Patent ID: 8869468
Filing Date: 2014-10-28
Classification: E04H,Y10T

Abstract:
1. A buckling restrained brace comprising: a generally elongated core plate with a first end and a second end and a longitudinal axis, and a medial region, with an attachment means on each end of said core plate, with said core plate configured to sustain compression forces and tensile forces from said ends; a discrete spring layer of corrugated material surrounding some or all surfaces of at least said medial region of said core plate, with said discrete spring layer comprising a spacing and resilient or degrading material in sliding engagement with said core plate, with said discrete spring layer defining a zone of compression around said core plate and providing a standoff spacer layer from a liquid grout matrix which is configured to solidify to surround said discrete spring layer with solidified grout, and providing a space for transverse expansion of said core plate; a casing tube enclosing said core plate and spaced apart from said core plate, with said casing tube configured to sustain expansion forces and prevent said core plate from buckling, said casing tube further comprising a first end plate and a second end plate, with said end plates defining a core plate passage for passage of said core plate through said end plates; said liquid grout matrix positioned between said discrete spring layer and said casing tube; with said discrete spring layer providing a resilient or degrading and displaceable layer and an expansion space for expansion of said core plate, and with said casing tube and liquid grout matrix serving as a buckling restraining element if sufficient force is applied to said ends of said core plate, and with said core plate configured to absorb seismic shocks or other forces in tension and in compression, with said casing structure limiting said core plate tendency to buckle.