Buckling Restrained Braced Frames - SEAoT

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Gusset Plate Design Issues•Adjusted BRB strengths readilydetermined from backbonecurve (first validation ofmethodology)•Frame fixity must beacknowledged in analyses•Recognize that cyclic testing ofgusset plates not fullydeveloped•Avoid unnecessary connectionrestraint
Potential Connection IssuesBeam (or column) yield at
Page 1 and 2:
Buckling-Restrained Braced Framesby
Page 3 and 4:
Code Intent
Page 5 and 6:
To survive a strong earthquakewitho
Page 7 and 8:
How BRBs work
Page 9 and 10:
BRB Definitions Explained:Conventio
Page 11 and 12: Brief History of BRBFsin US Codes
Page 13 and 14: Background (recent past/present)SEA
Page 15 and 16: Sample BRBF Construction
Page 18 and 19: Sample Construction
Page 21: GEM High-Expectation Entrepreneursh
Page 24 and 25: BRB Tests Short Summary• About 50
Page 26 and 27: ASCE 7 2005 (with Supplement 1)R Va
Page 28 and 29: ASCE 7 2005 (with Supplement 1)C d
Page 30 and 31: ASCE 7 2005 (with Supplement 1)Coef
Page 32 and 33: Design Methodology
Page 34 and 35: BRBF Design Methodology• BRB is e
Page 36 and 37: Design SummaryLoad CombinationGravi
Page 38 and 39: BRB ModelingK br = 1.3 A sc E /L ?
Page 40 and 41: Steel Core Material• Specificatio
Page 42 and 43: BRB Axial Deformation CheckCompute
Page 44 and 45: BRB Axial Deformation ComparisonFor
Page 46 and 47: BRB Adjusted StrengthCompression:
Page 48 and 49: BRB Uniaxial Test ResultsHysteresis
Page 50 and 51: BRB Adjusted StrengthCase at invert
Page 52 and 53: Frame Design: Model BRB forces Usin
Page 54 and 55: Use of Proprietary BRBsEngineer Spe
Page 56 and 57: Alternate Specification of BRB Size
Page 58 and 59: Code Issues• BRB is a better brac
Page 60 and 61: Sample Connections
Page 64 and 65: Potential Connection IssuesCourtesy
Page 66 and 67: Summary
Page 68 and 69: Overall SummaryBRBs harness steel d
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Buckling Restrained Braced Frames - SEAoT

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