The present invention relates to a seismic isolation device, including: a sliding platform (100) having a sliding surface (120) of a downwardly concave spherical shape formed on an upper surface thereof; and a sliding body (200) placed on the sliding surface (120) being capable of sliding on the sliding surface (120) by means of a sliding means, wherein the sliding body (200) slides on the sliding surface (120) in a situation where an earthquake occurs to effectively absorb vibrations applied to a structure, such that the structure can be safely protected.

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.

A seismic isolator comprising: a first and a second plate-like coupling member which are arranged substantially horizontally one spaced apart above the other; and a movable sliding-block which is interposed between said plate-like coupling members, and rests in a freely sliding manner on the concave bottom of a depression realized on the exposed face of said first plate-like coupling member; the concave bottom being provided with at least one free-sliding area, which surrounds/flanks the stationary-standing area and is provided with a dynamic friction coefficient greater than that of the stationary-standing area.

A combination apparatus for use in connecting the carrier elements to each other particularly in buildings is provided. Upon providing a flexibility by the building which is not damaged against quake; at least one first inner plate group which can be connected to one of the carrier elements desired to be combined or at least one second inner plate group which can be connected to one other carrier element, at least one outer plate configured to rest said first inner plate group or said second inner plate group towards each other in a tight manner, at least one friction element which can increase rotational resistance with respect to each other, between the first inner plate group and the second inner plate group and between the outer plate and one of the inner plate groups, and at least one hyper-elastic dampening element.

Seismic protection materials are derived from assemblages of unit cells, where each of the cells has a core, one or more shells disposed about the core, and rigid plates bounding the shells. The cores limit relative vertical movement between the plates, and the shell(s) limit relative lateral motion between the plates. Uncompressed cores are preferably substantially spherical or cylindrical, and can be solid or hollow. Unit cells can be aligned in same or different directions, both within a given layer of cells, and in different layers of cells. Assemblages can have any suitable overall shape and size, depending upon application, and for example can support objects ranging from table top equipment to large buildings and bridges.

A sliding seismic isolation device includes an upper shoe and a lower shoe, the upper and lower shoes having sliding surfaces, and the sliding surfaces having curvatures; and a columnar steel slider disposed between the upper and lower shoes, the slider having an upper surface and a lower surface that are in contact with the upper and lower shoes, respectively, and have curvatures. A double-woven fabric layer is attached to each of the upper and lower surfaces of the slider via an adhesive layer, the double-woven fabric layer containing PTFE fibers and fibers with higher tensile strength than that of the PTFE fibers, and the PTFE fibers being arranged on sides of the sliding surfaces of the upper and lower shoes. A fluorine coat layer is disposed on a surface of the double-woven fabric layer, and a lubricating oil layer is disposed on a surface of the fluorine coat layer.

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.

The present invention relates to a wall damper (100) connected to an upper floor and a lower floor, comprising of a top cap (108), a pair of cover plates (105), a pair of side members (107), and a base (110), interconnected to one another to form a framing structure to accommodate a pair of inner panels (101), a plurality of damping means (103), and a plurality of outer plates (104); characterised in that the pair of inner panels (101) connected vertically to one another by a joint (102); the top cap (108) having a slit (114) for receiving the pair of inner panels (101); the plurality of damping means (103) bounded to both sides of the pair of inner panels (101); the plurality of outer plates (104) bounded to the plurality of damping means (103); a plurality of stiffening members (106) disposed on a surface of each of the pair of cover plates (105); wherein the pair of inner panels (101), the plurality of damping means (103), the plurality of outer plates (104) and the pair of cover plates (105) are arranged in a parallel relationship; wherein the pair of inner panels (101), the joint (102), the plurality of damping means (103), the plurality of outer plates (104), and the pair of cover plates (105), being provided with a plurality of cavities (113) and aligned with one another accordingly for a connecting means (112) transversed therethrough.

A sliding seismic isolation device includes an upper shoe and a lower shoe, the upper and lower shoes having sliding surfaces, and the sliding surfaces having curvatures; and a columnar steel slider disposed between the upper and lower shoes, the slider having an upper surface and a lower surface that are in contact with the upper and lower shoes, respectively, and have curvatures. A double-woven fabric layer is attached to each of the upper and lower surfaces of the slider via an adhesive layer, the double-woven fabric layer containing PTFE fibers and fibers with higher tensile strength than that of the PTFE fibers, and the PTFE fibers being arranged on sides of the sliding surfaces of the upper and lower shoes. A fluorine coat layer is disposed on a surface of the double-woven fabric layer, and a lubricating oil layer is disposed on a surface of the fluorine coat layer.

A seismic isolation apparatus 1 includes a laminated body 7 having alternately laminated a plurality of elastic layers 2 and rigid layers 3, and a lead plug 17 being disposed therein without clearances in a hollow portion 14 extending in a laminated direction V of the laminated body 7 with respect to inner peripheral surfaces 15 of the elastic layers 2, inner peripheral surfaces 16 of the rigid layers 3, a lower surface 12 of an upper plate 10, and an upper surface 13 of a lower plate 11.