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

The invention relates to a horizontal seamed energy dissipation prestressed shear wall structure, belonging to the technical fields of shock resistance and shock absorption in structure engineering. The shear wall structure comprises a reinforced concrete wall, an energy dissipation device, connecting steel plates, horizontal seams, prestressed reforcing steel, high-strength bolts, anchoring accessories and a foundation. The horizontal seams are arranged in the shear wall structure, and a connecting member or device is used for enhancing the energy dissipation capacity; and simultaneously, vertical high-strength prestressed reforcing steel are arranged in the shear wall to strengthen the connection performance of the structure and improve the rigidity of the structure. Thus, the horizontal seamed energy dissipation prestressed shear wall structure is suitable for industrial and civil buildings in the region where the seismic fortification intensity is higher than 6. The invention has the advantages of simple sturcture, low cost of required materials, good hysteretic energy dissipation capacity, good self-resetting characteristic, small residual structural deformation and no damage.

The invention provides a double-restraint self-reset buckling-proof energy-dissipation support. The support consists of a novel disc spring self-reset assembly and a buckling-proof support assembly, wherein the self-reset assembly has a friction energy dissipation function, great self-reset performance under the action of medium and small earthquakes and an excellent energy dissipation capacity; the buckling-proof support assembly consists of a core plate, a limiting plate, constraint channel steel and a bolt, wherein the core plate adopts a linear section-variable form, and carbon fiber clothis stuck to the core plate locally to form a local reinforcing section in order to achieve the effect of a preset necking section. By fully utilizing the energy dissipation performance of the core plate in a necking stage of the steel, the accumulated energy dissipation capacity and hysteresis performance of the core plate are improved, and the performance of the core plate shows that a multi-wave buckling phenomenon of the support core plate is obviously inhibited and the accumulated ductility of the core plate is obviously improved. The double-restraint self-reset buckling-proof energy-dissipation support has good self-reset performance and great energy-dissipation performance and is simple in structure, convenient to install and easy to popularize.

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 discloses a Cu-Al-Mn shape memory alloy damping device for a precise instrument and a manufacturing method of the Cu-Al-Mn shape memory alloy damping device. The damping device comprises a workbench, a damping assembly and a base. The damping assembly connects the workbench with the base. The damping assembly is composed of a plurality of columnar crystal tissue Cu-Al-Mn shape memory alloy plates with high anisotropism. The Cu-Al-Mn shape memory alloy damping device has the advantages that the damping device has the functional anisotropism, in other words, 10% or more high recovery strain can be provided in the vertical direction, the damping performance is superior, and good energy absorbing and damping functions are achieved; 7% or more high recovery strain in the horizontal direction can be provided, the energy absorbing and damping functions are achieved, and due to higher strength and rigidity of plates in the thickness direction, the damping device has good inclination resisting and shaking resisting functions, and the precise instrument can be kept stable in the using, or moving or transporting process.

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 discloses a seismic isolation bearing with multistage self-reset capacity. The seismic isolation bearing comprises an upper connecting plate (1) and a lower connecting plate (2), wherein the upper connecting plate (1) and the lower connecting plate (2) are correspondingly fixed on an upper structure and a foundation structure respectively; a high-damping rubber body (3) is fixed below the upper connecting plate (1); a sliding plate (6) is fixed below the high-damping rubber body (3) and can slide along an upper surface of a fixed plate (7) fixed on the lower connecting plate (2). According to the seismic isolation bearing with the multistage self-reset capacity, a high-damping rubber seismic isolation bearing and a friction-sliding seismic isolation bearing are connected in series to form a novel seismic isolation system, seismic isolation performance of the seismic isolation system can be sufficiently exerted under the condition of earthquakes with different levels of seismic intensity, and safety of the upper structure under the condition of earthquakes is protected; the seismic isolation bearing is safe, reliable and convenient to mount and maintain, can be effectively applicable to various construction projects and is suitable for being used in actual projects.

The invention discloses a liquid-bag type shock isolator for shock isolation of cultural relics and showcases and belongs to the field of cultural relic shock isolation. The liquid-bag type shock isolator comprises a top steel plate, a rubber bag, a bottom steel plate, an oil filling hole, silicon oil filled into the rubber bag, a groove and a raised plate. The top steel plate and the bottom steel plate are connected through the rubber bag which is filled with the silicon oil. The silicon oil is filled through the oil filling hole. The groove is formed in the top steel plate, and the raised plate is arranged on the bottom steel plate. The size of the rubber bag is equal to those of the groove and the raised plate. Different application requirements can be met by regulating shape and size of the top steel plate and the bottom steel plate, the thickness of the rubber bag and the viscosity of the silicon oil. The liquid-bag shock isolator is simple in structure, small in thickness and easy to be standardized and has both horizontal shock isolation capacity and vertical shock isolation capacity.

The invention discloses a shock absorption and shock insulation support for a building. The shock absorption and shock insulation support comprises an upper connecting plate, rubber bands, a pluralityof middle partition plates, lead core columns, a friction body and a lower connecting plate. The lead core columns are vertically arranged, the upper connecting plate is arranged at the upper ends ofthe lead core columns, the lower connecting plate is arranged at the lower ends of the lead core columns, and the friction body is arranged between the lower connecting plate and the lead core columns. The middle partition plates are fixedly arranged on column bodies of the lead core columns at equal intervals in a sleeving mode. The rubber bands are wound from inside to outside on the lead corecolumns between adjacent middle partition plates. The shock absorption and shock insulation support ensures that under the action of earthquake, the friction between the high damping friction body onthe lower portion and the lead core columns consumes energy and provides isolation performance for an upper structure, and under the action of gravity or human, the friction body has a good self-resetability.

The invention relates to a fabricated suspension floor system self-resetting building structure and a construction method. Prefabricated steel beams (2) and steel box type section ring beams (5) are aligned to be fixedly connected through connecting steel plates (11), the steel box type section ring beams (5) are connected with steel multi-functional connecting members (3) between precast reinforced concrete columns (1) through steel suspenders (4), composite floors can be installed on the prefabricated steel beams (2), the steel box type section ring beams (5), the prefabricated steel beams (2) and the composite floors jointly form floor systems, and vertical loads borne by the floor systems are transferred to the steel multi-functional connecting members (3) between the precast reinforced concrete columns (1) through the steel suspenders (4). The method comprises the steps that 1, bottom-layer columns are installed; 2, the steel box type section ring beams on the second floor are temporarily fixed; 3, the floor system of the second floor is installed; 4, the steel multi-functional connecting members and supporting rods are installed; 5 the step 2 to the step 4 are repeatedly executed to complete construction of all standard layers; 6, construction of the floor on the top layer is completed; and (7) all layers of floor systems are installed in place.

The invention discloses a self-resetting repairable high-performance prefabricated RC column. The self-resetting repairable high-performance prefabricated RC column comprises a replacement area, a transition area is arranged above the replacement area, a common concrete area is arranged above the transition area, the transition area and the replacement area are both formed by pouring ultra-high performance concrete (UHPC), and the common concrete area is formed by pouring common concrete; steel strands penetrating through the whole prefabricated RC column from top to bottom are arranged at the four corners of the prefabricated RC column in the longitudinal direction; the middle part is the prestressed steel strands penetrating through the whole prefabricated RC column from top to bottom; and common steel bars penetrating through the whole prefabricated RC column from top to bottom are arranged in the middle of the four faces of the prefabricated RC column in the longitudinal direction, the common steel bars in the replacement area are replaced by energy-consuming steel bars, the common steel bars and the energy-consuming steel bars are connected through threaded sleeves, and UHPC materials are poured on peripheries of the steel bars for wrapping. The RC column has low residual displacement and good self-resetting capacity under the action of low frequency cyclic loading, the energy-consuming steel bars in the replacement area can be replaced after being damaged, and the RC column can be conveniently repaired after an earthquake.

The invention provides an X-shaped soft steel energy dissipation device with an assembled self-resetting combined disc spring, and belongs to the technical field of civil engineering disaster prevention and shock absorption. An X-shaped soft steel damper (5) is fixed to the inner side of an outer sleeve (4) and the outer side of an inner sleeve (3) through high-strength bolts (10). The combined disc spring (6) is arranged between the inner sleeve (3) and the outer sleeve (4) in a penetrating and sleeving mode. The inner sleeve (3) and the outer sleeve (4) slide relatively, then an outer stop block (7) and an inner stop block (8) are driven to push a baffle (9) to slide oppositely, and finally the combined disc spring (6) is extruded, so that the combined disc spring (6) is always in a pressed state no matter whether the device is pulled or pressed, and when the inner sleeve (3) and the outer sleeve (4) slide relatively, the X-shaped soft steel damper (5) is also driven to deform. During an earthquake, the X-shaped soft steel damper (5) can effectively dissipate earthquake energy, and after the earthquake, a self-resetting part can help the structure to restore the original state, and residual deformation is eliminated.

The invention discloses an energy consumption connecting device for an assembled shear wall. The energy consumption connecting device for the assembled shear wall comprises energy consumption connecting systems and a prestressing system, wherein the energy consumption connecting systems are symmetrically arranged at bottom corners of two ends of prefabricated wallboards; the upper ends of the energy consumption connecting systems are connected with the upper prefabricated wallboard, and the lower ends of the energy consumption connecting systems are connected with the lower prefabricated wallboard; the prestressing system is arranged on the central axis of the prefabricated wallboards; and the upper prefabricated wallboard and the lower prefabricated wallboard are connected into a whole through the prestressing system. According to the energy consumption connecting device for the assembled shear wall, the upper and lower prefabricated wallboards are connected into a whole through the energy consumption connecting systems and the prestressing system, and generate swing deformation cooperatively under the action of earthquake; the prestressing system is arranged on the central axis of the prefabricated wallboards, and a wall body can be controlled to swing by utilizing prestress and wall body dead weight; the energy consumption connecting systems are arranged at the highly stressed tension-compression corner parts of the wall body, reliable energy consumption connection is provided by the energy consumption connecting systems, brittle crushing damage to the concrete corner parts of the wall body is avoided, and the applicable seismic grade range of the structure is expanded.

The invention provides a self-resetting guide plate structure suitable for a seamless bridge and a method thereof. The self-resetting guide plate structure comprises a bridge abutment, a main beam lapped on the bridge abutment and a guide plate fixedly connected with the main beam, the guide plate is L-shaped; the guide plate comprises a horizontal plate fixedly connected with the main beam and avertical plate extending downwards from one end, deviating from the main beam, of the horizontal plate; an expanded foundation is fixed at the lower end of the vertical plate; unbonded prestressed tendons are arranged in the vertical plates; the upper ends of the unbonded prestressed tendons are anchored to the tops of the guide plate, the lower ends of the unbonded prestressed tendons are anchored to the bottom of the expanded foundation. By means of the flexibility of the vertical plate of the L-shaped guide plate, the self-resetting capacity and the anti-overturning capacity of the guide plate under the earthquake action are provided through the unbonded prestressed tendons.

The invention discloses a local UHPC (Ultra High Performance Concrete) recoverable function self-resetting prefabricated bidirectional coupled high-speed rail pier which comprises a bearing platform and a cover beam supported above the bearing platform through a vertical supporting structure, and the cover beam is a prefabricated part; the vertical supporting structure comprises a prefabricated pier bottom section, a prefabricated pier-coupling beam section and an unbonded prestressed steel strand; the prefabricated pier bottom sections are fixed on the bearing platform in a matrix arrangement manner; a prefabricated pier-coupling beam section is arranged on the top surface of the prefabricated pier bottom section; the prefabricated pier-coupling beam section comprises a prefabricated pier section and a prefabricated coupling beam; a feasible structural form is provided for applying a prefabrication construction technology to the high-speed rail bridge pier, by means of the structural form, the structural rigidity requirement and the rapid construction requirement can be both considered, the shear state of the bridge pier is improved, it can be guaranteed that the bridge pier has good deformation capacity under the earthquake action, and only replaceable damage elements are damaged; the prefabricated high-speed rail pier is further developed into a post-earthquake function recoverable structure, and the requirement for toughness and earthquake resistance is met.

The invention relates to a prestress self-resetting reinforced concrete dry type connecting beam-column joint. The joint comprises a reinforced concrete column, a reinforced concrete beam, a hidden bracket, a prestress rib, an anchorage device, angle steel, a bolt and an embedded bolt sleeve. The prestress self-resetting reinforced concrete dry type connecting beam-column joint has the beneficialeffects that the joint has the remarkable advantages of energy conservation, environmental protection, high field construction efficiency and the like, the shear capacity and residual deformation resistance of a reinforced concrete structure can be effectively improved, the joint has good self-resetting capacity after an earthquake, and the purposes of structural shock insulation and effective prolonging of the service life of a building are achieved.