Abstract: Summarized in this paper are the major findings from analytical studies of nine steel moment frame buildings conducted under Phase 1 of the SAC Steel Project. The buildings range in height from two to seventeen stories and ...

Abstract: Extensive research over the past 15 years has led to improved models and criteria for seismic design of composite steel–concrete moment frames and their components. Much of this research has been conducted through the ...

Abstract: Damage and stability assessment techniques are developed for evaluating the seismic performance of composite steel-concrete moment frames. The approach features a new seismic damage index based on cumulative member ductility ...

Abstract: A beam-column element for simulating the inelastic behavior of 3D mixed frame structures comprised of steel, reinforced concrete, and/or composite members is presented. The formulation makes use of the flexibility method ...

Abstract: This is the second of two companion papers that describe the formulation of analysis models for simulating the inelastic seismic response of three-dimensional mixed frame structures comprised of steel, reinforced-concrete, ...

Abstract: Two versions of a bounding surface plasticity model implemented in stress-resultant space and applicable to the analysis of steel, reinforced concrete, or composite beam-columns are discussed. One is a two-surface model ...

Abstract: Rocking braced frames (RBF) are innovative structural systems that maintain near-zero residual drift through controlled rocking and a self-centering posttensioning system. The braced frame members are designed to remain ...

Abstract: Concrete encased composite column design provisions of the American Concrete Institute Code (ACI 318), AISC-LRFD Specification, and the AISC Seismic Provisions are reviewed and evaluated based on fiber section analyses ...

Abstract: Rocking braced frames (RBF) are innovative structural systems that maintain near-zero residual drift through controlled rocking and a self-centering posttensioning system. The braced frame members are designed to remain ...

Abstract: In conjunction with load and resistance factor design specifications, advanced methods of inelastic analysis afford the opportunity to design steel structures based on realistic assessments of limit state behavior. This ...