36 results about "Base isolation" patented technology

To provide a base-isolated building 1 capable of preventing inundation into a base-isolated pit 30 even if an inundation depth exceeds the height of a retaining wall 23.SOLUTION: The base-isolated building 1 includes a foundation structure 20, a base isolation mechanism 22, and an upper structure 10. The foundation structure 20 comprises a retaining wall 23. The upper structure 10 includes a first wall part 16, a second wall part 18 stored inside the first wall part 16, and an opening part 11 opened at a position higher than an upper end of the first wall part 16. The retaining walls 23 surround the periphery of the base-isolation pit 30, and the upper-end side 23a is located at a position higher than the lower-end side 16a of the first wall part 16. In the first flow path side 16c of the first 16c portion 16, the second wall portion 18 pushed up by water flowing into the first flow path side wall from the outside forms at least a part of a waterproof wall 180 that prevents water from flowing into the opening portion 11 of the upper structure 10 from the outside.SELECTED DRAWING: Figure 4

The invention belongs to the related technical field of building shock insulation, and discloses an integrated anti-seismic optimization design method and equipment for a foundation shock insulation structure with an additional tuning inerter shock absorption system, and the method comprises the following steps: (1) simplifying the foundation shock insulation structure with the additional tuning inerter shock absorption system into a two-degree-of-freedom system, carrying out response spectrum analysis on the two-degree-of-freedom system based on a standard response spectrum; (2) optimizing design parameters of the tuning inerter system based on a response spectrum analysis result; and (3) determining an effective damping ratio corresponding to the tuning inerter system based on a principle that the displacement of the vibration isolation structure is equal, and then, after an equivalent basic vibration isolation structure with an additional effective damping ratio corresponding to the basic vibration isolation structure of the additional tuning inerter damping system is established, carrying out structural design based on the equivalent basic vibration isolation structure. Therefore, the integrated anti-seismic optimization design of the foundation seismic isolation structure additionally provided with the tuning inerter damping system is completed. According to the invention, the integrated anti-seismic optimization design of the foundation seismic isolation structure additionally provided with the tuning inerter damping system is realized.

The utility model discloses a power transmission tower foundation shock isolation device, which comprises a base unit, a base unit, a base unit and a base unit, the base unit comprises a supporting seat, an annular cover plate and a rolling plate, the supporting seat is provided with a base cavity, the annular cover plate is fixedly arranged on the supporting seat, and the rolling plate is movably arranged in the base cavity; the shock isolation unit comprises an annular elastic pipe, bearing seats and rolling bearings, the annular elastic pipe is arranged between the side portion of the rolling plate and the inner wall of the base cavity, the multiple bearing seats are annularly fixed to the inner bottom face of the base cavity and the lower bottom face of the annular cover plate, and the rolling bearings are installed on the bearing seats and make contact with the end face of the rolling plate; the rolling plate is installed in the base cavity provided with the annular elastic pipe and the rolling bearing, and when an earthquake occurs, on one hand, the annular elastic pipe and the rolling bearing can limit the upward pulling effect and the left-right movement of the tower leg on the rolling plate; and on the other hand, when the rolling plates move, vibration is isolated and impact energy is absorbed through the annular elastic pipes, restoring force is provided for the iron tower foundation, and therefore the good vibration isolation effect is achieved.

The utility model belongs to the technical field of low-voltage electric appliances, and discloses an isolation shell, a contact system and a contactor. The isolation shell comprises a base and a cover shell, the base is provided with a base isolation structure, and the base isolation structure is used for being arranged between two adjacent static contact pieces; the inner side of the housing is convexly provided with housing isolation structures, the housing isolation structures and the base isolation structures are arranged in a one-to-one correspondence manner, the housing covers the base, and the housing isolation structures and the base isolation structures are in butt joint and are used for jointly cooperating and isolating two adjacent static contact pieces. The base isolation structure is arranged on the base, the cover shell isolation structure is arranged on the cover shell, and when the cover shell covers the base, the cover shell isolation structure and the base isolation structure are matched together, so that double protection can be realized, two adjacent static contact pieces can be isolated, the inter-phase insulation performance is improved, and the stability and the safety of the contactor are ensured.

To protect an artificial ground.SOLUTION: A base isolation structure of a building includes: a steel pipe pile 1 which has a pile body 11 and a pile head plate 122 provided on the upper end of the pile body 11, and has a pile body head part 11H and a pile head plate 122 above a ground surface GL by embedding a pile body main part 11M in the ground G; a seismic isolator 2 which is mounted between the pile head plate 122 and a footing beam 3; pile head concrete 4 which is provided into a cylindrical shape along the outer peripheral surface of the pile body head part 11H from the ground surface GL; and an artificial ground 5 which is provided on the ground surface GL and surrounds the outer periphery of the pile head concrete 4. The pile head concrete 4 suppresses bending of the pile body head part 11H when a load F is applied to the pile head plate 122 through the seismic isolator 2, and the artificial ground 5 surrounds at least the lower part of the pile head concrete 4, with the edge cut with respect to the pile head concrete 4.SELECTED DRAWING: Figure 3

To provide a base isolation structure in which even when an external force occurs in a direction in which one structure and the other structure separate from each other, the external force is attenuated and a base isolation function of a bearing can be exhibited.SOLUTION: A base isolation structure of a bridge is configured to prevent vibrations generated in a bridge pier 4 due to an earthquake or the like from being transmitted to a bridge girder 5, and comprises: a sliding bearing 1 that is arranged between the bridge pier 4 and the bridge girder 5, and supports the bridge girder 5 while allowing the bridge girder 5 to move relative to the bridge pier 4 in a direction perpendicular to a bridge axis Y; a damper 2 that is arranged between the bridge pier 4 and the bridge girder 5, and has a restoration function for generating a tensile force against an external force in a vertical direction Z in which the bridge pier 4 and the bridge girder 5 separate from each other; and a tension adjustment device 3 that adjusts the tensile force of the damper 2.SELECTED DRAWING: Figure 1

The utility model relates to the field of highway warning piles, and discloses a highway rapid disassembly type embedded base isolation warning pile which comprises a warning pile body, a mounting plate, a base, a mounting assembly and a fixing assembly. The base is embedded in the ground through expansion screws, and the mounting plate is fixedly connected to the bottom of the warning pile body. The mounting assembly is arranged below the mounting plate, and the fixing assembly is arranged between the mounting plate and the warning pile body. The warning pile can be rapidly mounted or dismounted only by rotating a certain angle, a road can be conveniently intercepted at any time, the warning pile is fixed through the marbles, a user can conveniently judge whether connection is complete or not, the warning pile is connected with the base embedded in the ground, the warning pile can be prevented from being accidentally knocked down by a vehicle, and the warning pile is safe and reliable. And the base is pre-buried in the ground, and the top plate is flush with the ground, so that the vehicle can be prevented from being clamped in the base in the running process when the warning pile is not connected.

This floating body-type base isolation system 100 comprises: a floating body-type structure 110 that is disposed so as to float in a liquid; mooring parts 120 that are provided around the floating body-type structure 110 and erected in the vertical direction; and mooring cables 130 that have one end side connected to the floating body-type structure 110 and the other end side connected to the mooring parts 120, and on which a tensile load acts.

The application provides a limiting device of a steel wire rope coil based isolation structure and belongs to the technical field of isolation structures. The isolation structure comprises an upper structure beam and a lower structure beam, the upper structure beam and the lower structure beam are respectively provided with embedded parts, the bottom of the upper structure beam and the top of the lower structure beam are respectively provided with a plurality of groups of oppositely arranged connecting pieces, the connecting pieces are fixedly connected with the embedded parts, and a steel wire rope coil is arranged between each group of oppositely arranged connecting pieces and passes through the connecting pieces. The application utilizes the strong tensile capacity of the steel wire rope. When the isolation structure has a large displacement under a rare earthquake, the steel wire rope coil is taut, thereby restricting the displacement of the isolation structure and preventing the collision between the isolation structure and the isolation trench.

The present invention relates to a seismic isolation device comprising: a core seismic isolation part having upper and lower support parts on upper and lower portions thereof, respectively; a stopper coupled to the upper support part; and multiple leaf springs coupled to the stopper. This structure can reliably insulate vibrations applied from the ground to the building when an earthquake occurs, thereby protecting facilities and people in the building, and can minimize overturning or destruction of the building.

To provide a highly versatile base isolation device capable of being mounted upside down.SOLUTION: A vibration isolation device 1 reduces at least one of vibration transmitted from a first object to a second object and vibration transmitted from the second object to the first object. The seismic isolation device 1 includes a housing 2, a slide member 3, first and second rotation mechanism groups 4 and 5, a connection portion 6, and a cover member 7. The housing 2 includes a first plate member side 2a, an opening H formed in the first plate member side 2a, and a second plate member side 2a located to face the first plate member side 2b. Slide member 3 has a first surface 2a facing the first plate member 3a and a second surface 2b facing the second plate member 3b, is stored in housing 2 and located between the first plate member 2a and the second plate member 2b, and is slidable along the first plate member 2a and the second plate member 2b inside housing 2. The first rotating mechanism group 4 and the second rotating mechanism 5 make the slide member 3 slidable.SELECTED DRAWING: Figure 1

This invention discloses a T-shaped wooden column-perforated graphite hardwood-graphite layer-column base stone seismic isolation system, primarily used for seismic isolation and self-resetting at the base of T-shaped wooden columns in timber structures. The system consists of a T-shaped wooden column, three perforated graphite hardwood sections, three concave spherical column base stones with limiting features, a graphite layer, and three annular tempered glass sealing plates. The T-shaped wooden column is composed of three column legs formed by connecting four round logs via square timber ladders and bamboo plywood. The perforated graphite hardwood section consists of a convex spherical section processed from a single piece of wood, a thick cylindrical section, graphite holes, and a thin cylindrical connecting key. The graphite layer reduces the friction between the convex spherical section and the concave spherical surface of the column base stone. The concave spherical surface of the column base stone allows the T-shaped wooden column to self-reset after an earthquake, and the limiting features of the column base stone restrict excessive displacement at the base of the T-shaped wooden column during vibration. The annular tempered glass sealing plates provide a waterproof seal. This seismic isolation system offers the advantages of reducing the seismic load on the superstructure through T-shaped wooden column base isolation and achieving structural resilience and seismic resistance through post-earthquake self-resetting.

To provide a damper attachment structure for attaching damper in a horizontal posture arranged in a base isolation layer capable of exerting relatively high rigidity to exert vibration damping effect through the damper at a lower end part of a strut member even when a top part of the struct member is not allowed to be connected with a large beam having a beam core parallel to a shaft core of the damper when being provided with a steel structural strut members, a top part of which is connected to an upper structural body to extend downward and on which a lower end part is rotatably connected around a vertical shaft.SOLUTION: An upper structural body 2 is provided with a connection part through steel beam 21 having a horizontal core passing through a connection part of a top part 30a of a strut member 30, and an oblique posture reinforce rigid member 41, one end 41a of which is connected to a lower end part 30b of the strut member 30 and the other end 41b of which is connected on the connection part through steel beam 21.SELECTED DRAWING: Figure 2

To provide a building in which precision equipment is arranged and which can improve the degree of freedom of the arrangement of the precision equipment, and a method for changing the arrangement state of the precision equipment.SOLUTION: A building is a building in which precision equipment that hates vibration in a microvibration region is arranged, and includes a base isolation structure that allows relative movement between a ground-side portion of the building and a building portion located above the ground-side portion, and the base isolation structure includes a plurality of spherical sliding bearings that share and support a vertical load of the building portion.SELECTED DRAWING: Figure 1

The invention provides a subway-subsidence square anti-seismic and anti-settlement collaborative structure system design method based on soft soil geological conditions. The method comprises the steps that geological survey and modeling are carried out; designing a prestressed pipe pile composite foundation and a settlement compensation layer; a seismic isolation support and viscous damper combined anti-seismic node design and a self-adaptive anti-seismic connecting piece design are adopted; designing a settlement and anti-seismic collaborative monitoring system; structural redundancy and self-repairing design; and regular maintenance. Through the combination of the prestressed pipe pile composite foundation, the shock insulation support and the damper, intelligent monitoring control, redundancy self-repairing design and a staged construction technology, the geological adaptability and the anti-seismic property of the subway-sunken square connecting area under the soft soil texture are remarkably enhanced, intelligent cooperative control over settlement and seismic resistance is achieved, long-term stability of the structure is guaranteed, and the service life of the subway-sunken square connecting area is prolonged. Meanwhile, the influence of construction on metro operation is reduced, and construction feasibility is improved.

This invention provides a composite vibration reduction system for nuclear power plant structures, comprising an outer structure, an inner containment shell, a base isolation assembly, and an inertial-capacitive composite vibration reduction device. The inner containment shell is located within the outer structure, and the base isolation assembly is installed at the bottom of the inner containment shell and the bottom of the outer structure. The inertial-capacitive composite vibration reduction device is installed between the outer wall of the inner containment shell and the inner wall of the outer structure. The inertial-capacitive composite vibration reduction device is coupled with a magnetorheological fluid and an eddy current control unit. When the inner containment shell undergoes relative motion under seismic loading, an inertial force proportional to the relative acceleration is generated between the two ends of the inertial-capacitive composite vibration reduction device, achieving regulation of the structural dynamic response and energy absorption. This invention designs a composite vibration reduction structural system that couples base isolation with inertial capacity, employing a magnetorheological-eddy current-assisted reset inertial capacitive structure to achieve multiple functions such as inertial capacity amplification, adaptive adjustment, reset recovery, and anti-overturning control.

In a base isolation repair method in which a base isolation device is installed between an upper structure and a lower structure and the upper structure is supported by the lower structure via the base isolation device, a technique for appropriately supporting a vertical load of a floor structure portion cut end portion without adding a new column passing through the floor structure portion cut end portion in the lower structure when a core structure portion is separated from the lower structure in a state of being connected to the upper structure in a form in which the floor structure portion of the lower structure is separated from the core structure portion is provided.SOLUTION: In a separation process for separating an existing building into an upper structural body 10 and a lower structural body 20, a permanent cut end support 40 for supporting a vertical load while allowing horizontal movement is provided on a core structural part 11 with respect to a floor structural part cut end 21a of a floor structural part 21 of the lower structural body 20 separated from the core structural part 11.SELECTED DRAWING: Figure 3

The present invention discloses an intelligent semi-active control method for a base isolation structure, including a model-based reinforcement learning control algorithm for solving the controller using system parameters and a model-free reinforcement learning control algorithm for solving the controller using system input-output data. The control method designs the controller by a hybrid H2 / H ∞ control performance index. First, a mathematical model of the base isolation structure under uncertain excitations such as earthquakes, winds, and randomness is established; secondly, a hybrid H2 / H ∞ controller is designed by using a model-based reinforcement learning method and an off-policy model-free reinforcement learning method respectively; finally, the results of the two algorithms are compared to verify that both algorithms can ensure the seismic and shock absorption performance of the building structure. The present invention provides a simple, efficient, low-cost, and highly robust control algorithm for the seismic isolation and shock absorption design of building structures, improves the seismic and wind resistance capabilities of the structure, and ensures the structural safety.

To provide a water immersion suppression mechanism of a base isolation layer capable of suppressing water immersion into the base isolation layer SOLUTION: A flood suppression mechanism of a base isolation layer includes a retaining wall 22 surrounding the base isolation layer supporting a building 10, an expansion joint 40 arranged across a base isolation clearance between the retaining wall 22 and the building 10, and a tide embankment 50 arranged on the expansion joint 40 in a laid state and raised to the retaining wall 22 side to serve as a tide embankment.SELECTED DRAWING: Figure 2

A floating-type base isolation system 100 comprises: a storage space 116 in which a liquid for floating a floating-type structure 120 is stored; a first chamber 132 which accommodates therein a compressive fluid and which has a volume variable in accordance with pressure variation of the liquid; and a second chamber 134 which accommodates therein a compressive fluid and which has a pressure or a volume that passively varies in accordance with volume variation of the first chamber 132.

The invention relates to the technical field of civil air defense engineering, in particular to an anti-seismic and shock-isolation base structure for urban underground civil air defense engineering, which comprises a supporting plate laid at the upper ends of a plurality of supporting columns, and a supporting part is detachably mounted between each supporting column and the supporting plate. The buffering component is installed at the upper end of the connecting column, the supporting plate is laid at the upper ends of the supporting component and the buffering component, the sound insulation layer is laid at the upper end of the supporting plate, and the fireproof layer is laid at the upper end of the sound insulation layer. And meanwhile, the damper quickly enables the supporting plate to restore to the initial position, buffering and damping are conducted on the floor, meanwhile, a first spring and a second spring are convenient to disassemble and assemble through an arranged tensioning component, the damper is convenient to disassemble and assemble through an arranged first fixing plate and a bottom plate, and using is more convenient.

This invention provides reinforced concrete and wooden high-rise buildings with seismic isolation capabilities that can be efficiently and effectively incorporated into the structure, while eliminating the need for underground pits to install base isolation foundations. [Solution] A seismically isolated high-rise building is constructed including a lower floor 20 made of reinforced concrete and an upper floor 30 made of a wooden hybrid structure, wherein an intermediate floor seismic isolation layer 40 is interposed between the lower floor 21 and the upper floor 22 of the lower floor 20. The intermediate floor seismic isolation layer 40 is provided with a plurality of seismic isolation operating parts 43. Each seismic isolation operating part 43 is composed of a lower concrete base part 41a, an upper concrete base part 42a, and a seismic isolation device 47, and the intermediate floor concrete wall 45 of the intermediate floor seismic isolation layer 40, which is erected between the lower floor 21 and the upper floor 22, is formed in a state where it is divided by seismic isolation slits 46.

The invention discloses a round wooden column-steel spherical crown piece-graphite-doped steel ball layer-along column foundation stone seismic isolation system. The system comprises a round wooden column, a hollow steel spherical crown piece and concave spherical surface belt limiting along column foundation stone; the round wood and the hollow steel spherical crown piece are connected in an up-down embedded mode. A groove is formed in the upper portion of the concave spherical face and limiting edge column foundation stone, the groove is machined into a concave spherical face in the vertical direction, the circumferential direction of the concave spherical face is an annular limiting edge, and the circular wooden column and the annular limiting edge are connected in a sealed mode through an annular tempered glass sealing plate. The surface of the concave spherical surface is filled with a graphite-doped steel ball layer. The graphite-doped steel ball layer can reduce the friction force between the steel spherical crown and the concave spherical surface of the column foundation stone. The concave spherical surface of the column foundation stone enables the round wooden column to reset automatically after an earthquake, and the limiting edge of the column foundation stone can limit excessive displacement of the bottom of the round wooden column in the vibration process. And the annular toughened glass sealing plate can be sealed and waterproof. The seismic isolation system has the advantages of reducing the seismic action of an upper structure through bottom seismic isolation of the circular wooden columns and achieving structural toughness seismic resistance through self-resetting after an earthquake.

The application belongs to the technical field of vibration control, and particularly relates to a main structure displacement amplification type tuned negative stiffness inertial mass dynamic vibration absorbing system. The system comprises a bottom plate, a core transmission member, a positive stiffness spring mechanism, a gear amplification mechanism, a negative stiffness device, an inertial mass device driven to rotate by the movement of the core transmission member to generate an equivalent tuned mass, and an eddy current damping device. The gear amplification mechanism amplifies the initial displacement input by the external main structure, overcoming the defects of the traditional shock absorber, such as difficulty in triggering and insufficient work under low frequency or slight vibration; not only the natural frequency of the coupled structure is reduced by the negative stiffness effect to broaden the vibration reduction frequency band, but also more energy is dissipated in unit time and a huge equivalent tuned mass is generated, so that the destructive large displacement of the base isolation layer in strong earthquakes is extremely efficiently inhibited without significantly increasing the structure acceleration, and the seismic safety of the building is comprehensively improved.

To provide a base isolation building structure which is easy to construct and can suppress construction costs.SOLUTION: A foundation 1 has a housing part 11 having an inner bottom surface 11a and an inner side surface 11b and an open upper part. A column 4 is erected above the inner bottom surface 11a of the housing part 11. A granular material 5 is filled between the inner bottom surface 11a and the inner side surface 11b of the housing part 11 and the column 4. A lower bottom plate 2 is provided on the inner bottom surface 11a, an upper bottom plate 3 is slidably provided on the lower bottom plate 2, and the column 4 is erected on the upper bottom plate 3. A lid 6 for closing the housing part 11 is provided, and the lid 6 has a hole for penetrating the column 4.SELECTED DRAWING: Figure 1

To provide a base isolation structure capable of damping vibration by a bearing member having small deformation with respect to the displacement of a structure.SOLUTION: A base isolation structure is provided with a column 16 for supporting a structural body (upper structural body 14), a rotary support part 16A which is provided at one end of the column 16 and is a pin joint in structural design, and an elastic or viscoelastic bearing member 24 which is symmetrically arranged on the other end face of the column 16 around the center line CL of the column 16 and has a compressive rigidity greater than a tensile rigidity.SELECTED DRAWING: Figure 1

To provide a base isolation structure capable of executing an effective minute vibration countermeasure.SOLUTION: The base-isolated S10 includes a base-isolating device provided on a lower structural body 12 and supporting an upper structural body 14 in a base-isolated manner, and a damping member 18 for microvibration provided between the lower structural body 12 and the upper structural body 14. The damping member 18 for minute vibration includes the cylindrical body 32 fixed to the upper surface of the lower structure 12, the core member 34 disposed in the cylindrical body 32, the viscous body 36 provided on the bottom side inside the cylindrical body 32 and configured to come into contact with the lower end portion of the core member 34 to apply a damping force to the core member 34, and the lid body 38 provided at the mouth portion of the cylindrical body 32 and formed with the through hole through which the core member 34 penetrates. And a main shaft material 44 having the other end connected to the upper structure 14 by a universal joint and converting vertical and horizontal microvibration into the axial movement of the core material 34.SELECTED DRAWING: Figure 2

To apply base isolation effect to the entire artificial ground.SOLUTION: An artificial ground structure 1 comprises an artificial ground 2 that is separated from natural ground and is rotatably installed, and a rotation mechanism that rotatably supports the artificial ground 2. The rotation mechanism is connected to the artificial ground 2, converts earthquake motion into energy for rotating the artificial ground 2, accumulates the energy, and converts the accumulated energy into rotational force to rotate the artificial ground 2. A waterway 6 is provided between the artificial ground 2 and the natural ground 4. A plurality of artificial grounds 2 are connected to each other.SELECTED DRAWING: Figure 1

A floating body type base isolation system 100 comprises: a liquid storage part 110 that stores liquid in a storage space S demarcated by an inner wall 120a of a wall part 120; and a floating body type structure 130 that is disposed by floating in the liquid stored in the storage space S of the liquid storage part 110. An area (first inclined surface P1) inclined with respect to an outer surface 134 of the floating body type structure 130 is provided on the inner wall 120a of the wall part 120 of the liquid storage part 110.

To provide a base-isolated high-rise building that can properly perform its base isolation function by ensuring sufficient superimposed load while suppressing the acceleration that occurs in the upper floors of a wooden hybrid structure during an earthquake. [Solution] A seismically isolated high-rise building is constructed including a lower floor 20 made of reinforced concrete and an upper floor 30 made of a wooden hybrid structure, wherein an intermediate seismic isolation layer 40 is provided between the top floor 22 and the lower floor 21 of the lower floor 20. The top floor, the second floor 22, is made of reinforced concrete, including the portion of the ceiling slab 23 that also serves as the floor slab of the third floor 31a, the lowest floor of the upper floor 30, thereby ensuring that the superimposed load on the seismic isolation devices at multiple locations is secured.