Abstract: The stiffness of eccentrically braced frames (EBFs) is difficult to calculate by hand because they are indeterminate and have significant flexural, shear, and axial deformations in various members. EBF stiffness is important ...

Abstract: In ductile braced frames, column seismic demands depend on the strength of ductile elements and yielding patterns that occur during earthquake loading. Column demands were investigated in buckling restrained braced frames ...

Abstract: This study presents an experimental investigation into the cyclic performance of a new tube-in-tube buckling restrained brace (BRB) configuration. In this study, reduced- and large-scale brace geometries are tested to ...

Abstract: The inelastic rotation capacity of links in eccentrically braced frames (EBFs) is dependent on testing loading history or sequence. Current design rotations for links are based on experiments from the 1980s performed with ...

Abstract: Nonlinear response history analysis is an important tool for accurately determining the performance of tall buildings under severe earthquake loading. When a standard genetic algorithm is used in conjunction with nonlinear ...

Abstract: Some architectural designs for steel buildings require skew at moment frame connections. Reduced beam section (RBS) moment connections with out-of-plane skew have not been tested experimentally, and it is unclear how much ...

Abstract: Some architectural designs for steel buildings require skew at moment frame connections. Reduced beam section (RBS) moment connections with out-of-plane skew have not been tested experimentally, and it is unclear how much ...

Abstract: In a block-out connection, a steel column is connected to a footing through an opening (block-out) in a slab-on-grade that is later filled with unreinforced concrete. In design, engineers generally neglect any beneficial ...

Abstract: An analytical study was conducted to investigate the influence of the flange width–thickness ratio on the rotation capacity of links in eccentrically braced frames. Finite element models, verified using experimental data, ...

Abstract: Braced frames are often used to resist lateral earthquake loads in steel buildings, but braces can interfere with architectural features. Eccentrically braced frames (EBFs) will accommodate windows, doors, and halls, but ...