A system for building-specific multi-peril risk assessment and mitigation is disclosed. The system comprises a multi-peril hazard module, a processor, a database and a graphical network module. The multi-peril hazard module is configured to obtain hazard information and create a multi-peril event catalogue configured to generate intensity measures for multiple perils. The processor is configured to derive a peril vulnerability function and determine building-specific risk assessment results based on the hazard information and the peril vulnerability function. The database is configured to store the derived plurality of peril vulnerability functions. The graphical network module is configured to create probabilistic networks, wherein the probabilistic networks are connected to the determined building-specific risk assessment results of the peril vulnerability functions that have strong interdependencies and determine a multi-peril risk associated with the building.

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.

A variable acceleration curved surface spiral gear transmission mechanism for accelerated oscillator damper damping systems is disclosed. Through the orthogonal orbit planetary gear set moving along the parallel circular arc line guide rail, the concave surface spiral gear and the convex surface spiral gear are meshed at different radii, so as to realize the continuous changing of the speed ratio and changing of the acceleration of the additional mass block. The spiral curve limit guide groove is set on the surface of concave surface spiral gear and convex surface spiral gear, and the changing rate of speed changing ratio is adjusted by designing different spiral curves, and then the acceleration changing rate of additional mass block is controlled.

This disclosure relates to an active inerter damper configured to be disposed on or in a building structure. The active inerter damper includes a base, a lead screw, a rotational mass block, a driving device and a controller. The lead screw is movably disposed above the base along an axial direction. The rotational mass block is engaged with the lead screw so as to be rotatable with respect to the base. The driving device is connected to the lead screw. The controller is electrically connected to the driving device, and the controller is configured to activate the driving device to move the lead screw along the axial direction so as to rotate the rotational mass block via the lead screw.

A wall assembly (10) comprising top and bottom caps (11) and (12) which are generally U shaped channels and these are secured to a floor (13) and a concrete slab ceiling (14) which comprises in this case the underside of a concrete floor of the next level in a multi-storey building. In these arrangements the ceiling (14) has to be arranged in relation to the wall (15) for deflection of the ceiling (14), consequentially, the track (11) is spaced from the underside surface (16) by a distance of typically 20 mm and a suitable compressible spacer arrangement (17) is located between the upper surface (18) of the track (11) and the underside surface (16). The spacer arrangement (17) may be any suitable infill and one example may be a fire rated double sided adhesive layered expandable/compressible tape or foam. This tape may be applied to the upper outer surface of the channel and its other side adhesively applied to the underside of the concrete.

A wall assembly (10) comprising top and bottom caps (11) and (12) which are generally U shaped channels and these are secured to a floor (13) and a concrete slab ceiling (14) which comprises in this case the underside of a concrete floor of the next level in a multi-storey building. In these arrangements the ceiling (14) has to be arranged in relation to the wall (15) for deflection of the ceiling (14), consequentially, the track (11) is spaced from the underside surface (16) by a distance of typically 20 mm and a suitable compressible spacer arrangement (17) is located between the upper surface (18) of the track (11) and the underside surface (16). The spacer arrangement (17) may be any suitable infill and one example may be a fire rated double sided adhesive layered expandable/compressible tape or foam. This tape may be applied to the upper outer surface of the channel and its other side adhesively applied to the underside of the concrete.

A seismic protective structure (100) for protecting a board partition (190). The protective structure (100) comprises a first stud (110), a second stud (120), and a wedge (140). The first stud (110) is mounted against a neighbouring wall (150) and the second stud is being positioned spaced from the first stud so that a protective board (130) is mounted on the first stud and the second stud. The structure also comprises a wedge (140) mounted and positioned against the second stud (120) such that the protective board (130) mounted on the first (110) and second stud (120) is pushed at least partly out of the plane of the board partition (190) by the wedge (140) when a given level of seismic stress is appearing.

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 damper frame includes a structural frame and a damper assembly secured to the structural frame. The damper assembly includes a damper support secured to the structural frame. A damper is secured to the damper support. A diagonal link is secured to the structural frame. A lever is secured to the damper support and the damper. The lever is pivotally connected to the diagonal link so displacement of the diagonal link is amplified and transferred to the damper. The damper support includes a laterally-extending cantilevered portion and the damper is secured to the damper support at the cantilevered portion.

A double-friction pendulum three-dimensional vibration isolation bearing (1), includes a first support plate (10), a second support plate (20), a vertical vibration isolation unit, a first sliding end portion (40) and a second sliding end portion (50). At least one of the first support plate (10) and the second support plate (20) is movable. The vertical vibration isolation unit is disposed between the first support plate (10) and the second support plate (20).