392 results about "Large earthquakes" patented technology

The invention relates to an all-steel buckling-preventing energy-consuming brace, which belongs to the technical field of structural engineering. The brace is characterized in that the buckling-preventing energy-consuming brace consists of four hot-rolled groove-shape section steels and a kernel linear steel plate; the four hot-rolled groove-shape section steels are connected through high-strength bolts to form a peripheral constraint component capable of forming a constraint mechanism to the kernel linear steel plate; and a certain gap is reserved between the kernel steel plate and the peripheral constraint component and is coated with unbonded material so as to guarantee the smooth slippage between the two and play a role in anticorrosive protection. The all-steel buckling-preventing energy-consuming brace provided by the invention can provide good effect of resisting lateral force for a plurality of high-rise steel structures, and can achieve total cross-section yielding under the action of large earthquakes so as to effectively consume energy. In addition, as the buckling-preventing energy-consuming brace is an all-assembled component, the brace has the advantages that the brace is easy to machine and install, capable of effectively reducing structural construction cost and excellent in performance.

The invention belongs to the technical filed of building material, and in particular relates to a novel energy consumption and vibration reduction infilled wall board for a frame structure, wherein both sides of a ribbed composite wall board are connected with frame columns; flexible filling materials are arranged between the ribbed composite wall board and the frame columns; the top of the ribbed composite wall board is connected with frame beams through one or more than one slipping device; and the ribbed composite wall board is manufactured by taking a concrete sash as a framework and embedding gas-filling silicate building blocks which take furnace residue and fly ash as main raw materials. The novel energy consumption and vibration reduction infilled wall board for the frame structure has the advantages that the wall board does not participate in earthquake resistance under the condition of small earthquake, so that adverse effects of an infilled wall on the dynamic property and the anti-earthquake performance of the frame structure are avoided; the energy consumption and vibration reduction function of a ribbed composite wall is given full play under the condition of medium earthquake and large earthquake, and the anti-earthquake defense line and the safety margin of the frame structure under the condition of large earthquake are increased; and replacement of the whole wall body or local damaged building blocks can be performed according to the damage conditions after earthquake, so that the repair cost is low and the construction speed is quick.

The invention relates to the technical field of construction framework members, and discloses a fabricated self-recovery round steel pipe concrete combination node. The node comprises a round steel pipe column and H-shaped steel beams, steel bars penetrate through the round steel pipe column, and the round steel pipe column comprises an upper segment steel pipe column, a center inserting column and a lower segment steel pipe column. The upper segment steel pipe column and the center inserting column are connected through a lower sleeve connecting part; the H-shaped steel beams are connected with the round steel pipe column through an upper sleeve connecting part and a lower sleeve connecting part. All members of the bode can be processed and finished in a factory and are connected throughbolts in site, complete fabricated construction is achieved, possible quality problems caused by field welding are avoided, construction progress is accelerated, and labor productivity is improved; bythe design of the node, the earthquake fortification purposes of no damage in a small earthquake, rapid recovery of deformation after a middle earthquake, and accurate dismantle and rapid replacementafter a large earthquake are achieved.

The invention discloses a self-resetting beam column friction energy dissipation joint structure and a construction method thereof. The self-resetting beam column friction energy dissipation joint structure comprises a steel column, a middle beam, short beams, connecting plates, a brass friction plate, spring baffles, high-strength anchor rods and disc springs. One ends of the short beams are fixedly connected with the flanges of the side wall of the steel column, and a gap exists between the middle beam and the short beams; one ends of the connecting plates are fixedly connected with the webof the middle beam, and the other ends are hinged to the webs of the short beams; the brass friction plate is arranged between the connecting plates and the webs of the short beams; one ends of the high-strength anchor rods penetrate through the spring baffles, and the other ends of the high-strength anchor rods penetrate through the two flanges of the steel column and are fixed. The spring discsare sleeved on the high-strength anchor rod on one side, far away from the steel column, of the spring baffles. Structural construction is completed through basic construction, small earthquake testing, parameter selection, node performance design and large earthquake inspection. According to the invention, the formation of a plastic hinge of a traditional steel frame beam-column joint is effectively avoided, the beam column joint is not damaged or slightly damaged under the action of a large earthquake, and the post-earthquake joint can be put into use without repair.

The invention relates to a cross laminated timber (CLT) double-board seismic wall with a swinging energy-dissipation function. The CLT double-board seismic wall is composed of two CLT shear walls, a friction-type vertical connecting piece and a friction-type pulling-resistant anchoring piece. The two CLT shear walls are spliced together through the friction-type vertical connecting piece, and a wall body is connected with a floor or a foundation through the friction-type pulling-resistant anchoring piece. Under the effect of an earthquake, the CLT shear walls rotate in the wall board plane, the friction-type vertical connecting piece is in shear, and lap joint friction surfaces of the friction-type vertical connecting piece slide relatively to dissipate energy; and meanwhile, the specially-designed pulling-resistant anchoring piece is matched with rotation of the CLT shear walls, and friction surfaces in the pulling-resistant anchoring piece also slide relatively to dissipate energy. The CLT shear walls are hardly damaged after the earthquake, friction sheets in the vertical connecting piece and the pulling-resistant anchoring piece are not damaged and do not need to be replaced after the earthquake, and the ideal anti-seismic property that the structure is stable under small earthquakes, the seismic wall swings but is not damaged under large earthquakes, and no post-earthquake maintenance or only a small amount of post-earthquake maintenance is needed is achieved.

The invention provides a shape-memory alloy stranded wire self-centering frictional buckling-restrained brace, and belongs to the technical field of disaster prevention and shock absorption. The shape-memory alloy stranded wire self-centering frictional buckling-restrained brace is mainly composed of a linear steel plate inner core, an inner steel sleeve, an outer steel sleeve, friction plates, high-strength bolts, shape-memory alloy stranded wires, a left end plate, a right end plate, backing plates and anchorage devices; the two ends of the linear steel plate inner core are hinged to stiffening ribs which are connected to the left end plate and the right end plate respectively. The inner steel sleeve serves as a peripheral restriction steel sleeve to be arranged outside the linear steel plate in a sleeving mode, the linear steel plate is arranged in the inner steel sleeve in an opposite angle inclined mode, and a certain gap exists between the inner steel sleeve and the linear steel plate inner core. The inner steel sleeve is connected with the right end plate, the outer steel sleeve is connected with the left end plate, the friction plates are installed between the mutually nested portions of the inner steel sleeve and the outer steel sleeve through the high-strength bolts, and the shape-memory alloy stranded wires are anchored between the inner steel sleeve and the outer steel sleeve through the anchorage devices after being pre-stretched. By means of the shape-memory alloy stranded wire self-centering frictional buckling-restrained brace, the problem that due to the fact that for a conventional brace, excessive residual deformation occurs under the action of a large earthquake or an intermediate-earthquake, the post-earthquake maintenance and reconstruction cost is increased is solved.

The invention discloses a special earthquake isolation and damping support seat which is suitable for railways and bridges and comprises a lead core lamination rubber support seat and an X-shaped mild steel damper, wherein the X-shaped mild steel damper consists of more than three X-shaped mild steel damper single sheets which are sequentially parallel and is arranged at the left side and the right side of the lead core lamination rubber support seat, and the upper end and the lower end of both sides of the X-shaped mild steel damper are respectively fixed on an upper connecting plate and a lower connecting plate of the lead core lamination rubber support seat with high-strength bolts. The special earthquake isolation and damping support seat disclosed by the invention can increase the initial rigidity, enhance the yield strength, efficiently limit displacement of the bridge during small earthquake and middle earthquake, ensure the safety of train running and fulfill the function of better earthquake isolation and damping during large earthquake.

The invention provides a multi-level damping grading yield metal damper comprising at least two annular damper bodies coaxially arranged in an inside and outside sleeving mode. An interval is arranged between the two adjacent annular damper bodies connected through a connecting base plate; the two annular damper bodies are used for being connected with a building structure; and when bent and deformed, the annular damper body relatively located in an inner ring preferentially yields than the annular damper body relatively located in an outer ring. The multi-level damping grading yield metal damper can produce the good damping energy dissipation effect in small earthquakes, middle earthquakes and large earthquakes simultaneously.

The invention discloses a fabricated wood structure embedded steel bar joint which comprises a wood beam, a wood column, a beam-end embedded steel bar, a joint connector and a joint fastener. The wood beam and the wood column are connected through the joint connector, the beam-end embedded steel bar and the joint fastener, the beam-end embedded steel bar is embedded into a duct pre-bored or reserved in a beam end or a channel formed in the beam end through structural adhesives, the channel is sealed by a small batten and structural adhesives, the joint connector is fixed onto a column body through the joint fastener, the joint fastener is fixed to one side of the wood column back to the wood beam through an anchor plate and a cushion block, and cross grains of the embedded steel bar of the beam end are enhanced by self-tapping screws. The invention further discloses a construction method of the fabricated wood structure embedded steel bar joint. Structural stability can be ensured under small earthquake, large deformation of a structure can be realized under large earthquake, structural damage can be controlled, and the fabricated wood structure embedded steel bar joint is high in bearing capacity, energy dissipation and ductility.

The invention belongs to the technical field of building structures of civil engineering, and discloses a replaceable connecting joint for wallboard components of precast concrete shear wall structures. The replaceable connecting joint comprises a first precast concrete shear wallboard (1), a second precast concrete shear wallboard (2) and joint components (3), and the first precast concrete shear wallboard (1) is connected with the second precast concrete shear wallboard (2) via the joint components (3). Under effects of middle and large earthquakes, the replaceable component is yielded or damaged so as to avoid damage of the wallboards, and simultaneously, replacement and repair after the earthquakes are further realized conveniently. The replacement connecting joint is simple in design idea, and convenient in manufacture and construction. A building process is environment-friendly and energy-saving, and cost is reduced. Accordingly, the replacement connecting joint is suitable for the aseismatic design field of industrial precast concrete shear wall structures of houses.

The invention discloses an assembly wood structure beam column embedded steel bar joint which comprises a wood beam, a wood column, an embedded steel bar, adhesives, an assembly connector, a joint fastener and a steel base plate. The wood beam is connected with the wood column through the assembly connector, the embedded steel bar and the joint fastener, the embedded steel bar is embedded into a pre-bored or reserved duct or formed channel at a beam end, the assembly connector is fixed to a column body through the joint fastener, the joint fastener is fixed on one side of the wood column back to the wood beam through the steel base plate, and cross grains of the embedded steel bar position at the beam end are strengthened by the aid of self-tapping screws. The joint has high bending resistance, joint stiffness, energy-dissipating capacity and ductility, can ensure a reliable structure under a small earthquake and can also control structural damage when the structure greatly deforms under a large earthquake, and ideal effects of high bearing capacity, high energy dissipation and high ductility are achieved.

The invention relates to a heavy type wood frame self-resetting node. The heavy type wood frame self-resetting node comprises a wooden beam, a wooden column, beam-end energy-consuming profile steel, a node area column reinforced steel plate and prestressed reinforcement, the wooden beam and the wooden column are connected through the profile steel and common bolts, the prestressed reinforcement longitudinally penetrates through the wooden beam and penetrates through the wooden column, and the end, opposite to the wooden beam, of the wooden column is fixed through an anchor, disk-shaped springs and anchor backing plates. According to the heavy type wood frame self-resetting node, higher bending resistance capacity and energy dissipation capacity are achieved, under a medium earthquake or a large earthquake, the pressure stress of one side of the beam end disappears, the beam end is opened, the beam-end energy-consuming profile steel transmits the shear force and provides rotational stiffness, the structure has large deformation but is not damaged, the prestressed reinforcement is located in an elastic state, after the earthquake action, damage and residual deformation do not exist in the wooden beam and the wooden column, under the action of the prestressed reinforcement, the beam end returns back to an initial state, and the ideal effects that the structure is stable under the small earthquake, the structure has the large deformation but is not damaged under the large earthquake, and the structure achieves self resetting after the earthquake are achieved. In the long-time using process, the disk-shaped spring is arranged at the anchor end, and the prestress loss problem caused by wood creep is relieved.

The invention provides a replaceable energy consumption connecting assembly for connecting a fabricated frame beam column. According to the technical scheme, a replaceable energy consumption assembly is arranged at the connecting position of the fabricated frame beam column and consists of an energy consumption steel rod, a constraint part and a connecting part, one end of the replaceable energy consumption assembly is connected with a node anchor steel bar embedded into the column, and the other end of the replaceable energy consumption assembly is connected with a beam-end longitudinal steel bar embedded into a beam. Under an earthquake effect, the energy consumption steel rod yields prior to other members and parts and utilizes plastic hysteresis to consume earthquake energy. The replaceable energy consumption connecting assembly is used for connecting the fabricated frame beam column, can induce the plastic damage of the structure in a middle earthquake and a large earthquake to be concentrated on the energy consumption steel rod, the damage of abeam column member can be avoided while the seismic ductility of the structure is improved, and the structure can be rapidly repaired after the earthquake in a simple energy consumption part changing mode, so that the structure repair efficiency after the earthquake is remarkably improved. The application of the replaceable energy consumption connecting assembly meets the industrialization development requirements of buildings.

The invention discloses a seismic data reconstruction method and device, and belongs to the field of seismic exploration. The method includes the steps: acquiring seismic data; acquiring a preset seismic data threshold; reconstructing the seismic data in a wave atom domain by a convex set projection algorithm according to the preset seismic data threshold to obtain reconstructed seismic data. The seismic data in irregular deficiency are reconstructed in the wave atom domain by the convex set projection algorithm, and the method solves the problems that calculated amount is large due to anisotropy of flexural wave transformation, and seismic data reconstruction efficiency is low when original seismic data are reconstructed by flexural wave transformation in related technology. Calculation efficiency is high in seismic data reconstruction on the premise of ensuring precision of the reconstructed seismic data.

The invention relates to an inner round platform frictional sliding isolation bearing. The inner round platform frictional sliding isolation bearing comprises a bottom plate, a top plate and a bearing cylinder, wherein the bottom plate, the top plate and the bearing cylinder constitute a closed cavity, a soft steel round platform cylinder is positioned in the cavity and concentric with the cylindrical bearing cylinder, a single-layer friction connecting plate and a double-layer friction plate are arranged in the soft steel round platform cylinder, and the peripheries of the single-layer friction connecting plate and the double-layer friction plate are in close contact with the soft steel round platform cylinder; the single-layer friction connecting plate is arranged at the top layer of the double-layer friction plate and welded with the top plate; an automatic reset device is arranged between the soft steel round platform cylinder and the cylindrical bearing cylinder; and a position-limiting plate is arranged at the top of the bearing cylinder, and anchor bolts are respectively arranged on the bottom plate and the top plate. The inner round platform frictional sliding isolation bearing disclosed by the invention can reduce the earthquake response of a building structure by utilizing the shock isolation action of the inner round platform friction sliding isolation bearing and play a good role in protecting the building structure. The reliability of the structure is ensured by arranging a plurality of friction surfaces for increasing friction area. The destabilization of the structure can be prevented under a large earthquake by arranging the position-limiting plate and the soft steel round platform cylinder, and the structure can be reset automatically after the large earthquake.

The invention discloses an energy dissipation and shock absorption assembly type infilled wallboard structure. The energy dissipation and shock absorption assembly type infilled wallboard structure comprises a wallboard, the wallboard is a rectangular wallboard, the wallboard comprises two L-shaped sub-wallboards with the same size and shape; the horizontal contact interfaces of the two L-shaped sub-wallboards are filled with damping layers and are connected with each other through a bending deformation energy dissipation device in the plane of a steel plate; and the vertical contact interfaces of the two L-shaped sub-wallboards are located in the middle of the wallboard, impact buffer layers are fixedly arranged on the vertical contact interfaces correspondingly, and the space between theimpact buffer layers is filled with flexible filler. The energy dissipation and shock absorption assembly type infilled wallboard structure is provided with different levels of energy dissipation structures, the wallboard structure has the shock absorption and energy dissipation effects under the action of small earthquakes, medium earthquakes and large earthquakes; the wallboard structure has good deformation ability, the wallboard can be effectively prevented from being damaged under the conditions of small earthquakes and medium earthquakes; and the wallboard structure can play a supporting role under the condition of large earthquakes to prevent a wall body from collapsing.

The invention discloses an energy-consumption shear wall made of a composite material, which comprises an upper steel plate, a lower steel plate, a middle steel plate, a constraining steel plate, a viscoelastic material, lead cores and bolt holes, wherein prepared holes are formed in the middle steel plate and the constraining steel plate; the viscoelastic material is arranged between the middle steel plate and the constraining steel plate; after the steel plates and the viscoelastic material are vulcanized together, lead is poured into the prepared holes to form the lead cores through curing; the bolt holes are formed in the upper steel plate and the lower steel plate; the upper steel plate and the lower steel plate can be connected with an upper frame beam and a lower frame beam through bolts to form the energy-consumption shear wall. Under vertical load, wind load and small earthquakes, the energy-consumption shear wall only provides rigidity to resist vertical load, lower horizontal load and bending moment; under middle and large earthquakes, the energy-consumption shear wall can consume earthquake energy due to the viscoelastic material and the lead cores; when the viscoelastic material and the lead cores deform greatly, the energy-consumption shear wall can provide not only rigidity but also damping to reduce various earthquake response of the energy-consumption shear wall; the numbers of the viscoelastic material layers and the lead cores can be changed as required. The energy-consumption shear wall is clear in seismic concept design, simple in structure, low in material cost, and convenient to construct and replace.

The invention discloses a composite shock absorbing graded yield damper, which comprises frame assemblies and an energy dissipating assembly. The frame assemblies are fixed to a coupled shear wall, the frame assemblies are of annular frame structures, one or more than two frame assemblies are arranged, when two or more frame assemblies are arranged, each frame assembly has different sizes, and each frame assembly is coaxially arranged in a sleeving mode at intervals and fixedly connected by a plurality of connecting pads; and the energy dissipating assembly is fixed to the inner walls of the frame assemblies, and when two or more frame assemblies are arranged, the energy dissipating assembly is fixed to the inner wall of the frame assembly of an inner ring. According to the composite shockabsorbing graded yield damper, one or more annular frame assemblies and the internal energy dissipating assemblies are used for layer-by-layer shock absorption, and graded yield energy consuming of the composite shock absorbing graded yield damper in small earthquakes, medium earthquakes and large earthquakes is realized.

Disclosed is a compound damping and limiting device for horizontal-direction friction viscosity of a photovoltaic power station. The compound damping and limiting device is arranged between a foundation and an upper structure bottom plate, a slideway is fixed on the upper structure bottom plate, a friction unit is embedded into the slideway to be capable of sliding freely in a direction perpendicular to the friction force, the friction unit and the foundation are fixed by sway braces, and one ends of additional oil dampers are connected with concrete piers of an upper structure through spherical hinges. The compound damping and limiting device for horizontal-direction friction viscosity of the photovoltaic power station has the advantages that the problem of secondary destruction caused by pipeline fracture resulting from overlarge photovoltaic power station isolating layer displacement under the action of moderate and small earthquakes is solved, and the device starts to slide under the action of large earthquakes to consume earthquake energy as a friction damper.

The invention discloses an all-steel four-steel pipe multistage mountable overlong buckling-restrained brace, and belongs to a novel energy dissipation and seismic mitigation component. On the basis of the traditional buckling-restrained brace, the steel core and the outer restraining component are manufactured and transported in stages and mounted at the construction site. By using the peripheral restraining mechanisms of four hollow steel pipes, the weight of the overlong buckling-restrained brace is effectively reduced so as to solve the difficulties that the general buckling-restrained braces are overlong to cause overlarge self-weight and the initial deflection cannot satisfy the existing requirements. The working section of the steel core is changed from one section to a plurality of sections, so that the stress of the steel core is more uniform and reasonable; the sections are connected to ensure that the length can be up to 30-50 meters; the all-steel four-steel pipe multistage mountable overlong buckling-restrained brace can be applied to the air cooling platform and special structures such as the large-scale industrial buildings and the like to improve the functionality of the buildings through increasing the structural rigidity, and can also be used for protecting the main structure under the design intensity, severe intensity and super-large earthquakes through self-buckling energy consumption.

The invention relates to a damper achieving low-yield-point steel energy dissipation and low particle energy dissipation. The damper comprises a first energy dissipation structure, a second energy dissipation structure, metal particles and an installation plate; a cavity is formed in the first energy dissipation structure, the second energy dissipation structure is contained in the cavity, a gap is reserved between the outer wall face of the second energy dissipation structure and the inner wall face of the first energy dissipation structure and filled with the metal particles, and the installation plate is installed of the outer wall face of the first energy dissipation structure. The two energy dissipation modes including yield energy dissipation of the first energy dissipation structure and the second energy dissipation structure and particle energy dissipation of the metal particles are adopted, and therefore the defect that a metal damper is not yielded under a medium earthquake yet is avoided. During small earthquake yield energy dissipation, particle energy dissipation can compensate yield energy dissipation, and the problem that due to the fact that the yield energy dissipation capacity is exerted too early, the energy dissipation capacity under the medium earthquake and a large earthquake is reduced is solved. In addition, the metal particles supply the energy dissipation capacity to the damper through friction and collision.

The invention discloses a multi-dimensional shock-absorption support. The multi-dimensional shock-absorption support comprises an upper top plate and a lower bottom plate, a plurality of spring sleeves and middle cylinders which are fixedly arranged on the lower surface of the upper top plate, and central columns which are fixedly arranged on the upper surface of the lower bottom plate. The central columns are partially arranged in the middle cylinders, gaps are formed between the upper ends of the central columns and the upper top late, and gaps are formed between the bottom ends of the central cylinders and the lower bottom plate. A vertical damping system is arranged between a spring sleeve and the lower bottom plate, and a transverse damping system is arranged between the central cylinders and the central columns. The support provided by the invention provides the restore force and damping in the horizontal and torsional directions in earthquake, has characteristics of self-recovery in directions and strong energy consumption property, can protect the upper buildings in earthquake, and solves the problem that traditional shock-absorption support cannot realize multi-direction shock absorption in large earthquake.