A sliding seismic isolator includes a first plate attached to a building support, and an elongate element extending from the first plate. The seismic isolator also includes a second plate and a low-friction layer positioned between the first and second plates, the low-friction layer allowing the first and second plates to move freely relative to one another along a horizontal plane. The seismic isolator also includes a lower support member attached to the second plate, with a biasing arrangement, such as at least one spring member or at least one engineered elastomeric element, which can include one or more silicon inserts, positioned within the lower support member. The elongate element extends from the first plate at least partially into the lower support member and movement of the elongate element is influenced or controlled by the biasing arrangement.

Disclosed is an intelligent anti-seismic device for a shallow foundation ancient building, which may include a land, a foundation base and an ancient building body, foundation pit is excavated on a surface of the land, a plurality of piles are arranged on an inner wall of the foundation pit, a foundation side beam is integrally formed by pouring on tops of the plurality of piles, a first earthquake proof mechanism capable of being lifted and lowered is fixed on a top of the foundation side beam, a well-shaped base is integrally formed on the inner wall of the foundation pit, a second earthquake proof mechanism is fixed on a surface of the well-shaped base, a frame is fixed on both tops of the first earthquake proof mechanism and the second earthquake proof mechanism, a grillage beam is integrally formed on an inner wall of the frame.

The present invention provides a viscoelastic wall panel damping device (100) that provides damping against multidirectional reacting dynamic loads that include in-plane shear force resistance and out of plane force resistance. The viscoelastic wall panel damping device (100) of the present invention, including an assembly (100a) having a pair of symmetrically opposing surfaces formed by a pair of damping element planar members (36a, 38b) that sandwiches a rigid planar member (34), The assembly (100a) being over-laid by a pair of face plates (28, 32), a proximal face plate (28) and a distal face plate (32). Aforementioned pair of face plates (28, 32) and the rigid planar member (34) of the assembly (100a) having a plurality of vertically oriented stiffener members (33) comprising of vertically oriented welded strips (33a) of steel disposed with stiffener elements (33b) at spatial intervals along the length of said welded strips of steel (33a). Aforementioned pair of face plates (28, 32) further being disposed at respective outer surfaces (28a, 32a) with a plurality of horizontal stiffener members (22).

A three-dimensional isolator for vibration-seismic dual control. The three-dimensional isolator comprises an isolator body and isolator components, wherein the isolator body comprises a plurality of middle-layer connecting plates and a plurality of rubber module units, the middle-layer connecting plates are vertically arranged at intervals, and the rubber module units are arranged on the upper surfaces and the lower surfaces of the middle-layer connecting plates in parallel and connect the middle-layer connecting plates into a whole; and the isolator components comprise cover plate components and pre-tightening pieces, the cover plate components comprise an upper cover plate, a lower cover plate and side walls which define an isolator cavity, a flange plate is arranged on the top of the side wall, a gap is reserved between the upper cover plate and the flange plate.

A vibration isolation apparatus 1 includes: a laminated elastic body 8 in which elastic layers 3 and rigid layers 7 are alternately laminated and a circularly columnar body 14 which is constituted by damping bodies 12 press-fitted in a circularly columnar hollow portion 11 of the laminated elastic body 8, wherein each of the damping bodies 12 contains a thermally conductive filler, a graphite, and a thermosetting resin.

In a boiler support structure in which certain ones of seismic isolators are provided with a pullout countermeasure, the seismic isolators to be provided with the pullout countermeasure are individually identified according to whether the seismic isolator satisfies Formula (1) : N.sub.Dn+N.sub.EQn>N.sub.tn . . . Formula (1) , where N.sub.Dn (N.sub.D<0) is a compressive load occurring on each of the seismic isolators and calculated on the basis of a permanent load imposed on the boiler support structure; N.sub.EQn (N.sub.EQn>0) is a pullout force occurring on each of the seismic isolators and calculated on the assumption that an earthquake has occurred; and N.sub.tn (N.sub.tn>0) is an allowable pullout force of each of the seismic isolators and calculated using an allowable pullout stress of each of the seismic isolators.

A prefabricated house including: a steel-frame foundation where H-shaped steels are connected in a rectangular contour, a vertical frame and a horizontal frame composed of an H-shaped steel are arranged inside the connected H-shaped steels, and inclined frames are mounted at four corners of the rectangular contour; a seismic isolation rubber supporting the steel-frame foundation on a foundation of the prefabricated house via a supporting frame; a rectangular floor member; outer wall members erected from four peripheries of the floor member; an inner wall member mounted at a position partitioning the floor member; and a roof member with a mountain-shaped section mounted on the outer wall members via a climbing beam, wherein changing positions of a window and a door and changing a room layout can is possible by changing positions of the wall member panels or reversing outer and inner faces or upper and lower sides of these panels.

A double variable sliding isolator including a bottom sliding plate, a top sliding plate, and a friction piece is provided. The bottom sliding plate has a bottom sliding surface that has at least two curvatures. The top sliding plate is disposed over the bottom sliding plate and has a top sliding surface that has at least two curvatures. The friction piece is disposed between the top sliding plate and the bottom sliding plate and the friction piece is in contact with the bottom sliding surface and the top sliding surface. When an external force is applied to the bottom sliding plate and the top sliding plate, the bottom sliding plate and the top sliding plate will generate a relative displacement, so that the friction piece slides along the bottom sliding plate and the top sliding plate.

The present disclosure discloses a three-dimensional seismic and vibration isolator with adaptive stiffness property in both vertical and horizontal directions. The isolator comprises an upper connection plate, a middle plate, an lower connection plate, a disc spring, a pre-compressed helical springs, a laminated lead rubber bearing, and viscous dampers. The upper connection plate, the middle plate and lower connection plate are made of high strength low carbon steel. The upper connection plate and middle plate are tightly contacted by the occlusive design, to guide the vertical motion. The vertical isolation system is made up of the disc spring, pre-compressed helical spring, and viscous damper. The horizontal isolation system comprises the laminated lead rubber bearing, pre-compressed helical spring and viscous damper. The disclosure adopts the theory of nonlinear adaptive vibration control technology and can be used to protect building structures or instruments from the seismic strikes or other environmental vibrations.

An anti-seismic grid framework system including a grid framework structure configured for supporting a load handling device operative to move one or more containers in a stack. The anti-seismic grid framework system includes a seismic isolation system for reducing seismic forces acting on the grid framework structure, wherein the grid framework structure is supported by the seismic isolation system, the seismic isolation system including a superstructure and a substructure, and at least one base isolation device disposed between the superstructure and the substructure such that the at least one base isolation device suppresses movement of the superstructure relative to the substructure in a seismic event.