14results about How to "Reduced seismic response" patented technology

The invention provides a temperature stress releasing structure for a super-long steel structure building, the super-long steel structure building comprises a frame structure formed by columns and beams, the temperature stress releasing structure comprises a sliding support assembly arranged between the columns and the beams in the length direction of the frame structure, one end of each beam is in sliding fit with the sliding support assembly, and the other end of each beam is in sliding fit with the sliding support assembly. The other end of the beam is connected with an adjacent steel column, and the sliding support assembly comprises a cylinder in sliding fit with the beam. The material can generate the phenomenon of thermal expansion and cold contraction when the temperature changes, at the high temperature, the material expands and shows tension force, the distance between the beam used for releasing the temperature stress and the adjacent steel column becomes small, at the low temperature, the material shrinks and shows shrinkage force, and the distance between the beam used for releasing the temperature stress and the adjacent steel column becomes large. The internal temperature stress of the material is remarkable, the temperature stress is directly released through the sliding support assembly, the effect is remarkable, more convenience is achieved, and additional operation is not needed.

The utility model provides an energy dissipation and shock absorption node for a beam column of a recombined bamboo frame, belongs to the technical field of civil construction structures, and solves the problems that the research on the connection form of a recombined bamboo component is insufficient, tenons are easy to pull out in the traditional tenon-and-mortise connection mode, and splitting damage is easy to occur in the steel filling plate-bolt connection mode. The joint comprises a recombined bamboo column, a recombined bamboo beam and a special-shaped steel filling plate connecting piece, the joint adopts combined connection of mortise and tenon connection and steel filling plate-bolt connection, the relative displacement of the recombined bamboo column and the recombined bamboo beam is effectively limited to be too large, and joint failure caused by tenon pulling is avoided. The middle layer of the special-shaped steel filler plate connecting piece is a recombined bamboo plate, and splitting damage caused by local extrusion is effectively prevented. The outermost layer is the friction energy dissipation composite rubber sheet, under the earthquake action, the bolts slide relatively through the long circular bolt holes to dissipate energy, and meanwhile the friction energy dissipation composite rubber sheet on the outer surface layer of the connecting piece dissipates energy through friction. The steel filling plate connecting piece is arranged to be in a special shape, so that stress distribution is more reasonable.

The present application provides a seismic isolation bearing and power supply system, including: an upper bearing plate, a lower bearing plate, a slider, a fixing device, and a telescopic combination component. When subjected to an earthquake, the seismic isolation bearing first consumes most of the seismic energy through the frictional sliding of the upper bearing plate and the lower bearing plate with the slider. When the vertical seismic action is large, the telescopic combination component increases the vertical stiffness of the bearing through the connection of the vertical connecting rod, and at the same time, through the effective connection with the fixing device, the combined structure can utilize the weight of the fixing device itself and the anchoring of the fixing device to the ground to further increase the vertical pull-out stiffness of the bearing, thereby preventing the bearing from being pulled out or overturned due to vertical earthquakes, and protecting the long-term effectiveness of the seismic isolation bearing.

The utility model provides a kind of big overhanging rigid-flexible combination space structure system, belong to building construction field.Its technical scheme is: including big overhanging steel structure, internal cable structure and the movable support of the rigid-flexible combination place connecting both, big overhanging steel structure is by outer pipe truss ring beam structure, inner pipe truss ring beam structure, star truss structure and net shell structure constitute, form the whole stiffness very big overhanging main body, internal cable structure is connected with the inner pipe truss ring beam structure of big overhanging steel structure by movable support.The utility model has the beneficial effect that: using rigid structure and flexible structure cooperate, with the coupling stress effect of "rigid-flexible", not only can significantly reduce the seismic response of overall structure, can also improve the wind-induced dynamic response of flexible structure part, simultaneously, big overhanging rigid-flexible combination space structure system effectively improves the structure span capacity, reduces structure deadweight.

The present application relates to a kind of double-column pier system and construction method of quick construction in high-risk seismic area, belong to the technical field of fabricated structure engineering.The double-column pier of construction includes cap beam, pier column, pile cap, pile.The pier column and cap beam are connected by grouting steel pin and slot combination, and the pier column and pile cap are connected by socket and steel pin combination, and the new socket connection node structure of pier column-cap beam / pile cap can better realize mechanical transmission, guarantee the connection reliability and seismic safety of bridge node, the recess of corrugated shape is arranged in the pile cap, and shear stud is arranged below the pier column, which can improve the connection reliability between the pier column and the pile cap, the socket depth of the double-column pier can be reduced to 0.5d by this connection method, and the top grouting method is used to ensure the grouting density.The present application can realize convenient, quick prefabrication and assembly, and has good seismic performance, which guarantees the seismic safety of the system.

The present invention discloses an energy-absorbing and shock-absorbing upper node for an assembled steel structure external wall panel, comprising a wall panel body and a steel beam, wherein the steel beam is connected to one end of the wall panel body through the energy-absorbing and shock-absorbing upper node, and the energy-absorbing and shock-absorbing upper node comprises a C-shaped energy-absorbing and shock-absorbing steel plate assembly and an angle steel connector connected to the C-shaped energy-absorbing and shock-absorbing steel plate assembly; the C-shaped energy-absorbing and shock-absorbing steel plate assembly is connected to the wall panel body through connecting bolts, and the angle steel connector is connected to the steel beam. The lower flange of the steel beam is provided with round bolt holes, and the number, diameter and spacing of the round bolt holes are adapted to the upper node. The upper end of the wall panel is provided with round bolt holes, and the number, diameter and spacing of the round bolt holes are adapted to the upper node.

The application discloses a metal energy dissipation support, which comprises an outer sleeve connecting end, an inner core rod connecting end and at least one set of energy dissipation modules; the energy dissipation module comprises an outer sleeve and an inner core rod, the inner core rod is provided with a metal energy dissipation plate, the inner wall of the outer sleeve is provided with an energy dissipation limiting component, the inner core rod is arranged in the outer sleeve, and the metal energy dissipation plate on the inner core rod is in limiting cooperation with the energy dissipation limiting component on the inner wall of the outer sleeve; the outer sleeve connecting end is connected with one end of the outer sleeve and forms a certain gap between the inner core rod in the outer sleeve; the inner core rod is connected with the inner core rod in the other end of the outer sleeve and forms a certain gap between the other end of the outer sleeve. The metal energy dissipation support can effectively comprehensively integrate the advantages of traditional metal dampers and buckling restrained braces by adopting the energy dissipation support form and the mode of dissipating seismic energy through metal bending deformation, and is modularized and assembled, so that the practicability is greatly improved.

The invention discloses a static and dynamic load control system and method for a ground-anchored space cable three-tower suspension bridge. The system comprises a ground-anchored space cable three-tower suspension bridge and a static and dynamic load control unit arranged on the ground-anchored space cable three-tower suspension bridge; the ground-anchored space cable three-tower suspension bridge comprises a main beam, a middle tower, side towers, transition piers, anchorages arranged on the main beam, and a spatial linear main cable arranged on the anchorage and the main beam; the static and dynamic load control unit comprises a shock-absorbing and energy-absorbing longitudinal limiting support arranged between the middle tower and a transverse connecting box on the main beam along the longitudinal bridge direction, a shock-absorbing and energy-absorbing wind-resistant support respectively arranged between the middle tower and the side tower and a steel box beam on the main beam along the transverse bridge direction, and a vertical support arranged at the junction of the transition pier and the steel box beam on the main beam; the flutter and wind-resistant stability of the whole bridge is improved by the spatial linear main cable; the longitudinal energy absorption capacity of the bridge is improved by the shock-absorbing and energy-absorbing longitudinal limiting support; and the transverse shock-absorbing capacity of the bridge is improved by the shock-absorbing and energy-absorbing wind-resistant support.

The present invention discloses a two-stage shear damper and a design method thereof. The two-stage shear damper includes: a first energy absorbing unit and a second energy absorbing unit. The second energy absorbing unit is connected in series with the first energy absorbing unit in the axial direction, and the axial direction is the length direction of the two-stage shear damper. The second energy absorbing unit includes: a second core plate, an outer cover plate, a viscoelastic material layer and an axial limiter. The outer cover plate is arranged on at least one side of the second core plate in the thickness direction, and the viscoelastic material layer is arranged between the second core plate and the outer cover plate. The axial limiter is connected to the second core plate and is arranged perpendicular to the outer cover plate to axially limit the second energy absorbing unit. The shear limiter is located on both sides of the outer cover plate in the width direction and is spaced apart from the outer cover plate to limit the deformation range of the second energy absorbing unit. According to the two-stage shear damper of the present invention, the shear limiter is used to realize the switching of the two energy absorbing units under different deformation conditions, and the performance is stable and the deformation capacity is large.

The present invention discloses an assembled anchor bolt positioning device and a construction method, comprising an anchor bolt prefabricated block and a positioning and adjusting prefabricated base, wherein the bottom of the anchor bolt prefabricated block is connected to the top of the positioning and adjusting prefabricated base through a mortise and tenon structure, a plurality of anchor bolts are arranged on the anchor bolt prefabricated block, and the positioning and adjusting prefabricated base is provided with transverse and longitudinal adjustment screws for adjusting the horizontal position of the positioning and adjusting prefabricated base; the positioning and adjusting prefabricated base is provided with vertical screws around it, and the vertical screws are provided with adjustment nuts, and the height of the positioning and adjusting prefabricated base is adjusted by adjusting the adjustment nuts. During construction, the positioning and adjusting prefabricated base is first placed in a foundation pit, and after adjusting the height and horizontal position, the initial casting and fixing is performed, and then the anchor bolt prefabricated block is installed through the mortise and tenon structure, and then the overall casting is performed. The anchor bolt positioning and adjustment of the present invention is convenient, easy to install, has a small positioning error, good stability, and a small seismic response of the structure.

The invention relates to the technical field of civil engineering components, in particular to an ancient building wood framework mortise and tenon joint friction damper which comprises a wood column and a wood beam connected to the wood column in a mortise and tenon mode and further comprises a supporting part installed between the wood column and the wood beam. The whole supporting part can be arranged on the upper side or the lower side of a wood beam joint. Wherein the supporting part is used for providing support under the condition that the wood beam generates small deformation relative to the wood column at a corner; under the condition of large deformation, vibration reduction is provided; through the arrangement of the supporting part, the supporting part can achieve the supporting effect under small and medium earthquakes, and the node rigidity and strength are improved; energy dissipation and vibration reduction are achieved under the action of a large earthquake, the earthquake response of structures such as wood beams and wood columns is reduced, tenon-and-mortise joints are protected, and the service life of the tenon-and-mortise joints is prolonged.

The utility model belongs to the technical field of bridge structures, and particularly relates to a spherical friction pendulum support with a beam falling prevention function. An upper support plate of the support is fixed to the bottom wall of a bridge, and the edge of the bottom wall of the upper support plate protrudes downwards to form a circle of anti-shearing force ring; the top end of the guide cylinder is open and upwards slidably sleeves the outer side of the lower support plate from the bottom end of the lower support plate, the bottom end of the guide cylinder is closed and fixed to a bottom plate, and the bottom plate is fixed to the top wall of an abutment; a first cushioning assembly is arranged in a cavity formed between the bottom wall of the lower support plate and the guide cylinder. Therefore, when an earthquake happens to the support, the anti-shearing force ring can be sheared off to consume about 85% of earthquake shearing force, the transverse earthquake response of a bridge is reduced, and the occurrence of a beam falling accident in the transverse direction of the bridge is prevented. In addition, the first cushioning assembly conducts damping and buffering on the lower support plate, earthquake deformation is concentrated in the cavity, earthquake energy is isolated from being transmitted to the upper structure, the earthquake response of the upper structure is reduced, and the longitudinal bridge direction beam falling accident is prevented.

The invention discloses a bridge seismic mitigation and isolation device and a mounting method thereof. An existing friction pendulum support and an existing viscous damper are high in investment. The bridge comprises a beam body, a bridge pier, a high-strength steel bar, a stainless steel plate, a wear-resistant steel plate, non-shrinkage mortar and a high-density polyethylene sleeve, a limiting concrete block is specially designed on a pier top cap, a drainage hole and a high-density polyethylene sleeve are reserved in the middle of the limiting concrete block, the high-density polyethylene sleeve is arranged at the position, corresponding to the limiting concrete block, of a beam body section partition wall, a high-strength steel bar is embedded into the limiting concrete and the sleeve of a beam body, and the high-strength steel bar is anchored; and energy is consumed through relative displacement of the limiting concrete block, the stainless steel plate and the wear-resistant steel plate. The structure is simple, construction is convenient, and the safety of the bridge structure can be effectively protected.

The invention belongs to the field of vibration control of building structures, and discloses a torsion type friction yield two-stage energy consumption coupling beam shock absorber which is mainly used for solving the problem that an existing coupling beam shock absorber cannot achieve self-adaptive energy consumption in multiple working scenes. A first-stage energy dissipation structure is formed between the friction plate on the upper lug plate and the lower lug plate, and second-stage energy dissipation structures are formed between the friction plate on the upper lug plate and the lower lug plate and between the upper lug plate and the torsion steel pipe. Under the action of small earthquakes or wind vibration, the first-stage energy dissipation structure can provide enough static friction damping effect, achieve absorption of vibration energy and prevent the building structure from deforming, and when large earthquakes happen, the second-stage energy dissipation structure achieves further dissipation of energy and effectively reduces earthquake response and deformation damage of the building structure. Self-adaptive energy consumption under different vibration intensities can be achieved, the adaptive capacity is higher, the energy consumption and shock absorption effect is better, and the comfort and safety are higher for high-rise buildings.