TY - GEN
T1 - Three-dimensional tests of two-story, one-bay by one-bay, steel concentric braced frames
AU - Palmer, Keith
AU - Roeder, Charles
AU - Okazaki, Taichiro
AU - Shield, Carol
AU - Lehman, Dawn
PY - 2011/6/13
Y1 - 2011/6/13
N2 - Steel concentric braced frames (CBFs) are widely used as systems to resist lateral loads induced from wind and seismic loading. Recent research on full-scale CBF subassemblages has shown that current design provisions fall short of the design intent. Additionally, the effect of imposed out-of-plane deformation on the system has never been evaluated experimentally in this manner. This paper describes the design, test setup and experimental results of two tests performed on a two-story, one-bay by one-bay CBFs, an HSS buckling-brace system in a single-story X-configuration, and a buckling-restrained braced frame (BRBF) in a single-diagonal configuration. The design of the gusset plates for the HSS braces followed a balanced design procedure with an elliptical clearance to permit out-of-plane rotation due to brace buckling. The HSS braces fractured at 2% story drift. The BRBF gusset plate design followed current design standards with the BRB cores fracturing at 3.5% story drift prior to any instabilities.
AB - Steel concentric braced frames (CBFs) are widely used as systems to resist lateral loads induced from wind and seismic loading. Recent research on full-scale CBF subassemblages has shown that current design provisions fall short of the design intent. Additionally, the effect of imposed out-of-plane deformation on the system has never been evaluated experimentally in this manner. This paper describes the design, test setup and experimental results of two tests performed on a two-story, one-bay by one-bay CBFs, an HSS buckling-brace system in a single-story X-configuration, and a buckling-restrained braced frame (BRBF) in a single-diagonal configuration. The design of the gusset plates for the HSS braces followed a balanced design procedure with an elliptical clearance to permit out-of-plane rotation due to brace buckling. The HSS braces fractured at 2% story drift. The BRBF gusset plate design followed current design standards with the BRB cores fracturing at 3.5% story drift prior to any instabilities.
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U2 - 10.1061/41171(401)266
DO - 10.1061/41171(401)266
M3 - Conference contribution
AN - SCOPUS:79958155931
SN - 9780784411711
T3 - Structures Congress 2011 - Proceedings of the 2011 Structures Congress
SP - 3057
EP - 3067
BT - Structures Congress 2011 - Proceedings of the 2011 Structures Congress
T2 - Structures Congress 2011
Y2 - 14 April 2011 through 16 April 2011
ER -