinal stiffening ribs are arranged on the web of the cantilever short beam and the connecting beam, and a recovery device is arranged between the transverse stiffening rib and the cantilever short beam. The front and rear sides of the short beam and connecting beam are equipped with energy dissipation dampers, transverse stiffeners, longitudinal stiffeners and recovery devices; the energy dissipation dampers include upper connecting plates, lower connecting plates and mild steel energy dissipating steel sheets, The inside of the upper connecting plate is provided with through holes, the lower surface of the upper connecting plate and the upper surface of the transverse plate of the lower connecting plate are provided with a number of grooves, and a number of mild steel energy-dissipating steel sheets are inserted in the grooves. The steel structure of the invention has strong energy dissipation performance and strong self-resetting ability, and the connecting parts are easy to disassemble and repair.

The utility model relates to a liquid bladder type shock isolator used for shock isolation of cultural relics and showcases, which can be used for shock isolation of exhibited cultural relics or showcases, and belongs to the field of shock isolation of cultural relics. Liquid bladder type shock isolator, including a top steel plate, a rubber bladder, a bottom steel plate, an oil injection hole, silicone oil injected into the rubber bladder, a groove, and a raised plate; the top steel plate and the bottom steel plate are connected by a rubber bladder; the rubber bladder is filled with silicone oil Silicone oil is poured through the oil injection hole; the top steel plate is provided with a groove; the bottom steel plate is provided with a convex plate; the size of the rubber bladder is consistent with the size of the groove and the convex plate. The present invention can achieve different use requirements by adjusting the shape and size of the upper and lower steel plates, the thickness of the rubber bladder, and the viscosity of the silicone oil. The utility model has the advantages of simple structure, low height, easy realization of standardization, not only horizontal seismic isolation capability but also vertical seismic isolation capability.

The invention discloses a vertical prestressed anchorage system. The vertical prestressed anchorage system comprises an embedded part, a lower end anchoring unit and an upper end anchoring unit, wherein the embedded part comprises an upper anchor backing plate, an embedded pipeline or a reserved forming hole, a lower anchor backing plate and a grouting cap; the lower end anchoring unit is a whole formed by making one end of a prestressed tendon pass through an anchor plate at a fixed end and anchoring the one end of the prestressed tendon by an extruded sleeve and the anchor plate at the fixed end; the anchor plate at the fixed end is a cuboid-shaped anchor plate; the upper end anchoring unit consists of a tension end anchor plate which is placed on the upper anchor backing plate and is used for anchoring the other end of the prestressed tendon and an upper end anchorage device; the tension end anchor plate is a cuboid-shaped anchor plate; the cross section of the embedded pipeline is rectangular; through holes of the upper anchor plate and the lower anchor plate are rectangular; the criterion of the sizes of the through holes is that the lower anchor unit can pass through the through hole; and the end surfaces of the upper anchor backing plate and the lower anchor backing plate are provided with rectangular groove notches vertical to the rectangular through holes. The system is simple in structure, is stressed reasonably, and has simple and convenient construction method (manufacture and installation processes).

The invention discloses a self-resetting viscous damper based on a combined spring, which includes a viscous damping energy-consuming device, a spring return device and a force transmission device. The force device includes an external force transmission component and an internal force transmission component; the external force transmission component includes a cylinder, the viscous damping energy dissipation device and the spring return device are installed in the cylinder, the internal force transmission component is a guide rod, and the guide rod is along the cylinder body. Arranged in the axial direction, the piston in the viscous damping energy dissipation device is fixedly connected to the guide rod. The spring return device includes a return spring and two pressure bearing plates arranged at both ends of the return spring in the axial direction. The return spring and the pressure bearing plate All are sleeved on the periphery of the guide rod, and can slide relative to the guide rod. The invention has excellent self-resetting ability and controllability, can consume energy stably under high and low frequency excitation, has overload protection characteristics, symmetrical tension and compression performance, convenient assembly, and easy disassembly and maintenance.

The invention discloses a novel earthquake damage control system for a thin-wall hollow pier. The novel earthquake damage control system comprises a pier base, a thin-wall hollow pier, high-tenacity fiber-enhanced cement-based composite material expanded sections, an unbonded prestressed tendon and steel energy consumption elements, wherein the thin-wall hollow pier is arranged on the upper end surface of the pier base, so that the torsional strength and the energy-dissipating capacity of the thin-wall pier are improved. The high-tenacity fiber-enhanced cement-based composite material expanded sections are arranged on the inner side and the outer side of the lower part of thin-wall hollow pier; a series of steel energy consumption elements are arranged in the thin-wall hollow pier along the pier height; the lower part of the unbonded prestressed tendon is anchored on the pier base; and the upper part of the unbonded prestressed tendon is anchored at the center of the first steel energy consumption element from bottom to top. By virtue of the unbonded prestressed tendon, the self-resetting capacity of the pier after the earthquake is provided; and the crack width of the pier after the earthquake is reduced. By virtue of the high-tenacity fiber-enhanced cement-based composite material expanded sections, the axis-compression ratio of the bottom section of the thin-wall hollow pier is reduced; the shear-bearing capacity and the anti-bending capacity of the thin-wall hollow pier are increased; and the steel energy consumption elements can be arranged as rapid exchange components, so that the repairability after the earthquake is increased.

The invention relates to a two-way swinging cylinder earthquake-resistance structure, belonging to the technical field of structural engineering earthquake resistance. The two-way swinging cylinder earthquake-resistance structure comprises a reinforced concrete cylinder wall, an oblique prestretched cable, an energy consumer, high-strength prestressed tendons, anchoring accessories and a foundation. Because the oblique prestretched cable is arranged in a concrete rectangular cylinder and connected with the energy consumer, the lateral rigidity of the structure is ensured, and the energy consuming capacity and the self-resetting capacity of the structure are enhanced. Because the vertical high-strength prestressed tendons are arranged in the concrete rectangular cylinder to strengthen the connecting performance of the structure and the foundation and further improve the rigidity of the structure, the two-way swinging cylinder earthquake-resistance structure is suitable for the medium and high-rise industrial and civil buildings with the earthquake-resistance fortification intensity of more than 6 degrees. The two-way swinging cylinder earthquake-resistance structure is simple and convenient to construct, has good energy consuming capacity and can resist multi-dimensional earthquake. In addition, the two-way swinging cylinder earthquake-resistance structure has good self-resetting characteristic and small residual deformation and is easy to repair after being slightly damaged.

The invention discloses a quick repair method for a reinforced concrete bridge pier after an earthquake, which belongs to the field of civil engineering. It is composed of caps, piers, high-fluidity early-strength cement mortar, stainless steel casing, energy-dissipating angle steel, SMA combined ring spring, horizontal screw, vertical screw, high-strength bolts, longitudinal reinforcement, and PTFE film. The idea of ​​this method is to change the pier consolidated at the bottom of the original pier into a swinging pier. When repairing, first remove the damaged concrete, and cut off the longitudinal reinforcement in the plastic hinge area at the bottom of the pier. The plastic hinge area is outsourced with stainless steel sleeves and filled with high-fluidity early-strength cement mortar in the sleeves. The energy-dissipating angle steel and the SMA combined ring spring form the external energy-dissipating system. The construction operation of this method is simple and the required time is short, and the repaired bridge pier becomes a swing system, which avoids re-damage of the repaired bridge pier under strong earthquakes. The stainless steel casing significantly improved the durability of the repaired piers. The external energy consumption system has a self-resetting function, which avoids the damage of the angle steel and is easy to repair.

The invention discloses an easily-reset high-energy consumption buckling-restrained brace, so as to solve the problems of large residual deformation and small energy consumption of a single material buckling-resistant brace in the prior art. The effects that most of the energy in earthquake can be dissipated and most of the residual deformation after earthquake can be restored can be achieved. Inthe technical scheme, the easily-reset high-energy consumption buckling-restrained brace comprises a self-reset energy consumption mechanism and a shell mechanism, wherein the self-reset energy consumption mechanism can slide in the shell mechanism under effects of an external pulling force or pressure; the self-reset energy consumption mechanism comprises two core plates of different materials, and backing plates are arranged between the end parts of the two core plates; the two core plates cooperate to reduce horizontal displacement so as to reduce the acceleration of displacement between layers during the earthquake; and the shell mechanism comprises multiple sleeves connected to the middle parts of the core plates and form restraints towards the core plates.