The present invention provides a torsional hysteretic damper for braced frames. The torsional hysteretic damper is used to reduce displacement and associated damages on structural elements by dampening (dissipating) an earthquake energy that impacts structures.

An articulating joint for a wind turbine having a tower defining a shaft and a deck provided in the shaft includes a bracket extending from a first end having a fixed connection with the deck to a second end including an opening. A fastener includes a head pivotably connected to the tower and a shaft extending through the opening. A washer connected to the bracket is aligned with the opening for receiving the shaft such that the fastener is pivotable with the washer relative to the opening to allow for relative movement between the tower and the deck.

An multi-load friction damper includes opposed gusset-side plates defining a slip channel. First and second brace-side plates are received within the slip channel and form first and second frictional engagements respectively. The frictional force of the first and second frictional engagements may be different.

A multi-layer friction damper includes a central gusset-side plate and first and second outer gusset-side plates. First and second brace-side plates are received between the central gusset-side plates and the first and second outer gusset-side plates to form first, second, third and fourth frictional engagements.

A multi-damper assembly includes a gusset engagement member and brace engagement member. A plurality of friction dampers extend between the gusset engagement member and the brace engagement member.

A structural yielding link, particularly for use in an eccentrically braced frame arrangement or in a linked column frame arrangement having a first end having a means for connecting to a face of a first beam and a second end having a means for connecting to a face of a second beam; a first variable cross-section portion and a second variable cross-section portion extending from the first end and from the second end, respectively; and a constant cross-section portion joining the first variable cross-section portion and the second variable cross-section portion.

The present disclosure relates to an energy dissipation device and system, comprising a hollow cylinder adapted to be filled with solid balls, and a longitudinal member/shaft having short rods protruding radially therefrom. The shaft having rods is movably disposed of within the hollow member and solid balls are filled and secured in the cylinder thereafter, such that two ends of the longitudinal member extend outside of the hollow member, and the rods and solid balls remain within the hollow cylinder. The ends of the device may be configured with structures or equipment. The movement of the shaft along a longitudinal axis of the cylinder, upon receiving an energy impact in an event of seismic activity, wind loads, and/or man-made vibrations, results in friction between the solid balls and the rods of the shaft, which facilitates dissipation of the received energy.

The present invention relates to a viscoelastic bracing damper (100), comprising: a cylinder (101); an inner core (102) extended through the cylinder (101) without contacting an inner surface of the cylinder (101), thereby having a barrel portion formed between the inner surface of the cylinder (101) and the inner core (102); a joint (103) connecting a front connector (104) to one end of the inner core (102); a stopper (105) connecting an end connector (106) to an another end of the inner core (102); and characterised by a damping means (107) extended substantially along a length of the barrel portion; wherein the damping means (107) is compressed between the inner surface of the cylinder (101) and the inner core (102) for absorbing vibration loads.

A system of construction that performs advanced prefabrication of columns-beams type structure of buildings, prefabrication which results industrialization of this type of construction. The main development that allows this achievement in the same technical conditions, even better conditions than in the conventional system, is the massive use of braces as well vertically as horizontally. Such a building system is of special interest in areas where seismic risk is high because the building is very lightweight, constituted of a set of structurally self-sufficient units, heavily triangulated and therefore hardly deformable, all these at an affordable cost.

A steel panel damper is provided for reinforcing a building structure. The steel panel damper is disposed between a first member and an opposite second member arranged in the building structure. The steel panel damper comprises a first elastic segment, a second elastic segment, an energy dissipation segment, a first end plate, and a second end plate. In terms of the cross-sectional area perpendicular to the first direction, the first elastic segment and the second elastic segment are greater than the energy dissipation segment.

A structural device includes a first deformable member configured to absorb at least a portion of a load resulting from relative displacement between structural members of a building. The first deformable member exhibits elastic deformation when subjected to tensile and/or compressive forces within a first range of forces, and exhibits plastic deformation when subjected to tensile and/or compressive forces within a second range of forces. A second deformable member is affixed to a portion of the first deformable member, and is configured to absorb at least another portion of the load resulting from the relative displacement between the structural members of the building. The second deformable member exhibits elastic deformation when subjected to tensile and/or compressive forces within a third range of forces, and exhibits plastic deformation when subjected to tensile and/or compressive forces within a fourth range of forces. Methods relate to forming structural devices.

A buckling resistant spring clad bar (BRSCB) assembly is described. The BRSCB assembly includes a plurality of bars arranged to form a perimeter, each of the plurality of bars having a top end and a bottom end. A plurality of springs are provided, wherein at least one of the plurality of springs is wrapped around each of the plurality of bars. A diameter of the at least one of the plurality of spring is greater than a diameter of the each of the plurality of bars. The at least one of the plurality of springs is wrapped around each of the plurality of bars in close contact to provide buckling resistance against a load applied over each of the plurality of bars.