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14results about How to "Reduce earthquake force" patented technology
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Design method and construction method for earthquake prevention and disaster reduction of T-shaped rigid frame bridge
ActiveCN119475515AProtect operational safetyreduce earthquake forceGeometric CADSustainable transportationArchitectural engineeringSeismic energy
The invention relates to the technical field of disaster prevention and reduction, in particular to a design method and a construction method for earthquake prevention and disaster reduction of a T-shaped rigid frame bridge. According to the design method, a swing energy dissipation and shock absorption device is added in the design process of the T-shaped rigid frame bridge, collaborative optimization is carried out, so that the T-shaped rigid frame bridge does not have plastic damage under the action of an earthquake exceeding fortification intensity; the swing energy dissipation and seismic mitigation device dissipates seismic energy, reduces the seismic energy transmitted from the foundation and the bearing platform to the bridge piers and the main beam, reduces the seismic force of the bridge piers, reduces the displacement and flapping effect of the main beam, and protects the operation safety of the T-shaped rigid frame bridge.
Owner:CHINA RAILWAY 23RD BUREAU GRP SIXTH ENG CO LTD +1
A highway tunnel fabricated steel-concrete thin-walled reinforcing structure and design method
ActiveCN120100482BNot affected by reinforcementinfluence spaceUnderground chambersTunnel liningArchitectural engineeringThin walled
Owner:CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
A multi-directional buffering, limiting, energy-absorbing bridge seismic stopper reinforced with steel springs
InactiveCN113789716Bfree from harmreduce earthquake forceClimate change adaptationBridge structural detailsExpansion jointBlock structure
The present invention relates to the field of bridge seismic technology, and in particular to a multi-directional buffering, limiting, and energy-absorbing bridge seismic stopper reinforced with a steel spring, comprising a steel corbel and a stopper structure, wherein the steel corbel is fixed above the side wall of the pier, and the stopper structure comprises an upper concave stopper and a lower square stopper; it comprises a steel spring, which is fixed below both sides of the concave stopper; it comprises a buffer device, which comprises a movable steel plate, a compression spring, and a triangular stopper. The present invention limits excessive displacement between the upper main beam and the lower pier in the transverse and longitudinal directions of the bridge, and prevents beam drop damage in the transverse and longitudinal directions; transfers the collision between adjacent beams at the expansion joint to multiple bridge seismic stops, and reduces the expansion impact damage at the expansion joint and the local damage in the collision area between adjacent beams; the stopper has a certain reset ability; the material price is low, the structure is simple, and the construction is convenient.
Owner:NANCHANG UNIV
Arch bridge structure and construction method thereof
InactiveCN119083284Areduce earthquake forceBridge structural detailsBridge erection/assemblyArchitectural engineeringPier
The invention discloses an arch bridge structure and a construction method thereof, the arch bridge structure comprises two groups of arch ribs, each group of arch ribs comprises a main arch rib and side arch ribs on two sides of the main arch rib, the main arch ribs are fixedly connected with main piers on two sides, the side arch ribs are fixedly connected with the main piers and auxiliary pier cross beams, and the arch bridge structure further comprises a first cross beam located below a bridge floor and connected with the two main arch ribs; the two ends of the center hole longitudinal beam are supported on the first cross beams on the two sides respectively; the inner side end of the side hole longitudinal beam is fixedly connected with the first cross beam; the auxiliary hole longitudinal beam is fixedly connected with the outer side end of the side hole longitudinal beam, and a triangular rigid frame system is formed between the side hole longitudinal beam and the main arch rib and between the side hole longitudinal beam and the side arch rib, so that the earthquake force of each key control position of the arch bridge is reduced, and the arch bridge adapts to the geological conditions that the rigidity is weak and thrust cannot be provided.
Owner:BEIJING GENERAL MUNICIPAL ENG DESIGN & RES INST +1
Design method of existing large-span structure additionally-built roof
PendingCN119622859ARealize the shock isolation effectreduce earthquake forceGeometric CADSustainable transportationInsulation layerEarthquake intensity
The invention discloses a design method for an additional roof of an existing large-span structure, which comprises the following steps: S1, according to the current situation of the existing large-span structure, determining the total mass M, lateral stiffness k1 and damping ratio of the existing structure and the positions and number n of supporting nodes of the additional roof; the natural vibration frequency of the existing large-span structure is calculated through a formula (1); s2, determining the total mass of the roof; s3, the rigidity of the newly-added roof shock insulation layer is determined; s4, determining design parameters of a single shock insulation support; s5, checking the strength and stability of the components of the roof structure according to the reduced seismic intensity; s6, checking whether the lower supporting structure of the roof meets the standard requirements or not; and S7, building a roof seismic isolation model by taking the roof and the lower structure as a whole, and checking the displacement and acceleration of a seismic isolation layer and the lower structure until the standard requirements are met. By controlling the design process and parameters, the seismic isolation effect on the roof structure can be achieved, seismic oscillation input of the roof structure is isolated, and the seismic force of the roof is greatly reduced.
Owner:BEIJING INST OF ARCHITECTURAL DESIGN
1000kV lattice type steel structure quadrilateral variable cross-section column in high altitude area
ActiveCN222121115Ureduce the overall heightreduce dosageTowersProtective buildings/sheltersClassical mechanicsGravity center
The utility model relates to the technical field of electrical equipment installation, aims to solve the problems that in the prior art, a framework is high in height, large in equipment load, high in gravity center, large in horizontal earthquake force borne by the structure, prone to instability, large in steel consumption, high in cost and large in investment, and provides a 1000kV lattice type steel structure quadrilateral variable cross-section column in a high altitude area. The top ends of the first steel pipe, the second steel pipe, the third steel pipe and the fourth steel pipe are mutually inclined, close to each other and distributed at intervals; a plurality of connecting pieces are connected in gaps among the first steel pipe, the second steel pipe, the third steel pipe and the fourth steel pipe; an equipment room and a cantilever frame are arranged at the top ends of the support columns, and shock absorbers are arranged on the top face of the cantilever frame. The utility model has the beneficial effects of low framework height, small equipment load, low gravity center, small horizontal earthquake force on the structure, low possibility of instability, small steel consumption, low cost and low investment.
Owner:SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
An air-floating deep-water foundation and its construction method
ActiveCN111549679BReduce problem sizelose weightFoundation engineeringBridge erection/assemblyArchitectural engineeringStructural engineering
The present application relates to an air-floating deep-water foundation and its construction method, and to the technical field of deep-water foundations for bridges, including a well chamber, a pipe column, supporting ribs, a bottom cover and a cap, wherein a plurality of well chambers with regular polygonal or circular cross sections constitute a well seat with a polygonal cross section, and a pipe column with a circular cross section is passed through the center of each well chamber, the well chamber and the pipe column are connected by supporting ribs, and a post-casting strip and a drainage hole are provided on the pipe wall at the bottom of the pipe column, ensuring that the entire well chamber space is filled when the bottom cover concrete is poured; since the upper part of the pipe column adopts a double-walled steel shell concrete structure and the concrete in the double-walled steel shell is cast on site, the lower part of the foundation is a concrete structure and the upper part is a hollow steel shell structure during floating, which is conducive to improving the stability of the foundation during floating and reducing the draft of the foundation. The present application has the advantages of smaller scale, lower construction difficulty and risk, more reliable construction quality, shorter construction period, more reasonable structural stress, and better economy.
Owner:CHINA RAILWAY MAJOR BRIDGE RECONNAISSANCE & DESIGN INSTITUTE CO LTD
A shock-absorbing and energy-consuming assembled swing pier component and construction method thereof
ActiveCN111074756Bdissipate seismic energyImprove seismic performanceClimate change adaptationBridge structural detailsIsosceles trapezoidArchitectural engineering
The present invention relates to the field of earthquake-resistant safety technology, and in particular to a shock-absorbing and energy-absorbing assembled swing pier component and a construction method thereof, comprising a steel box, a swing structure, a rubber layer and a steel sleeve, wherein the steel box is a hollow box structure with an open top, and its longitudinal section is composed of a square structure at the top and an isosceles trapezoidal structure at the bottom that is wide at the top and narrow at the bottom; the bottom of the steel box is fixed to a base steel plate, and the base steel plate is connected to a foundation pedestal below it through anchor bolts; the swing structure is sleeved inside the steel box, and a gap for setting a rubber layer is provided between the swing structure and the steel box; the steel sleeve is sleeved on a connecting column at the axial top of the swing structure, and the swing structure is connected to the pier through the steel sleeve and the pier steel bars arranged along the circumference of the steel sleeve. The present invention causes the pier to swing to release the bending moment at the top and bottom of the pier, has a simple structure, clear force, and has efficient energy dissipation and self-reset capabilities.
Owner:NANCHANG UNIV
A combined prestressed composite floor slab
The present invention discloses a combined prestressed composite floor slab, comprising a bottom plate and a compression rib, wherein the compression rib is in the shape of a long strip, and a plurality of compression ribs are arranged in parallel on the bottom plate, and the compression rib is provided with a plurality of sets of anchoring steel bars at intervals along the length direction, and each set of anchoring steel bars has two sets of anchoring steel bars, which are symmetrically arranged on both sides of the compression rib, and one end of the anchoring steel bar is embedded in the compression rib, and the other end is fixedly connected to the bottom plate by secondary pouring. The present invention reduces the amount of building materials and reduces the cost while ensuring the tensile strength and compressive strength.
Owner:ELITE ARCHITECTURAL CO LTD
A super high damping elastic skateboard support
ActiveCN118756845Beffective isolationReduce direct impactProtective foundationProtective buildings/sheltersClassical mechanicsSeismic energy
The present invention relates to the field of seismic isolation, and specifically to an ultra-high damping elastic skateboard bearing, comprising a flange plate, a damping member connected to the bottom of the flange plate, a frame connected to the inside of the damping member, a sealing plate connected to the bottom of the damping member, a polytetrafluoroethylene plate connected to the bottom of the sealing plate; a plurality of fastening components are embedded in the sealing plate at circumferentially equidistant intervals, a plurality of locking components are movably inserted in the polytetrafluoroethylene plate at circumferentially equidistant intervals, and the locking components are inserted in the fastening components. The present invention can effectively isolate most of the seismic energy through the polytetrafluoroethylene plate, reduce the direct impact of seismic waves on the upper structure, and through the setting of the damping member, the skateboard bearing can absorb and consume a large amount of seismic energy during an earthquake, significantly reduce the seismic force on the structure, and protect the building from damage.
Owner:ZHONGZHEN HUACHUANG (SHENZHEN) TECH CO LTD
A multi-directional buffering, limiting, energy-consuming, resettable bridge anti-seismic stopper structure
ActiveCN111287071Bavoid damageReduce earthquake damageClimate change adaptationBridge structural details
The present invention discloses a multi-directional buffering, limiting, energy-consuming, resettable bridge anti-seismic block structure, comprising a steel corbel and a block structure, wherein the steel corbel is fixed to the top of the side wall of the bridge pier by steel corbel bolts, and the block structure comprises a steel top plate fixed to the bottom of the main beam by steel top plate bolts, and a square block fixed to the top of the steel corbel, and a concave block with an inverted "concave" structure is fixed to the bottom of the steel top plate, and a rough friction surface is formed on the upper surface of the square block, and the friction surface is in close contact with the top of the groove at the bottom of the concave block, and a plurality of block compression springs are arranged between the upper side wall of the square block and the side wall of the groove at the bottom of the concave block. The present invention can limit energy consumption in multiple directions, and the material price of the present invention is low, the structure is simple, and the construction is convenient.
Owner:NANCHANG UNIV
A friction pendulum support that can resist upward pulling force
ActiveCN116290442Bcompact structureImprove carrying capacityBridge structural detailsProtective buildings/sheltersSlide plateSteel ball
This invention relates to the field of seismic isolation and vibration reduction engineering technology, and discloses a friction pendulum bearing capable of resisting uplift forces. This friction pendulum bearing includes a liner unit, a support unit, a reset unit, and a limiting unit. The liner unit includes a steel ball-shaped liner and pressure-bearing sliding plates symmetrically arranged on the upper and lower sidewalls of the steel ball-shaped liner. The support unit includes an upper support and a lower support arranged opposite to each other, and retaining ring assemblies arranged on the opposite sidewalls of the upper and lower supports. The reset unit includes flange plates respectively arranged on the sidewalls of the upper and lower supports and a reset member connecting the opposite flange plates. The friction pendulum bearing of this invention dissipates seismic energy through the conversion of kinetic energy, potential energy, and thermal energy during frictional sliding. It has a compact overall structure, high load-bearing capacity, and can reliably withstand and transmit forces when the superstructure of a bridge or building generates forces in different directions, ensuring that it can resist uplift forces regardless of displacement in any direction.
Owner:柳州东方工程橡胶制品有限公司
A bridge seismic damper structure with rotational friction energy dissipation
ActiveCN111441241Beffective absorptionreduce earthquake forceClimate change adaptationBridge structural detailsClassical mechanicsSeismic energy
The present invention discloses a bridge seismic damper structure with rotational friction energy consumption, including a limiter, a friction rod, a friction ball, a cylinder, a piston rod of the cylinder and a fixed hinge support; the limiter is fixed above the side wall of the pier, the friction rod is fixed inside the limiter and passes through the friction ball to be connected thereto; the bottom of the piston rod is connected to the friction ball, and a top section is located inside the cylinder; the top of the cylinder is hinged to the fixed hinge support; the fixed hinge support is fixed to the bottom of the beam. The present invention is reasonably designed, and the friction ball and the friction rod are provided to fully utilize the rotational friction caused by the displacement of the beam to consume the seismic energy; the cylinder and the piston rod are provided to absorb the vibration energy of the bridge during an earthquake through the damping generated by the compressed gas flow, thereby limiting the relatively large displacement of the beam and the pier. The present invention has a simple structure, convenient construction and low cost.
Owner:NANCHANG UNIV
Variable-friction-coefficient sliding shock isolation device with limiting function
ActiveCN119083614Areduce earthquake forcesmall slip displacementProtective buildings/sheltersEngine lubricationFrictional coefficientSeismic isolation
The invention belongs to the technical field of seismic isolation, and discloses a variable friction coefficient sliding seismic isolation device with a limiting function, which comprises a ring beam, a sliding area is arranged at the bottom of the ring beam, the sliding area comprises a first ceramsite layer, and the first ceramsite layer is arranged at the bottom of the ring beam; the second ceramsite layers are symmetrically arranged on the two sides of the first ceramsite layer, and the particle size of the second ceramsite layers is smaller than that of the first ceramsite layer; the third ceramsite layers are symmetrically arranged on the two sides of the second ceramsite layer; the rubber pier is arranged on the outer side of the third ceramsite layer and used for limiting sliding displacement of the ring beam, the oil tank is arranged on the ring beam, and engine oil in the oil tank is sprayed on ceramsite to change the friction coefficient of the ceramsite; according to the scheme, the change of the friction coefficient is achieved by arranging the ceramsite with the particle size from large to small, and the problems that in the prior art, the ring beam is difficult to slide due to the fact that the friction coefficient of materials is too large, the shock isolation effect is weak, the ring beam sliding displacement is too large due to the small friction coefficient, and a shock isolation device is not limited are solved.
Owner:CHONGQING UNIV